This is a webrtc echo server. It sends all incoming packages back to the sender without changing them. It implements ICE and DTLS-SRTP, makes some minor changes to SDP, and relies on the ability of the peer to understand itself for the rest of the WebRTC stack.
Signaling is done through palava.tv, but can be easily replaced with any other signaling server.
The project uses libsrtp, OpenSSL, and libnice. The business logic is written in coffeescript, which also offers an HTTP interface to invite an echo instance into a room, and a test page.
You need the following native libraries and their headers:
- libnice (>=1.4)
- OpenSSL
- libsrtp
To compile the native bindings and install the node dependencies run
npm install
The requires a certificate and a key file for the DTLS handshake. The certificate does not have to be signed. You can configure the path to those files with
export CERT_FILE=cert.pem
export KEY_FILE=key.pem
The values in the example are also the default values.
To start the server run
coffee src/main.coffee
You can now either visit the test page on
http://localhost:3000/
or invite the echo bot into any palava room with a post request to
http://localhost:3000/invite.json
passing the desired room as the room value.