Can't setup RawSocket in .net core runtime.

[jandykwan]

Describe the bug
A clear and concise description of what the bug is.
Can't setup RawSocket in .net core 2.2 while the same code in .net 4.7.2 is OK.
To Reproduce
Add a complete standalone code that reproduces the issue. Preferably upload it as a Gist to [GitHub Gist]
var host = new WampHost();
var transport = new RawSocketTransport(System.Net.Sockets.TcpListener.Create(9898));
host.RegisterTransport(transport, new JTokenMsgpackBinding());
Additionally, what steps should be done in order to reproduce the issue.

For example:

1. Run host
2. Run client, client can't receive any message back.
3. I use the tcp tool to debug. the client has sent the right the packet, but server no response.

Vague bug reports with poorly formatted code snippets and/or non-standalone code snippets, will be automatically closed!

.NET platform variant
Specify your .NET platform variant. This includes your operating system version.
.NET Core 2.2 on Windows 10

[darkl]

The problem is with the call memoryStream.GetBuffer() which throws an exception on .NET Core 2.2.

I tried a couple of times already to avoid allocating byte arrays for the RawSocket implementation using ArrayPool and RecyclableMemoryStreamManager (Microsoft.IO.RecyclableMemoryStream), but it seems that I never find a solution that works. Do you happen to know of a framework that recycles byte arrays? Its input should be a size of an array, and it should return an array at least of that size. It should also allow returning byte arrays that are no longer used.

Thanks
Elad

[darkl]

Found an issue and a workaround here.

Releasing a new version to NuGet soon.

[darkl]

Version 19.1.1 is available on NuGet gallery, with a fix for this issue.

[jandykwan]

just saw . really thanks for your fast response.