public async Task ConnectAsync(string url)
{
Uri uri = new Uri(url);
string query = uri.PathAndQuery;
bool ssl = uri.Scheme.ToLower().StartsWith("wss");
int port = uri.Port > 0 ? uri.Port : (ssl ? 443 : 80);
await client.ConnectAsync(uri.Host, port);
ConnectionStream stream = new ConnectionStream(ref client, ssl);
if (ssl)
{
await stream.Authenticate(ConnectionStream.AuthMode.Client, uri.Host);
}
if (!(await Handshake(stream, uri, port)))
{
state = WebsockState.Closed;
throw new Exception("Failed connection at handshake");
}
protocol = new WebsockProtocol(ref stream);
state = WebsockState.Open;
try {
while (true)
{
await OnMessage(await protocol.GetMessage());
}
} catch (WebsockCloseException ex) {
await OnClose(ex.Code, ex.Reason);
} finally {
protocol.Dispose();
}
}
private async Task <bool> Handshake(ConnectionStream stream, Uri uri, int port)
{
state = WebsockState.Connecting;
string handshakeData = HttpHandshakeData
.Replace("{Path}", uri.PathAndQuery)
.Replace("{Host}", uri.Host)
.Replace("{Scheme}", uri.Scheme)
.Replace("{Port}", port.ToString())
.Replace("{Key}", GenerateKey());
await stream.WriteAsync(handshakeData);
string response = Encoding.UTF8.GetString(await stream.ReadAsync());
return(response.Split('\n')[0].Split(' ')[1] == "101");
}
public WebsockClient()
{
isConnected = false;
client = new System.Net.Sockets.TcpClient();
state = WebsockState.Closed;
}