.Net Framework support about socket.io-client-csharp

[doghappy]

Good idea, there is only one problem that needs to be solved: how to use WebSocket client on .Net Fx 4+?

The current project uses System.Net.Websockets.Client.dll as the ws client, which supports .NET Standard 1.3+ (.NET Fx 4.6+). Therefore, we only need to find alternatives and implement the IWebSocketClient interface.

It's worth noting that if we don't install System.Net.Websocket.Client from NuGet, we can also import the namespace, but it belongs to System.dll, running on Windows 7, will throw a PlatformNotSupportedException

Some of the classes and class elements in the System.Net.WebSockets namespace are supported on Windows 7, Windows Vista SP2, and Windows Server 2008. However, the only public implementations of client and server WebSockets are supported on Windows 8 and Windows Server 2012. The class elements in the System.Net.WebSockets namespace that are supported on Windows 7, Windows Vista SP2, and Windows Server 2008 are abstract class elements. This allows an application developer to inherit and extend these abstract class classes and class elements with an actual implementation of client WebSockets.

[doghappy]

I tried it and it seems difficult to support .NET Fx 4.5.2 and below, The following implementation is missing:

• Task.CompletedTask
• Task.Delay()

Different delegate signatures:

.NET Framework 4.0:

public delegate void EventHandler<TEventArgs>(object sender, TEventArgs e) where TEventArgs : EventArgs;

.NET Standard 2.0:

public delegate void EventHandler<TEventArgs>(object sender, TEventArgs e);

This may have to change the code of the SocketIO.cs

[mathrb]

I agree that it does not work with .NET Framework 4.0, but it works like a charm on .NET Framework 4.5 (Currently I've tested win 10 only)

[mathrb]

NuGet does not provide a way to target a specific OS version.
I think providing a .Net Fx 4.5+ can still benefit people. Even websocket-sharp does not support windows 7 (sta/websocket-sharp#572). This would require a proper documentation.

[doghappy]

https://github.com/doghappy/socket.io-client-csharp/tree/feat-netfx4.5

In this branch, I added some code that may be useful to you

[mathrb]

Works fine on my side. Though it would require a -pre release since websocketsharp version is 1.0.3-rc11

[mathrb]

How could I help accelerate the publication to NuGet?

[doghappy]

Install-Package SocketIOClient.NetFx -Version 1.0.0-alpha3

[mathrb]

Hello,

Made a few test with the NetFx version. I'm concerned about reconnexion with Websocketsharp. I doesn't work as expected. Using the ClientWebSocket of the framework, it works correctly.

[doghappy]

If your TargetFramework is .NET Framework and it runs on Windows7/Windows Server 2008 R2, please install

Otherwise, we recommend you to install