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Linux System Programming Techniques

You're reading from   Linux System Programming Techniques Become a proficient Linux system programmer using expert recipes and techniques

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Product type Paperback
Published in May 2021
Publisher Packt
ISBN-13 9781789951288
Length 432 pages
Edition 1st Edition
Tools
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Author (1):
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Jack-Benny Persson Jack-Benny Persson
Author Profile Icon Jack-Benny Persson
Jack-Benny Persson
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Table of Contents (14) Chapters Close

Preface 1. Chapter 1: Getting the Necessary Tools and Writing Our First Linux Programs 2. Chapter 2: Making Your Programs Easy to Script FREE CHAPTER 3. Chapter 3: Diving Deep into C in Linux 4. Chapter 4: Handling Errors in Your Programs 5. Chapter 5: Working with File I/O and Filesystem Operations 6. Chapter 6: Spawning Processes and Using Job Control 7. Chapter 7: Using systemd to Handle Your Daemons 8. Chapter 8: Creating Shared Libraries 9. Chapter 9: Terminal I/O and Changing Terminal Behavior 10. Chapter 10: Using Different Kinds of IPC 11. Chapter 11: Using Threads in Your Programs 12. Chapter 12: Debugging Your Programs 13. Other Books You May Enjoy

Unix socket – creating the client

In the previous recipe, we created a Unix domain socket server. In this recipe, we'll create a client for that socket and then communicate between the client and the server.

In this recipe, we'll see how we can use the socket to communicate between a server and a client. Knowing how to communicate over a socket is essential to using sockets.

Getting ready

Before doing this recipe, you should have finished the previous recipe; otherwise, you won't have a server to talk to.

You'll also need the GCC compiler, the Make tool, and the generic Makefile for this recipe.

How to do it…

In this recipe, we'll write a client for the server that we wrote in the previous recipe. Once they are connected, the client can send messages to the server, and the server will respond with Message received. Let's get started:

  1. Write the following code in a file and save it as unix-client.c. Since this code...
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