internal static HttpResponse CreateWebSocketResponse ()
{
var res = new HttpResponse (HttpStatusCode.SwitchingProtocols);
var headers = res.Headers;
headers["Upgrade"] = "websocket";
headers["Connection"] = "Upgrade";
return res;
}
internal static HttpResponse CreateUnauthorizedResponse (string challenge)
{
var res = new HttpResponse (HttpStatusCode.Unauthorized);
res.Headers["WWW-Authenticate"] = challenge;
return res;
}
internal static HttpResponse CreateCloseResponse (HttpStatusCode code)
{
var res = new HttpResponse (code);
res.Headers["Connection"] = "close";
return res;
}
// As client
private string checkIfValidHandshakeResponse (HttpResponse response)
{
var headers = response.Headers;
return response.IsRedirect
? "Indicates the redirection."
: response.IsUnauthorized
? "Requires the authentication."
: !response.IsWebSocketResponse
? "Not a WebSocket connection response."
: !validateSecWebSocketAcceptHeader (headers["Sec-WebSocket-Accept"])
? "Includes an invalid Sec-WebSocket-Accept header."
: !validateSecWebSocketProtocolHeader (headers["Sec-WebSocket-Protocol"])
? "Includes an invalid Sec-WebSocket-Protocol header."
: !validateSecWebSocketExtensionsHeader (headers["Sec-WebSocket-Extensions"])
? "Includes an invalid Sec-WebSocket-Extensions header."
: !validateSecWebSocketVersionServerHeader (headers["Sec-WebSocket-Version"])
? "Includes an invalid Sec-WebSocket-Version header."
: null;
}
// As server
internal void Close (HttpResponse response)
{
_readyState = WebSocketState.Closing;
sendHttpResponse (response);
releaseServerResources ();
_readyState = WebSocketState.Closed;
}
// As server
private bool sendHttpResponse (HttpResponse response)
{
_logger.Debug ("A response to this request:\n" + response.ToString ());
return sendBytes (response.ToByteArray ());
}