|
public static CreateFromConnectedStream ( |
||
| stream | The connected Stream. | |
| isServer | bool | true if this is the server-side of the connection; false if this is the client-side of the connection. |
| subprotocol | string | The agreed upon subprotocol for the connection. |
| keepAliveInterval | TimeSpan | The interval to use for keep-alive pings. |
| receiveBufferSize | int | The buffer size to use for received data. |
| receiveBuffer | ArraySegment |
Optional buffer to use for receives. |
| return | ||
public static WebSocket CreateFromStream(
Stream stream,
bool isServer,
string?subProtocol,
TimeSpan keepAliveInterval)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (!stream.CanRead || !stream.CanWrite)
{
throw new ArgumentException(!stream.CanRead ? SR.NotReadableStream : SR.NotWriteableStream, nameof(stream));
}
if (subProtocol != null)
{
WebSocketValidate.ValidateSubprotocol(subProtocol);
}
if (keepAliveInterval != Timeout.InfiniteTimeSpan && keepAliveInterval < TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException(nameof(keepAliveInterval), keepAliveInterval,
SR.Format(SR.net_WebSockets_ArgumentOutOfRange_TooSmall,
0));
}
return(ManagedWebSocket.CreateFromConnectedStream(stream, isServer, subProtocol, keepAliveInterval));
}
public static WebSocket CreateClientWebSocket(Stream innerStream,
string subProtocol, int receiveBufferSize, int sendBufferSize,
TimeSpan keepAliveInterval, bool useZeroMaskingKey, ArraySegment <byte> internalBuffer)
{
if (innerStream == null)
{
throw new ArgumentNullException(nameof(innerStream));
}
if (!innerStream.CanRead || !innerStream.CanWrite)
{
throw new ArgumentException(!innerStream.CanRead ? SR.NotReadableStream : SR.NotWriteableStream, nameof(innerStream));
}
if (subProtocol != null)
{
WebSocketValidate.ValidateSubprotocol(subProtocol);
}
if (keepAliveInterval != Timeout.InfiniteTimeSpan && keepAliveInterval < TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException(nameof(keepAliveInterval), keepAliveInterval,
SR.Format(SR.net_WebSockets_ArgumentOutOfRange_TooSmall,
0));
}
if (receiveBufferSize <= 0 || sendBufferSize <= 0)
{
throw new ArgumentOutOfRangeException(
receiveBufferSize <= 0 ? nameof(receiveBufferSize) : nameof(sendBufferSize),
receiveBufferSize <= 0 ? receiveBufferSize : sendBufferSize,
SR.Format(SR.net_WebSockets_ArgumentOutOfRange_TooSmall, 0));
}
Memory <byte> internalMemoryBuffer =
internalBuffer.Count >= receiveBufferSize ? internalBuffer :
receiveBufferSize >= ManagedWebSocket.MaxMessageHeaderLength ? new byte[receiveBufferSize] :
Memory <byte> .Empty; // let ManagedWebSocket create it
return(ManagedWebSocket.CreateFromConnectedStream(innerStream, false, subProtocol, keepAliveInterval, internalMemoryBuffer));
}
public static WebSocket CreateClientWebSocket(Stream innerStream,
string subProtocol, int receiveBufferSize, int sendBufferSize,
TimeSpan keepAliveInterval, bool useZeroMaskingKey, ArraySegment <byte> internalBuffer)
{
if (innerStream == null)
{
throw new ArgumentNullException(nameof(innerStream));
}
if (!innerStream.CanRead || !innerStream.CanWrite)
{
throw new ArgumentException(!innerStream.CanRead ? SR.NotReadableStream : SR.NotWriteableStream, nameof(innerStream));
}
if (subProtocol != null)
{
WebSocketValidate.ValidateSubprotocol(subProtocol);
}
if (keepAliveInterval != Timeout.InfiniteTimeSpan && keepAliveInterval < TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException(nameof(keepAliveInterval), keepAliveInterval,
SR.Format(SR.net_WebSockets_ArgumentOutOfRange_TooSmall,
0));
}
if (receiveBufferSize <= 0 || sendBufferSize <= 0)
{
throw new ArgumentOutOfRangeException(
receiveBufferSize <= 0 ? nameof(receiveBufferSize) : nameof(sendBufferSize),
receiveBufferSize <= 0 ? receiveBufferSize : sendBufferSize,
SR.Format(SR.net_WebSockets_ArgumentOutOfRange_TooSmall, 0));
}
// Ignore useZeroMaskingKey. ManagedWebSocket doesn't currently support that debugging option.
// Ignore internalBuffer. ManagedWebSocket uses its own small buffer for headers/control messages.
return(ManagedWebSocket.CreateFromConnectedStream(innerStream, false, subProtocol, keepAliveInterval));
}
internal static async Task <HttpListenerWebSocketContext> AcceptWebSocketAsyncCore(HttpListenerContext context,
string subProtocol,
int receiveBufferSize,
TimeSpan keepAliveInterval,
ArraySegment <byte>?internalBuffer = null)
{
// get property will create a new response if one doesn't exist.
HttpListenerResponse response = context.Response;
HttpListenerRequest request = context.Request;
ValidateWebSocketHeaders(context);
string secWebSocketVersion = request.Headers[HttpKnownHeaderNames.SecWebSocketVersion];
// Optional for non-browser client
string origin = request.Headers[HttpKnownHeaderNames.Origin];
string[] secWebSocketProtocols = null;
string outgoingSecWebSocketProtocolString;
bool shouldSendSecWebSocketProtocolHeader =
ProcessWebSocketProtocolHeader(
request.Headers[HttpKnownHeaderNames.SecWebSocketProtocol],
subProtocol,
out outgoingSecWebSocketProtocolString);
if (shouldSendSecWebSocketProtocolHeader)
{
secWebSocketProtocols = new string[] { outgoingSecWebSocketProtocolString };
response.Headers.Add(HttpKnownHeaderNames.SecWebSocketProtocol, outgoingSecWebSocketProtocolString);
}
// negotiate the websocket key return value
string secWebSocketKey = request.Headers[HttpKnownHeaderNames.SecWebSocketKey];
string secWebSocketAccept = HttpWebSocket.GetSecWebSocketAcceptString(secWebSocketKey);
response.Headers.Add(HttpKnownHeaderNames.Connection, HttpKnownHeaderNames.Upgrade);
response.Headers.Add(HttpKnownHeaderNames.Upgrade, WebSocketUpgradeToken);
response.Headers.Add(HttpKnownHeaderNames.SecWebSocketAccept, secWebSocketAccept);
response.StatusCode = (int)HttpStatusCode.SwitchingProtocols; // HTTP 101
response.StatusDescription = HttpStatusDescription.Get(HttpStatusCode.SwitchingProtocols);
HttpResponseStream responseStream = response.OutputStream as HttpResponseStream;
// Send websocket handshake headers
await responseStream.WriteWebSocketHandshakeHeadersAsync().ConfigureAwait(false);
WebSocket webSocket = ManagedWebSocket.CreateFromConnectedStream(context.Connection.ConnectedStream, true, subProtocol, keepAliveInterval, receiveBufferSize, internalBuffer);
HttpListenerWebSocketContext webSocketContext = new HttpListenerWebSocketContext(
request.Url,
request.Headers,
request.Cookies,
context.User,
request.IsAuthenticated,
request.IsLocal,
request.IsSecureConnection,
origin,
secWebSocketProtocols != null ? secWebSocketProtocols : Array.Empty <string>(),
secWebSocketVersion,
secWebSocketKey,
webSocket);
return(webSocketContext);
}