Defold webrtc extension

About

A quick and easy library that adds support for webrtc to Defold. It makes use of paullouisageneau's libdatachannel library.

The wasm version is based off of datachannel-wasm

Right now, it only works on WASM and Windows, but theoretically it should work on more platforms if the right binaries are compiled and linked.

Setup

To install the library just add it to the dependencies list on your project. Currently there aren't any stable releases, the library is still under a heavy phase of development.

Usage

When you build the web version, it will be served at http://localhost:43763/html5/index.html as long as defold is open

The library already features a lua documentation, in the examples folder there is also a small test that uses the defold websocket extension.

Here's a small overview of the extension:

function webrtc_callback(self, event, data)
    if event == webrtc.EVENT_CHANNEL_OPENED then
        print("Data channel \'" .. data.label .. "\' with " .. data.id .. " created!")
        webrtc.send_message(id, label, "Hello!")
    
    elseif event == webrtc.EVENT_CHANNEL_CLOSED then
        print("Data channel \'" .. data.label .. "\' with " .. data.id .. " closed!")
    
    elseif event == webrtc.EVENT_SIGNALING_DATA then
        server.send(data.signaling)
    
    elseif event == webrtc.EVENT_MESSAGE then
        print("[" .. data.id .. "] Got message from \'" .. data.label .. "\':" .. data.msg)
    end
end

function on_server_message(self, message)
    webrtc.process_data(message)
end

function init()
    webrtc.set_configuration("stun_url:PORT;turn_url:PORT:USER:PASSWORD", webrtc_callback)
    -- If we're the offerer, create a channel with another peer.
    webrtc.create_channel(peer_id, "my_channel_name", webrtc.TYPE_RELIABLE)
end