static async Task Main(string[] args)
{
string videoCodec = FFMPEG_DEFAULT_CODEC;
if (args?.Length > 0)
{
switch (args[0].ToLower())
{
case FFMPEG_VP8_CODEC:
case FFMPEG_VP9_CODEC:
case FFMPEG_H264_CODEC:
videoCodec = args[0].ToLower();
break;
default:
Console.WriteLine($"Video codec option not recognised. Valid values are {FFMPEG_VP8_CODEC}, {FFMPEG_VP9_CODEC} and {FFMPEG_H264_CODEC}. Using {videoCodec}.");
break;
}
}
CancellationTokenSource exitCts = new CancellationTokenSource();
logger = AddConsoleLogger();
string ffmpegCommand = String.Format(FFMPEG_DEFAULT_COMMAND, videoCodec, FFMPEG_DEFAULT_RTP_PORT, FFMPEG_SDP_FILE);
// Start web socket.
Console.WriteLine("Starting web socket server...");
_webSocketServer = new WebSocketServer(IPAddress.Any, WEBSOCKET_PORT);
//_webSocketServer = new WebSocketServer(IPAddress.Any, WEBSOCKET_PORT, true);
//_webSocketServer.SslConfiguration.ServerCertificate = new X509Certificate2(LOCALHOST_CERTIFICATE_PATH);
//_webSocketServer.SslConfiguration.CheckCertificateRevocation = false;
//_webSocketServer.Log.Level = WebSocketSharp.LogLevel.Debug;
_webSocketServer.AddWebSocketService <WebRtcClient>("/", (client) =>
{
client.WebSocketOpened += SendOffer;
client.OnMessageReceived += WebSocketMessageReceived;
});
if (File.Exists(FFMPEG_SDP_FILE))
{
var sdp = SDP.ParseSDPDescription(File.ReadAllText(FFMPEG_SDP_FILE));
var videoAnn = sdp.Media.Single(x => x.Media == SDPMediaTypesEnum.video);
if (videoAnn.MediaFormats.Values.First().Name().ToLower() != videoCodec)
{
logger.LogWarning($"Removing existing ffmpeg SDP file {FFMPEG_SDP_FILE} due to codec mismatch.");
File.Delete(FFMPEG_SDP_FILE);
}
}
Console.WriteLine("Start ffmpeg using the command below and then initiate a WebRTC connection from the browser");
Console.WriteLine(ffmpegCommand);
if (!File.Exists(FFMPEG_SDP_FILE))
{
Console.WriteLine();
Console.WriteLine($"Waiting for {FFMPEG_SDP_FILE} to appear...");
}
await Task.Run(() => StartFfmpegListener(FFMPEG_SDP_FILE, exitCts.Token));
Console.WriteLine($"ffmpeg listener successfully created on port {FFMPEG_DEFAULT_RTP_PORT} with video format {_ffmpegVideoFormat.Name()}.");
_webSocketServer.Start();
Console.WriteLine();
Console.WriteLine($"Waiting for browser web socket connection to {_webSocketServer.Address}:{_webSocketServer.Port}...");
// Wait for a signal saying the call failed, was cancelled with ctrl-c or completed.
await Task.Run(() => OnKeyPress(exitCts.Token));
_webSocketServer.Stop();
}
