Linux Socket Programming Hands On - Zero to Hero

Learn how Linux sockets work as file descriptors via system calls, and how to create, bind, listen, accept, connect, and read and write between local and remote processes.

bind assigns a socket address with a generic address structure and length; the server listens with a backlog, accepts connections to create new client sockets, then reads and writes.

Build a practical echo client by creating a socket, connecting to a server, and exchanging a hello message with the server before closing the connection.

Compare echo and concurrent servers, and learn how fork creates child processes to handle multiple clients in parallel using a concurrent server.

Explore how a concurrent server uses forked child processes, wait and signal system calls to obtain termination status, and manage jambi and jumbe processes with a signal handler.

Build a UDP server using sockets, bind to a network address, and receive datagrams from clients into a buffer.

Learn how the select system call monitors multiple fds with read, write, and except sets. Understand nfds, timeouts, and the workflow from a listening socket to serving ready descriptors.

Practice the practical implementation of the select system call by building a server that uses fd sets to monitor listening and client sockets, accepts connections, and reads and writes data.