TCP-IP-NetworkNote is a comprehensive technical reference and guide for implementing network communication using TCP and UDP sockets in C and C++. It provides a detailed manual for using the POSIX socket API and covers the implementation of network protocols, synchronous and asynchronous I/O patterns, and concurrent programming models.
The project is distinguished by its focus on cross-platform networking, offering a detailed comparison of socket implementation details and adaptation utilities between Linux and Windows Winsock environments. It specifically addresses the differences in header files, initialization routines, and error handling across these operating systems.
The reference covers a broad range of system-level capabilities, including concurrent server development via multi-threading and multi-processing, I/O multiplexing with epoll, and inter-process communication using pipes. It also details socket lifecycle management, domain name resolution, and the implementation of application-layer protocols such as HTTP for web servers.
The documentation includes technical notes on system programming tasks such as process forking, signal handling, and the use of mutexes and semaphores for resource synchronization.