private string ValidateResponse(HttpWebRequest request, HttpWebResponse response)
{
if (response.StatusCode != HttpStatusCode.SwitchingProtocols)
{
throw new WebSocketException("net_WebSockets_Connect101Expected");
}
string text = response.Headers["Upgrade"];
if (!string.Equals(text, "websocket", StringComparison.OrdinalIgnoreCase))
{
throw new WebSocketException("net_WebSockets_InvalidResponseHeader");
}
string text2 = response.Headers["Connection"];
if (!string.Equals(text2, "Upgrade", StringComparison.OrdinalIgnoreCase))
{
throw new WebSocketException("net_WebSockets_InvalidResponseHeader");
}
string text3 = response.Headers["Sec-WebSocket-Accept"];
string secWebSocketAcceptString = ClientWebSocketOptions2.GetSecWebSocketAcceptString(request.Headers["Sec-WebSocket-Key"]);
if (!string.Equals(text3, secWebSocketAcceptString, StringComparison.OrdinalIgnoreCase))
{
throw new WebSocketException("net_WebSockets_InvalidResponseHeader");
}
string text4 = response.Headers["Sec-WebSocket-Protocol"];
if (!string.IsNullOrWhiteSpace(text4) && this.options.RequestedSubProtocols.Count > 0)
{
bool flag = false;
foreach (string current in this.options.RequestedSubProtocols)
{
if (string.Equals(current, text4, StringComparison.OrdinalIgnoreCase))
{
flag = true;
break;
}
}
if (!flag)
{
throw new WebSocketException("net_WebSockets_AcceptUnsupportedProtocol");
}
}
if (!string.IsNullOrWhiteSpace(text4))
{
return(text4);
}
return(null);
}
public CustomWebsocket()
{
this.state = 0;
this.options = new ClientWebSocketOptions2();
this.cts = new CancellationTokenSource();
}