August 2025
Intermediate to advanced
272 pages
6h 14m
English
Content preview from Network Programming in Elixir and Erlang
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Building a TCP Echo Server
Our echo server will listen for TCP client connections and will be able to keep multiple connections open at the same time. When a client sends a line of data (characters ending in a newline \n), our server will send that line of data back. That’s all.
First things first—let’s create a new Mix project for our server:
| | > mix new tcp_echo_server --sup --module TCPEchoServer |
| | * creating README.md |
| | * creating .formatter.exs |
| | * creating .gitignore |
| | * creating mix.exs |
| | * creating lib |
| | * creating lib/tcp_echo_server.ex |
| | * creating lib/tcp_echo_server/application.ex |
| | * creating test |
| | * creating test/test_helper.exs |
| | * creating test/tcp_echo_server_test.exs |
| | |
| | Your Mix project was created successfully. ... |
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