Communication between debugger and VSCode

Server is an application that accepts commands through the socket and executes them in debugger

Command ark --debugger --debugger-port=<port_number> --debugger-library-path=<path_to_debugger_library> launches debug server

--debugger-library-path is an optional parameter

VSCode provides us client interface and sending commands to the debugger with socket

Description of debug starting process

Server side

• Server creates a TCP socket for communication with client
• Firstly server accepts a test client
• Secondly server accepts a real client and debug session begins

Client side

• Client runs a server than waiting for a TCP socket
• It's critical for VSCode to have a debug server initialized at allocated time so we establish a test connection firstly to check it
• We create a test client every 100 milliseconds to check is socket ready for a debug session
• When the connection is established (if it is at the allocated time) test client disconnects and real client connects to server
• If connection was not established at the allocated time the Can not launch debug server error will be thrown