/**
* 创建一个P2P连接
* @param {RemoteMedia}} remote 远程媒体
*/
public MediaConnection(RemoteMedia remote)
{
this.remote = remote;
var config = new RTCConfiguration();
foreach (var c in this.call.iceServers)
{
config.AddServer(c.urls, c.username, c.credential);
}
this.connection = RtcNavigator.createPeerConnection(config);
//当需要发送candidate的时候
this.connection.IceCandidate += evt =>
{
this.socket.send(new
{
kind = "webrtc",
action = "candidate",
to = this.remote.id,
candidate = new
{
candidate = evt.Sdp,
sdpMid = evt.SdpMid,
sdpMLineIndex = evt.SdpMLineIndex
}
});
};
//如果支持新的api，当收到track
this.connection.TrackAdded += evt =>
{
this._tracks[evt.Track.Kind] = evt.Track;
this._emitAddTrack();
};
//当媒体流被移除时
this.connection.TrackRemoved += evt =>
{
this._tracks.Remove(evt.Track.Kind);
this._emitAddTrack();
};
//当连接状态发生改变时
this.connection.IceConnectionChange += state =>
{
this.iceConnectionState = state;
//new, checking, connected, completed, failed, disconnected, closed;
switch (state)
{
case IceConnectionState.Connected:
case IceConnectionState.Completed:
case IceConnectionState.Failed:
case IceConnectionState.Disconnected:
case IceConnectionState.Closed:
if (this._candidates == null || this._candidates.Count > 0)
{
this._candidates = new List <IceCandidate>();
}
break;
}
var name = GetIceConnectionName(state);
this.StateChanged?.Invoke(name);
this._clearchecker();
};
this.connection.DataChannel += channel =>
{
this._registerDataChannel(channel);
};
//检查超时
this._timer = Timeout.setTimeout(this._timeoutchecker, 10000);
//初始化状态
this.resetState(true);
}