void Awake()
{
SIPSorcery.LogFactory.Set(new UnityLoggerFactory());
_webRtcPeer = new WebRTCPeer();
}
async void OnConnectButtonClicked(object sender, EventArgs args)
{
logger.LogDebug($"Attempting to connection to web socket at {this._webSocketURL.Text}.");
var clientWebSocket = new ClientWebSocket();
if (!Uri.TryCreate(this._webSocketURL.Text, UriKind.Absolute, out var uri))
{
this._status.Text = "Invalid web socket URI.";
}
else
{
this._connectButton.IsVisible = false;
this._closeButton.IsVisible = true;
this._status.Text = "Attempting to connect to web socket server.";
await clientWebSocket.ConnectAsync(uri, CancellationToken.None);
var buffer = WebSocket.CreateClientBuffer(8192, 8192);
int attempts = 0;
while (true && attempts < 10)
{
WebSocketReceiveResult response = await clientWebSocket.ReceiveAsync(buffer, CancellationToken.None);
if (response.EndOfMessage)
{
_peer = new WebRTCPeer("peer1", DATA_CHANNEL_LABEL);
_peer.PeerConnection.oniceconnectionstatechange += (state) => Device.BeginInvokeOnMainThread(() => this._status.Text = $"ICE connection state {state}.");
_peer.PeerConnection.onconnectionstatechange += (state) => Device.BeginInvokeOnMainThread(() => this._status.Text = $"Peer connection state {state}.");
_peer.OnDataChannelMessage += (msg_) => Device.BeginInvokeOnMainThread(() => this._dataChannelMessages.Text += $"\n{msg_}");
var options = new JsonSerializerOptions();
options.Converters.Add(new JsonStringEnumConverter());
var init = JsonSerializer.Deserialize <RTCSessionDescriptionInit>(buffer.Take(response.Count).ToArray(), options);
_peer.PeerConnection.setRemoteDescription(init);
var answer = _peer.PeerConnection.createAnswer(null);
await _peer.PeerConnection.setLocalDescription(answer);
var answerJson = JsonSerializer.Serialize <RTCSessionDescriptionInit>(answer, options);
await clientWebSocket.SendAsync(
new ArraySegment <byte>(System.Text.Encoding.UTF8.GetBytes(answerJson)),
WebSocketMessageType.Text, true, CancellationToken.None);
attempts = 10;
while (_peer.PeerConnection.connectionState == RTCPeerConnectionState.connecting && attempts < 10)
{
await Task.Delay(1000);
attempts++;
}
break;
}
else
{
logger.LogWarning("Failed to get full web socket message from server.");
this._status.Text = "Web socket message exchange failed.";
}
attempts++;
}
}
}
async void OnConnectButtonClicked(object sender, EventArgs args)
{
logger.LogDebug($"Attempting to connection to web socket at {this._webSocketURL.Text}.");
if (!Uri.TryCreate(this._webSocketURL.Text, UriKind.Absolute, out var uri))
{
this._status.Text = "Invalid web socket URI.";
}
else
{
this._connectButton.IsVisible = false;
this._closeButton.IsVisible = true;
this._status.Text = "Attempting to connect to web socket server.";
try
{
_peer = new WebRTCPeer("peer1", DATA_CHANNEL_LABEL, uri);
await _peer.Connect(CancellationToken.None);
if (_peer.PeerConnection.connectionState == RTCPeerConnectionState.connected)
{
_isWebRTCConnected = true;
this._status.Text = "WebRTC peer connection successfully established.";
_peer.PeerConnection.onconnectionstatechange += (state) => Device.BeginInvokeOnMainThread(() => this._status.Text = $"Peer connection state {state}.");
}
else
{
this._status.Text = "Web socket connection successful, WebRTC peer connecting...";
_peer.PeerConnection.onconnectionstatechange += (connState) =>
{
if (_peer.PeerConnection.connectionState == RTCPeerConnectionState.connected)
{
if (!_isWebRTCConnected)
{
_isWebRTCConnected = true;
this.Dispatcher.BeginInvokeOnMainThread(() => this._status.Text = "WebRTC peer connection successfully established.");
_peer.PeerConnection.onconnectionstatechange += (state) => Device.BeginInvokeOnMainThread(() => this._status.Text = $"Peer connection state {state}.");
_peer.OnDataChannelMessage += (msg_) => Device.BeginInvokeOnMainThread(() => this._dataChannelMessages.Text += $"\n{msg_}");
}
}
else if (_peer.PeerConnection.connectionState == RTCPeerConnectionState.failed ||
_peer.PeerConnection.connectionState == RTCPeerConnectionState.closed)
{
this.Dispatcher.BeginInvokeOnMainThread(() => this._status.Text = $"WebRTC peer connection attempt failed in state {_peer.PeerConnection.connectionState}.");
}
};
}
}
catch (Exception excp)
{
this._status.Text = $"Error connecting. {excp.Message}";
this._closeButton.IsVisible = false;
this._connectButton.IsVisible = true;
}
}
}
