System.Net.WebSockets.WebSocketProtocol 5.1.3 (original) (raw)

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About

Provides the WebSocketProtocol class, which allows creating a WebSocket from a connected stream using WebSocketsProtocol.CreateFromConnectedStream.

NOTE: This package was designed as a temporary solution for internal use (building ASP.NET targeting .NET Standard 2.0), and is now considered obsolete. If targeting .NET Standard 2.1 or .NET 5+, use WebSocket.CreateFromStream instead.

Key Features

• Creates a new WebSocket instance that operates on the specified transport stream. The WebSocket class allows applications to send and receive data after the WebSocket upgrade has completed.
• The API can be used to create both client-side and server-side WebSocket instances.

How to Use

To create a WebSocket using WebSocketProtocol, as a prerequisite, you need to prepare the opaque transport stream for the WebSocket, for example, create or accept a TCP socket connection as a Stream and perform a WebSocket opening handshake (upgrade) over it. Then you can use the transport stream and the negotiated subprotocol to call WebSocketProtocol.CreateFromStream.

Stream opaqueTransport = /* ... */; // complete WebSocket opening handshake over the transport connection
WebSocket ws = WebSocketProtocol.CreateFromStream(opaqueTransport, isServer: true, subProtocol, keepAliveInterval);

The API is considered obsolete and is not recommented for use.

On .NET Framework or .NET Standard 2.0:

• To create a client WebSocket from a stream, use WebSocket.CreateClientWebSocket.
  • Alternatively, consider using a ClientWebSocket class.
• Creating a server WebSocket from a stream is not available on the API surface, consider using HttpListener or ASP.NET HttpContext to accept server WebSocket connections.
  • HttpListenerContext.AcceptWebSocketAsync
  • HttpContext.AcceptWebSocketRequest

On .NET Core 2.1+, .NET 5+ or .NET Standard 2.1:

• To create a client or server WebSocket from a stream, use WebSocket.CreateFromStream

Main Types

The main types provided by this library are:

• System.Net.WebSockets.WebSocketProtocol

Additional Documentation

• API reference can be found in: https://learn.microsoft.com/en-us/dotnet/api/system.net.websockets.websocketprotocol
• Additional APIs mentioned:
  • WebSocket static methods: https://learn.microsoft.com/en-us/dotnet/api/system.net.websockets.websocket
  • ClientWebSocket: https://learn.microsoft.com/en-us/dotnet/api/system.net.websockets.clientwebsocket
  • HttpListener context: https://learn.microsoft.com/en-us/dotnet/api/system.net.httplistenercontext
  • ASP.NET HttpContext: https://learn.microsoft.com/en-us/dotnet/api/system.web.httpcontext

License

System.Net.WebSockets.WebSocketProtocol is released as open source under the MIT license.

• .NETFramework 4.6.2

  • System.Buffers (>= 4.6.1)
  • System.Memory (>= 4.6.3)
  • System.Numerics.Vectors (>= 4.6.1)
  • System.Runtime.CompilerServices.Unsafe (>= 6.1.2)
  • System.Threading.Tasks.Extensions (>= 4.6.3)

• .NETStandard 2.0

  • System.Buffers (>= 4.6.1)
  • System.Memory (>= 4.6.3)
  • System.Numerics.Vectors (>= 4.6.1)
  • System.Runtime.CompilerServices.Unsafe (>= 6.1.2)
  • System.Threading.Tasks.Extensions (>= 4.6.3)

• net6.0

  • No dependencies.

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