upgrade EasySocket

[flufy3d]

Improvements to the Original Library

Below is a summary of the enhancements made to the original library as indicated in the patch file:

1. Introduction of stopFlag and listeningSocket

   • A std::atomic<bool> stopFlag has been introduced to facilitate the stopping of the socket listening process in a thread-safe manner.
   • A SOCKET listeningSocket has been introduced to hold the socket that is currently listening for incoming connections.

2. Enhanced Error Handling

   • The error handling has been improved to better manage socket errors and data size exceptions during the socket communication process.

3. Improved Socket Closure

   • The closeAllConnections method has been introduced to close all active connections and clear the respective maps holding the client and server sockets.
   • The sockQuit function is called within the closeAllConnections method to clean up the socket library after closing all connections.

4. Improved Socket Sending and Receiving

   • The socketSend method has been updated to check both the client and server socket maps to find the appropriate socket associated with the channel name before sending data.
   • The socketReceive method has been introduced to facilitate the receiving of data from a socket associated with a given channel name, with appropriate error handling and buffer management.

5. Refined Socket Listening

   • The socketListen method has been refined to incorporate the stopFlag to allow for the graceful stopping of the listening process.
   • The method now handles the SOCKET_ERROR more gracefully, avoiding the throwing of exceptions in certain cases and instead opting for a loop continuation, allowing for more robust server operation.

6. Better Management of Client and Server Sockets

   • The client and server sockets are now stored in separate unordered maps, allowing for better organization and management of the sockets.
   • The socketSend and socketReceive methods have been updated to check both the client and server socket maps to find the correct socket associated with a given channel name, improving the flexibility of the socket communication process.

7. Introduction of New Exceptions

   • A new exception, masesk::invalid_socket_exception, has been introduced to handle cases where an invalid socket is encountered, enhancing the robustness of the error handling process.

8. Code Cleanup and Organization

   • The code has been reorganized and cleaned up to improve readability and maintainability.
   • Redundant code has been removed, and the structure of the methods has been optimized for better performance and efficiency.