private void SendNegotiationResponse(WebSocketHandshake handshake, StreamWriter writer)
{
writer.Write("HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\n");
if (handshake.Response.Cookies.Count > 0)
{
foreach (var cookie in handshake.Response.Cookies)
{
writer.Write("Set-Cookie: ");
writer.Write(cookie.ToString());
writer.Write("\r\n");
}
}
writer.Write("Sec-WebSocket-Accept: ");
writer.Write(handshake.GenerateHandshake());
if (handshake.Request.Headers.HeaderNames.Contains(WebSocketHeaders.Protocol))
{
writer.Write("\r\nSec-WebSocket-Protocol: ");
writer.Write(handshake.Response.WebSocketProtocol);
}
WriteHandshakeCookies(handshake, writer);
writer.Write("\r\n\r\n");
}
private void SendNegotiationResponse(WebSocketHandshake handshake, StreamWriter writer)
{
writer.Write("HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\n");
if (handshake.Response.Cookies.Count > 0)
{
foreach (var cookie in handshake.Response.Cookies)
{
writer.Write("Set-Cookie: ");
writer.Write(cookie.ToString());
writer.Write("\r\n");
}
}
writer.Write("Sec-WebSocket-Accept: ");
writer.Write(handshake.GenerateHandshake());
// https://tools.ietf.org/html/rfc6455#section-4.2.2
/*
* Sec-WebSocket-Protocol
* If the client's handshake did not contain such a header field or if
* the server does not agree to any of the client's requested
* subprotocols, the only acceptable value is null. The absence
* of such a field is equivalent to the null value (meaning that
* if the server does not wish to agree to one of the suggested
* subprotocols, it MUST NOT send back a |Sec-WebSocket-Protocol|
* header field in its response).
*/
if (handshake.Response.WebSocketProtocol != null)
{
writer.Write("\r\nSec-WebSocket-Protocol: ");
writer.Write(handshake.Response.WebSocketProtocol);
}
WriteHandshakeCookies(handshake, writer);
writer.Write("\r\n\r\n");
}
private void SendNegotiationResponse(WebSocketHandshake handshake, StreamWriter writer)
{
writer.Write("HTTP/1.1 101 Switching Protocols\r\n");
writer.Write("Upgrade: websocket\r\n");
writer.Write("Connection: Upgrade\r\n");
writer.Write("Sec-WebSocket-Accept: ");
writer.Write(handshake.GenerateHandshake());
if (handshake.Request.Headers.AllKeys.Contains("Sec-WebSocket-Protocol"))
{
writer.Write("\r\n");
writer.Write("Sec-WebSocket-Protocol: ");
writer.Write(handshake.Request.WebSocketProtocol);
}
if (handshake.ResponseExtensions.Any())
{
Boolean firstExt=true, firstOpt=true;
writer.Write("\r\n");
writer.Write("Sec-WebSocket-Extensions: ");
foreach (var extension in handshake.ResponseExtensions)
{
if(!firstExt)
writer.Write(",");
writer.Write(extension.Name);
var serverAcceptedOptions = extension.Options.Where(x => !x.ClientAvailableOption);
if(extension.Options.Any())
{
writer.Write(";");
foreach (var extOption in serverAcceptedOptions)
{
if(!firstOpt)
writer.Write(";");
writer.Write(extOption.Name);
if (extOption.Value != null)
{
writer.Write("=");
writer.Write(extOption.Value);
}
firstOpt = false;
}
firstExt = false;
}
}
}
writer.Write("\r\n");
writer.Write("\r\n");
}
private void SendNegotiationResponse(WebSocketHandshake handshake, StreamWriter writer)
{
writer.Write("HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\n");
if (handshake.Response.Cookies.Count > 0)
{
foreach (var cookie in handshake.Response.Cookies)
{
writer.Write("Set-Cookie: ");
writer.Write(cookie.ToString());
writer.Write("\r\n");
}
}
writer.Write("Sec-WebSocket-Accept: ");
writer.Write(handshake.GenerateHandshake());
if (handshake.Request.Headers.HeaderNames.Contains("Sec-WebSocket-Protocol"))
{
writer.Write("\r\nSec-WebSocket-Protocol: ");
writer.Write(handshake.Response.WebSocketProtocol);
}
WriteHandshakeCookies(handshake, writer);
writer.Write("\r\n\r\n");
}
private void SendNegotiationResponse(WebSocketHandshake handshake, StreamWriter writer)
{
writer.Write("HTTP/1.1 101 Switching Protocols\r\n");
writer.Write("Upgrade: websocket\r\n");
writer.Write("Connection: Upgrade\r\n");
if (handshake.Response.Cookies.Count > 0)
{
foreach (var cookie in handshake.Response.Cookies)
{
writer.Write("Set-Cookie: ");
writer.Write(cookie.ToString());
writer.Write("\r\n");
}
}
writer.Write("Sec-WebSocket-Accept: ");
writer.Write(handshake.GenerateHandshake());
if (handshake.Request.Headers.AllKeys.Contains("Sec-WebSocket-Protocol"))
{
writer.Write("\r\n");
writer.Write("Sec-WebSocket-Protocol: ");
writer.Write(handshake.Response.WebSocketProtocol);
}
if (handshake.Response.WebSocketExtensions.Any())
{
Boolean firstExt = true, firstOpt = true;
writer.Write("\r\n");
writer.Write("Sec-WebSocket-Extensions: ");
foreach (var extension in handshake.Response.WebSocketExtensions)
{
if (!firstExt)
{
writer.Write(",");
}
writer.Write(extension.Name);
var serverAcceptedOptions = extension.Options.Where(x => !x.ClientAvailableOption);
if (extension.Options.Any())
{
writer.Write(";");
foreach (var extOption in serverAcceptedOptions)
{
if (!firstOpt)
{
writer.Write(";");
}
writer.Write(extOption.Name);
if (extOption.Value != null)
{
writer.Write("=");
writer.Write(extOption.Value);
}
firstOpt = false;
}
firstExt = false;
}
}
}
writer.Write("\r\n");
writer.Write("\r\n");
}
private void SendNegotiationResponse(WebSocketHandshake handshake, StreamWriter writer)
{
writer.Write("HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\n");
if (handshake.Response.Cookies.Count > 0)
{
foreach (var cookie in handshake.Response.Cookies)
{
writer.Write("Set-Cookie: ");
writer.Write(cookie.ToString());
writer.Write("\r\n");
}
}
writer.Write("Sec-WebSocket-Accept: ");
writer.Write(handshake.GenerateHandshake());
// https://tools.ietf.org/html/rfc6455#section-4.2.2
/*
Sec-WebSocket-Protocol
If the client's handshake did not contain such a header field or if
the server does not agree to any of the client's requested
subprotocols, the only acceptable value is null. The absence
of such a field is equivalent to the null value (meaning that
if the server does not wish to agree to one of the suggested
subprotocols, it MUST NOT send back a |Sec-WebSocket-Protocol|
header field in its response).
*/
if (handshake.Response.WebSocketProtocol != null)
{
writer.Write("\r\nSec-WebSocket-Protocol: ");
writer.Write(handshake.Response.WebSocketProtocol);
}
WriteHandshakeCookies(handshake, writer);
writer.Write("\r\n\r\n");
}
