// As Client
private bool isValidResponse(ResponseHandshake response, out string message)
{
if (!response.IsWebSocketResponse)
{
message = "Invalid WebSocket response.";
return(false);
}
if (!response.HeaderExists("Sec-WebSocket-Accept", createResponseKey()))
{
message = "Invalid Sec-WebSocket-Accept.";
return(false);
}
if (response.HeaderExists("Sec-WebSocket-Version") &&
!response.HeaderExists("Sec-WebSocket-Version", _version))
{
message = "Unsupported Sec-WebSocket-Version.";
return(false);
}
if (response.HeaderExists("Sec-WebSocket-Protocol"))
{
_protocol = response.Headers["Sec-WebSocket-Protocol"];
}
if (response.HeaderExists("Sec-WebSocket-Extensions"))
{
_extensions = response.Headers["Sec-WebSocket-Extensions"];
}
message = String.Empty;
return(true);
}
// As Client
private bool receiveResponseHandshake()
{
var res = ResponseHandshake.Parse(readHandshake());
#if DEBUG
Console.WriteLine("WS: Info@receiveResponseHandshake: Response handshake from server:\n");
Console.WriteLine(res.ToString());
#endif
if (!checkResponseIsValid(res))
{
var msg = "Invalid response to the WebSocket connection request.";
onError(msg);
close(CloseStatusCode.ABNORMAL, msg);
return(false);
}
if (res.HeaderExists("Sec-WebSocket-Protocol"))
{
_protocol = res.Headers["Sec-WebSocket-Protocol"];
}
if (res.HeaderExists("Sec-WebSocket-Extensions"))
{
_extensions = res.Headers["Sec-WebSocket-Extensions"];
}
return(true);
}
public static ResponseHandshake CreateCloseResponse(HttpStatusCode code)
{
var res = new ResponseHandshake(code);
res.AddHeader("Connection", "close");
return(res);
}
// As Server
private ResponseHandshake createResponseHandshake(HttpStatusCode code)
{
var res = ResponseHandshake.CreateCloseResponse(code);
res.AddHeader("Sec-WebSocket-Version", _version);
return(res);
}
// As Server
private ResponseHandshake createResponseHandshake()
{
var res = new ResponseHandshake();
res.AddHeader("Sec-WebSocket-Accept", createResponseKey());
return(res);
}
// As Server
private void sendResponseHandshake(ResponseHandshake response)
{
#if DEBUG
Console.WriteLine("WS: Info@sendResponseHandshake: Response handshake from server:\n");
Console.WriteLine(response.ToString());
#endif
writeHandshake(response);
}
// As Client
private bool checkResponseIsValid(ResponseHandshake response)
{
return(!response.IsWebSocketResponse
? false
: !response.HeaderExists("Sec-WebSocket-Accept", createResponseKey())
? false
: !response.HeaderExists("Sec-WebSocket-Version") || response.HeaderExists("Sec-WebSocket-Version", _version));
}
// As server
private void send(ResponseHandshake response)
{
#if DEBUG
Console.WriteLine("WS: Info@send: Response handshake to client:\n");
Console.WriteLine(response.ToString());
#endif
_wsStream.Write(response);
}
// As Client
private ResponseHandshake receiveResponseHandshake()
{
var res = ResponseHandshake.Parse(readHandshake());
#if DEBUG
Console.WriteLine("WS: Info@receiveResponseHandshake: Response handshake from server:\n");
Console.WriteLine(res.ToString());
#endif
return(res);
}
// As server
private ResponseHandshake createResponseHandshake()
{
var res = new ResponseHandshake();
res.AddHeader("Sec-WebSocket-Accept", createResponseKey());
if (_cookies.Count > 0)
{
res.SetCookies(_cookies);
}
return(res);
}
// As server
private ResponseHandshake createResponseHandshake()
{
var res = new ResponseHandshake();
res.AddHeader("Sec-WebSocket-Accept", createResponseKey());
if (_extensions.Length > 0)
res.AddHeader("Sec-WebSocket-Extensions", _extensions);
if (_cookies.Count > 0)
res.SetCookies(_cookies);
return res;
}
// As server
private void send(ResponseHandshake response)
{
#if DEBUG
Console.WriteLine("WS: Info@send: Response handshake to client:\n");
Console.WriteLine(response.ToString());
#endif
_wsStream.WriteHandshake(response);
}
// As client
private bool processResponseHandshake(ResponseHandshake response)
{
var error = response.IsUnauthorized
? String.Format("An HTTP {0} authorization is required.", response.AuthChallenge.Scheme)
: !isValidResponseHandshake(response)
? "Invalid response to this WebSocket connection request."
: String.Empty;
if (error.Length > 0)
{
onError(error);
Close(CloseStatusCode.ABNORMAL, error);
return false;
}
processResponseProtocol(response.Headers["Sec-WebSocket-Protocol"]);
processResponseExtensions(response.Headers["Sec-WebSocket-Extensions"]);
processResponseCookies(response.Cookies);
return true;
}
// As client
private bool isValidResponseHandshake(ResponseHandshake response)
{
return !response.IsWebSocketResponse
? false
: !response.ContainsHeader("Sec-WebSocket-Accept", createResponseKey())
? false
: !response.ContainsHeader("Sec-WebSocket-Version") ||
response.ContainsHeader("Sec-WebSocket-Version", _version);
}
// As Server
private void sendResponseHandshake(ResponseHandshake response)
{
#if DEBUG
Console.WriteLine("WS: Info@sendResponseHandshake: Response handshake from server:\n");
Console.WriteLine(response.ToString());
#endif
writeHandshake(response);
}
// As Client
private bool isValidResponse(ResponseHandshake response, out string message)
{
if (!response.IsWebSocketResponse)
{
message = "Invalid WebSocket response.";
return false;
}
if (!response.HeaderExists("Sec-WebSocket-Accept", createResponseKey()))
{
message = "Invalid Sec-WebSocket-Accept.";
return false;
}
if (response.HeaderExists("Sec-WebSocket-Version") &&
!response.HeaderExists("Sec-WebSocket-Version", _version))
{
message = "Unsupported Sec-WebSocket-Version.";
return false;
}
if (response.HeaderExists("Sec-WebSocket-Protocol"))
_protocol = response.Headers["Sec-WebSocket-Protocol"];
if (response.HeaderExists("Sec-WebSocket-Extensions"))
_extensions = response.Headers["Sec-WebSocket-Extensions"];
message = String.Empty;
return true;
}
// As Server
private ResponseHandshake createResponseHandshake()
{
var res = new ResponseHandshake();
res.AddHeader("Sec-WebSocket-Accept", createResponseKey());
return res;
}
public static ResponseHandshake CreateCloseResponse(HttpStatusCode code)
{
var res = new ResponseHandshake(code);
res.AddHeader("Connection", "close");
return res;
}
// As Client
private bool checkResponseIsValid(ResponseHandshake response)
{
return !response.IsWebSocketResponse
? false
: !response.HeaderExists("Sec-WebSocket-Accept", createResponseKey())
? false
: !response.HeaderExists("Sec-WebSocket-Version") || response.HeaderExists("Sec-WebSocket-Version", _version);
}
