TCP & UDP golang server + assambly client

This project has an examples for golang TCP and UDP server and assambly TCP and UDP client for windows. In essence, this is a regular chat server, just with a possibly useful client implementation in assembler.

Demonstration of work:

Server:

Client:

Server

In the config you can change the "protocol" option to "udp" or "tcp" to switch protocol. You can also use other parameters in this config.

Client

The client implementation uses WinAPI to work with sockets, accordingly this example only works with Windows. The entire implementation is located in the /socket/ folder. You can easily connect this code, an example for this is in the "Main.asm" file. Examples of chat clients for TCP and UDP have also been implemented.

To implement the client, some abstractions were written over the standard WinAPI functions:

Client (/socket/) functions:

-- General functionality --

Init socket library:

    stdcall ws_soket_init

Arguments:

• none

Return:

• error code in eax, if eax == 0, then initialization was successful

Close socket library:

    stdcall ws_close_connection

Arguments:

• none

Return:

• none

Create new socket:

    stdcall ws_new_socket, socket_type

Arguments:

• socket_type - WS_UDP or WS_TCP

Return:

• socket descriptor in eax. Successful if eax not zero.

Create new socket data structure (used for further work with the socket):

    stdcall ws_new_connection_structure, ip, port

Arguments:

• ip - server ip, port - server port

Return:

• adress of socket data structure (winapi sock_addr)

-- TCP functionality --

Connect to tcp server:

    stdcall ws_tcp_connect, socket_handle, server_addr

Arguments:

• socket_handle - socket descriptor (use ws_new_socket to get this descriptor)
• server_addr - socket data structure adress (use ws_new_connection_structure to get this structure)

Return:

• error code in eax, successful if eax == 0

Send message:

    stdcall ws_socket_send_msg_tcp, socket, msg, msg_len

Arguments:

• socket - socket descriptor
• msg - adress to message buffer
• msg_len - length of this message

Return:

• number of bytes sent in eax, if eax < 0, then an error has occurred

Get message:

    stdcall ws_socket_get_msg_tcp, socket, buf, buf_len

Arguments:

• socket - socket descriptor
• buf - buffer to save message
• buf_len - length of this buffer

Return:

• number of bytes sent in eax, if eax < 0, then an error has occurred

-- UDP functionality --

Send message:

    stdcall ws_socket_send_msg_udp, socket, soket_info, msg, msg_len

Arguments:

• socket - socket descriptor
• soket_info - socket data structure adress
• msg - adress to message buffer
• msg_len - length of this message

Return:

• number of bytes sent in eax, if eax < 0, then an error has occurred

Get message:

    stdcall ws_socket_get_msg_udp, socket, buf, buf_len

Arguments:

• socket - socket descriptor
• buf - buffer to save message
• buf_len - length of this buffer

Return:

• number of bytes sent in eax, if eax < 0, then an error has occurred