Linux Network Programming Training Course

Description

• Type

  Course

• Methodology

  Online

Description

This course is addressed to junior software developers. After the course completion, the trainees will be able to understand the architecture of well-known web servers such as Apache or Nginx, and implement their own network programs.
The course is 67% lectures, 33% hands-on exercises.

About this course

Requirements

C language
Linux user skills

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Subjects

• Options
• Linux
• Apache
• Network
• Web
• Green
• Programming
• TCP
• Network Training
• Operating System

Course programme

1. Sockets
   • Creating datagram sockets
   • Receiving and sending data
   • Creating and accepting TCP connections
   • Closing sockets
   • Handling errors
2. Handling more than one client in a simple way
   • Prefork model, as found in Apache
   • Forking a new process per client
   • Cleaning up after finished processes
   • Threads
   • Inetd, systemd units
3. Waiting for data
   • Blocking sockets
   • Non-blocking sockets and select
   • Select as a way to wait for "any of these sockets"
4. Organizing reads and writes
   • Dealing with short reads and writes
   • Reading up to a delimiter
   • Pipelined requests
   • Application-level buffers
5. Event-driven architecture
   • Using select for multiplexing all client connections in one thread
   • State machines
   • Callback hell
   • Event libraries
   • "Green" threads
6. Problem of 10000 connections
   • Problems with prefork model and select-based loop
   • poll as an alternative to select
   • Realtime signals and why you shouldn't use them
   • Epoll (linux) and kqueue (BSD)
   • Why and when epoll and kqueue are faster than poll/select
7. Timeouts and timers
   • SIGALARM
   • Timeout as a select argument
   • A simple case of all-equal timeouts
   • Priority queue as an abstract data stracture
   • Binary heap as a priority queue implementation
   • Timer wheel
   • timerfd
8. Integration with the operating system
   • Traditional daemons
   • Systemd socket activation
   • Logging
   • Handling signals
9. Performance and scalability optimizations
   • Choosing the right architecture
   • Setting socket options

Additional information

14 hours (usually 2 days including breaks)

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