diff --git a/CHANGELOG.md b/CHANGELOG.md
index f446f39..6ba146b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
# Next Release
+# 3.0.8 - 15th January 2027
+Add caching Digest Authentication code from Leone25 Enrico
+Fix bug causing an error with Panasonic Cameras returning RTP/AVP/UDP in SETUP
+Add -t to the example demo.js to pick the RTP transport (-t udp or -t tcp)
+Handle multiple WWW-Authenticate responses (which is valid) and pick Digest over Basic
+
# 3.0.7 - 13th January 2027
Add H266 (VVC) support with output to a .266 file.
Tested with https://github.com/jimm98y/SharpRealTimeStreaming which uses the SharpRTSP Library
diff --git a/README.md b/README.md
index 5aa09f7..d3f8c25 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ An example of most API features can be found at [examples/demo.js](examples/demo
connect to a RTSP Stream and dump H264, H265, AV1 and AAC contents to a file.
For example
```node examples\demo.js rtsp://myhostname/stream1```
-```node examples\demo.js -u username -p password rtsp://myhostname/stream1```
+```node examples\demo.js -u username -p password -t tcp rtsp://myhostname/stream1```
To testthe output file with a video player you can use FFMPEG's ffplay command
```ffplay outfile.264```
diff --git a/dist/RTSPClient copy.d.ts b/dist/RTSPClient copy.d.ts
new file mode 100644
index 0000000..742cd6d
--- /dev/null
+++ b/dist/RTSPClient copy.d.ts
@@ -0,0 +1,107 @@
+///
+///
+///
+///
+import * as net from "net";
+import * as tls from "tls";
+type SocketUnion = net.Socket | tls.TLSSocket;
+import { EventEmitter } from "events";
+import * as util from "./util";
+import { Transport } from "./util";
+import * as transform from "sdp-transform";
+declare enum ReadStates {
+ SEARCHING = 0,
+ READING_RTSP_HEADER = 1,
+ READING_RTSP_PAYLOAD = 2,
+ READING_RAW_PACKET_SIZE = 3,
+ READING_RAW_PACKET = 4
+}
+type Connection = "udp" | "tcp";
+type AuthOptions = {
+ type: "Digest" | "Basic";
+ realm?: string;
+ nonce?: string;
+ qop?: string;
+ algorithm?: "MD5" | "SHA-256";
+};
+type Headers = {
+ [key: string]: string | number | undefined;
+ Session?: string;
+ Location?: string;
+ CSeq?: number;
+ "WWW-Authenticate"?: string;
+ Transport?: string;
+ Unsupported?: string;
+};
+type Detail = {
+ codec: string;
+ mediaSource: ({
+ type: string;
+ port: number;
+ protocol: string;
+ payloads?: string | undefined;
+ } & transform.MediaDescription);
+ transport: Transport['parameters'];
+ isH264: boolean;
+ rtpChannel: number;
+ rtcpChannel: number;
+ sr_ntpMSW?: number;
+ sr_ntpLSW?: number;
+ sr_rtptimestamp?: number;
+};
+export default class RTSPClient extends EventEmitter {
+ username: string;
+ password: string;
+ headers: {
+ [key: string]: string;
+ };
+ isConnected: boolean;
+ closed: boolean;
+ _url?: string;
+ _client?: SocketUnion;
+ _cSeq: number;
+ _unsupportedExtensions?: string[];
+ _authOpions?: AuthOptions;
+ _session?: string;
+ _keepAliveID?: NodeJS.Timeout;
+ _nextFreeInterleavedChannel: number;
+ _nextFreeUDPPort: number;
+ readState: ReadStates;
+ messageBytes: number[];
+ rtspContentLength: number;
+ rtspStatusLine: string;
+ rtspHeaders: Headers;
+ rtspPacketLength: number;
+ rtspPacket: Buffer;
+ rtspPacketPointer: number;
+ clientSSRC: number;
+ tcpSocket: SocketUnion;
+ setupResult: Array;
+ constructor(username: string, password: string, headers?: {
+ [key: string]: string;
+ });
+ _netConnect(hostname: string, port: number, secure?: boolean): Promise;
+ connect(url: string, { keepAlive, connection, secure, }?: {
+ keepAlive: boolean;
+ connection?: Connection;
+ secure: boolean;
+ }): Promise;
+ request(requestName: string, headersParam?: Headers, url?: string): Promise<{
+ headers: Headers;
+ mediaHeaders?: string[];
+ } | void>;
+ respond(status: string, headersParam?: Headers): void;
+ play(): Promise;
+ pause(): Promise;
+ sendAudioBackChannel(audioChunk: Buffer): Promise;
+ close(isImmediate?: boolean): Promise;
+ _onData(data: Buffer): void;
+ _sendInterleavedData(channel: number, buffer: Buffer): void;
+ _sendUDPData(host: string, port: number, buffer: Buffer): void;
+ _emptyReceiverReport(): Buffer;
+ _socketWrite(socket: SocketUnion, data: Buffer): Promise;
+ private _generateAuthString;
+ ntpBaseDate_ms: number;
+ GetWallClockTime(packet: util.RTPPacket, detail: Detail): Date | undefined;
+}
+export { RTPPacket, RTCPPacket } from "./util";
diff --git a/dist/RTSPClient copy.js b/dist/RTSPClient copy.js
new file mode 100644
index 0000000..ac53685
--- /dev/null
+++ b/dist/RTSPClient copy.js
@@ -0,0 +1,797 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const net = require("net");
+const tls = require("tls");
+const dgram = require("dgram");
+const url_1 = require("url");
+const events_1 = require("events");
+const util_1 = require("./util");
+const transform = require("sdp-transform");
+const RTPPacket_1 = require("./transports/RTPPacket");
+const RTP_AVP = "RTP/AVP";
+const RTP_AVPF = "RTP/AVPF"; // Used by AV1. This is RTP with Feedback (via RTCP) to request Keyframes via RTCP
+const STATUS_OK = 200;
+const STATUS_UNAUTH = 401;
+// The WWW_AUTH is of the format
+// TOKEN key=value
+// TOKEN key1=value1,key2=value2
+// TOKEN key1="value1",key2=value2
+// RegEx reminder ? = Zero or One item
+// * = Zero or More items
+// + = 1 or More items
+// \s is whitespace. But we need to 'escape the slash', hence \\s (or put the regex in / / characters)
+// ?= is a lookahead
+// The RegEx has two 'Groups'
+//
+// Group 1 (finding the Key)
+// Look for one or more characters (a..z or A..Z)
+// then look for whitespace
+// then look for 'equals'
+// then look for whitespace
+// then look for an optional Quote character
+//
+// Group 2 (finding the Value) -
+// Look for EITHER 'look backwards for a Quote', some characters, 'lookahead for a Quote'
+// OR some characters until (by looking ahead) you can see that another key comes next. The lookahead is 'optinal whitespace' 'comma' 'optional whitespace' 'chars' 'optinal whitespace' 'equals'
+// OR some characters followed by 'optinal whitespace'
+const WWW_AUTH = "WWW-Authenticate";
+const WWW_AUTH_REGEX = new RegExp('([a-zA-Z]+)\\s*=\\s*"?((?<=").*?(?=")|.*?(?=\\s*,?\\s*[a-zA-Z]+\\s*=)|.+[^\\s])', "g");
+var ReadStates;
+(function (ReadStates) {
+ ReadStates[ReadStates["SEARCHING"] = 0] = "SEARCHING";
+ ReadStates[ReadStates["READING_RTSP_HEADER"] = 1] = "READING_RTSP_HEADER";
+ ReadStates[ReadStates["READING_RTSP_PAYLOAD"] = 2] = "READING_RTSP_PAYLOAD";
+ ReadStates[ReadStates["READING_RAW_PACKET_SIZE"] = 3] = "READING_RAW_PACKET_SIZE";
+ ReadStates[ReadStates["READING_RAW_PACKET"] = 4] = "READING_RAW_PACKET";
+})(ReadStates || (ReadStates = {}));
+class RTSPClient extends events_1.EventEmitter {
+ constructor(username, password, headers) {
+ super();
+ this.isConnected = false;
+ this.closed = false;
+ this._cSeq = 0;
+ this._nextFreeInterleavedChannel = 0;
+ this._nextFreeUDPPort = 5000;
+ this.readState = ReadStates.SEARCHING;
+ // Used as a cache for the data stream.
+ // What's in here is based on current #readState.
+ this.messageBytes = [];
+ // Used for parsing RTSP responses,
+ // Content-Length header in the RTSP message.
+ this.rtspContentLength = 0;
+ this.rtspStatusLine = "";
+ this.rtspHeaders = {};
+ // Used for parsing RTP/RTCP responses.
+ this.rtspPacketLength = 0;
+ this.rtspPacket = Buffer.from("");
+ this.rtspPacketPointer = 0;
+ // Used in #_emptyReceiverReport.
+ this.clientSSRC = (0, util_1.generateSSRC)();
+ this.tcpSocket = new net.Socket();
+ this.setupResult = [];
+ this.ntpBaseDate_ms = new Date("1900/1/1").getTime();
+ this.username = username;
+ this.password = password;
+ this.headers = Object.assign(Object.assign({}, (headers || {})), { "User-Agent": "yellowstone/3.x" });
+ }
+ // This manages the lifecycle for the RTSP connection
+ // over TCP.
+ //
+ // Sets #_client.
+ //
+ // Handles receiving data & closing port, called during
+ // #connect.
+ _netConnect(hostname, port, secure = false) {
+ return new Promise((resolve, reject) => {
+ // Set after listeners defined.
+ const errorListener = (err) => {
+ client.removeListener("error", errorListener);
+ reject(err);
+ };
+ const postConnectErrorListener = (err) => {
+ client.removeListener("error", postConnectErrorListener);
+ this.emit("error", err);
+ reject(err);
+ };
+ const closeListener = () => {
+ client.removeListener("close", closeListener);
+ this.emit("close");
+ this.close(true);
+ };
+ const responseListener = (responseName, headers) => {
+ const name = responseName.split(" ")[0];
+ if (name.indexOf("RTSP/") === 0) {
+ return;
+ }
+ if (name === "REDIRECT" || name === "ANNOUNCE") {
+ this.respond("200 OK", { CSeq: headers.CSeq });
+ }
+ if (name === "REDIRECT" && headers.Location) {
+ this.close();
+ this.connect(headers.Location);
+ }
+ };
+ // rtsp or rtsps(with tls)
+ let client;
+ if (secure == false) {
+ client = net.connect(port, hostname, () => {
+ this.isConnected = true;
+ this._client = client;
+ client.removeListener("error", errorListener);
+ client.on("error", postConnectErrorListener);
+ this.on("response", responseListener);
+ resolve(this);
+ });
+ }
+ else {
+ const options = {
+ rejectUnauthorized: false
+ };
+ client = tls.connect(port, hostname, options, () => {
+ console.log("TLS Connection");
+ this.isConnected = true;
+ this._client = client;
+ client.removeListener("error", errorListener);
+ this.on("response", responseListener);
+ resolve(this);
+ });
+ }
+ client.on("data", this._onData.bind(this));
+ client.on("error", errorListener);
+ client.on("close", closeListener);
+ this.tcpSocket = client;
+ });
+ }
+ async connect(url, { keepAlive = true, connection = "udp", secure = false, } = {
+ keepAlive: true,
+ connection: "udp",
+ secure: false
+ }) {
+ const { hostname, port } = (0, url_1.parse)((this._url = url));
+ if (!hostname) {
+ throw new Error("URL parsing error in connect method.");
+ }
+ const details = [];
+ await this._netConnect(hostname, parseInt(port || "554"), secure);
+ await this.request("OPTIONS");
+ const describeRes = await this.request("DESCRIBE", {
+ Accept: "application/sdp",
+ });
+ if (!describeRes || !describeRes.mediaHeaders) {
+ throw new Error("No media headers on DESCRIBE; RTSP server is broken (sanity check)");
+ }
+ // For now, only RTP/AVP and RTP/AVPF are supported. (Some RTSPS servers use RTP/SAVP)
+ const { media } = transform.parse(describeRes.mediaHeaders.join("\r\n"));
+ // Loop over the Media Streams in the SDP looking for Video or Audio
+ // In theory the SDP can contain multiple Video and Audio Streams. We only want one of each type
+ let hasVideo = false;
+ let hasAudio = false;
+ let hasMetaData = false;
+ let hasBackchannel = false;
+ for (let x = 0; x < media.length; x++) {
+ let needSetup = false;
+ let codec = "";
+ const mediaSource = media[x];
+ // RFC says "If none of the direction attributes ("sendonly", "recvonly", "inactive", and "sendrecv") are present,
+ // the "sendrecv" SHOULD be assumed
+ if (mediaSource.direction == undefined)
+ mediaSource.direction = "sendrecv"; // Wowza does not send 'direction'
+ if (mediaSource.type === "video" &&
+ mediaSource.protocol === RTP_AVP &&
+ mediaSource.rtp[0].codec === "H264") {
+ this.emit("log", "H264 Video Stream Found in SDP", "");
+ if (hasVideo == false) {
+ needSetup = true;
+ hasVideo = true;
+ codec = "H264";
+ }
+ }
+ if (mediaSource.type === "video" &&
+ mediaSource.protocol === RTP_AVP &&
+ mediaSource.rtp[0].codec === "H265") {
+ this.emit("log", "H265 Video Stream Found in SDP", "");
+ if (hasVideo == false) {
+ needSetup = true;
+ hasVideo = true;
+ codec = "H265";
+ }
+ }
+ if (mediaSource.type === "video" &&
+ mediaSource.protocol === RTP_AVP &&
+ mediaSource.rtp[0].codec === "H266") {
+ this.emit("log", "H266 Video Stream Found in SDP", "");
+ if (hasVideo == false) {
+ needSetup = true;
+ hasVideo = true;
+ codec = "H266";
+ }
+ }
+ if (mediaSource.type === "video" &&
+ (mediaSource.protocol === RTP_AVP || mediaSource.protocol === RTP_AVPF) &&
+ mediaSource.rtp[0].codec === "AV1") {
+ this.emit("log", "AV1 Video Stream Found in SDP", "");
+ if (hasVideo == false) {
+ needSetup = true;
+ hasVideo = true;
+ codec = "AV1";
+ }
+ }
+ if (mediaSource.type === "audio" &&
+ (mediaSource.direction === "recvonly" || mediaSource.direction === "sendrecv") &&
+ mediaSource.protocol === RTP_AVP &&
+ mediaSource.rtp[0].codec.toLowerCase() === "mpeg4-generic" && // (RFC examples are lower case. Axis cameras use upper case)
+ mediaSource.fmtp[0].config.includes("AAC")) {
+ this.emit("log", "AAC Audio Stream Found in SDP", "");
+ if (hasAudio == false) {
+ needSetup = true;
+ hasAudio = true;
+ codec = "AAC";
+ }
+ }
+ if (mediaSource.type === "audio" &&
+ mediaSource.direction === "sendonly" &&
+ mediaSource.protocol === RTP_AVP) {
+ this.emit("log", "Audio backchannel Found in SDP", "");
+ if (hasBackchannel == false) {
+ needSetup = true;
+ hasBackchannel = true;
+ codec = mediaSource.rtp[0].codec;
+ }
+ }
+ if (mediaSource.type === "application" &&
+ mediaSource.protocol === RTP_AVP &&
+ mediaSource.rtp[0].codec.toLowerCase() === "vnd.onvif.metadata") {
+ this.emit("log", "ONVIF Meta Data Found in SDP", "");
+ if (hasMetaData == false) {
+ needSetup = true;
+ hasMetaData = true;
+ codec = "vnd.onvif.metadata";
+ }
+ }
+ if (needSetup) {
+ let streamurl = "";
+ // The 'control' in the SDP can be a relative or absolute uri
+ if (mediaSource.control) {
+ if (mediaSource.control.toLowerCase().startsWith("rtsp://")) {
+ // absolute path
+ streamurl = mediaSource.control;
+ }
+ else {
+ // relative path
+ streamurl = this._url + "/" + mediaSource.control;
+ }
+ }
+ // Perform a SETUP on the streamurl
+ // either 'udp' RTP/RTCP packets
+ // or with 'tcp' RTP/TCP packets which are interleaved into the TCP based RTSP socket
+ let setupRes;
+ let rtpChannel;
+ let rtcpChannel;
+ let rtpReceiver = null; // UDP mode init value
+ let rtcpReceiver = null; // UDP mode init value
+ if (connection === "udp") {
+ // Create a pair of UDP listeners, even numbered port for RTP
+ // and odd numbered port for RTCP
+ rtpChannel = this._nextFreeUDPPort;
+ rtcpChannel = this._nextFreeUDPPort + 1;
+ this._nextFreeUDPPort += 2;
+ const rtpPort = rtpChannel;
+ rtpReceiver = dgram.createSocket("udp4");
+ rtpReceiver.on("message", (buf, remote) => {
+ let packet = (0, util_1.parseRTPPacket)(buf);
+ // Add wall clock time
+ const detail = this.setupResult.find(item => item.rtpChannel == rtpChannel);
+ if (detail != undefined)
+ packet.wallclockTime = this.GetWallClockTime(packet, detail);
+ this.emit("data", rtpPort, packet.payload, packet);
+ });
+ const rtcpPort = rtcpChannel;
+ rtcpReceiver = dgram.createSocket("udp4");
+ rtcpReceiver.on("message", (buf, remote) => {
+ const packet = (0, util_1.parseRTCPPacket)(buf);
+ // If this is a Sender Report, cache the NTP Wall Clock data
+ if (packet.packetType == 200 && packet.senderReport != undefined) {
+ let detail = this.setupResult.find(item => item.rtcpChannel == rtcpChannel);
+ if (detail != undefined) {
+ detail.sr_ntpMSW = packet.senderReport.ntpTimestampMSW;
+ detail.sr_ntpLSW = packet.senderReport.ntpTimestampLSW;
+ detail.sr_rtptimestamp = packet.senderReport.rtpTimestamp;
+ }
+ }
+ this.emit("controlData", rtcpPort, packet);
+ const receiver_report = this._emptyReceiverReport();
+ this._sendUDPData(remote.address, remote.port, receiver_report);
+ });
+ // Block until both UDP sockets are open.
+ await new Promise((resolve) => {
+ rtpReceiver === null || rtpReceiver === void 0 ? void 0 : rtpReceiver.bind(rtpPort, () => resolve({}));
+ });
+ await new Promise((resolve) => {
+ rtcpReceiver === null || rtcpReceiver === void 0 ? void 0 : rtcpReceiver.bind(rtcpPort, () => resolve({}));
+ });
+ const setupHeader = {
+ Transport: `RTP/AVP;unicast;client_port=${rtpPort}-${rtcpPort}`,
+ };
+ if (this._session)
+ Object.assign(setupHeader, { Session: this._session });
+ setupRes = await this.request("SETUP", setupHeader, streamurl);
+ }
+ else if (connection === "tcp") {
+ // channel 0, RTP
+ // channel 1, RTCP
+ rtpChannel = this._nextFreeInterleavedChannel;
+ rtcpChannel = this._nextFreeInterleavedChannel + 1;
+ this._nextFreeInterleavedChannel += 2;
+ const setupHeader = {
+ Transport: `RTP/AVP/TCP;interleaved=${rtpChannel}-${rtcpChannel}`,
+ };
+ if (this._session)
+ Object.assign(setupHeader, { Session: this._session }); // not used on first SETUP
+ setupRes = await this.request("SETUP", setupHeader, streamurl);
+ }
+ else {
+ throw new Error(`Connection parameter to RTSPClient#connect is ${connection}, not udp or tcp!`);
+ }
+ if (!setupRes) {
+ throw new Error("No SETUP response; RTSP server is broken (sanity check)");
+ }
+ const { headers } = setupRes;
+ if (!headers.Transport) {
+ throw new Error("No Transport header on SETUP; RTSP server is broken (sanity check)");
+ }
+ const transport = (0, util_1.parseTransport)(headers.Transport);
+ if (transport.protocol !== "RTP/AVP/TCP" &&
+ transport.protocol !== "RTP/AVP") {
+ throw new Error("Only RTSP servers supporting RTP/AVP(unicast) or RTP/AVP/TCP are supported at this time.");
+ }
+ // Patch from zoolyka (Zoltan Hajdu).
+ // Try to open a hole in the NAT router (to allow incoming UDP packets)
+ // by send a UDP packet for RTP and RTCP to the remote RTSP server.
+ // Note, Roger did not have a router that needed this so the feature is untested.
+ // May be better to change the RTCP message to a Receiver Report, leaving the RTP message as zero bytes
+ if (connection === "udp" && transport && rtpReceiver && rtcpReceiver) {
+ rtpReceiver.send(Buffer.from(''), Number(transport.parameters["server_port"].split("-")[0]), hostname);
+ rtcpReceiver.send(Buffer.from(''), Number(transport.parameters["server_port"].split("-")[1]), hostname);
+ }
+ if (headers.Unsupported) {
+ this._unsupportedExtensions = headers.Unsupported.split(",");
+ }
+ if (headers.Session) {
+ this._session = headers.Session.split(";")[0];
+ }
+ const detail = {
+ codec,
+ mediaSource,
+ transport: transport.parameters,
+ isH264: codec === "H264",
+ rtpChannel,
+ rtcpChannel,
+ };
+ details.push(detail);
+ } // end if (needSetup)
+ } // end for loop, looping over each media stream
+ if (keepAlive) {
+ // Start a Timer to send OPTIONS every 20 seconds to keep stream alive
+ // using the Session ID
+ this._keepAliveID = setInterval(() => {
+ this.request("OPTIONS", { Session: this._session });
+ // this.request("OPTIONS");
+ }, 20 * 1000);
+ }
+ this.setupResult = details;
+ return details;
+ }
+ request(requestName, headersParam = {}, url) {
+ if (!this._client) {
+ return Promise.resolve();
+ }
+ if (!url) {
+ url = this._url;
+ }
+ const id = ++this._cSeq;
+ // mutable via string addition
+ let req = `${requestName} ${url} RTSP/1.0\r\nCSeq: ${id}\r\n`;
+ const headers = Object.assign(Object.assign({}, this.headers), headersParam);
+ if (this._authOpions) {
+ Object.assign(headers, {
+ Authorization: this._generateAuthString(requestName, url),
+ });
+ // TESTING - now mess up the cached auth info
+ console.log("AAAAAAAAAAAAAAAAAAAAAAAAAAA");
+ }
+ // NOTE:
+ // If we cache the Authenitcation Type (Direct or Basic) then we could
+ // re-compute an Authorization Header here and include in the RTSP Command
+ // This would make connections a faster with fewer round-trips to the RTSP Server
+ req += Object.entries(headers)
+ .map(([key, value]) => `${key}: ${value}\r\n`)
+ .join("");
+ this.emit("log", req, "C->S");
+ // Make sure to add an empty line after the request.
+ this._client.write(`${req}\r\n`);
+ return new Promise((resolve, reject) => {
+ const responseHandler = (responseName, resHeaders, mediaHeaders) => {
+ const firstAnswer = String(resHeaders[""]) || "";
+ if (firstAnswer.indexOf("401") >= 0 && 'Authorization' in headers) {
+ // If the RTSP Command we sent included an Authorization and we have 401 error, then reject()
+ reject(new Error(`Bad RTSP credentials!`));
+ return;
+ }
+ if (resHeaders.CSeq !== id) {
+ return;
+ }
+ this.removeListener("response", responseHandler);
+ const statusCode = parseInt(responseName.split(" ")[1]);
+ if (statusCode === STATUS_OK) {
+ if (mediaHeaders.length > 0) {
+ resolve({
+ headers: resHeaders,
+ mediaHeaders,
+ });
+ }
+ else {
+ resolve({
+ headers: resHeaders,
+ });
+ }
+ }
+ else {
+ const authHeader = resHeaders[WWW_AUTH];
+ // We have status code unauthenticated.
+ if (statusCode === STATUS_UNAUTH && authHeader) {
+ this._authOpions = {
+ type: authHeader.split(" ")[0],
+ algorithm: "MD5", // Default to MD5 if no algorthm is given. Milestone's RTSP server also supports SHA-256 for FIPS
+ };
+ // Get auth properties from WWW_AUTH header.
+ let match = WWW_AUTH_REGEX.exec(authHeader);
+ while (match != null) {
+ const prop = match[1];
+ if (prop == "realm" && match[2]) {
+ this._authOpions.realm = match[2];
+ }
+ if (prop == "nonce" && match[2]) {
+ this._authOpions.nonce = match[2];
+ }
+ if (prop == "algorithm" && match[2]) {
+ this._authOpions.algorithm = match[2];
+ }
+ if (prop == "qop" && match[2]) {
+ this._authOpions.qop = match[2];
+ }
+ match = WWW_AUTH_REGEX.exec(authHeader);
+ }
+ // Repeat the request, now _authOptions will be detected and the Authorization header will be generated
+ resolve(this.request(requestName, headers, url));
+ return;
+ }
+ reject(new Error(`Bad RTSP status code ${statusCode}!`));
+ return;
+ }
+ };
+ this.on("response", responseHandler);
+ });
+ }
+ respond(status, headersParam = {}) {
+ if (!this._client) {
+ return;
+ }
+ // mutable via string addition
+ let res = `RTSP/1.0 ${status}\r\n`;
+ const headers = Object.assign(Object.assign({}, this.headers), headersParam);
+ res += Object.entries(headers)
+ .map(([key, value]) => `${key}: ${value}\r\n`)
+ .join("");
+ this.emit("log", res, "C->S");
+ this._client.write(`${res}\r\n`);
+ }
+ async play() {
+ if (!this.isConnected) {
+ throw new Error("Client is not connected.");
+ }
+ await this.request("PLAY", { Session: this._session });
+ }
+ async pause() {
+ if (!this.isConnected) {
+ throw new Error("Client is not connected.");
+ }
+ await this.request("PAUSE", { Session: this._session });
+ }
+ async sendAudioBackChannel(audioChunk) {
+ let rtp, buf;
+ const bufSize = 160;
+ while (audioChunk.length > 0) {
+ if (audioChunk.length > bufSize) {
+ buf = audioChunk.slice(0, bufSize);
+ audioChunk = audioChunk.slice(bufSize, audioChunk.length);
+ }
+ else {
+ buf = audioChunk.slice(0, audioChunk.length);
+ audioChunk = Buffer.from([]);
+ }
+ if (!rtp)
+ rtp = new RTPPacket_1.default(buf);
+ else
+ rtp.payload = buf;
+ // rtp.type = 8;// set động
+ rtp.time += buf.length;
+ rtp.seq++;
+ const bufferLength = Buffer.alloc(2);
+ bufferLength.writeUInt16BE(rtp.packet.length, 0);
+ let channelInterleaved = this.setupResult.filter((value) => {
+ return value.mediaSource.type === 'audio' && value.mediaSource.direction === 'sendonly';
+ })[0].transport.interleaved;
+ /* RTSP Interleaved Frame structure
+ |dollar sign|channel identifier|data length|
+ |1 Byte |1 Byte |2 Bytes |
+ */
+ channelInterleaved = channelInterleaved.split('-')[0];
+ let interleavedHeader = Buffer.from([0x24]); // set '$'
+ interleavedHeader = Buffer.concat([interleavedHeader, Buffer.from([channelInterleaved])]);
+ interleavedHeader = Buffer.concat([interleavedHeader, bufferLength]);
+ const dataToSend = Buffer.concat([interleavedHeader, rtp.packet]);
+ await this._socketWrite(this.tcpSocket, dataToSend);
+ }
+ return;
+ }
+ async close(isImmediate = false) {
+ if (this.closed)
+ return;
+ this.closed = true;
+ if (!this._client) {
+ return;
+ }
+ if (!isImmediate) {
+ await this.request("TEARDOWN", {
+ Session: this._session,
+ });
+ }
+ this._client.end();
+ this.removeAllListeners("response");
+ if (this._keepAliveID != undefined) {
+ clearInterval(this._keepAliveID);
+ this._keepAliveID = undefined;
+ }
+ this.isConnected = false;
+ this._cSeq = 0;
+ }
+ _onData(data) {
+ let index = 0;
+ // $
+ const PACKET_START = 0x24;
+ // R
+ const RTSP_HEADER_START = 0x52;
+ // /n
+ const ENDL = 10;
+ while (index < data.length) {
+ // read RTP or RTCP packet
+ if (this.readState == ReadStates.SEARCHING &&
+ data[index] == PACKET_START) {
+ this.messageBytes = [data[index]];
+ index++;
+ this.readState = ReadStates.READING_RAW_PACKET_SIZE;
+ }
+ else if (this.readState == ReadStates.READING_RAW_PACKET_SIZE) {
+ // accumulate bytes for $, channel and length
+ this.messageBytes.push(data[index]);
+ index++;
+ if (this.messageBytes.length == 4) {
+ this.rtspPacketLength =
+ (this.messageBytes[2] << 8) + this.messageBytes[3];
+ if (this.rtspPacketLength > 0) {
+ this.rtspPacket = Buffer.alloc(this.rtspPacketLength);
+ this.rtspPacketPointer = 0;
+ this.readState = ReadStates.READING_RAW_PACKET;
+ }
+ else {
+ this.readState = ReadStates.SEARCHING;
+ }
+ }
+ }
+ else if (this.readState == ReadStates.READING_RAW_PACKET) {
+ this.rtspPacket[this.rtspPacketPointer++] = data[index];
+ index++;
+ if (this.rtspPacketPointer == this.rtspPacketLength) {
+ const packetChannel = this.messageBytes[1];
+ if ((packetChannel & 0x01) === 0) {
+ // even number
+ let packet = (0, util_1.parseRTPPacket)(this.rtspPacket);
+ // Get the Session Detail
+ const detail = this.setupResult.find(item => item.rtpChannel == packetChannel);
+ if (detail != undefined)
+ packet.wallclockTime = this.GetWallClockTime(packet, detail);
+ this.emit("data", packetChannel, packet.payload, packet);
+ }
+ if ((packetChannel & 0x01) === 1) {
+ // odd number
+ const packet = (0, util_1.parseRTCPPacket)(this.rtspPacket);
+ // If this is a Sender Report, cache the NTP Wall Clock data
+ if (packet.packetType == 200 && packet.senderReport != undefined) {
+ let detail = this.setupResult.find(item => item.rtcpChannel == packetChannel);
+ if (detail != undefined) {
+ detail.sr_ntpMSW = packet.senderReport.ntpTimestampMSW;
+ detail.sr_ntpLSW = packet.senderReport.ntpTimestampLSW;
+ detail.sr_rtptimestamp = packet.senderReport.rtpTimestamp;
+ }
+ }
+ this.emit("controlData", packetChannel, packet);
+ const receiver_report = this._emptyReceiverReport();
+ this._sendInterleavedData(packetChannel, receiver_report);
+ }
+ this.readState = ReadStates.SEARCHING;
+ }
+ // read response data
+ }
+ else if (this.readState == ReadStates.SEARCHING &&
+ data[index] == RTSP_HEADER_START) {
+ // found the start of a RTSP rtsp_message
+ this.messageBytes = [data[index]];
+ index++;
+ this.readState = ReadStates.READING_RTSP_HEADER;
+ }
+ else if (this.readState == ReadStates.READING_RTSP_HEADER) {
+ // Reading a RTSP message.
+ // Add character to the messageBytes
+ // Ignore /r (13) but keep /n (10)
+ if (data[index] != 13) {
+ this.messageBytes.push(data[index]);
+ }
+ index++;
+ // if we have two new lines back to back then we have a complete RTSP command,
+ // note we may still need to read the Content Payload (the body) e.g. the SDP
+ if (this.messageBytes.length >= 2 &&
+ this.messageBytes[this.messageBytes.length - 2] == ENDL &&
+ this.messageBytes[this.messageBytes.length - 1] == ENDL) {
+ // Parse the Header
+ const text = String.fromCharCode.apply(null, this.messageBytes);
+ const lines = text.split("\n");
+ this.rtspContentLength = 0;
+ this.rtspStatusLine = lines[0];
+ this.rtspHeaders = {};
+ lines.forEach((line) => {
+ const indexOf = line.indexOf(":");
+ if (indexOf !== line.length - 1) {
+ const key = line.substring(0, indexOf).trim();
+ const data = line.substring(indexOf + 1).trim();
+ this.rtspHeaders[key] =
+ key != "Session" && data.match(/^[0-9]+$/)
+ ? parseInt(data, 10)
+ : data;
+ // workaround for buggy Hipcam RealServer/V1.0 camera which returns Content-length and not Content-Length
+ if (key.toLowerCase() == "content-length") {
+ this.rtspContentLength = parseInt(data, 10);
+ }
+ }
+ });
+ // if no content length, there there's no media headers
+ // emit the message
+ if (!this.rtspContentLength) {
+ this.emit("log", text, "S->C");
+ this.emit("response", this.rtspStatusLine, this.rtspHeaders, []);
+ this.readState = ReadStates.SEARCHING;
+ }
+ else {
+ this.messageBytes = [];
+ this.readState = ReadStates.READING_RTSP_PAYLOAD;
+ }
+ }
+ }
+ else if (this.readState == ReadStates.READING_RTSP_PAYLOAD &&
+ this.messageBytes.length < this.rtspContentLength) {
+ // Copy data into the RTSP payload
+ this.messageBytes.push(data[index]);
+ index++;
+ if (this.messageBytes.length == this.rtspContentLength) {
+ const text = String.fromCharCode.apply(null, this.messageBytes);
+ const mediaHeaders = text.split("\n");
+ // Emit the RTSP message
+ this.emit("log", String.fromCharCode.apply(null, this.messageBytes) + text, "S->C");
+ this.emit("response", this.rtspStatusLine, this.rtspHeaders, mediaHeaders);
+ this.readState = ReadStates.SEARCHING;
+ }
+ }
+ else {
+ // unexpected data
+ throw new Error("Bug in RTSP data framing, please file an issue with the author with stacktrace.");
+ }
+ } // end while
+ }
+ _sendInterleavedData(channel, buffer) {
+ if (!this._client) {
+ return;
+ }
+ const req = `${buffer.length} bytes of interleaved data on channel ${channel}`;
+ this.emit("log", req, "C->S");
+ const header = Buffer.alloc(4);
+ header[0] = 0x24; // ascii $
+ header[1] = channel;
+ header[2] = (buffer.length >> 8) & 0xff;
+ header[3] = (buffer.length >> 0) & 0xff;
+ const data = Buffer.concat([header, buffer]);
+ this._client.write(data);
+ }
+ _sendUDPData(host, port, buffer) {
+ const udp = dgram.createSocket("udp4");
+ udp.send(buffer, 0, buffer.length, port, host, (err, bytes) => {
+ // TODO: Don't ignore errors.
+ udp.close();
+ });
+ }
+ _emptyReceiverReport() {
+ const report = Buffer.alloc(8);
+ const version = 2;
+ const paddingBit = 0;
+ const reportCount = 0; // an empty report
+ const packetType = 201; // Receiver Report
+ const length = report.length / 4 - 1; // num 32 bit words minus 1
+ report[0] = (version << 6) + (paddingBit << 5) + reportCount;
+ report[1] = packetType;
+ report[2] = (length >> 8) & 0xff;
+ report[3] = (length >> 0) & 0xff;
+ report[4] = (this.clientSSRC >> 24) & 0xff;
+ report[5] = (this.clientSSRC >> 16) & 0xff;
+ report[6] = (this.clientSSRC >> 8) & 0xff;
+ report[7] = (this.clientSSRC >> 0) & 0xff;
+ return report;
+ }
+ async _socketWrite(socket, data) {
+ return new Promise((resolve, reject) => {
+ setTimeout(() => {
+ socket.write(data, (error) => {
+ if (error) {
+ reject(error);
+ }
+ else {
+ resolve(undefined);
+ }
+ });
+ }, 20);
+ });
+ }
+ _generateAuthString(requestName, url) {
+ if (!url) {
+ url = this._url;
+ }
+ let authString = "";
+ if (!this._authOpions)
+ return "";
+ if (this._authOpions.type === "Digest") {
+ // Digest Authentication
+ // Select Hash Function, default to MD5
+ const HashFunction = (this._authOpions.algorithm == "SHA-256" ? util_1.getSHA256Hash : util_1.getMD5Hash);
+ const ha1 = HashFunction(`${this.username}:${this._authOpions.realm}:${this.password}`);
+ const ha2 = HashFunction(`${requestName}:${url}`);
+ const ha3 = HashFunction(`${ha1}:${this._authOpions.nonce}:${ha2}`);
+ // Some RTSP servers to not accept "algorithm=NNN" in the authString and reject the authentication. So only add algorithm=ZZZZ when not using MD5
+ if (this._authOpions.algorithm == "MD5")
+ authString = `Digest username="${this.username}",realm="${this._authOpions.realm}",nonce="${this._authOpions.nonce}",uri="${url}",response="${ha3}"`;
+ else
+ authString = `Digest username="${this.username}",realm="${this._authOpions.realm}",nonce="${this._authOpions.nonce}",algorithm=${this._authOpions.algorithm},uri="${url}",response="${ha3}"`;
+ if (this._authOpions.qop != null)
+ authString += `, qop="${this._authOpions.qop}"`;
+ }
+ else if (this._authOpions.type === "Basic") {
+ // Basic Authentication
+ // https://xkcd.com/538/
+ const b64 = Buffer.from(`${this.username}:${this.password}`).toString("base64");
+ authString = `Basic ${b64}`;
+ }
+ return authString;
+ }
+ // Note we have had a RTP Packet in Yellowstone for many years, but the Audio Backchennal code added another object also called RTPPacket
+ GetWallClockTime(packet, detail) {
+ // Add Wall Clock Time
+ if (detail.sr_ntpMSW != undefined && detail.sr_ntpLSW != undefined && detail.sr_rtptimestamp != undefined && detail.mediaSource.rtp[0].rate != undefined) {
+ let refTimestampSecs = detail.sr_rtptimestamp / detail.mediaSource.rtp[0].rate; // H264 is 90 kHz clock rate
+ let packetTimestampSecs = packet.timestamp / detail.mediaSource.rtp[0].rate; // eg 90kHz
+ let packetTimestampDeltaSecs = packetTimestampSecs - refTimestampSecs;
+ let refTimestamp = new Date(this.ntpBaseDate_ms + (detail.sr_ntpMSW * 1000) + ((detail.sr_ntpLSW / Math.pow(2, 32)) * 1000));
+ let wallclockTime = new Date(refTimestamp.getTime() + (packetTimestampDeltaSecs * 1000));
+ return wallclockTime;
+ }
+ // Could not generate a Wall Clock Time
+ return undefined;
+ }
+}
+exports.default = RTSPClient;
+//# sourceMappingURL=RTSPClient%20copy.js.map
\ No newline at end of file
diff --git a/dist/RTSPClient copy.js.map b/dist/RTSPClient copy.js.map
new file mode 100644
index 0000000..7ae47ec
--- /dev/null
+++ b/dist/RTSPClient copy.js.map
@@ -0,0 +1 @@
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This is RTP with Feedback (via RTCP) to request Keyframes via RTCP\r\n\r\nconst STATUS_OK = 200;\r\nconst STATUS_UNAUTH = 401;\r\n\r\n// The WWW_AUTH is of the format\r\n// TOKEN key=value\r\n// TOKEN key1=value1,key2=value2\r\n// TOKEN key1=\"value1\",key2=value2\r\n\r\n// RegEx reminder ? = Zero or One item\r\n// * = Zero or More items\r\n// + = 1 or More items\r\n// \\s is whitespace. But we need to 'escape the slash', hence \\\\s (or put the regex in / / characters)\r\n// ?= is a lookahead\r\n\r\n// The RegEx has two 'Groups'\r\n// \r\n// Group 1 (finding the Key)\r\n// Look for one or more characters (a..z or A..Z)\r\n// then look for whitespace\r\n// then look for 'equals'\r\n// then look for whitespace\r\n// then look for an optional Quote character\r\n//\r\n// Group 2 (finding the Value) -\r\n// Look for EITHER 'look backwards for a Quote', some characters, 'lookahead for a Quote'\r\n// OR some characters until (by looking ahead) you can see that another key comes next. The lookahead is 'optinal whitespace' 'comma' 'optional whitespace' 'chars' 'optinal whitespace' 'equals'\r\n// OR some characters followed by 'optinal whitespace'\r\n\r\nconst WWW_AUTH = \"WWW-Authenticate\";\r\nconst WWW_AUTH_REGEX = new RegExp('([a-zA-Z]+)\\\\s*=\\\\s*\"?((?<=\").*?(?=\")|.*?(?=\\\\s*,?\\\\s*[a-zA-Z]+\\\\s*=)|.+[^\\\\s])', \"g\");\r\n\r\nenum ReadStates {\r\n SEARCHING,\r\n READING_RTSP_HEADER,\r\n READING_RTSP_PAYLOAD,\r\n READING_RAW_PACKET_SIZE,\r\n READING_RAW_PACKET,\r\n}\r\n\r\ntype Connection = \"udp\" | \"tcp\";\r\n\r\ntype AuthOptions = {\r\n type: \"Digest\" | \"Basic\",\r\n realm?: string,\r\n nonce?: string,\r\n qop?: string,\r\n algorithm?: \"MD5\" | \"SHA-256\",\r\n};\r\n\r\ntype Headers = {\r\n [key: string]: string | number | undefined;\r\n Session?: string;\r\n Location?: string;\r\n CSeq?: number;\r\n \"WWW-Authenticate\"?: string;\r\n Transport?: string;\r\n Unsupported?: string;\r\n};\r\n\r\n// Details for each Session within the RTSP Stream (eg video session, audio session, metadata session)\r\ntype Detail = {\r\n codec: string;\r\n mediaSource: ({ // cannot work out how to pull this type in\r\n type: string;\r\n port: number;\r\n protocol: string;\r\n payloads?: string | undefined;\r\n } & transform.MediaDescription); // get Type from the interface\r\n transport: Transport['parameters']; // get Type from the interface\r\n isH264: boolean; // legacy API\r\n rtpChannel: number;\r\n rtcpChannel: number;\r\n\r\n // Cache any optional RTCP Sender Report values (used to calculate Wall Clock Time)\r\n sr_ntpMSW?: number;\r\n sr_ntpLSW?: number;\r\n sr_rtptimestamp?: number;\r\n};\r\n\r\nexport default class RTSPClient extends EventEmitter {\r\n username: string;\r\n password: string;\r\n headers: { [key: string]: string };\r\n\r\n isConnected = false;\r\n closed = false;\r\n\r\n // These are all set in #connect or #_netConnect.\r\n\r\n _url?: string;\r\n _client?: SocketUnion;\r\n _cSeq = 0;\r\n _unsupportedExtensions?: string[];\r\n _authOpions?: AuthOptions;\r\n // Example: 'SessionId'[';timeout=seconds']\r\n _session?: string;\r\n _keepAliveID?: NodeJS.Timeout;\r\n _nextFreeInterleavedChannel = 0;\r\n _nextFreeUDPPort = 5000;\r\n\r\n readState: ReadStates = ReadStates.SEARCHING;\r\n\r\n // Used as a cache for the data stream.\r\n // What's in here is based on current #readState.\r\n messageBytes: number[] = [];\r\n\r\n // Used for parsing RTSP responses,\r\n\r\n // Content-Length header in the RTSP message.\r\n rtspContentLength = 0;\r\n rtspStatusLine = \"\";\r\n rtspHeaders: Headers = {};\r\n\r\n // Used for parsing RTP/RTCP responses.\r\n\r\n rtspPacketLength = 0;\r\n rtspPacket = Buffer.from(\"\");\r\n rtspPacketPointer = 0;\r\n\r\n // Used in #_emptyReceiverReport.\r\n clientSSRC = generateSSRC();\r\n\r\n tcpSocket: SocketUnion = new net.Socket();\r\n setupResult: Array = [];\r\n constructor(\r\n username: string,\r\n password: string,\r\n headers?: { [key: string]: string }\r\n ) {\r\n super();\r\n\r\n this.username = username;\r\n this.password = password;\r\n this.headers = {\r\n ...(headers || {}),\r\n \"User-Agent\": \"yellowstone/3.x\",\r\n };\r\n }\r\n\r\n // This manages the lifecycle for the RTSP connection\r\n // over TCP.\r\n //\r\n // Sets #_client.\r\n //\r\n // Handles receiving data & closing port, called during\r\n // #connect.\r\n _netConnect(hostname: string, port: number, secure: boolean = false): Promise {\r\n return new Promise((resolve, reject) => {\r\n // Set after listeners defined.\r\n\r\n const errorListener = (err: any) => {\r\n client.removeListener(\"error\", errorListener);\r\n reject(err);\r\n };\r\n\r\n const postConnectErrorListener = (err: any) => {\r\n client.removeListener(\"error\", postConnectErrorListener);\r\n this.emit(\"error\", err);\r\n reject(err);\r\n };\r\n\r\n const closeListener = () => {\r\n client.removeListener(\"close\", closeListener);\r\n this.emit(\"close\");\r\n this.close(true);\r\n };\r\n\r\n const responseListener = (responseName: string, headers: Headers) => {\r\n const name = responseName.split(\" \")[0];\r\n\r\n if (name.indexOf(\"RTSP/\") === 0) {\r\n return;\r\n }\r\n\r\n if (name === \"REDIRECT\" || name === \"ANNOUNCE\") {\r\n this.respond(\"200 OK\", { CSeq: headers.CSeq });\r\n }\r\n\r\n if (name === \"REDIRECT\" && headers.Location) {\r\n this.close();\r\n this.connect(headers.Location);\r\n }\r\n };\r\n\r\n // rtsp or rtsps(with tls)\r\n let client: SocketUnion;\r\n if (secure == false) {\r\n client = net.connect(port, hostname, () => {\r\n this.isConnected = true;\r\n this._client = client;\r\n\r\n client.removeListener(\"error\", errorListener);\r\n client.on(\"error\", postConnectErrorListener);\r\n\r\n this.on(\"response\", responseListener);\r\n resolve(this);\r\n });\r\n }\r\n else {\r\n const options: tls.ConnectionOptions = {\r\n rejectUnauthorized: false\r\n };\r\n client = tls.connect(port, hostname, options, () => {\r\n console.log(\"TLS Connection\");\r\n this.isConnected = true;\r\n this._client = client;\r\n\r\n client.removeListener(\"error\", errorListener);\r\n\r\n this.on(\"response\", responseListener);\r\n resolve(this);\r\n });\r\n }\r\n\r\n client.on(\"data\", this._onData.bind(this));\r\n client.on(\"error\", errorListener);\r\n client.on(\"close\", closeListener);\r\n this.tcpSocket = client;\r\n });\r\n }\r\n\r\n async connect(\r\n url: string,\r\n {\r\n keepAlive = true,\r\n connection = \"udp\",\r\n secure = false,\r\n }: { keepAlive: boolean; connection?: Connection, secure: boolean } = {\r\n keepAlive: true,\r\n connection: \"udp\",\r\n secure: false\r\n }\r\n ): Promise {\r\n const { hostname, port } = urlParse((this._url = url));\r\n if (!hostname) {\r\n throw new Error(\"URL parsing error in connect method.\");\r\n }\r\n\r\n const details: Detail[] = [];\r\n\r\n await this._netConnect(hostname, parseInt(port || \"554\"), secure);\r\n await this.request(\"OPTIONS\");\r\n\r\n const describeRes = await this.request(\"DESCRIBE\", {\r\n Accept: \"application/sdp\",\r\n });\r\n if (!describeRes || !describeRes.mediaHeaders) {\r\n throw new Error(\r\n \"No media headers on DESCRIBE; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n // For now, only RTP/AVP and RTP/AVPF are supported. (Some RTSPS servers use RTP/SAVP)\r\n const { media } = transform.parse(describeRes.mediaHeaders.join(\"\\r\\n\"));\r\n\r\n // Loop over the Media Streams in the SDP looking for Video or Audio\r\n // In theory the SDP can contain multiple Video and Audio Streams. We only want one of each type\r\n let hasVideo = false;\r\n let hasAudio = false;\r\n let hasMetaData = false;\r\n let hasBackchannel = false;\r\n\r\n for (let x = 0; x < media.length; x++) {\r\n let needSetup = false;\r\n let codec = \"\";\r\n const mediaSource = media[x];\r\n\r\n\r\n // RFC says \"If none of the direction attributes (\"sendonly\", \"recvonly\", \"inactive\", and \"sendrecv\") are present,\r\n // the \"sendrecv\" SHOULD be assumed\r\n if (mediaSource.direction == undefined) mediaSource.direction = \"sendrecv\"; // Wowza does not send 'direction'\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H264\"\r\n ) {\r\n this.emit(\"log\", \"H264 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H264\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H265\"\r\n ) {\r\n this.emit(\"log\", \"H265 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H265\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H266\"\r\n ) {\r\n this.emit(\"log\", \"H266 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H266\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n (mediaSource.protocol === RTP_AVP || mediaSource.protocol === RTP_AVPF) &&\r\n mediaSource.rtp[0].codec === \"AV1\"\r\n ) {\r\n this.emit(\"log\", \"AV1 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"AV1\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"audio\" &&\r\n (mediaSource.direction === \"recvonly\" || mediaSource.direction === \"sendrecv\") &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec.toLowerCase() === \"mpeg4-generic\" && // (RFC examples are lower case. Axis cameras use upper case)\r\n mediaSource.fmtp[0].config.includes(\"AAC\")\r\n ) {\r\n this.emit(\"log\", \"AAC Audio Stream Found in SDP\", \"\");\r\n if (hasAudio == false) {\r\n needSetup = true;\r\n hasAudio = true;\r\n codec = \"AAC\";\r\n }\r\n }\r\n\r\n if (mediaSource.type === \"audio\" &&\r\n mediaSource.direction === \"sendonly\" &&\r\n mediaSource.protocol === RTP_AVP) {\r\n this.emit(\"log\", \"Audio backchannel Found in SDP\", \"\");\r\n if (hasBackchannel == false) {\r\n needSetup = true;\r\n hasBackchannel = true;\r\n codec = mediaSource.rtp[0].codec;\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"application\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec.toLowerCase() === \"vnd.onvif.metadata\"\r\n ) {\r\n this.emit(\"log\", \"ONVIF Meta Data Found in SDP\", \"\");\r\n if (hasMetaData == false) {\r\n needSetup = true;\r\n hasMetaData = true;\r\n codec = \"vnd.onvif.metadata\";\r\n }\r\n }\r\n\r\n if (needSetup) {\r\n let streamurl = \"\";\r\n // The 'control' in the SDP can be a relative or absolute uri\r\n if (mediaSource.control) {\r\n if (mediaSource.control.toLowerCase().startsWith(\"rtsp://\")) {\r\n // absolute path\r\n streamurl = mediaSource.control;\r\n } else {\r\n // relative path\r\n streamurl = this._url + \"/\" + mediaSource.control;\r\n }\r\n }\r\n\r\n // Perform a SETUP on the streamurl\r\n // either 'udp' RTP/RTCP packets\r\n // or with 'tcp' RTP/TCP packets which are interleaved into the TCP based RTSP socket\r\n let setupRes;\r\n let rtpChannel: number;\r\n let rtcpChannel: number;\r\n let rtpReceiver: dgram.Socket|null = null; // UDP mode init value\r\n let rtcpReceiver: dgram.Socket|null = null; // UDP mode init value\r\n\r\n if (connection === \"udp\") {\r\n // Create a pair of UDP listeners, even numbered port for RTP\r\n // and odd numbered port for RTCP\r\n\r\n rtpChannel = this._nextFreeUDPPort;\r\n rtcpChannel = this._nextFreeUDPPort + 1;\r\n this._nextFreeUDPPort += 2;\r\n\r\n const rtpPort = rtpChannel;\r\n rtpReceiver = dgram.createSocket(\"udp4\");\r\n\r\n rtpReceiver.on(\"message\", (buf, remote) => {\r\n let packet = parseRTPPacket(buf);\r\n\r\n // Add wall clock time\r\n const detail = this.setupResult.find(item => item.rtpChannel == rtpChannel);\r\n if (detail != undefined) packet.wallclockTime = this.GetWallClockTime(packet, detail);\r\n\r\n this.emit(\"data\", rtpPort, packet.payload, packet);\r\n });\r\n\r\n const rtcpPort = rtcpChannel;\r\n rtcpReceiver = dgram.createSocket(\"udp4\");\r\n\r\n rtcpReceiver.on(\"message\", (buf, remote) => {\r\n const packet = parseRTCPPacket(buf);\r\n\r\n // If this is a Sender Report, cache the NTP Wall Clock data\r\n if (packet.packetType == 200 && packet.senderReport != undefined) {\r\n let detail = this.setupResult.find(item => item.rtcpChannel == rtcpChannel);\r\n if (detail != undefined) {\r\n detail.sr_ntpMSW = packet.senderReport.ntpTimestampMSW;\r\n detail.sr_ntpLSW = packet.senderReport.ntpTimestampLSW;\r\n detail.sr_rtptimestamp = packet.senderReport.rtpTimestamp;\r\n }\r\n }\r\n\r\n this.emit(\"controlData\", rtcpPort, packet);\r\n\r\n const receiver_report = this._emptyReceiverReport();\r\n this._sendUDPData(remote.address, remote.port, receiver_report);\r\n });\r\n\r\n // Block until both UDP sockets are open.\r\n\r\n await new Promise((resolve) => {\r\n rtpReceiver?.bind(rtpPort, () => resolve({}));\r\n });\r\n\r\n await new Promise((resolve) => {\r\n rtcpReceiver?.bind(rtcpPort, () => resolve({}));\r\n });\r\n\r\n const setupHeader = {\r\n Transport: `RTP/AVP;unicast;client_port=${rtpPort}-${rtcpPort}`,\r\n };\r\n if (this._session)\r\n Object.assign(setupHeader, { Session: this._session });\r\n setupRes = await this.request(\"SETUP\", setupHeader, streamurl);\r\n } else if (connection === \"tcp\") {\r\n // channel 0, RTP\r\n // channel 1, RTCP\r\n\r\n rtpChannel = this._nextFreeInterleavedChannel;\r\n rtcpChannel = this._nextFreeInterleavedChannel + 1;\r\n this._nextFreeInterleavedChannel += 2;\r\n\r\n const setupHeader = {\r\n Transport: `RTP/AVP/TCP;interleaved=${rtpChannel}-${rtcpChannel}`,\r\n };\r\n if (this._session)\r\n Object.assign(setupHeader, { Session: this._session }); // not used on first SETUP\r\n setupRes = await this.request(\"SETUP\", setupHeader, streamurl);\r\n } else {\r\n throw new Error(\r\n `Connection parameter to RTSPClient#connect is ${connection}, not udp or tcp!`\r\n );\r\n }\r\n\r\n if (!setupRes) {\r\n throw new Error(\r\n \"No SETUP response; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n const { headers } = setupRes;\r\n\r\n if (!headers.Transport) {\r\n throw new Error(\r\n \"No Transport header on SETUP; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n const transport = parseTransport(headers.Transport);\r\n if (\r\n transport.protocol !== \"RTP/AVP/TCP\" &&\r\n transport.protocol !== \"RTP/AVP\"\r\n ) {\r\n throw new Error(\r\n \"Only RTSP servers supporting RTP/AVP(unicast) or RTP/AVP/TCP are supported at this time.\"\r\n );\r\n }\r\n\r\n // Patch from zoolyka (Zoltan Hajdu).\r\n // Try to open a hole in the NAT router (to allow incoming UDP packets)\r\n // by send a UDP packet for RTP and RTCP to the remote RTSP server.\r\n // Note, Roger did not have a router that needed this so the feature is untested.\r\n // May be better to change the RTCP message to a Receiver Report, leaving the RTP message as zero bytes\r\n if (connection === \"udp\" && transport && rtpReceiver && rtcpReceiver) {\r\n rtpReceiver.send(Buffer.from(''), Number(transport.parameters[\"server_port\"].split(\"-\")[0]), hostname);\r\n rtcpReceiver.send(Buffer.from(''), Number(transport.parameters[\"server_port\"].split(\"-\")[1]), hostname);\r\n }\r\n\r\n if (headers.Unsupported) {\r\n this._unsupportedExtensions = headers.Unsupported.split(\",\");\r\n }\r\n\r\n if (headers.Session) {\r\n this._session = headers.Session.split(\";\")[0];\r\n }\r\n\r\n const detail: Detail = {\r\n codec,\r\n mediaSource,\r\n transport: transport.parameters,\r\n isH264: codec === \"H264\", // legacy API\r\n rtpChannel,\r\n rtcpChannel,\r\n };\r\n\r\n details.push(detail);\r\n } // end if (needSetup)\r\n } // end for loop, looping over each media stream\r\n\r\n if (keepAlive) {\r\n // Start a Timer to send OPTIONS every 20 seconds to keep stream alive\r\n // using the Session ID\r\n this._keepAliveID = setInterval(() => {\r\n this.request(\"OPTIONS\", { Session: this._session });\r\n // this.request(\"OPTIONS\");\r\n }, 20 * 1000);\r\n }\r\n\r\n this.setupResult = details;\r\n return details;\r\n }\r\n\r\n request(\r\n requestName: string,\r\n headersParam: Headers = {},\r\n url?: string\r\n ): Promise<{ headers: Headers; mediaHeaders?: string[] } | void> {\r\n if (!this._client) {\r\n return Promise.resolve();\r\n }\r\n\r\n if (!url) {\r\n url = this._url;\r\n }\r\n\r\n const id = ++this._cSeq;\r\n // mutable via string addition\r\n let req = `${requestName} ${url} RTSP/1.0\\r\\nCSeq: ${id}\\r\\n`;\r\n\r\n const headers = {\r\n ...this.headers,\r\n ...headersParam,\r\n };\r\n\r\n if (this._authOpions) {\r\n Object.assign(headers, {\r\n Authorization: this._generateAuthString(requestName, url),\r\n });\r\n\r\n // TESTING - now mess up the cached auth info\r\n console.log(\"AAAAAAAAAAAAAAAAAAAAAAAAAAA\");\r\n }\r\n\r\n \r\n // NOTE:\r\n // If we cache the Authenitcation Type (Direct or Basic) then we could\r\n // re-compute an Authorization Header here and include in the RTSP Command\r\n // This would make connections a faster with fewer round-trips to the RTSP Server\r\n\r\n req += Object.entries(headers)\r\n .map(([key, value]) => `${key}: ${value}\\r\\n`)\r\n .join(\"\");\r\n\r\n this.emit(\"log\", req, \"C->S\");\r\n // Make sure to add an empty line after the request.\r\n this._client.write(`${req}\\r\\n`);\r\n\r\n return new Promise((resolve, reject) => {\r\n const responseHandler = (\r\n responseName: string,\r\n resHeaders: Headers,\r\n mediaHeaders: string[]\r\n ) => {\r\n const firstAnswer: string = String(resHeaders[\"\"]) || \"\";\r\n if (firstAnswer.indexOf(\"401\") >= 0 && 'Authorization' in headers) {\r\n // If the RTSP Command we sent included an Authorization and we have 401 error, then reject()\r\n reject(new Error(`Bad RTSP credentials!`));\r\n return;\r\n }\r\n if (resHeaders.CSeq !== id) {\r\n return;\r\n }\r\n\r\n this.removeListener(\"response\", responseHandler);\r\n\r\n const statusCode = parseInt(responseName.split(\" \")[1]);\r\n\r\n if (statusCode === STATUS_OK) {\r\n if (mediaHeaders.length > 0) {\r\n resolve({\r\n headers: resHeaders,\r\n mediaHeaders,\r\n });\r\n } else {\r\n resolve({\r\n headers: resHeaders,\r\n });\r\n }\r\n } else {\r\n const authHeader = resHeaders[WWW_AUTH];\r\n\r\n // We have status code unauthenticated.\r\n if (statusCode === STATUS_UNAUTH && authHeader) {\r\n this._authOpions = {\r\n type: authHeader.split(\" \")[0] as AuthOptions[\"type\"],\r\n algorithm: \"MD5\", // Default to MD5 if no algorthm is given. Milestone's RTSP server also supports SHA-256 for FIPS\r\n }\r\n\r\n // Get auth properties from WWW_AUTH header.\r\n let match = WWW_AUTH_REGEX.exec(authHeader);\r\n while (match != null) {\r\n const prop = match[1];\r\n\r\n if (prop == \"realm\" && match[2]) {\r\n this._authOpions.realm = match[2];\r\n }\r\n\r\n if (prop == \"nonce\" && match[2]) {\r\n this._authOpions.nonce = match[2];\r\n }\r\n\r\n if (prop == \"algorithm\" && match[2]) {\r\n this._authOpions.algorithm = match[2] as AuthOptions[\"algorithm\"];\r\n }\r\n\r\n if (prop == \"qop\" && match[2]) {\r\n this._authOpions.qop = match[2];\r\n }\r\n\r\n match = WWW_AUTH_REGEX.exec(authHeader);\r\n }\r\n\r\n // Repeat the request, now _authOptions will be detected and the Authorization header will be generated\r\n resolve(this.request(requestName, headers, url));\r\n return;\r\n }\r\n\r\n reject(new Error(`Bad RTSP status code ${statusCode}!`));\r\n return;\r\n }\r\n };\r\n\r\n this.on(\"response\", responseHandler);\r\n });\r\n }\r\n\r\n respond(status: string, headersParam: Headers = {}): void {\r\n if (!this._client) {\r\n return;\r\n }\r\n\r\n // mutable via string addition\r\n let res = `RTSP/1.0 ${status}\\r\\n`;\r\n\r\n const headers = {\r\n ...this.headers,\r\n ...headersParam,\r\n };\r\n\r\n res += Object.entries(headers)\r\n .map(([key, value]) => `${key}: ${value}\\r\\n`)\r\n .join(\"\");\r\n\r\n this.emit(\"log\", res, \"C->S\");\r\n this._client.write(`${res}\\r\\n`);\r\n }\r\n\r\n async play(): Promise {\r\n if (!this.isConnected) {\r\n throw new Error(\"Client is not connected.\");\r\n }\r\n\r\n await this.request(\"PLAY\", { Session: this._session });\r\n }\r\n\r\n async pause(): Promise {\r\n if (!this.isConnected) {\r\n throw new Error(\"Client is not connected.\");\r\n }\r\n\r\n await this.request(\"PAUSE\", { Session: this._session });\r\n }\r\n\r\n async sendAudioBackChannel(audioChunk: Buffer): Promise {\r\n let rtp, buf;\r\n const bufSize = 160;\r\n while (audioChunk.length > 0) {\r\n if (audioChunk.length > bufSize) {\r\n buf = audioChunk.slice(0, bufSize);\r\n audioChunk = audioChunk.slice(bufSize, audioChunk.length);\r\n } else {\r\n buf = audioChunk.slice(0, audioChunk.length);\r\n audioChunk = Buffer.from([]);\r\n }\r\n if (!rtp)\r\n rtp = new RTPPacket(buf);\r\n else\r\n rtp.payload = buf;\r\n // rtp.type = 8;// set động\r\n rtp.time += buf.length;\r\n rtp.seq++;\r\n const bufferLength = Buffer.alloc(2);\r\n bufferLength.writeUInt16BE(rtp.packet.length, 0);\r\n let channelInterleaved = this.setupResult.filter((value) => {\r\n return value.mediaSource.type === 'audio' && value.mediaSource.direction === 'sendonly';\r\n })[0].transport.interleaved;\r\n /* RTSP Interleaved Frame structure\r\n |dollar sign|channel identifier|data length|\r\n |1 Byte |1 Byte |2 Bytes |\r\n */\r\n channelInterleaved = channelInterleaved.split('-')[0];\r\n let interleavedHeader = Buffer.from([0x24]);// set '$'\r\n interleavedHeader = Buffer.concat([interleavedHeader, Buffer.from([channelInterleaved])]);\r\n interleavedHeader = Buffer.concat([interleavedHeader, bufferLength]);\r\n const dataToSend = Buffer.concat([interleavedHeader, rtp.packet]);\r\n await this._socketWrite(this.tcpSocket, dataToSend);\r\n }\r\n return;\r\n }\r\n\r\n async close(isImmediate = false): Promise {\r\n if (this.closed) return;\r\n this.closed = true;\r\n\r\n if (!this._client) {\r\n return;\r\n }\r\n \r\n if (!isImmediate) {\r\n await this.request(\"TEARDOWN\", {\r\n Session: this._session,\r\n });\r\n }\r\n\r\n this._client.end();\r\n this.removeAllListeners(\"response\");\r\n\r\n if (this._keepAliveID != undefined) {\r\n clearInterval(this._keepAliveID);\r\n this._keepAliveID = undefined;\r\n }\r\n\r\n this.isConnected = false;\r\n this._cSeq = 0;\r\n }\r\n\r\n _onData(data: Buffer): void {\r\n let index = 0;\r\n\r\n // $\r\n const PACKET_START = 0x24;\r\n // R\r\n const RTSP_HEADER_START = 0x52;\r\n // /n\r\n const ENDL = 10;\r\n\r\n while (index < data.length) {\r\n // read RTP or RTCP packet\r\n if (\r\n this.readState == ReadStates.SEARCHING &&\r\n data[index] == PACKET_START\r\n ) {\r\n this.messageBytes = [data[index]];\r\n index++;\r\n\r\n this.readState = ReadStates.READING_RAW_PACKET_SIZE;\r\n } else if (this.readState == ReadStates.READING_RAW_PACKET_SIZE) {\r\n // accumulate bytes for $, channel and length\r\n this.messageBytes.push(data[index]);\r\n index++;\r\n\r\n if (this.messageBytes.length == 4) {\r\n this.rtspPacketLength =\r\n (this.messageBytes[2] << 8) + this.messageBytes[3];\r\n\r\n if (this.rtspPacketLength > 0) {\r\n this.rtspPacket = Buffer.alloc(this.rtspPacketLength);\r\n this.rtspPacketPointer = 0;\r\n this.readState = ReadStates.READING_RAW_PACKET;\r\n } else {\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n }\r\n } else if (this.readState == ReadStates.READING_RAW_PACKET) {\r\n this.rtspPacket[this.rtspPacketPointer++] = data[index];\r\n index++;\r\n\r\n if (this.rtspPacketPointer == this.rtspPacketLength) {\r\n const packetChannel = this.messageBytes[1];\r\n if ((packetChannel & 0x01) === 0) {\r\n // even number\r\n let packet = parseRTPPacket(this.rtspPacket);\r\n\r\n // Get the Session Detail\r\n const detail = this.setupResult.find(item => item.rtpChannel == packetChannel);\r\n if (detail != undefined) packet.wallclockTime = this.GetWallClockTime(packet, detail);\r\n\r\n this.emit(\"data\", packetChannel, packet.payload, packet);\r\n }\r\n if ((packetChannel & 0x01) === 1) {\r\n // odd number\r\n const packet = parseRTCPPacket(this.rtspPacket);\r\n\r\n // If this is a Sender Report, cache the NTP Wall Clock data\r\n if (packet.packetType == 200 && packet.senderReport != undefined) {\r\n let detail = this.setupResult.find(item => item.rtcpChannel == packetChannel);\r\n if (detail != undefined) {\r\n detail.sr_ntpMSW = packet.senderReport.ntpTimestampMSW;\r\n detail.sr_ntpLSW = packet.senderReport.ntpTimestampLSW;\r\n detail.sr_rtptimestamp = packet.senderReport.rtpTimestamp;\r\n }\r\n }\r\n \r\n this.emit(\"controlData\", packetChannel, packet);\r\n\r\n const receiver_report = this._emptyReceiverReport();\r\n this._sendInterleavedData(packetChannel, receiver_report);\r\n }\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n // read response data\r\n } else if (\r\n this.readState == ReadStates.SEARCHING &&\r\n data[index] == RTSP_HEADER_START\r\n ) {\r\n // found the start of a RTSP rtsp_message\r\n this.messageBytes = [data[index]];\r\n index++;\r\n\r\n this.readState = ReadStates.READING_RTSP_HEADER;\r\n } else if (this.readState == ReadStates.READING_RTSP_HEADER) {\r\n // Reading a RTSP message.\r\n\r\n // Add character to the messageBytes\r\n // Ignore /r (13) but keep /n (10)\r\n if (data[index] != 13) {\r\n this.messageBytes.push(data[index]);\r\n }\r\n index++;\r\n\r\n // if we have two new lines back to back then we have a complete RTSP command,\r\n // note we may still need to read the Content Payload (the body) e.g. the SDP\r\n if (\r\n this.messageBytes.length >= 2 &&\r\n this.messageBytes[this.messageBytes.length - 2] == ENDL &&\r\n this.messageBytes[this.messageBytes.length - 1] == ENDL\r\n ) {\r\n // Parse the Header\r\n\r\n const text = String.fromCharCode.apply(null, this.messageBytes);\r\n const lines = text.split(\"\\n\");\r\n\r\n this.rtspContentLength = 0;\r\n this.rtspStatusLine = lines[0];\r\n this.rtspHeaders = {};\r\n\r\n lines.forEach((line) => {\r\n const indexOf = line.indexOf(\":\");\r\n\r\n if (indexOf !== line.length - 1) {\r\n const key = line.substring(0, indexOf).trim();\r\n const data = line.substring(indexOf + 1).trim();\r\n\r\n this.rtspHeaders[key] =\r\n key != \"Session\" && data.match(/^[0-9]+$/)\r\n ? parseInt(data, 10)\r\n : data;\r\n\r\n // workaround for buggy Hipcam RealServer/V1.0 camera which returns Content-length and not Content-Length\r\n if (key.toLowerCase() == \"content-length\") {\r\n this.rtspContentLength = parseInt(data, 10);\r\n }\r\n }\r\n });\r\n\r\n // if no content length, there there's no media headers\r\n // emit the message\r\n if (!this.rtspContentLength) {\r\n this.emit(\"log\", text, \"S->C\");\r\n\r\n this.emit(\"response\", this.rtspStatusLine, this.rtspHeaders, []);\r\n this.readState = ReadStates.SEARCHING;\r\n } else {\r\n this.messageBytes = [];\r\n this.readState = ReadStates.READING_RTSP_PAYLOAD;\r\n }\r\n }\r\n } else if (\r\n this.readState == ReadStates.READING_RTSP_PAYLOAD &&\r\n this.messageBytes.length < this.rtspContentLength\r\n ) {\r\n // Copy data into the RTSP payload\r\n this.messageBytes.push(data[index]);\r\n index++;\r\n\r\n if (this.messageBytes.length == this.rtspContentLength) {\r\n const text = String.fromCharCode.apply(null, this.messageBytes);\r\n const mediaHeaders = text.split(\"\\n\");\r\n\r\n // Emit the RTSP message\r\n this.emit(\r\n \"log\",\r\n String.fromCharCode.apply(null, this.messageBytes) + text,\r\n \"S->C\"\r\n );\r\n\r\n this.emit(\r\n \"response\",\r\n this.rtspStatusLine,\r\n this.rtspHeaders,\r\n mediaHeaders\r\n );\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n } else {\r\n // unexpected data\r\n throw new Error(\r\n \"Bug in RTSP data framing, please file an issue with the author with stacktrace.\"\r\n );\r\n }\r\n } // end while\r\n }\r\n\r\n _sendInterleavedData(channel: number, buffer: Buffer): void {\r\n if (!this._client) {\r\n return;\r\n }\r\n\r\n const req = `${buffer.length} bytes of interleaved data on channel ${channel}`;\r\n this.emit(\"log\", req, \"C->S\");\r\n\r\n const header = Buffer.alloc(4);\r\n header[0] = 0x24; // ascii $\r\n header[1] = channel;\r\n header[2] = (buffer.length >> 8) & 0xff;\r\n header[3] = (buffer.length >> 0) & 0xff;\r\n\r\n const data = Buffer.concat([header, buffer]);\r\n this._client.write(data);\r\n }\r\n\r\n _sendUDPData(host: string, port: number, buffer: Buffer): void {\r\n const udp = dgram.createSocket(\"udp4\");\r\n udp.send(buffer, 0, buffer.length, port, host, (err, bytes) => {\r\n // TODO: Don't ignore errors.\r\n udp.close();\r\n });\r\n }\r\n\r\n _emptyReceiverReport(): Buffer {\r\n const report = Buffer.alloc(8);\r\n const version = 2;\r\n const paddingBit = 0;\r\n const reportCount = 0; // an empty report\r\n const packetType = 201; // Receiver Report\r\n const length = report.length / 4 - 1; // num 32 bit words minus 1\r\n report[0] = (version << 6) + (paddingBit << 5) + reportCount;\r\n report[1] = packetType;\r\n report[2] = (length >> 8) & 0xff;\r\n report[3] = (length >> 0) & 0xff;\r\n report[4] = (this.clientSSRC >> 24) & 0xff;\r\n report[5] = (this.clientSSRC >> 16) & 0xff;\r\n report[6] = (this.clientSSRC >> 8) & 0xff;\r\n report[7] = (this.clientSSRC >> 0) & 0xff;\r\n\r\n return report;\r\n }\r\n\r\n async _socketWrite(socket: SocketUnion, data: Buffer): Promise {\r\n return new Promise((resolve, reject) => {\r\n setTimeout(() => {\r\n socket.write(data, (error: any) => {\r\n if (error) {\r\n reject(error);\r\n } else {\r\n resolve(undefined);\r\n }\r\n })\r\n }, 20);\r\n })\r\n }\r\n\r\n private _generateAuthString(requestName: string, url?: string): string {\r\n\r\n if (!url) {\r\n url = this._url;\r\n }\r\n\r\n let authString = \"\";\r\n if (!this._authOpions) return \"\";\r\n if (this._authOpions.type === \"Digest\") {\r\n // Digest Authentication\r\n\r\n // Select Hash Function, default to MD5\r\n const HashFunction = (this._authOpions.algorithm == \"SHA-256\" ? getSHA256Hash : getMD5Hash);\r\n\r\n const ha1 = HashFunction(\r\n `${this.username}:${this._authOpions.realm}:${this.password}`\r\n );\r\n const ha2 = HashFunction(`${requestName}:${url}`);\r\n const ha3 = HashFunction(`${ha1}:${this._authOpions.nonce}:${ha2}`);\r\n\r\n // Some RTSP servers to not accept \"algorithm=NNN\" in the authString and reject the authentication. So only add algorithm=ZZZZ when not using MD5\r\n if (this._authOpions.algorithm == \"MD5\")\r\n authString = `Digest username=\"${this.username}\",realm=\"${this._authOpions.realm}\",nonce=\"${this._authOpions.nonce}\",uri=\"${url}\",response=\"${ha3}\"`;\r\n else\r\n authString = `Digest username=\"${this.username}\",realm=\"${this._authOpions.realm}\",nonce=\"${this._authOpions.nonce}\",algorithm=${this._authOpions.algorithm},uri=\"${url}\",response=\"${ha3}\"`;\r\n\r\n if (this._authOpions.qop != null)\r\n authString += `, qop=\"${this._authOpions.qop}\"`;\r\n\r\n } else if (this._authOpions.type === \"Basic\") {\r\n // Basic Authentication\r\n // https://xkcd.com/538/\r\n const b64 = Buffer.from(\r\n `${this.username}:${this.password}`\r\n ).toString(\"base64\");\r\n authString = `Basic ${b64}`;\r\n }\r\n return authString;\r\n }\r\n\r\n ntpBaseDate_ms = new Date(\"1900/1/1\").getTime();\r\n\r\n // Note we have had a RTP Packet in Yellowstone for many years, but the Audio Backchennal code added another object also called RTPPacket\r\n GetWallClockTime(packet: util.RTPPacket, detail: Detail): Date | undefined {\r\n\r\n // Add Wall Clock Time\r\n if (detail.sr_ntpMSW != undefined && detail.sr_ntpLSW != undefined && detail.sr_rtptimestamp != undefined && detail.mediaSource.rtp[0].rate != undefined) {\r\n let refTimestampSecs = detail.sr_rtptimestamp / detail.mediaSource.rtp[0].rate; // H264 is 90 kHz clock rate\r\n let packetTimestampSecs = packet.timestamp / detail.mediaSource.rtp[0].rate; // eg 90kHz\r\n let packetTimestampDeltaSecs = packetTimestampSecs - refTimestampSecs;\r\n let refTimestamp = new Date(this.ntpBaseDate_ms + (detail.sr_ntpMSW * 1000) + ((detail.sr_ntpLSW/Math.pow(2,32))*1000));\r\n let wallclockTime = new Date(refTimestamp.getTime() + (packetTimestampDeltaSecs*1000));\r\n return wallclockTime;\r\n }\r\n\r\n // Could not generate a Wall Clock Time\r\n return undefined;\r\n }\r\n\r\n}\r\n\r\nexport { RTPPacket, RTCPPacket } from \"./util\";"]}
\ No newline at end of file
diff --git a/dist/RTSPClient.js b/dist/RTSPClient.js
index 590443b..f3ace84 100644
--- a/dist/RTSPClient.js
+++ b/dist/RTSPClient.js
@@ -340,9 +340,15 @@ class RTSPClient extends events_1.EventEmitter {
throw new Error("No Transport header on SETUP; RTSP server is broken (sanity check)");
}
const transport = (0, util_1.parseTransport)(headers.Transport);
- if (transport.protocol !== "RTP/AVP/TCP" &&
- transport.protocol !== "RTP/AVP") {
- throw new Error("Only RTSP servers supporting RTP/AVP(unicast) or RTP/AVP/TCP are supported at this time.");
+ if (
+ // TCP
+ transport.protocol !== "RTP/AVP/TCP" &&
+ // UDP
+ transport.protocol !== "RTP/AVP" &&
+ // UDP
+ transport.protocol !== "RTP/AVP/UDP" // Panasonic cameras send this
+ ) {
+ throw new Error("Only RTSP servers supporting RTP/AVP or RTP/AVP/UDP or RTP/AVP/TCP are supported at this time.");
}
// Patch from zoolyka (Zoltan Hajdu).
// Try to open a hole in the NAT router (to allow incoming UDP packets)
@@ -644,14 +650,35 @@ class RTSPClient extends events_1.EventEmitter {
this.rtspStatusLine = lines[0];
this.rtspHeaders = {};
lines.forEach((line) => {
+ var _a;
const indexOf = line.indexOf(":");
if (indexOf !== line.length - 1) {
const key = line.substring(0, indexOf).trim();
const data = line.substring(indexOf + 1).trim();
- this.rtspHeaders[key] =
- key != "Session" && data.match(/^[0-9]+$/)
- ? parseInt(data, 10)
- : data;
+ if (key == "Session")
+ this.rtspHeaders[key] = data;
+ else if (key == "WWW-Authenticate") {
+ // Handle multiple WWW-Authenticate entries and pick the 'best'
+ // We prefer 'Digest' over 'Basic'
+ // We preger 'Digest SHAxxx' over 'Digest MD5' or 'Digest with no algorithm (defaults to MD5) (STILL TODO)
+ if (key in this.rtspHeaders) {
+ console.log("Duplicate WWW-Authenticate keys");
+ if (data.startsWith("Digest") && ((_a = this.rtspHeaders[key]) === null || _a === void 0 ? void 0 : _a.startsWith("Basic"))) {
+ this.rtspHeaders[key] = data; // Replace Basic with Digest
+ }
+ console.log("Keeping WWW-Authenticate: " + this.rtspHeaders[key]);
+ }
+ else {
+ this.rtspHeaders[key] = data;
+ }
+ }
+ else {
+ // Store the result as either a String type or a Number type
+ this.rtspHeaders[key] =
+ data.match(/^[0-9]+$/)
+ ? parseInt(data, 10)
+ : data;
+ }
// workaround for buggy Hipcam RealServer/V1.0 camera which returns Content-length and not Content-Length
if (key.toLowerCase() == "content-length") {
this.rtspContentLength = parseInt(data, 10);
diff --git a/dist/RTSPClient.js.map b/dist/RTSPClient.js.map
index b77c308..c549169 100644
--- a/dist/RTSPClient.js.map
+++ b/dist/RTSPClient.js.map
@@ -1 +1 @@
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* as net from \"net\";\r\nimport * as tls from \"tls\";\r\n\r\n// Union of net.Socket and tls.TLSSocket\r\ntype SocketUnion = net.Socket | tls.TLSSocket;\r\n\r\nimport * as dgram from \"dgram\";\r\nimport { parse as urlParse } from \"url\";\r\nimport { EventEmitter } from \"events\";\r\n\r\nimport * as util from \"./util\";\r\n\r\nimport {\r\n parseRTPPacket,\r\n parseRTCPPacket,\r\n getMD5Hash,\r\n getSHA256Hash,\r\n Transport,\r\n parseTransport,\r\n generateSSRC,\r\n} from \"./util\";\r\n\r\nimport * as transform from \"sdp-transform\";\r\nimport RTPPacket from \"./transports/RTPPacket\";\r\nconst RTP_AVP = \"RTP/AVP\";\r\nconst RTP_AVPF = \"RTP/AVPF\"; // Used by AV1. This is RTP with Feedback (via RTCP) to request Keyframes via RTCP\r\n\r\nconst STATUS_OK = 200;\r\nconst STATUS_UNAUTH = 401;\r\n\r\n// The WWW_AUTH is of the format\r\n// TOKEN key=value\r\n// TOKEN key1=value1,key2=value2\r\n// TOKEN key1=\"value1\",key2=value2\r\n\r\n// RegEx reminder ? = Zero or One item\r\n// * = Zero or More items\r\n// + = 1 or More items\r\n// \\s is whitespace. But we need to 'escape the slash', hence \\\\s (or put the regex in / / characters)\r\n// ?= is a lookahead\r\n\r\n// The RegEx has two 'Groups'\r\n// \r\n// Group 1 (finding the Key)\r\n// Look for one or more characters (a..z or A..Z)\r\n// then look for whitespace\r\n// then look for 'equals'\r\n// then look for whitespace\r\n// then look for an optional Quote character\r\n//\r\n// Group 2 (finding the Value) -\r\n// Look for EITHER 'look backwards for a Quote', some characters, 'lookahead for a Quote'\r\n// OR some characters until (by looking ahead) you can see that another key comes next. The lookahead is 'optinal whitespace' 'comma' 'optional whitespace' 'chars' 'optinal whitespace' 'equals'\r\n// OR some characters followed by 'optinal whitespace'\r\n\r\nconst WWW_AUTH = \"WWW-Authenticate\";\r\nconst WWW_AUTH_REGEX = new RegExp('([a-zA-Z]+)\\\\s*=\\\\s*\"?((?<=\").*?(?=\")|.*?(?=\\\\s*,?\\\\s*[a-zA-Z]+\\\\s*=)|.+[^\\\\s])', \"g\");\r\n\r\nenum ReadStates {\r\n SEARCHING,\r\n READING_RTSP_HEADER,\r\n READING_RTSP_PAYLOAD,\r\n READING_RAW_PACKET_SIZE,\r\n READING_RAW_PACKET,\r\n}\r\n\r\ntype Connection = \"udp\" | \"tcp\";\r\n\r\ntype Headers = {\r\n [key: string]: string | number | undefined;\r\n Session?: string;\r\n Location?: string;\r\n CSeq?: number;\r\n \"WWW-Authenticate\"?: string;\r\n Transport?: string;\r\n Unsupported?: string;\r\n};\r\n\r\n// Details for each Session within the RTSP Stream (eg video session, audio session, metadata session)\r\ntype Detail = {\r\n codec: string;\r\n mediaSource: ({ // cannot work out how to pull this type in\r\n type: string;\r\n port: number;\r\n protocol: string;\r\n payloads?: string | undefined;\r\n } & transform.MediaDescription); // get Type from the interface\r\n transport: Transport['parameters']; // get Type from the interface\r\n isH264: boolean; // legacy API\r\n rtpChannel: number;\r\n rtcpChannel: number;\r\n\r\n // Cache any optional RTCP Sender Report values (used to calculate Wall Clock Time)\r\n sr_ntpMSW?: number;\r\n sr_ntpLSW?: number;\r\n sr_rtptimestamp?: number;\r\n};\r\n\r\nexport default class RTSPClient extends EventEmitter {\r\n username: string;\r\n password: string;\r\n headers: { [key: string]: string };\r\n\r\n isConnected = false;\r\n closed = false;\r\n\r\n // These are all set in #connect or #_netConnect.\r\n\r\n _url?: string;\r\n _client?: SocketUnion;\r\n _cSeq = 0;\r\n _unsupportedExtensions?: string[];\r\n // Example: 'SessionId'[';timeout=seconds']\r\n _session?: string;\r\n _keepAliveID?: NodeJS.Timeout;\r\n _nextFreeInterleavedChannel = 0;\r\n _nextFreeUDPPort = 5000;\r\n\r\n readState: ReadStates = ReadStates.SEARCHING;\r\n\r\n // Used as a cache for the data stream.\r\n // What's in here is based on current #readState.\r\n messageBytes: number[] = [];\r\n\r\n // Used for parsing RTSP responses,\r\n\r\n // Content-Length header in the RTSP message.\r\n rtspContentLength = 0;\r\n rtspStatusLine = \"\";\r\n rtspHeaders: Headers = {};\r\n\r\n // Used for parsing RTP/RTCP responses.\r\n\r\n rtspPacketLength = 0;\r\n rtspPacket = Buffer.from(\"\");\r\n rtspPacketPointer = 0;\r\n\r\n // Used in #_emptyReceiverReport.\r\n clientSSRC = generateSSRC();\r\n\r\n tcpSocket: SocketUnion = new net.Socket();\r\n setupResult: Array = [];\r\n constructor(\r\n username: string,\r\n password: string,\r\n headers?: { [key: string]: string }\r\n ) {\r\n super();\r\n\r\n this.username = username;\r\n this.password = password;\r\n this.headers = {\r\n ...(headers || {}),\r\n \"User-Agent\": \"yellowstone/3.x\",\r\n };\r\n }\r\n\r\n // This manages the lifecycle for the RTSP connection\r\n // over TCP.\r\n //\r\n // Sets #_client.\r\n //\r\n // Handles receiving data & closing port, called during\r\n // #connect.\r\n _netConnect(hostname: string, port: number, secure: boolean = false): Promise {\r\n return new Promise((resolve, reject) => {\r\n // Set after listeners defined.\r\n\r\n const errorListener = (err: any) => {\r\n client.removeListener(\"error\", errorListener);\r\n reject(err);\r\n };\r\n\r\n const postConnectErrorListener = (err: any) => {\r\n client.removeListener(\"error\", postConnectErrorListener);\r\n this.emit(\"error\", err);\r\n reject(err);\r\n };\r\n\r\n const closeListener = () => {\r\n client.removeListener(\"close\", closeListener);\r\n this.emit(\"close\");\r\n this.close(true);\r\n };\r\n\r\n const responseListener = (responseName: string, headers: Headers) => {\r\n const name = responseName.split(\" \")[0];\r\n\r\n if (name.indexOf(\"RTSP/\") === 0) {\r\n return;\r\n }\r\n\r\n if (name === \"REDIRECT\" || name === \"ANNOUNCE\") {\r\n this.respond(\"200 OK\", { CSeq: headers.CSeq });\r\n }\r\n\r\n if (name === \"REDIRECT\" && headers.Location) {\r\n this.close();\r\n this.connect(headers.Location);\r\n }\r\n };\r\n\r\n // rtsp or rtsps(with tls)\r\n let client: SocketUnion;\r\n if (secure == false) {\r\n client = net.connect(port, hostname, () => {\r\n this.isConnected = true;\r\n this._client = client;\r\n\r\n client.removeListener(\"error\", errorListener);\r\n client.on(\"error\", postConnectErrorListener);\r\n\r\n this.on(\"response\", responseListener);\r\n resolve(this);\r\n });\r\n }\r\n else {\r\n const options: tls.ConnectionOptions = {\r\n rejectUnauthorized: false\r\n };\r\n client = tls.connect(port, hostname, options, () => {\r\n console.log(\"TLS Connection\");\r\n this.isConnected = true;\r\n this._client = client;\r\n\r\n client.removeListener(\"error\", errorListener);\r\n\r\n this.on(\"response\", responseListener);\r\n resolve(this);\r\n });\r\n }\r\n\r\n client.on(\"data\", this._onData.bind(this));\r\n client.on(\"error\", errorListener);\r\n client.on(\"close\", closeListener);\r\n this.tcpSocket = client;\r\n });\r\n }\r\n\r\n async connect(\r\n url: string,\r\n {\r\n keepAlive = true,\r\n connection = \"udp\",\r\n secure = false,\r\n }: { keepAlive: boolean; connection?: Connection, secure: boolean } = {\r\n keepAlive: true,\r\n connection: \"udp\",\r\n secure: false\r\n }\r\n ): Promise {\r\n const { hostname, port } = urlParse((this._url = url));\r\n if (!hostname) {\r\n throw new Error(\"URL parsing error in connect method.\");\r\n }\r\n\r\n const details: Detail[] = [];\r\n\r\n await this._netConnect(hostname, parseInt(port || \"554\"), secure);\r\n await this.request(\"OPTIONS\");\r\n\r\n const describeRes = await this.request(\"DESCRIBE\", {\r\n Accept: \"application/sdp\",\r\n });\r\n if (!describeRes || !describeRes.mediaHeaders) {\r\n throw new Error(\r\n \"No media headers on DESCRIBE; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n // For now, only RTP/AVP and RTP/AVPF are supported. (Some RTSPS servers use RTP/SAVP)\r\n const { media } = transform.parse(describeRes.mediaHeaders.join(\"\\r\\n\"));\r\n\r\n // Loop over the Media Streams in the SDP looking for Video or Audio\r\n // In theory the SDP can contain multiple Video and Audio Streams. We only want one of each type\r\n let hasVideo = false;\r\n let hasAudio = false;\r\n let hasMetaData = false;\r\n let hasBackchannel = false;\r\n\r\n for (let x = 0; x < media.length; x++) {\r\n let needSetup = false;\r\n let codec = \"\";\r\n const mediaSource = media[x];\r\n\r\n\r\n // RFC says \"If none of the direction attributes (\"sendonly\", \"recvonly\", \"inactive\", and \"sendrecv\") are present,\r\n // the \"sendrecv\" SHOULD be assumed\r\n if (mediaSource.direction == undefined) mediaSource.direction = \"sendrecv\"; // Wowza does not send 'direction'\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H264\"\r\n ) {\r\n this.emit(\"log\", \"H264 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H264\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H265\"\r\n ) {\r\n this.emit(\"log\", \"H265 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H265\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H266\"\r\n ) {\r\n this.emit(\"log\", \"H266 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H266\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n (mediaSource.protocol === RTP_AVP || mediaSource.protocol === RTP_AVPF) &&\r\n mediaSource.rtp[0].codec === \"AV1\"\r\n ) {\r\n this.emit(\"log\", \"AV1 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"AV1\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"audio\" &&\r\n (mediaSource.direction === \"recvonly\" || mediaSource.direction === \"sendrecv\") &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec.toLowerCase() === \"mpeg4-generic\" && // (RFC examples are lower case. Axis cameras use upper case)\r\n mediaSource.fmtp[0].config.includes(\"AAC\")\r\n ) {\r\n this.emit(\"log\", \"AAC Audio Stream Found in SDP\", \"\");\r\n if (hasAudio == false) {\r\n needSetup = true;\r\n hasAudio = true;\r\n codec = \"AAC\";\r\n }\r\n }\r\n\r\n if (mediaSource.type === \"audio\" &&\r\n mediaSource.direction === \"sendonly\" &&\r\n mediaSource.protocol === RTP_AVP) {\r\n this.emit(\"log\", \"Audio backchannel Found in SDP\", \"\");\r\n if (hasBackchannel == false) {\r\n needSetup = true;\r\n hasBackchannel = true;\r\n codec = mediaSource.rtp[0].codec;\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"application\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec.toLowerCase() === \"vnd.onvif.metadata\"\r\n ) {\r\n this.emit(\"log\", \"ONVIF Meta Data Found in SDP\", \"\");\r\n if (hasMetaData == false) {\r\n needSetup = true;\r\n hasMetaData = true;\r\n codec = \"vnd.onvif.metadata\";\r\n }\r\n }\r\n\r\n if (needSetup) {\r\n let streamurl = \"\";\r\n // The 'control' in the SDP can be a relative or absolute uri\r\n if (mediaSource.control) {\r\n if (mediaSource.control.toLowerCase().startsWith(\"rtsp://\")) {\r\n // absolute path\r\n streamurl = mediaSource.control;\r\n } else {\r\n // relative path\r\n streamurl = this._url + \"/\" + mediaSource.control;\r\n }\r\n }\r\n\r\n // Perform a SETUP on the streamurl\r\n // either 'udp' RTP/RTCP packets\r\n // or with 'tcp' RTP/TCP packets which are interleaved into the TCP based RTSP socket\r\n let setupRes;\r\n let rtpChannel: number;\r\n let rtcpChannel: number;\r\n let rtpReceiver: dgram.Socket|null = null; // UDP mode init value\r\n let rtcpReceiver: dgram.Socket|null = null; // UDP mode init value\r\n\r\n if (connection === \"udp\") {\r\n // Create a pair of UDP listeners, even numbered port for RTP\r\n // and odd numbered port for RTCP\r\n\r\n rtpChannel = this._nextFreeUDPPort;\r\n rtcpChannel = this._nextFreeUDPPort + 1;\r\n this._nextFreeUDPPort += 2;\r\n\r\n const rtpPort = rtpChannel;\r\n rtpReceiver = dgram.createSocket(\"udp4\");\r\n\r\n rtpReceiver.on(\"message\", (buf, remote) => {\r\n let packet = parseRTPPacket(buf);\r\n\r\n // Add wall clock time\r\n const detail = this.setupResult.find(item => item.rtpChannel == rtpChannel);\r\n if (detail != undefined) packet.wallclockTime = this.GetWallClockTime(packet, detail);\r\n\r\n this.emit(\"data\", rtpPort, packet.payload, packet);\r\n });\r\n\r\n const rtcpPort = rtcpChannel;\r\n rtcpReceiver = dgram.createSocket(\"udp4\");\r\n\r\n rtcpReceiver.on(\"message\", (buf, remote) => {\r\n const packet = parseRTCPPacket(buf);\r\n\r\n // If this is a Sender Report, cache the NTP Wall Clock data\r\n if (packet.packetType == 200 && packet.senderReport != undefined) {\r\n let detail = this.setupResult.find(item => item.rtcpChannel == rtcpChannel);\r\n if (detail != undefined) {\r\n detail.sr_ntpMSW = packet.senderReport.ntpTimestampMSW;\r\n detail.sr_ntpLSW = packet.senderReport.ntpTimestampLSW;\r\n detail.sr_rtptimestamp = packet.senderReport.rtpTimestamp;\r\n }\r\n }\r\n\r\n this.emit(\"controlData\", rtcpPort, packet);\r\n\r\n const receiver_report = this._emptyReceiverReport();\r\n this._sendUDPData(remote.address, remote.port, receiver_report);\r\n });\r\n\r\n // Block until both UDP sockets are open.\r\n\r\n await new Promise((resolve) => {\r\n rtpReceiver?.bind(rtpPort, () => resolve({}));\r\n });\r\n\r\n await new Promise((resolve) => {\r\n rtcpReceiver?.bind(rtcpPort, () => resolve({}));\r\n });\r\n\r\n const setupHeader = {\r\n Transport: `RTP/AVP;unicast;client_port=${rtpPort}-${rtcpPort}`,\r\n };\r\n if (this._session)\r\n Object.assign(setupHeader, { Session: this._session });\r\n setupRes = await this.request(\"SETUP\", setupHeader, streamurl);\r\n } else if (connection === \"tcp\") {\r\n // channel 0, RTP\r\n // channel 1, RTCP\r\n\r\n rtpChannel = this._nextFreeInterleavedChannel;\r\n rtcpChannel = this._nextFreeInterleavedChannel + 1;\r\n this._nextFreeInterleavedChannel += 2;\r\n\r\n const setupHeader = {\r\n Transport: `RTP/AVP/TCP;interleaved=${rtpChannel}-${rtcpChannel}`,\r\n };\r\n if (this._session)\r\n Object.assign(setupHeader, { Session: this._session }); // not used on first SETUP\r\n setupRes = await this.request(\"SETUP\", setupHeader, streamurl);\r\n } else {\r\n throw new Error(\r\n `Connection parameter to RTSPClient#connect is ${connection}, not udp or tcp!`\r\n );\r\n }\r\n\r\n if (!setupRes) {\r\n throw new Error(\r\n \"No SETUP response; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n const { headers } = setupRes;\r\n\r\n if (!headers.Transport) {\r\n throw new Error(\r\n \"No Transport header on SETUP; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n const transport = parseTransport(headers.Transport);\r\n if (\r\n transport.protocol !== \"RTP/AVP/TCP\" &&\r\n transport.protocol !== \"RTP/AVP\"\r\n ) {\r\n throw new Error(\r\n \"Only RTSP servers supporting RTP/AVP(unicast) or RTP/AVP/TCP are supported at this time.\"\r\n );\r\n }\r\n\r\n // Patch from zoolyka (Zoltan Hajdu).\r\n // Try to open a hole in the NAT router (to allow incoming UDP packets)\r\n // by send a UDP packet for RTP and RTCP to the remote RTSP server.\r\n // Note, Roger did not have a router that needed this so the feature is untested.\r\n // May be better to change the RTCP message to a Receiver Report, leaving the RTP message as zero bytes\r\n if (connection === \"udp\" && transport && rtpReceiver && rtcpReceiver) {\r\n rtpReceiver.send(Buffer.from(''), Number(transport.parameters[\"server_port\"].split(\"-\")[0]), hostname);\r\n rtcpReceiver.send(Buffer.from(''), Number(transport.parameters[\"server_port\"].split(\"-\")[1]), hostname);\r\n }\r\n\r\n if (headers.Unsupported) {\r\n this._unsupportedExtensions = headers.Unsupported.split(\",\");\r\n }\r\n\r\n if (headers.Session) {\r\n this._session = headers.Session.split(\";\")[0];\r\n }\r\n\r\n const detail: Detail = {\r\n codec,\r\n mediaSource,\r\n transport: transport.parameters,\r\n isH264: codec === \"H264\", // legacy API\r\n rtpChannel,\r\n rtcpChannel,\r\n };\r\n\r\n details.push(detail);\r\n } // end if (needSetup)\r\n } // end for loop, looping over each media stream\r\n\r\n if (keepAlive) {\r\n // Start a Timer to send OPTIONS every 20 seconds to keep stream alive\r\n // using the Session ID\r\n this._keepAliveID = setInterval(() => {\r\n this.request(\"OPTIONS\", { Session: this._session });\r\n // this.request(\"OPTIONS\");\r\n }, 20 * 1000);\r\n }\r\n\r\n this.setupResult = details;\r\n return details;\r\n }\r\n\r\n request(\r\n requestName: string,\r\n headersParam: Headers = {},\r\n url?: string\r\n ): Promise<{ headers: Headers; mediaHeaders?: string[] } | void> {\r\n if (!this._client) {\r\n return Promise.resolve();\r\n }\r\n\r\n const id = ++this._cSeq;\r\n // mutable via string addition\r\n let req = `${requestName} ${url || this._url} RTSP/1.0\\r\\nCSeq: ${id}\\r\\n`;\r\n\r\n const headers = {\r\n ...this.headers,\r\n ...headersParam,\r\n };\r\n\r\n // NOTE:\r\n // If we cache the Authenitcation Type (Direct or Basic) then we could\r\n // re-compute an Authorization Header here and include in the RTSP Command\r\n // This would make connections a faster with fewer round-trips to the RTSP Server\r\n\r\n req += Object.entries(headers)\r\n .map(([key, value]) => `${key}: ${value}\\r\\n`)\r\n .join(\"\");\r\n\r\n this.emit(\"log\", req, \"C->S\");\r\n // Make sure to add an empty line after the request.\r\n this._client.write(`${req}\\r\\n`);\r\n\r\n return new Promise((resolve, reject) => {\r\n const responseHandler = (\r\n responseName: string,\r\n resHeaders: Headers,\r\n mediaHeaders: string[]\r\n ) => {\r\n const firstAnswer: string = String(resHeaders[\"\"]) || \"\";\r\n if (firstAnswer.indexOf(\"401\") >= 0 && 'Authorization' in headers) {\r\n // If the RTSP Command we sent included an Authorization and we have 401 error, then reject()\r\n reject(new Error(`Bad RTSP credentials!`));\r\n return;\r\n }\r\n if (resHeaders.CSeq !== id) {\r\n return;\r\n }\r\n\r\n this.removeListener(\"response\", responseHandler);\r\n\r\n const statusCode = parseInt(responseName.split(\" \")[1]);\r\n\r\n if (statusCode === STATUS_OK) {\r\n if (mediaHeaders.length > 0) {\r\n resolve({\r\n headers: resHeaders,\r\n mediaHeaders,\r\n });\r\n } else {\r\n resolve({\r\n headers: resHeaders,\r\n });\r\n }\r\n } else {\r\n const authHeader = resHeaders[WWW_AUTH];\r\n\r\n // We have status code unauthenticated.\r\n if (statusCode === STATUS_UNAUTH && authHeader) {\r\n const type = authHeader.split(\" \")[0];\r\n\r\n // Get auth properties from WWW_AUTH header.\r\n let realm = \"\";\r\n let nonce = \"\";\r\n let algorithm = \"MD5\"; // Default to MD5 if no algorthm is given. Milestone's RTSP server also supports SHA-256 for FIPS\r\n\r\n let match = WWW_AUTH_REGEX.exec(authHeader);\r\n while (match != null) {\r\n const prop = match[1];\r\n\r\n if (prop == \"realm\" && match[2]) {\r\n realm = match[2];\r\n }\r\n\r\n if (prop == \"nonce\" && match[2]) {\r\n nonce = match[2];\r\n }\r\n\r\n if (prop == \"algorithm\" && match[2]) {\r\n algorithm = match[2];\r\n }\r\n\r\n match = WWW_AUTH_REGEX.exec(authHeader);\r\n }\r\n\r\n // mutable, corresponds to Authorization header\r\n let authString = \"\";\r\n\r\n if (type === \"Digest\") {\r\n // Digest Authentication\r\n\r\n // Select Hash Function, default to MD5\r\n const HashFunction = (algorithm == \"SHA-256\" ? getSHA256Hash : getMD5Hash);\r\n\r\n const ha1 = HashFunction(\r\n `${this.username}:${realm}:${this.password}`\r\n );\r\n const ha2 = HashFunction(`${requestName}:${this._url}`);\r\n const ha3 = HashFunction(`${ha1}:${nonce}:${ha2}`);\r\n\r\n // Some RTSP servers to not accept \"algorithm=NNN\" in the authString and reject the authentication. So only add algorithm=ZZZZ when not using MD5\r\n if (algorithm == \"MD5\")\r\n authString = `Digest username=\"${this.username}\",realm=\"${realm}\",nonce=\"${nonce}\",uri=\"${this._url}\",response=\"${ha3}\"`;\r\n else\r\n authString = `Digest username=\"${this.username}\",realm=\"${realm}\",nonce=\"${nonce}\",algorithm=${algorithm},uri=\"${this._url}\",response=\"${ha3}\"`;\r\n } else if (type === \"Basic\") {\r\n // Basic Authentication\r\n // https://xkcd.com/538/\r\n const b64 = Buffer.from(\r\n `${this.username}:${this.password}`\r\n ).toString(\"base64\");\r\n authString = `Basic ${b64}`;\r\n }\r\n\r\n Object.assign(headers, {\r\n Authorization: authString,\r\n });\r\n\r\n resolve(this.request(requestName, headers, url)); // Call this.request with Authorized request\r\n return;\r\n }\r\n\r\n reject(new Error(`Bad RTSP status code ${statusCode}!`));\r\n return;\r\n }\r\n };\r\n\r\n this.on(\"response\", responseHandler);\r\n });\r\n }\r\n\r\n respond(status: string, headersParam: Headers = {}): void {\r\n if (!this._client) {\r\n return;\r\n }\r\n\r\n // mutable via string addition\r\n let res = `RTSP/1.0 ${status}\\r\\n`;\r\n\r\n const headers = {\r\n ...this.headers,\r\n ...headersParam,\r\n };\r\n\r\n res += Object.entries(headers)\r\n .map(([key, value]) => `${key}: ${value}\\r\\n`)\r\n .join(\"\");\r\n\r\n this.emit(\"log\", res, \"C->S\");\r\n this._client.write(`${res}\\r\\n`);\r\n }\r\n\r\n async play(): Promise {\r\n if (!this.isConnected) {\r\n throw new Error(\"Client is not connected.\");\r\n }\r\n\r\n await this.request(\"PLAY\", { Session: this._session });\r\n }\r\n\r\n async pause(): Promise {\r\n if (!this.isConnected) {\r\n throw new Error(\"Client is not connected.\");\r\n }\r\n\r\n await this.request(\"PAUSE\", { Session: this._session });\r\n }\r\n\r\n async sendAudioBackChannel(audioChunk: Buffer): Promise {\r\n let rtp, buf;\r\n const bufSize = 160;\r\n while (audioChunk.length > 0) {\r\n if (audioChunk.length > bufSize) {\r\n buf = audioChunk.slice(0, bufSize);\r\n audioChunk = audioChunk.slice(bufSize, audioChunk.length);\r\n } else {\r\n buf = audioChunk.slice(0, audioChunk.length);\r\n audioChunk = Buffer.from([]);\r\n }\r\n if (!rtp)\r\n rtp = new RTPPacket(buf);\r\n else\r\n rtp.payload = buf;\r\n // rtp.type = 8;// set động\r\n rtp.time += buf.length;\r\n rtp.seq++;\r\n const bufferLength = Buffer.alloc(2);\r\n bufferLength.writeUInt16BE(rtp.packet.length, 0);\r\n let channelInterleaved = this.setupResult.filter((value) => {\r\n return value.mediaSource.type === 'audio' && value.mediaSource.direction === 'sendonly';\r\n })[0].transport.interleaved;\r\n /* RTSP Interleaved Frame structure\r\n |dollar sign|channel identifier|data length|\r\n |1 Byte |1 Byte |2 Bytes |\r\n */\r\n channelInterleaved = channelInterleaved.split('-')[0];\r\n let interleavedHeader = Buffer.from([0x24]);// set '$'\r\n interleavedHeader = Buffer.concat([interleavedHeader, Buffer.from([channelInterleaved])]);\r\n interleavedHeader = Buffer.concat([interleavedHeader, bufferLength]);\r\n const dataToSend = Buffer.concat([interleavedHeader, rtp.packet]);\r\n await this._socketWrite(this.tcpSocket, dataToSend);\r\n }\r\n return;\r\n }\r\n\r\n async close(isImmediate = false): Promise {\r\n if (this.closed) return;\r\n this.closed = true;\r\n\r\n if (!this._client) {\r\n return;\r\n }\r\n\r\n if (!isImmediate) {\r\n await this.request(\"TEARDOWN\", {\r\n Session: this._session,\r\n });\r\n }\r\n\r\n this._client.end();\r\n this.removeAllListeners(\"response\");\r\n\r\n if (this._keepAliveID != undefined) {\r\n clearInterval(this._keepAliveID);\r\n this._keepAliveID = undefined;\r\n }\r\n\r\n this.isConnected = false;\r\n this._cSeq = 0;\r\n }\r\n\r\n _onData(data: Buffer): void {\r\n let index = 0;\r\n\r\n // $\r\n const PACKET_START = 0x24;\r\n // R\r\n const RTSP_HEADER_START = 0x52;\r\n // /n\r\n const ENDL = 10;\r\n\r\n while (index < data.length) {\r\n // read RTP or RTCP packet\r\n if (\r\n this.readState == ReadStates.SEARCHING &&\r\n data[index] == PACKET_START\r\n ) {\r\n this.messageBytes = [data[index]];\r\n index++;\r\n\r\n this.readState = ReadStates.READING_RAW_PACKET_SIZE;\r\n } else if (this.readState == ReadStates.READING_RAW_PACKET_SIZE) {\r\n // accumulate bytes for $, channel and length\r\n this.messageBytes.push(data[index]);\r\n index++;\r\n\r\n if (this.messageBytes.length == 4) {\r\n this.rtspPacketLength =\r\n (this.messageBytes[2] << 8) + this.messageBytes[3];\r\n\r\n if (this.rtspPacketLength > 0) {\r\n this.rtspPacket = Buffer.alloc(this.rtspPacketLength);\r\n this.rtspPacketPointer = 0;\r\n this.readState = ReadStates.READING_RAW_PACKET;\r\n } else {\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n }\r\n } else if (this.readState == ReadStates.READING_RAW_PACKET) {\r\n this.rtspPacket[this.rtspPacketPointer++] = data[index];\r\n index++;\r\n\r\n if (this.rtspPacketPointer == this.rtspPacketLength) {\r\n const packetChannel = this.messageBytes[1];\r\n if ((packetChannel & 0x01) === 0) {\r\n // even number\r\n let packet = parseRTPPacket(this.rtspPacket);\r\n\r\n // Get the Session Detail\r\n const detail = this.setupResult.find(item => item.rtpChannel == packetChannel);\r\n if (detail != undefined) packet.wallclockTime = this.GetWallClockTime(packet, detail);\r\n\r\n this.emit(\"data\", packetChannel, packet.payload, packet);\r\n }\r\n if ((packetChannel & 0x01) === 1) {\r\n // odd number\r\n const packet = parseRTCPPacket(this.rtspPacket);\r\n\r\n // If this is a Sender Report, cache the NTP Wall Clock data\r\n if (packet.packetType == 200 && packet.senderReport != undefined) {\r\n let detail = this.setupResult.find(item => item.rtcpChannel == packetChannel);\r\n if (detail != undefined) {\r\n detail.sr_ntpMSW = packet.senderReport.ntpTimestampMSW;\r\n detail.sr_ntpLSW = packet.senderReport.ntpTimestampLSW;\r\n detail.sr_rtptimestamp = packet.senderReport.rtpTimestamp;\r\n }\r\n }\r\n \r\n this.emit(\"controlData\", packetChannel, packet);\r\n\r\n const receiver_report = this._emptyReceiverReport();\r\n this._sendInterleavedData(packetChannel, receiver_report);\r\n }\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n // read response data\r\n } else if (\r\n this.readState == ReadStates.SEARCHING &&\r\n data[index] == RTSP_HEADER_START\r\n ) {\r\n // found the start of a RTSP rtsp_message\r\n this.messageBytes = [data[index]];\r\n index++;\r\n\r\n this.readState = ReadStates.READING_RTSP_HEADER;\r\n } else if (this.readState == ReadStates.READING_RTSP_HEADER) {\r\n // Reading a RTSP message.\r\n\r\n // Add character to the messageBytes\r\n // Ignore /r (13) but keep /n (10)\r\n if (data[index] != 13) {\r\n this.messageBytes.push(data[index]);\r\n }\r\n index++;\r\n\r\n // if we have two new lines back to back then we have a complete RTSP command,\r\n // note we may still need to read the Content Payload (the body) e.g. the SDP\r\n if (\r\n this.messageBytes.length >= 2 &&\r\n this.messageBytes[this.messageBytes.length - 2] == ENDL &&\r\n this.messageBytes[this.messageBytes.length - 1] == ENDL\r\n ) {\r\n // Parse the Header\r\n\r\n const text = String.fromCharCode.apply(null, this.messageBytes);\r\n const lines = text.split(\"\\n\");\r\n\r\n this.rtspContentLength = 0;\r\n this.rtspStatusLine = lines[0];\r\n this.rtspHeaders = {};\r\n\r\n lines.forEach((line) => {\r\n const indexOf = line.indexOf(\":\");\r\n\r\n if (indexOf !== line.length - 1) {\r\n const key = line.substring(0, indexOf).trim();\r\n const data = line.substring(indexOf + 1).trim();\r\n\r\n this.rtspHeaders[key] =\r\n key != \"Session\" && data.match(/^[0-9]+$/)\r\n ? parseInt(data, 10)\r\n : data;\r\n\r\n // workaround for buggy Hipcam RealServer/V1.0 camera which returns Content-length and not Content-Length\r\n if (key.toLowerCase() == \"content-length\") {\r\n this.rtspContentLength = parseInt(data, 10);\r\n }\r\n }\r\n });\r\n\r\n // if no content length, there there's no media headers\r\n // emit the message\r\n if (!this.rtspContentLength) {\r\n this.emit(\"log\", text, \"S->C\");\r\n\r\n this.emit(\"response\", this.rtspStatusLine, this.rtspHeaders, []);\r\n this.readState = ReadStates.SEARCHING;\r\n } else {\r\n this.messageBytes = [];\r\n this.readState = ReadStates.READING_RTSP_PAYLOAD;\r\n }\r\n }\r\n } else if (\r\n this.readState == ReadStates.READING_RTSP_PAYLOAD &&\r\n this.messageBytes.length < this.rtspContentLength\r\n ) {\r\n // Copy data into the RTSP payload\r\n this.messageBytes.push(data[index]);\r\n index++;\r\n\r\n if (this.messageBytes.length == this.rtspContentLength) {\r\n const text = String.fromCharCode.apply(null, this.messageBytes);\r\n const mediaHeaders = text.split(\"\\n\");\r\n\r\n // Emit the RTSP message\r\n this.emit(\r\n \"log\",\r\n String.fromCharCode.apply(null, this.messageBytes) + text,\r\n \"S->C\"\r\n );\r\n\r\n this.emit(\r\n \"response\",\r\n this.rtspStatusLine,\r\n this.rtspHeaders,\r\n mediaHeaders\r\n );\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n } else {\r\n // unexpected data\r\n throw new Error(\r\n \"Bug in RTSP data framing, please file an issue with the author with stacktrace.\"\r\n );\r\n }\r\n } // end while\r\n }\r\n\r\n _sendInterleavedData(channel: number, buffer: Buffer): void {\r\n if (!this._client) {\r\n return;\r\n }\r\n\r\n const req = `${buffer.length} bytes of interleaved data on channel ${channel}`;\r\n this.emit(\"log\", req, \"C->S\");\r\n\r\n const header = Buffer.alloc(4);\r\n header[0] = 0x24; // ascii $\r\n header[1] = channel;\r\n header[2] = (buffer.length >> 8) & 0xff;\r\n header[3] = (buffer.length >> 0) & 0xff;\r\n\r\n const data = Buffer.concat([header, buffer]);\r\n this._client.write(data);\r\n }\r\n\r\n _sendUDPData(host: string, port: number, buffer: Buffer): void {\r\n const udp = dgram.createSocket(\"udp4\");\r\n udp.send(buffer, 0, buffer.length, port, host, (err, bytes) => {\r\n // TODO: Don't ignore errors.\r\n udp.close();\r\n });\r\n }\r\n\r\n _emptyReceiverReport(): Buffer {\r\n const report = Buffer.alloc(8);\r\n const version = 2;\r\n const paddingBit = 0;\r\n const reportCount = 0; // an empty report\r\n const packetType = 201; // Receiver Report\r\n const length = report.length / 4 - 1; // num 32 bit words minus 1\r\n report[0] = (version << 6) + (paddingBit << 5) + reportCount;\r\n report[1] = packetType;\r\n report[2] = (length >> 8) & 0xff;\r\n report[3] = (length >> 0) & 0xff;\r\n report[4] = (this.clientSSRC >> 24) & 0xff;\r\n report[5] = (this.clientSSRC >> 16) & 0xff;\r\n report[6] = (this.clientSSRC >> 8) & 0xff;\r\n report[7] = (this.clientSSRC >> 0) & 0xff;\r\n\r\n return report;\r\n }\r\n\r\n async _socketWrite(socket: SocketUnion, data: Buffer): Promise {\r\n return new Promise((resolve, reject) => {\r\n setTimeout(() => {\r\n socket.write(data, (error: any) => {\r\n if (error) {\r\n reject(error);\r\n } else {\r\n resolve(undefined);\r\n }\r\n })\r\n }, 20);\r\n })\r\n }\r\n\r\n ntpBaseDate_ms = new Date(\"1900/1/1\").getTime();\r\n\r\n // Note we have had a RTP Packet in Yellowstone for many years, but the Audio Backchennal code added another object also called RTPPacket\r\n GetWallClockTime(packet: util.RTPPacket, detail: Detail): Date | undefined {\r\n\r\n // Add Wall Clock Time\r\n if (detail.sr_ntpMSW != undefined && detail.sr_ntpLSW != undefined && detail.sr_rtptimestamp != undefined && detail.mediaSource.rtp[0].rate != undefined) {\r\n let refTimestampSecs = detail.sr_rtptimestamp / detail.mediaSource.rtp[0].rate; // H264 is 90 kHz clock rate\r\n let packetTimestampSecs = packet.timestamp / detail.mediaSource.rtp[0].rate; // eg 90kHz\r\n let packetTimestampDeltaSecs = packetTimestampSecs - refTimestampSecs;\r\n let refTimestamp = new Date(this.ntpBaseDate_ms + (detail.sr_ntpMSW * 1000) + ((detail.sr_ntpLSW/Math.pow(2,32))*1000));\r\n let wallclockTime = new Date(refTimestamp.getTime() + (packetTimestampDeltaSecs*1000));\r\n return wallclockTime;\r\n }\r\n\r\n // Could not generate a Wall Clock Time\r\n return undefined;\r\n }\r\n\r\n}\r\n\r\nexport { RTPPacket, RTCPPacket } from \"./util\";\r\n"]}
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This is RTP with Feedback (via RTCP) to request Keyframes via RTCP\r\n\r\nconst STATUS_OK = 200;\r\nconst STATUS_UNAUTH = 401;\r\n\r\n// The WWW_AUTH is of the format\r\n// TOKEN key=value\r\n// TOKEN key1=value1,key2=value2\r\n// TOKEN key1=\"value1\",key2=value2\r\n\r\n// RegEx reminder ? = Zero or One item\r\n// * = Zero or More items\r\n// + = 1 or More items\r\n// \\s is whitespace. But we need to 'escape the slash', hence \\\\s (or put the regex in / / characters)\r\n// ?= is a lookahead\r\n\r\n// The RegEx has two 'Groups'\r\n// \r\n// Group 1 (finding the Key)\r\n// Look for one or more characters (a..z or A..Z)\r\n// then look for whitespace\r\n// then look for 'equals'\r\n// then look for whitespace\r\n// then look for an optional Quote character\r\n//\r\n// Group 2 (finding the Value) -\r\n// Look for EITHER 'look backwards for a Quote', some characters, 'lookahead for a Quote'\r\n// OR some characters until (by looking ahead) you can see that another key comes next. The lookahead is 'optinal whitespace' 'comma' 'optional whitespace' 'chars' 'optinal whitespace' 'equals'\r\n// OR some characters followed by 'optinal whitespace'\r\n\r\nconst WWW_AUTH = \"WWW-Authenticate\";\r\nconst WWW_AUTH_REGEX = new RegExp('([a-zA-Z]+)\\\\s*=\\\\s*\"?((?<=\").*?(?=\")|.*?(?=\\\\s*,?\\\\s*[a-zA-Z]+\\\\s*=)|.+[^\\\\s])', \"g\");\r\n\r\nenum ReadStates {\r\n SEARCHING,\r\n READING_RTSP_HEADER,\r\n READING_RTSP_PAYLOAD,\r\n READING_RAW_PACKET_SIZE,\r\n READING_RAW_PACKET,\r\n}\r\n\r\ntype Connection = \"udp\" | \"tcp\";\r\n\r\ntype AuthOptions = {\r\n type: \"Digest\" | \"Basic\",\r\n realm?: string,\r\n nonce?: string,\r\n algorithm?: \"MD5\" | \"SHA-256\",\r\n};\r\n\r\ntype Headers = {\r\n [key: string]: string | number | undefined;\r\n Session?: string;\r\n Location?: string;\r\n CSeq?: number;\r\n \"WWW-Authenticate\"?: string;\r\n Transport?: string;\r\n Unsupported?: string;\r\n};\r\n\r\n// Details for each Session within the RTSP Stream (eg video session, audio session, metadata session)\r\ntype Detail = {\r\n codec: string;\r\n mediaSource: ({ // cannot work out how to pull this type in\r\n type: string;\r\n port: number;\r\n protocol: string;\r\n payloads?: string | undefined;\r\n } & transform.MediaDescription); // get Type from the interface\r\n transport: Transport['parameters']; // get Type from the interface\r\n isH264: boolean; // legacy API\r\n rtpChannel: number;\r\n rtcpChannel: number;\r\n\r\n // Cache any optional RTCP Sender Report values (used to calculate Wall Clock Time)\r\n sr_ntpMSW?: number;\r\n sr_ntpLSW?: number;\r\n sr_rtptimestamp?: number;\r\n};\r\n\r\nexport default class RTSPClient extends EventEmitter {\r\n username: string;\r\n password: string;\r\n headers: { [key: string]: string };\r\n\r\n isConnected = false;\r\n closed = false;\r\n\r\n // These are all set in #connect or #_netConnect.\r\n\r\n _url?: string;\r\n _client?: SocketUnion;\r\n _cSeq = 0;\r\n _unsupportedExtensions?: string[];\r\n _authOpions?: AuthOptions;\r\n // Example: 'SessionId'[';timeout=seconds']\r\n _session?: string;\r\n _keepAliveID?: NodeJS.Timeout;\r\n _nextFreeInterleavedChannel = 0;\r\n _nextFreeUDPPort = 5000;\r\n\r\n readState: ReadStates = ReadStates.SEARCHING;\r\n\r\n // Used as a cache for the data stream.\r\n // What's in here is based on current #readState.\r\n messageBytes: number[] = [];\r\n\r\n // Used for parsing RTSP responses,\r\n\r\n // Content-Length header in the RTSP message.\r\n rtspContentLength = 0;\r\n rtspStatusLine = \"\";\r\n rtspHeaders: Headers = {};\r\n\r\n // Used for parsing RTP/RTCP responses.\r\n\r\n rtspPacketLength = 0;\r\n rtspPacket = Buffer.from(\"\");\r\n rtspPacketPointer = 0;\r\n\r\n // Used in #_emptyReceiverReport.\r\n clientSSRC = generateSSRC();\r\n\r\n tcpSocket: SocketUnion = new net.Socket();\r\n setupResult: Array = [];\r\n constructor(\r\n username: string,\r\n password: string,\r\n headers?: { [key: string]: string }\r\n ) {\r\n super();\r\n\r\n this.username = username;\r\n this.password = password;\r\n this.headers = {\r\n ...(headers || {}),\r\n \"User-Agent\": \"yellowstone/3.x\",\r\n };\r\n }\r\n\r\n // This manages the lifecycle for the RTSP connection\r\n // over TCP.\r\n //\r\n // Sets #_client.\r\n //\r\n // Handles receiving data & closing port, called during\r\n // #connect.\r\n _netConnect(hostname: string, port: number, secure: boolean = false): Promise {\r\n return new Promise((resolve, reject) => {\r\n // Set after listeners defined.\r\n\r\n const errorListener = (err: any) => {\r\n client.removeListener(\"error\", errorListener);\r\n reject(err);\r\n };\r\n\r\n const postConnectErrorListener = (err: any) => {\r\n client.removeListener(\"error\", postConnectErrorListener);\r\n this.emit(\"error\", err);\r\n reject(err);\r\n };\r\n\r\n const closeListener = () => {\r\n client.removeListener(\"close\", closeListener);\r\n this.emit(\"close\");\r\n this.close(true);\r\n };\r\n\r\n const responseListener = (responseName: string, headers: Headers) => {\r\n const name = responseName.split(\" \")[0];\r\n\r\n if (name.indexOf(\"RTSP/\") === 0) {\r\n return;\r\n }\r\n\r\n if (name === \"REDIRECT\" || name === \"ANNOUNCE\") {\r\n this.respond(\"200 OK\", { CSeq: headers.CSeq });\r\n }\r\n\r\n if (name === \"REDIRECT\" && headers.Location) {\r\n this.close();\r\n this.connect(headers.Location);\r\n }\r\n };\r\n\r\n // rtsp or rtsps(with tls)\r\n let client: SocketUnion;\r\n if (secure == false) {\r\n client = net.connect(port, hostname, () => {\r\n this.isConnected = true;\r\n this._client = client;\r\n\r\n client.removeListener(\"error\", errorListener);\r\n client.on(\"error\", postConnectErrorListener);\r\n\r\n this.on(\"response\", responseListener);\r\n resolve(this);\r\n });\r\n }\r\n else {\r\n const options: tls.ConnectionOptions = {\r\n rejectUnauthorized: false\r\n };\r\n client = tls.connect(port, hostname, options, () => {\r\n console.log(\"TLS Connection\");\r\n this.isConnected = true;\r\n this._client = client;\r\n\r\n client.removeListener(\"error\", errorListener);\r\n\r\n this.on(\"response\", responseListener);\r\n resolve(this);\r\n });\r\n }\r\n\r\n client.on(\"data\", this._onData.bind(this));\r\n client.on(\"error\", errorListener);\r\n client.on(\"close\", closeListener);\r\n this.tcpSocket = client;\r\n });\r\n }\r\n\r\n async connect(\r\n url: string,\r\n {\r\n keepAlive = true,\r\n connection = \"udp\",\r\n secure = false,\r\n }: { keepAlive: boolean; connection?: Connection, secure: boolean } = {\r\n keepAlive: true,\r\n connection: \"udp\",\r\n secure: false\r\n }\r\n ): Promise {\r\n const { hostname, port } = urlParse((this._url = url));\r\n if (!hostname) {\r\n throw new Error(\"URL parsing error in connect method.\");\r\n }\r\n\r\n const details: Detail[] = [];\r\n\r\n await this._netConnect(hostname, parseInt(port || \"554\"), secure);\r\n await this.request(\"OPTIONS\");\r\n\r\n const describeRes = await this.request(\"DESCRIBE\", {\r\n Accept: \"application/sdp\",\r\n });\r\n if (!describeRes || !describeRes.mediaHeaders) {\r\n throw new Error(\r\n \"No media headers on DESCRIBE; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n // For now, only RTP/AVP and RTP/AVPF are supported. (Some RTSPS servers use RTP/SAVP)\r\n const { media } = transform.parse(describeRes.mediaHeaders.join(\"\\r\\n\"));\r\n\r\n // Loop over the Media Streams in the SDP looking for Video or Audio\r\n // In theory the SDP can contain multiple Video and Audio Streams. We only want one of each type\r\n let hasVideo = false;\r\n let hasAudio = false;\r\n let hasMetaData = false;\r\n let hasBackchannel = false;\r\n\r\n for (let x = 0; x < media.length; x++) {\r\n let needSetup = false;\r\n let codec = \"\";\r\n const mediaSource = media[x];\r\n\r\n\r\n // RFC says \"If none of the direction attributes (\"sendonly\", \"recvonly\", \"inactive\", and \"sendrecv\") are present,\r\n // the \"sendrecv\" SHOULD be assumed\r\n if (mediaSource.direction == undefined) mediaSource.direction = \"sendrecv\"; // Wowza does not send 'direction'\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H264\"\r\n ) {\r\n this.emit(\"log\", \"H264 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H264\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H265\"\r\n ) {\r\n this.emit(\"log\", \"H265 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H265\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec === \"H266\"\r\n ) {\r\n this.emit(\"log\", \"H266 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"H266\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"video\" &&\r\n (mediaSource.protocol === RTP_AVP || mediaSource.protocol === RTP_AVPF) &&\r\n mediaSource.rtp[0].codec === \"AV1\"\r\n ) {\r\n this.emit(\"log\", \"AV1 Video Stream Found in SDP\", \"\");\r\n if (hasVideo == false) {\r\n needSetup = true;\r\n hasVideo = true;\r\n codec = \"AV1\";\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"audio\" &&\r\n (mediaSource.direction === \"recvonly\" || mediaSource.direction === \"sendrecv\") &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec.toLowerCase() === \"mpeg4-generic\" && // (RFC examples are lower case. Axis cameras use upper case)\r\n mediaSource.fmtp[0].config.includes(\"AAC\")\r\n ) {\r\n this.emit(\"log\", \"AAC Audio Stream Found in SDP\", \"\");\r\n if (hasAudio == false) {\r\n needSetup = true;\r\n hasAudio = true;\r\n codec = \"AAC\";\r\n }\r\n }\r\n\r\n if (mediaSource.type === \"audio\" &&\r\n mediaSource.direction === \"sendonly\" &&\r\n mediaSource.protocol === RTP_AVP) {\r\n this.emit(\"log\", \"Audio backchannel Found in SDP\", \"\");\r\n if (hasBackchannel == false) {\r\n needSetup = true;\r\n hasBackchannel = true;\r\n codec = mediaSource.rtp[0].codec;\r\n }\r\n }\r\n\r\n if (\r\n mediaSource.type === \"application\" &&\r\n mediaSource.protocol === RTP_AVP &&\r\n mediaSource.rtp[0].codec.toLowerCase() === \"vnd.onvif.metadata\"\r\n ) {\r\n this.emit(\"log\", \"ONVIF Meta Data Found in SDP\", \"\");\r\n if (hasMetaData == false) {\r\n needSetup = true;\r\n hasMetaData = true;\r\n codec = \"vnd.onvif.metadata\";\r\n }\r\n }\r\n\r\n if (needSetup) {\r\n let streamurl = \"\";\r\n // The 'control' in the SDP can be a relative or absolute uri\r\n if (mediaSource.control) {\r\n if (mediaSource.control.toLowerCase().startsWith(\"rtsp://\")) {\r\n // absolute path\r\n streamurl = mediaSource.control;\r\n } else {\r\n // relative path\r\n streamurl = this._url + \"/\" + mediaSource.control;\r\n }\r\n }\r\n\r\n // Perform a SETUP on the streamurl\r\n // either 'udp' RTP/RTCP packets\r\n // or with 'tcp' RTP/TCP packets which are interleaved into the TCP based RTSP socket\r\n let setupRes;\r\n let rtpChannel: number;\r\n let rtcpChannel: number;\r\n let rtpReceiver: dgram.Socket|null = null; // UDP mode init value\r\n let rtcpReceiver: dgram.Socket|null = null; // UDP mode init value\r\n\r\n if (connection === \"udp\") {\r\n // Create a pair of UDP listeners, even numbered port for RTP\r\n // and odd numbered port for RTCP\r\n\r\n rtpChannel = this._nextFreeUDPPort;\r\n rtcpChannel = this._nextFreeUDPPort + 1;\r\n this._nextFreeUDPPort += 2;\r\n\r\n const rtpPort = rtpChannel;\r\n rtpReceiver = dgram.createSocket(\"udp4\");\r\n\r\n rtpReceiver.on(\"message\", (buf, remote) => {\r\n let packet = parseRTPPacket(buf);\r\n\r\n // Add wall clock time\r\n const detail = this.setupResult.find(item => item.rtpChannel == rtpChannel);\r\n if (detail != undefined) packet.wallclockTime = this.GetWallClockTime(packet, detail);\r\n\r\n this.emit(\"data\", rtpPort, packet.payload, packet);\r\n });\r\n\r\n const rtcpPort = rtcpChannel;\r\n rtcpReceiver = dgram.createSocket(\"udp4\");\r\n\r\n rtcpReceiver.on(\"message\", (buf, remote) => {\r\n const packet = parseRTCPPacket(buf);\r\n\r\n // If this is a Sender Report, cache the NTP Wall Clock data\r\n if (packet.packetType == 200 && packet.senderReport != undefined) {\r\n let detail = this.setupResult.find(item => item.rtcpChannel == rtcpChannel);\r\n if (detail != undefined) {\r\n detail.sr_ntpMSW = packet.senderReport.ntpTimestampMSW;\r\n detail.sr_ntpLSW = packet.senderReport.ntpTimestampLSW;\r\n detail.sr_rtptimestamp = packet.senderReport.rtpTimestamp;\r\n }\r\n }\r\n\r\n this.emit(\"controlData\", rtcpPort, packet);\r\n\r\n const receiver_report = this._emptyReceiverReport();\r\n this._sendUDPData(remote.address, remote.port, receiver_report);\r\n });\r\n\r\n // Block until both UDP sockets are open.\r\n\r\n await new Promise((resolve) => {\r\n rtpReceiver?.bind(rtpPort, () => resolve({}));\r\n });\r\n\r\n await new Promise((resolve) => {\r\n rtcpReceiver?.bind(rtcpPort, () => resolve({}));\r\n });\r\n\r\n const setupHeader = {\r\n Transport: `RTP/AVP;unicast;client_port=${rtpPort}-${rtcpPort}`,\r\n };\r\n if (this._session)\r\n Object.assign(setupHeader, { Session: this._session });\r\n setupRes = await this.request(\"SETUP\", setupHeader, streamurl);\r\n } else if (connection === \"tcp\") {\r\n // channel 0, RTP\r\n // channel 1, RTCP\r\n\r\n rtpChannel = this._nextFreeInterleavedChannel;\r\n rtcpChannel = this._nextFreeInterleavedChannel + 1;\r\n this._nextFreeInterleavedChannel += 2;\r\n\r\n const setupHeader = {\r\n Transport: `RTP/AVP/TCP;interleaved=${rtpChannel}-${rtcpChannel}`,\r\n };\r\n if (this._session)\r\n Object.assign(setupHeader, { Session: this._session }); // not used on first SETUP\r\n setupRes = await this.request(\"SETUP\", setupHeader, streamurl);\r\n } else {\r\n throw new Error(\r\n `Connection parameter to RTSPClient#connect is ${connection}, not udp or tcp!`\r\n );\r\n }\r\n\r\n if (!setupRes) {\r\n throw new Error(\r\n \"No SETUP response; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n const { headers } = setupRes;\r\n\r\n if (!headers.Transport) {\r\n throw new Error(\r\n \"No Transport header on SETUP; RTSP server is broken (sanity check)\"\r\n );\r\n }\r\n\r\n const transport = parseTransport(headers.Transport);\r\n if (\r\n // TCP\r\n transport.protocol !== \"RTP/AVP/TCP\" &&\r\n // UDP\r\n transport.protocol !== \"RTP/AVP\" &&\r\n // UDP\r\n transport.protocol !== \"RTP/AVP/UDP\" // Panasonic cameras send this\r\n ) {\r\n throw new Error(\r\n \"Only RTSP servers supporting RTP/AVP or RTP/AVP/UDP or RTP/AVP/TCP are supported at this time.\"\r\n );\r\n }\r\n\r\n // Patch from zoolyka (Zoltan Hajdu).\r\n // Try to open a hole in the NAT router (to allow incoming UDP packets)\r\n // by send a UDP packet for RTP and RTCP to the remote RTSP server.\r\n // Note, Roger did not have a router that needed this so the feature is untested.\r\n // May be better to change the RTCP message to a Receiver Report, leaving the RTP message as zero bytes\r\n if (connection === \"udp\" && transport && rtpReceiver && rtcpReceiver) {\r\n rtpReceiver.send(Buffer.from(''), Number(transport.parameters[\"server_port\"].split(\"-\")[0]), hostname);\r\n rtcpReceiver.send(Buffer.from(''), Number(transport.parameters[\"server_port\"].split(\"-\")[1]), hostname);\r\n }\r\n\r\n if (headers.Unsupported) {\r\n this._unsupportedExtensions = headers.Unsupported.split(\",\");\r\n }\r\n\r\n if (headers.Session) {\r\n this._session = headers.Session.split(\";\")[0];\r\n }\r\n\r\n const detail: Detail = {\r\n codec,\r\n mediaSource,\r\n transport: transport.parameters,\r\n isH264: codec === \"H264\", // legacy API\r\n rtpChannel,\r\n rtcpChannel,\r\n };\r\n\r\n details.push(detail);\r\n } // end if (needSetup)\r\n } // end for loop, looping over each media stream\r\n\r\n if (keepAlive) {\r\n // Start a Timer to send OPTIONS every 20 seconds to keep stream alive\r\n // using the Session ID\r\n this._keepAliveID = setInterval(() => {\r\n this.request(\"OPTIONS\", { Session: this._session });\r\n // this.request(\"OPTIONS\");\r\n }, 20 * 1000);\r\n }\r\n\r\n this.setupResult = details;\r\n return details;\r\n }\r\n\r\n request(\r\n requestName: string,\r\n headersParam: Headers = {},\r\n url?: string\r\n ): Promise<{ headers: Headers; mediaHeaders?: string[] } | void> {\r\n if (!this._client) {\r\n return Promise.resolve();\r\n }\r\n\r\n if (!url) {\r\n url = this._url;\r\n }\r\n\r\n const id = ++this._cSeq;\r\n // mutable via string addition\r\n let req = `${requestName} ${url} RTSP/1.0\\r\\nCSeq: ${id}\\r\\n`;\r\n\r\n const headers = {\r\n ...this.headers,\r\n ...headersParam,\r\n };\r\n\r\n if (this._authOpions) {\r\n Object.assign(headers, {\r\n Authorization: this._generateAuthString(requestName, url),\r\n });\r\n }\r\n\r\n // NOTE:\r\n // If we cache the Authenitcation Type (Direct or Basic) then we could\r\n // re-compute an Authorization Header here and include in the RTSP Command\r\n // This would make connections a faster with fewer round-trips to the RTSP Server\r\n\r\n req += Object.entries(headers)\r\n .map(([key, value]) => `${key}: ${value}\\r\\n`)\r\n .join(\"\");\r\n\r\n this.emit(\"log\", req, \"C->S\");\r\n // Make sure to add an empty line after the request.\r\n this._client.write(`${req}\\r\\n`);\r\n\r\n return new Promise((resolve, reject) => {\r\n const responseHandler = (\r\n responseName: string,\r\n resHeaders: Headers,\r\n mediaHeaders: string[]\r\n ) => {\r\n const firstAnswer: string = String(resHeaders[\"\"]) || \"\";\r\n if (firstAnswer.indexOf(\"401\") >= 0 && 'Authorization' in headers) {\r\n // If the RTSP Command we sent included an Authorization and we have 401 error, then reject()\r\n reject(new Error(`Bad RTSP credentials!`));\r\n return;\r\n }\r\n if (resHeaders.CSeq !== id) {\r\n return;\r\n }\r\n\r\n this.removeListener(\"response\", responseHandler);\r\n\r\n const statusCode = parseInt(responseName.split(\" \")[1]);\r\n\r\n if (statusCode === STATUS_OK) {\r\n if (mediaHeaders.length > 0) {\r\n resolve({\r\n headers: resHeaders,\r\n mediaHeaders,\r\n });\r\n } else {\r\n resolve({\r\n headers: resHeaders,\r\n });\r\n }\r\n } else {\r\n const authHeader = resHeaders[WWW_AUTH];\r\n\r\n // We have status code unauthenticated.\r\n if (statusCode === STATUS_UNAUTH && authHeader) {\r\n this._authOpions = {\r\n type: authHeader.split(\" \")[0] as AuthOptions[\"type\"],\r\n algorithm: \"MD5\", // Default to MD5 if no algorthm is given. Milestone's RTSP server also supports SHA-256 for FIPS\r\n }\r\n\r\n // Get auth properties from WWW_AUTH header.\r\n let match = WWW_AUTH_REGEX.exec(authHeader);\r\n while (match != null) {\r\n const prop = match[1];\r\n\r\n if (prop == \"realm\" && match[2]) {\r\n this._authOpions.realm = match[2];\r\n }\r\n\r\n if (prop == \"nonce\" && match[2]) {\r\n this._authOpions.nonce = match[2];\r\n }\r\n\r\n if (prop == \"algorithm\" && match[2]) {\r\n this._authOpions.algorithm = match[2] as AuthOptions[\"algorithm\"];\r\n }\r\n\r\n match = WWW_AUTH_REGEX.exec(authHeader);\r\n }\r\n\r\n // Repeat the request, now _authOptions will be detected and the Authorization header will be generated\r\n resolve(this.request(requestName, headers, url));\r\n return;\r\n }\r\n\r\n reject(new Error(`Bad RTSP status code ${statusCode}!`));\r\n return;\r\n }\r\n };\r\n\r\n this.on(\"response\", responseHandler);\r\n });\r\n }\r\n\r\n respond(status: string, headersParam: Headers = {}): void {\r\n if (!this._client) {\r\n return;\r\n }\r\n\r\n // mutable via string addition\r\n let res = `RTSP/1.0 ${status}\\r\\n`;\r\n\r\n const headers = {\r\n ...this.headers,\r\n ...headersParam,\r\n };\r\n\r\n res += Object.entries(headers)\r\n .map(([key, value]) => `${key}: ${value}\\r\\n`)\r\n .join(\"\");\r\n\r\n this.emit(\"log\", res, \"C->S\");\r\n this._client.write(`${res}\\r\\n`);\r\n }\r\n\r\n async play(): Promise {\r\n if (!this.isConnected) {\r\n throw new Error(\"Client is not connected.\");\r\n }\r\n\r\n await this.request(\"PLAY\", { Session: this._session });\r\n }\r\n\r\n async pause(): Promise {\r\n if (!this.isConnected) {\r\n throw new Error(\"Client is not connected.\");\r\n }\r\n\r\n await this.request(\"PAUSE\", { Session: this._session });\r\n }\r\n\r\n async sendAudioBackChannel(audioChunk: Buffer): Promise {\r\n let rtp, buf;\r\n const bufSize = 160;\r\n while (audioChunk.length > 0) {\r\n if (audioChunk.length > bufSize) {\r\n buf = audioChunk.slice(0, bufSize);\r\n audioChunk = audioChunk.slice(bufSize, audioChunk.length);\r\n } else {\r\n buf = audioChunk.slice(0, audioChunk.length);\r\n audioChunk = Buffer.from([]);\r\n }\r\n if (!rtp)\r\n rtp = new RTPPacket(buf);\r\n else\r\n rtp.payload = buf;\r\n // rtp.type = 8;// set động\r\n rtp.time += buf.length;\r\n rtp.seq++;\r\n const bufferLength = Buffer.alloc(2);\r\n bufferLength.writeUInt16BE(rtp.packet.length, 0);\r\n let channelInterleaved = this.setupResult.filter((value) => {\r\n return value.mediaSource.type === 'audio' && value.mediaSource.direction === 'sendonly';\r\n })[0].transport.interleaved;\r\n /* RTSP Interleaved Frame structure\r\n |dollar sign|channel identifier|data length|\r\n |1 Byte |1 Byte |2 Bytes |\r\n */\r\n channelInterleaved = channelInterleaved.split('-')[0];\r\n let interleavedHeader = Buffer.from([0x24]);// set '$'\r\n interleavedHeader = Buffer.concat([interleavedHeader, Buffer.from([channelInterleaved])]);\r\n interleavedHeader = Buffer.concat([interleavedHeader, bufferLength]);\r\n const dataToSend = Buffer.concat([interleavedHeader, rtp.packet]);\r\n await this._socketWrite(this.tcpSocket, dataToSend);\r\n }\r\n return;\r\n }\r\n\r\n async close(isImmediate = false): Promise {\r\n if (this.closed) return;\r\n this.closed = true;\r\n\r\n if (!this._client) {\r\n return;\r\n }\r\n\r\n if (!isImmediate) {\r\n await this.request(\"TEARDOWN\", {\r\n Session: this._session,\r\n });\r\n }\r\n\r\n this._client.end();\r\n this.removeAllListeners(\"response\");\r\n\r\n if (this._keepAliveID != undefined) {\r\n clearInterval(this._keepAliveID);\r\n this._keepAliveID = undefined;\r\n }\r\n\r\n this.isConnected = false;\r\n this._cSeq = 0;\r\n }\r\n\r\n _onData(data: Buffer): void {\r\n let index = 0;\r\n\r\n // $\r\n const PACKET_START = 0x24;\r\n // R\r\n const RTSP_HEADER_START = 0x52;\r\n // /n\r\n const ENDL = 10;\r\n\r\n while (index < data.length) {\r\n // read RTP or RTCP packet\r\n if (\r\n this.readState == ReadStates.SEARCHING &&\r\n data[index] == PACKET_START\r\n ) {\r\n this.messageBytes = [data[index]];\r\n index++;\r\n\r\n this.readState = ReadStates.READING_RAW_PACKET_SIZE;\r\n } else if (this.readState == ReadStates.READING_RAW_PACKET_SIZE) {\r\n // accumulate bytes for $, channel and length\r\n this.messageBytes.push(data[index]);\r\n index++;\r\n\r\n if (this.messageBytes.length == 4) {\r\n this.rtspPacketLength =\r\n (this.messageBytes[2] << 8) + this.messageBytes[3];\r\n\r\n if (this.rtspPacketLength > 0) {\r\n this.rtspPacket = Buffer.alloc(this.rtspPacketLength);\r\n this.rtspPacketPointer = 0;\r\n this.readState = ReadStates.READING_RAW_PACKET;\r\n } else {\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n }\r\n } else if (this.readState == ReadStates.READING_RAW_PACKET) {\r\n this.rtspPacket[this.rtspPacketPointer++] = data[index];\r\n index++;\r\n\r\n if (this.rtspPacketPointer == this.rtspPacketLength) {\r\n const packetChannel = this.messageBytes[1];\r\n if ((packetChannel & 0x01) === 0) {\r\n // even number\r\n let packet = parseRTPPacket(this.rtspPacket);\r\n\r\n // Get the Session Detail\r\n const detail = this.setupResult.find(item => item.rtpChannel == packetChannel);\r\n if (detail != undefined) packet.wallclockTime = this.GetWallClockTime(packet, detail);\r\n\r\n this.emit(\"data\", packetChannel, packet.payload, packet);\r\n }\r\n if ((packetChannel & 0x01) === 1) {\r\n // odd number\r\n const packet = parseRTCPPacket(this.rtspPacket);\r\n\r\n // If this is a Sender Report, cache the NTP Wall Clock data\r\n if (packet.packetType == 200 && packet.senderReport != undefined) {\r\n let detail = this.setupResult.find(item => item.rtcpChannel == packetChannel);\r\n if (detail != undefined) {\r\n detail.sr_ntpMSW = packet.senderReport.ntpTimestampMSW;\r\n detail.sr_ntpLSW = packet.senderReport.ntpTimestampLSW;\r\n detail.sr_rtptimestamp = packet.senderReport.rtpTimestamp;\r\n }\r\n }\r\n \r\n this.emit(\"controlData\", packetChannel, packet);\r\n\r\n const receiver_report = this._emptyReceiverReport();\r\n this._sendInterleavedData(packetChannel, receiver_report);\r\n }\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n // read response data\r\n } else if (\r\n this.readState == ReadStates.SEARCHING &&\r\n data[index] == RTSP_HEADER_START\r\n ) {\r\n // found the start of a RTSP rtsp_message\r\n this.messageBytes = [data[index]];\r\n index++;\r\n\r\n this.readState = ReadStates.READING_RTSP_HEADER;\r\n } else if (this.readState == ReadStates.READING_RTSP_HEADER) {\r\n // Reading a RTSP message.\r\n\r\n // Add character to the messageBytes\r\n // Ignore /r (13) but keep /n (10)\r\n if (data[index] != 13) {\r\n this.messageBytes.push(data[index]);\r\n }\r\n index++;\r\n\r\n // if we have two new lines back to back then we have a complete RTSP command,\r\n // note we may still need to read the Content Payload (the body) e.g. the SDP\r\n if (\r\n this.messageBytes.length >= 2 &&\r\n this.messageBytes[this.messageBytes.length - 2] == ENDL &&\r\n this.messageBytes[this.messageBytes.length - 1] == ENDL\r\n ) {\r\n // Parse the Header\r\n\r\n const text = String.fromCharCode.apply(null, this.messageBytes);\r\n const lines = text.split(\"\\n\");\r\n\r\n this.rtspContentLength = 0;\r\n this.rtspStatusLine = lines[0];\r\n this.rtspHeaders = {};\r\n\r\n lines.forEach((line) => {\r\n const indexOf = line.indexOf(\":\");\r\n\r\n if (indexOf !== line.length - 1) {\r\n const key = line.substring(0, indexOf).trim();\r\n const data = line.substring(indexOf + 1).trim();\r\n\r\n if (key == \"Session\") this.rtspHeaders[key] = data;\r\n\r\n else if (key == \"WWW-Authenticate\") {\r\n // Handle multiple WWW-Authenticate entries and pick the 'best'\r\n // We prefer 'Digest' over 'Basic'\r\n // We preger 'Digest SHAxxx' over 'Digest MD5' or 'Digest with no algorithm (defaults to MD5) (STILL TODO)\r\n if (key in this.rtspHeaders) {\r\n console.log(\"Duplicate WWW-Authenticate keys\")\r\n if (data.startsWith(\"Digest\") && this.rtspHeaders[key]?.startsWith(\"Basic\")) {\r\n this.rtspHeaders[key] = data; // Replace Basic with Digest\r\n }\r\n console.log(\"Keeping WWW-Authenticate: \" + this.rtspHeaders[key]);\r\n } else {\r\n this.rtspHeaders[key] = data;\r\n }\r\n }\r\n\r\n else {\r\n // Store the result as either a String type or a Number type\r\n this.rtspHeaders[key] =\r\n data.match(/^[0-9]+$/)\r\n ? parseInt(data, 10)\r\n : data;\r\n }\r\n\r\n // workaround for buggy Hipcam RealServer/V1.0 camera which returns Content-length and not Content-Length\r\n if (key.toLowerCase() == \"content-length\") {\r\n this.rtspContentLength = parseInt(data, 10);\r\n }\r\n }\r\n });\r\n\r\n // if no content length, there there's no media headers\r\n // emit the message\r\n if (!this.rtspContentLength) {\r\n this.emit(\"log\", text, \"S->C\");\r\n\r\n this.emit(\"response\", this.rtspStatusLine, this.rtspHeaders, []);\r\n this.readState = ReadStates.SEARCHING;\r\n } else {\r\n this.messageBytes = [];\r\n this.readState = ReadStates.READING_RTSP_PAYLOAD;\r\n }\r\n }\r\n } else if (\r\n this.readState == ReadStates.READING_RTSP_PAYLOAD &&\r\n this.messageBytes.length < this.rtspContentLength\r\n ) {\r\n // Copy data into the RTSP payload\r\n this.messageBytes.push(data[index]);\r\n index++;\r\n\r\n if (this.messageBytes.length == this.rtspContentLength) {\r\n const text = String.fromCharCode.apply(null, this.messageBytes);\r\n const mediaHeaders = text.split(\"\\n\");\r\n\r\n // Emit the RTSP message\r\n this.emit(\r\n \"log\",\r\n String.fromCharCode.apply(null, this.messageBytes) + text,\r\n \"S->C\"\r\n );\r\n\r\n this.emit(\r\n \"response\",\r\n this.rtspStatusLine,\r\n this.rtspHeaders,\r\n mediaHeaders\r\n );\r\n this.readState = ReadStates.SEARCHING;\r\n }\r\n } else {\r\n // unexpected data\r\n throw new Error(\r\n \"Bug in RTSP data framing, please file an issue with the author with stacktrace.\"\r\n );\r\n }\r\n } // end while\r\n }\r\n\r\n _sendInterleavedData(channel: number, buffer: Buffer): void {\r\n if (!this._client) {\r\n return;\r\n }\r\n\r\n const req = `${buffer.length} bytes of interleaved data on channel ${channel}`;\r\n this.emit(\"log\", req, \"C->S\");\r\n\r\n const header = Buffer.alloc(4);\r\n header[0] = 0x24; // ascii $\r\n header[1] = channel;\r\n header[2] = (buffer.length >> 8) & 0xff;\r\n header[3] = (buffer.length >> 0) & 0xff;\r\n\r\n const data = Buffer.concat([header, buffer]);\r\n this._client.write(data);\r\n }\r\n\r\n _sendUDPData(host: string, port: number, buffer: Buffer): void {\r\n const udp = dgram.createSocket(\"udp4\");\r\n udp.send(buffer, 0, buffer.length, port, host, (err, bytes) => {\r\n // TODO: Don't ignore errors.\r\n udp.close();\r\n });\r\n }\r\n\r\n _emptyReceiverReport(): Buffer {\r\n const report = Buffer.alloc(8);\r\n const version = 2;\r\n const paddingBit = 0;\r\n const reportCount = 0; // an empty report\r\n const packetType = 201; // Receiver Report\r\n const length = report.length / 4 - 1; // num 32 bit words minus 1\r\n report[0] = (version << 6) + (paddingBit << 5) + reportCount;\r\n report[1] = packetType;\r\n report[2] = (length >> 8) & 0xff;\r\n report[3] = (length >> 0) & 0xff;\r\n report[4] = (this.clientSSRC >> 24) & 0xff;\r\n report[5] = (this.clientSSRC >> 16) & 0xff;\r\n report[6] = (this.clientSSRC >> 8) & 0xff;\r\n report[7] = (this.clientSSRC >> 0) & 0xff;\r\n\r\n return report;\r\n }\r\n\r\n async _socketWrite(socket: SocketUnion, data: Buffer): Promise {\r\n return new Promise((resolve, reject) => {\r\n setTimeout(() => {\r\n socket.write(data, (error: any) => {\r\n if (error) {\r\n reject(error);\r\n } else {\r\n resolve(undefined);\r\n }\r\n })\r\n }, 20);\r\n })\r\n }\r\n\r\n private _generateAuthString(requestName: string, url?: string): string {\r\n\r\n if (!url) {\r\n url = this._url;\r\n }\r\n\r\n let authString = \"\";\r\n if (!this._authOpions) return \"\";\r\n if (this._authOpions.type === \"Digest\") {\r\n // Digest Authentication\r\n\r\n // Select Hash Function, default to MD5\r\n const HashFunction = (this._authOpions.algorithm == \"SHA-256\" ? getSHA256Hash : getMD5Hash);\r\n\r\n const ha1 = HashFunction(\r\n `${this.username}:${this._authOpions.realm}:${this.password}`\r\n );\r\n const ha2 = HashFunction(`${requestName}:${url}`);\r\n const ha3 = HashFunction(`${ha1}:${this._authOpions.nonce}:${ha2}`);\r\n\r\n // Some RTSP servers to not accept \"algorithm=NNN\" in the authString and reject the authentication. So only add algorithm=ZZZZ when not using MD5\r\n if (this._authOpions.algorithm == \"MD5\")\r\n authString = `Digest username=\"${this.username}\",realm=\"${this._authOpions.realm}\",nonce=\"${this._authOpions.nonce}\",uri=\"${url}\",response=\"${ha3}\"`;\r\n else\r\n authString = `Digest username=\"${this.username}\",realm=\"${this._authOpions.realm}\",nonce=\"${this._authOpions.nonce}\",algorithm=${this._authOpions.algorithm},uri=\"${url}\",response=\"${ha3}\"`;\r\n } else if (this._authOpions.type === \"Basic\") {\r\n // Basic Authentication\r\n // https://xkcd.com/538/\r\n const b64 = Buffer.from(\r\n `${this.username}:${this.password}`\r\n ).toString(\"base64\");\r\n authString = `Basic ${b64}`;\r\n }\r\n return authString;\r\n }\r\n\r\n ntpBaseDate_ms = new Date(\"1900/1/1\").getTime();\r\n\r\n // Note we have had a RTP Packet in Yellowstone for many years, but the Audio Backchennal code added another object also called RTPPacket\r\n GetWallClockTime(packet: util.RTPPacket, detail: Detail): Date | undefined {\r\n\r\n // Add Wall Clock Time\r\n if (detail.sr_ntpMSW != undefined && detail.sr_ntpLSW != undefined && detail.sr_rtptimestamp != undefined && detail.mediaSource.rtp[0].rate != undefined) {\r\n let refTimestampSecs = detail.sr_rtptimestamp / detail.mediaSource.rtp[0].rate; // H264 is 90 kHz clock rate\r\n let packetTimestampSecs = packet.timestamp / detail.mediaSource.rtp[0].rate; // eg 90kHz\r\n let packetTimestampDeltaSecs = packetTimestampSecs - refTimestampSecs;\r\n let refTimestamp = new Date(this.ntpBaseDate_ms + (detail.sr_ntpMSW * 1000) + ((detail.sr_ntpLSW/Math.pow(2,32))*1000));\r\n let wallclockTime = new Date(refTimestamp.getTime() + (packetTimestampDeltaSecs*1000));\r\n return wallclockTime;\r\n }\r\n\r\n // Could not generate a Wall Clock Time\r\n return undefined;\r\n }\r\n\r\n}\r\n\r\nexport { RTPPacket, RTCPPacket } from \"./util\";\r\n"]}
\ No newline at end of file
diff --git a/dist/util.js.map b/dist/util.js.map
index da8143f..43e3af6 100644
--- a/dist/util.js.map
+++ b/dist/util.js.map
@@ -1 +1 @@
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padding,\n payloadType,\n hasExtensions,\n payload,\n length,\n paddingLength,\n };\n}\n\nexport interface SenderReport {\n ntpTimestampMSW: number;\n ntpTimestampLSW: number;\n rtpTimestamp: number;\n senderPacketCount: number;\n senderOctetCount: number;\n}\n\nexport interface RTCPPacket {\n buffer: Buffer;\n version: number;\n padding: number;\n receptionReportCount: number;\n packetType: number;\n length: number;\n ssrc: number;\n\n senderReport?: SenderReport;\n}\n\nexport function parseRTCPPacket(buffer: Buffer): RTCPPacket {\n\n // Packet Types\n // SR Sender Report 200\n // RR Receiver Report 201\n // SDES Source Description 202\n // BYE Goodbye 203\n // APP Application-Defined 204\n // RTPFB Generic RTP feedback 205\n // PSFB Payload-specific feedback 206\n // XR RTCP Extension 207\n const version = (buffer[0] >> 6);\n const padding = (buffer[0] >> 5) & 0x01;\n const receptionReportCount = (buffer[0]) & 0x1F;\n const packetType = buffer[1];\n const length = buffer[2] << 8 + 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sha256.digest(\"hex\");\n}\n\nexport interface Transport {\n protocol: string;\n parameters: { [key: string]: string };\n}\n\nexport function parseTransport(transport: string): Transport {\n const parameters: { [key: string]: string } = {};\n\n const parts = transport.split(\";\");\n const protocol = parts[0];\n\n for (let i = 0; i < parts.length; i++) {\n const part = parts[i];\n const index = part.indexOf(\"=\");\n\n if (index > -1 && index !== part.length - 1) {\n parameters[part.substring(0, index)] = part.substring(index + 1);\n }\n }\n\n return {\n protocol,\n parameters\n };\n}\n\nexport function randInclusive(min: number, max: number): number {\n min = Math.ceil(min);\n max = Math.floor(max);\n return Math.floor(Math.random() * (max - min + 1)) + min;\n}\n\nexport function generateSSRC(): number {\n return randInclusive(1, 0xffffffff);\n}\n\n// BitStream classes by 2018 Roger Hardiman, RJH Technical Consultancy Ltd\n// Write to a bitstream and read back as an array\n\nexport 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\ No newline at end of file
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{ createHash } from \"crypto\";\r\n\r\nexport interface RTPPacket {\r\n id: number;\r\n timestamp: number;\r\n marker: number;\r\n padding: number;\r\n hasExtensions: number;\r\n\r\n payload: Buffer;\r\n\r\n length: number;\r\n paddingLength: number;\r\n\r\n payloadType: number;\r\n\r\n // Additional information added to the Packet\r\n wallclockTime?: Date;\r\n}\r\n\r\nexport function parseRTPPacket(buffer: Buffer): RTPPacket {\r\n const padding = (buffer[0] >> 5) & 0x01\r\n let paddingLength = 0;\r\n if (padding == 1) {\r\n // padding size is the last byte of the RTP data\r\n paddingLength = buffer[buffer.length - 1];\r\n }\r\n const hasExtensions = (buffer[0] >> 4) & 0x01;\r\n const marker = (buffer[1]) >>> 7;\r\n const payloadType = buffer[1] & 0x7f;\r\n const num_csrc_identifiers = (buffer[0] & 0x0F);\r\n\r\n const payload = buffer.slice((num_csrc_identifiers * 4) + (hasExtensions ? 16 : 12)); // includes padding\r\n const length = payload.length;\r\n\r\n\r\n return {\r\n id: buffer.readUInt16BE(2),\r\n timestamp: buffer.readUInt32BE(4),\r\n marker,\r\n padding,\r\n payloadType,\r\n hasExtensions,\r\n payload,\r\n length,\r\n paddingLength,\r\n };\r\n}\r\n\r\nexport interface SenderReport {\r\n ntpTimestampMSW: number;\r\n ntpTimestampLSW: number;\r\n rtpTimestamp: number;\r\n senderPacketCount: number;\r\n senderOctetCount: number;\r\n}\r\n\r\nexport interface RTCPPacket {\r\n buffer: Buffer;\r\n version: number;\r\n padding: number;\r\n receptionReportCount: number;\r\n packetType: number;\r\n length: number;\r\n ssrc: number;\r\n\r\n senderReport?: SenderReport;\r\n}\r\n\r\nexport function parseRTCPPacket(buffer: Buffer): RTCPPacket {\r\n\r\n // Packet Types\r\n // SR Sender Report 200\r\n // RR Receiver Report 201\r\n // SDES Source Description 202\r\n // BYE Goodbye 203\r\n // APP Application-Defined 204\r\n // RTPFB Generic RTP feedback 205\r\n // PSFB Payload-specific feedback 206\r\n // XR RTCP Extension 207\r\n const version = (buffer[0] >> 6);\r\n const padding = (buffer[0] >> 5) & 0x01;\r\n const receptionReportCount = (buffer[0]) & 0x1F;\r\n const packetType = buffer[1];\r\n const length = buffer[2] << 8 + buffer[3]; // The length in 32 bit words (not the length in bytes)\r\n const ssrc = buffer[4] << 24 + buffer[5] << 16 + buffer[6] << 8 + buffer[7];\r\n\r\n let result: RTCPPacket = {\r\n buffer,\r\n version,\r\n padding,\r\n length,\r\n ssrc,\r\n receptionReportCount,\r\n packetType};\r\n\r\n if (packetType == 200) {\r\n let senderReport: SenderReport = {\r\n ntpTimestampMSW: buffer.readUInt32BE(8),\r\n ntpTimestampLSW: buffer.readUInt32BE(12),\r\n rtpTimestamp: buffer.readUInt32BE(16),\r\n senderPacketCount: buffer.readUInt32BE(20),\r\n senderOctetCount: buffer.readUInt32BE(24)\r\n };\r\n\r\n result.senderReport = senderReport;\r\n }\r\n\r\n return result;\r\n}\r\n\r\n// utility function for using crypto library\r\nexport function getMD5Hash(str: string): string {\r\n const md5 = createHash(\"md5\");\r\n md5.update(str);\r\n\r\n return md5.digest(\"hex\");\r\n}\r\n\r\nexport function getSHA256Hash(str: string): string {\r\n const sha256 = createHash(\"sha256\"); // use getHashes() to see what is supported\r\n sha256.update(str);\r\n\r\n return sha256.digest(\"hex\");\r\n}\r\n\r\nexport interface Transport {\r\n protocol: string;\r\n parameters: { [key: string]: string };\r\n}\r\n\r\nexport function parseTransport(transport: string): Transport {\r\n const parameters: { [key: string]: string } = {};\r\n\r\n const parts = transport.split(\";\");\r\n const protocol = parts[0];\r\n\r\n for (let i = 0; i < parts.length; i++) {\r\n const part = parts[i];\r\n const index = part.indexOf(\"=\");\r\n\r\n if (index > -1 && index !== part.length - 1) {\r\n parameters[part.substring(0, index)] = part.substring(index + 1);\r\n }\r\n }\r\n\r\n return {\r\n protocol,\r\n parameters\r\n };\r\n}\r\n\r\nexport function randInclusive(min: number, max: number): number {\r\n min = Math.ceil(min);\r\n max = Math.floor(max);\r\n return Math.floor(Math.random() * (max - min + 1)) + min;\r\n}\r\n\r\nexport function generateSSRC(): number {\r\n return randInclusive(1, 0xffffffff);\r\n}\r\n\r\n// BitStream classes by 2018 Roger Hardiman, RJH Technical Consultancy Ltd\r\n// Write to a bitstream and read back as an array\r\n\r\nexport class BitStream {\r\n\r\n data: number[] = []; // Array only stores 0 or 1 (one 'bit' per buffer item)\r\n // not very efficient on memory\r\n\r\n // Constructor\r\n // constructor() {}\r\n \r\n // Functions\r\n AddValue(value: number, num_bits: number): void {\r\n // Add each bit to the List\r\n for (let i = num_bits - 1; i >= 0; i--) {\r\n this.data.push((value >> i) & 0x01);\r\n }\r\n }\r\n\r\n AddHexString(hex_string: string): void {\r\n const hex_chars = hex_string.toUpperCase();\r\n\r\n for (let x = 0; x < hex_chars.length; x++) {\r\n const c = hex_chars.charAt(x);\r\n if (c == '0') this.AddValue(0, 4);\r\n else if (c == '1') this.AddValue(1, 4);\r\n else if (c == '2') this.AddValue(2, 4);\r\n else if (c == '3') this.AddValue(3, 4);\r\n else if (c == '4') this.AddValue(4, 4);\r\n else if (c == '5') this.AddValue(5, 4);\r\n else if (c == '6') this.AddValue(6, 4);\r\n else if (c == '7') this.AddValue(7, 4);\r\n else if (c == '8') this.AddValue(8, 4);\r\n else if (c == '9') this.AddValue(9, 4);\r\n else if (c == 'A') this.AddValue(10, 4);\r\n else if (c == 'B') this.AddValue(11, 4);\r\n else if (c == 'C') this.AddValue(12, 4);\r\n else if (c == 'D') this.AddValue(13, 4);\r\n else if (c == 'E') this.AddValue(14, 4);\r\n else if (c == 'F') this.AddValue(15, 4);\r\n }\r\n }\r\n\r\n Read(num_bits: number): number {\r\n // Read and remove items from the front of the list of bits\r\n if (this.data.length < num_bits) return 0;\r\n let result = 0;\r\n for (let i = 0; i < num_bits; i++) {\r\n result = result << 1;\r\n result = result + this.data[0];\r\n this.data.shift(); // remove the first item from the array\r\n }\r\n return result;\r\n }\r\n\r\n ToArray(): Buffer {\r\n const num_bytes = Math.ceil(this.data.length / 8.0);\r\n const array = Buffer.alloc(num_bytes);\r\n let ptr = 0;\r\n let shift = 7;\r\n for (let i = 0; i < this.data.length; i++) {\r\n array[ptr] += (this.data[i] << shift);\r\n if (shift == 0) {\r\n shift = 7;\r\n ptr++;\r\n }\r\n else {\r\n shift--;\r\n }\r\n }\r\n\r\n return array;\r\n }\r\n}\r\n"]}
\ No newline at end of file
diff --git a/package.json b/package.json
index 2f6c2db..68159c0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
{
"name": "yellowstone",
- "version": "3.0.7",
+ "version": "3.0.8",
"description": "An RTSP client for node.js.",
"main": "dist/index.js",
"repository": {