Can't connect to server from ESP32 client

[dwaynez]

I am running Wireguard on a raspberry pi. I can connect with a number of devices (Windows, Android) and everything appears to be setup properly. I am trying to setup an ESP32 with a web server, but web server times out trying to load the web page. When I turn off wireguard I am able to access the webserver. Any advice?

#define DEVMODE 0 // - comment out for production mode (remove print statements)
#include <EEPROM.h>
#include <TimeLib.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <WebSerialLite.h>
#include <AsyncTCP.h>
#include <AsyncElegantOTA.h>
#include <ESPAsyncWebServer.h>
#include <esp_task_wdt.h>
#include <WireGuard-ESP32.h>
#include <ESPping.h>

#define PRINTLN(...) Serial.println(VA_ARGS); WebSerial.println(VA_ARGS); wifi_send(t_state,String(VA_ARGS),true)
#define PRINT(...) Serial.print(VA_ARGS); WebSerial.print(VA_ARGS); wifi_send(t_state,String(VA_ARGS))
#define PRINTLN2(...) Serial.println(VA_ARGS); WebSerial.println(VA_ARGS)
#define PRINT2(...) Serial.print(VA_ARGS); WebSerial.print(VA_ARGS)
// #define PRINTLN(...)
// #define PRINT(...)

// WIFI communication constants
#define wifi_retry_max 500
#define host "10.6.0.1"
#define ssid "xxxx"
#define password "yyyy"
#define private_key "zzz"
#define remote_address "xxxxx.duckdns.org"
#define public_key "aaaaa"
#define remote_port 51820

WiFiClient client;
static WireGuard wg;
IPAddress local_ip(10,6,0,6);
// Define OTA variables
AsyncWebServer server(80);
const char* serverIndex = "<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">\n<title>ZHM Garage</title>\n<a href=""/update"">Update firmware
<a href=""/webserial"">Web Serial
<a href=""/vars"">Variables";

void setup() {
Serial.begin(115200);
WiFi.onEvent(Wifi_connected,ARDUINO_EVENT_WIFI_STA_CONNECTED);
WiFi.onEvent(Get_IPAddress, ARDUINO_EVENT_WIFI_STA_GOT_IP);
WiFi.onEvent(Wifi_disconnected, ARDUINO_EVENT_WIFI_STA_DISCONNECTED);
WiFi.begin(ssid, password);
delay(5000);

// Create the OTA server
server.on("/",      HTTP_GET, [](AsyncWebServerRequest *request) {request->send(200, "text/html", serverIndex); });
server.on("/vars",  HTTP_GET, [](AsyncWebServerRequest *request) {request->send(200, "text/html", SendHTML()); });
server.on("/get",   HTTP_GET, [](AsyncWebServerRequest *request) {char inputMessage[5];

    if (request->hasParam("debug_sw")) {
        request->getParam("debug_sw")->value().toCharArray(inputMessage,5);
        debug_sw = atoi(inputMessage);
        request->send(200, "text/html", "Value set. Press go back" );
    } else if (request->hasParam("reboot")) {
        request->getParam("alarmoff")->value().toCharArray(inputMessage,5);
        if (strcmp(inputMessage, "111") == 0) {
            request->send(200, "text/html", "Rebooting Press Go back" );
            ESP.restart();
        } else {
            request->send(200, "text/html", "Bad reboot code" );
        }
    }

});

AsyncElegantOTA.begin(&server);
WebSerial.begin(&server);
server.begin();

}

// Main processing loop
void loop() {
if (!wg_connected) {
Serial.println("Attempting WG connection");
wg_connect();

}

//Format variable page
String SendHTML(){
String ptr = " \n";
ptr +="<meta name="viewport" content="no-cache" content="width=device-width, initial-scale=1.0, user-scalable=no">\n";
ptr +="<title>Boat Warehouse variables</title>\n";
ptr +="\n";
ptr +="

Boat Warehouse variables

\n";
ptr +="\n";

ptr +="<form action="/get">";
ptr +="Debug Switch: <input type="number" value="";
ptr +=(String)debug_sw;
ptr +="" name="debug_sw">";
ptr +="<input type="submit" value="Submit">";
ptr +="
";

ptr +="<form action="/get">";
ptr +="Reboot: <input type="number" value="" name="reboot">";
ptr +="<input type="submit" value="Submit">";
ptr +="
";

ptr +="<form action="/get">";
ptr +="Alarm set on/off: <input type="number" value="" name="alarmoff">";
ptr +="<input type="submit" value="Submit">";
ptr +="
";

ptr +="<div id="webpage">\n";
ptr +="

Horn Status: ";
ptr +=(String)state[s_horn_status];
ptr +="

";
ptr +="\n";
ptr +="\n";
ptr +="\n";
return ptr;
}

//WIFI Connected
void Wifi_connected(WiFiEvent_t event, WiFiEventInfo_t info){
// wifi_connected = true;
Serial.println("WIFI Connected");
}

// WIFI IP address assigned
void Get_IPAddress(WiFiEvent_t event, WiFiEventInfo_t info){
Serial.print("WiFi connected with IP: ");
Serial.println(WiFi.localIP());
configTime(9 * 60 * 60, 0, "ntp.jst.mfeed.ad.jp", "ntp.nict.jp", "time.google.com");
wg_connect();
client_connect();
}

// WIF disconnected
void Wifi_disconnected(WiFiEvent_t event, WiFiEventInfo_t info){
Serial.println("Disconnected from WIFI access point");
// Serial.print("WiFi lost connection. Reason: ");
// Serial.println(info.disconnected.reason);
Serial.println("Reconnecting...");
WiFi.begin(ssid, password);
}

// Connect to wifi
void wg_connect() {
Serial.print("WireGuard IP1: ");
Serial.println(local_ip.toString());
if (wg.begin(
local_ip, // IP address of the local interface
private_key, // Private key of the local interface
remote_address, // Address of the endpoint peer.
public_key, // Public key of the endpoint peer.
remote_port)) { // Port pf the endpoint peer.
Serial.println("WG connected2");

      Serial.print("WireGuard IP: ");

Serial.println(local_ip.toString());
wg_connected = true;

    IPAddress ip (192,168,39,18);
    Serial.println("before ping 1");
    bool ret = Ping.ping(ip);
    Serial.println("after ping 1");
    if (ret)
        Serial.println("ping 1 ok");
    else
        Serial.println("ping 1 failed");
    IPAddress ip2 (10,6,0,1);
    if (Ping.ping(ip2))
        Serial.println("ping 2 ok");
    else
        Serial.println("ping 2 failed");
        
} else {
    Serial.println("WG connect failed");
    wg_connected = false;
}

}