My Socket problems ?

1. Nugget WebSocket#

- https://stackoverflow.com/questions/30523478/connecting-to-websocket-using-c-sharp-i-can-connect-using-javascript-but-c-sha

- Library websocket from nugget :  https://www.nuget.org/packages/websocket-sharp.clone/3.0.0

- Install and Use a NuGet Package with Visual Studio - https://channel9.msdn.com/Series/NuGet-101/Install-and-Use-a-NuGet-Package-with-Visual-Studio-2-of-5

2. Mozilla 

Writing WebSocket client applications

- https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_client_applications

Writing a WebSocket server in C#

- https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_server

3. Sending WebSocket message over C# Socket

- https://stackoverflow.com/questions/13540621/sending-websocket-message-over-c-sharp-socket

4. 

5. 

6. 

Problem from current source code listener

1. C# startIndex cannot be larger than length of string. Parameter name: startIndex - https://stackoverflow.com/questions/9813039/system-argumentoutofrangeexception-startindex-cannot-be-larger-than-length-of-s

2. c# no connection could be made because the target machine actively refused it

- https://stackoverflow.com/a/9695442/10763264

- https://www.codeproject.com/Answers/673274/No-connection-could-be-made-because-the-target-mac#answer2

3. Re code back - https://www.geeksforgeeks.org/socket-programming-in-c-sharp/

Socket Programming in C#