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Hands-On Network Programming with C

You're reading from   Hands-On Network Programming with C Learn socket programming in C and write secure and optimized network code

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Product type Paperback
Published in May 2019
Publisher Packt
ISBN-13 9781789349863
Length 478 pages
Edition 1st Edition
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Author (1):
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Lewis Van Winkle Lewis Van Winkle
Author Profile Icon Lewis Van Winkle
Lewis Van Winkle
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Table of Contents (25) Chapters Close

Preface 1. Section 1 - Getting Started with Network Programming FREE CHAPTER
2. Introducing Networks and Protocols 3. Getting to Grips with Socket APIs 4. An In-Depth Overview of TCP Connections 5. Establishing UDP Connections 6. Hostname Resolution and DNS 7. Section 2 - An Overview of Application Layer Protocols
8. Building a Simple Web Client 9. Building a Simple Web Server 10. Making Your Program Send Email 11. Section 3 - Understanding Encrypted Protocols and OpenSSL
12. Loading Secure Web Pages with HTTPS and OpenSSL 13. Implementing a Secure Web Server 14. Establishing SSH Connections with libssh 15. Section 4 - Odds and Ends
16. Network Monitoring and Security 17. Socket Programming Tips and Pitfalls 18. Web Programming for the Internet of Things 19. Answers to Questions 20. Setting Up Your C Compiler on Windows 21. Setting Up Your C Compiler on Linux 22. Setting Up Your C Compiler on macOS 23. Example Programs 24. Other Book You May Enjoy

Chapter 13, Socket Programming Tips and Pitfalls

  1. Is it ever acceptable just to terminate a program if a network error is detected?

Yes. For some applications terminating on error is the right call. For more substantial applications, the ability to retry and continue on may be needed.

  1. Which system functions are used to convert error codes into text descriptions?

You can use FormatMessage() on Windows and strerror() on other platforms to obtain error messages.

  1. How long does it take for a call to connect() to complete on a TCP socket?

A call to connect() typically blocks for at least one network time round trip while the TCP three-way handshake is being completed.

  1. What happens if you call send() on a disconnected TCP socket?

On Unix-based systems, your program can receive a SIGPIPE signal. It is important to plan for that. Otherwise, send...

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