C++ Socket Demo

• (tcp-game.cpp) A multithreading TCP game server listening on port 4000.
• (udp-echo.cpp) A UDP echo server listening on port 4000.
• (http.cpp) A multithreading HTTP Server on port 3000, with 0 - 999ms random delay.
• Graceful shutdown for TCP and HTTP.

Other versions:

• Makefile (current)
• CMake
• Bazel

Build and start server

$ make && ./cpp-socket
[UDP] Socket is listening on 4000
[TCP] Socket is listening on 4000
[HTTP] Socket is listening on 3000

TCP Game

Establish two connections to server.

connection #1:

$ nc 127.0.0.1 4000
>> 1 players online, last number is 1, you must send the next number but skip numbers which multiples of 3 or includes the digit 3.
2   (your input)
>> 2 players online, 127.0.0.1:59385 sent 2.
>> 127.0.0.1:59897 lost, 2 players online.
4   (your input)
>> 1 players online, 127.0.0.1:59385 sent 4.

connection #2:

$ nc 127.0.0.1 4000
>> 2 players online, last number is 1, you must send the next number but skip numbers which multiples of 3 or includes the digit 3.
>> 2 players online, 127.0.0.1:59385 sent 2.
3   (your input)
>> you are lost
(disconnected)

UDP Echo

$ nc -u 127.0.0.1 4000
hello                   (your input)
hello                   (response)

HTTP

$ curl http://127.0.0.1:3000
Hello

Graceful shutdown

You can send SIGTERM or SIGINT (ctrl-C) to start graceful shutdown:

$ ./cpp-socket
[UDP] Socket is listening on 4000
[TCP] Socket is listening on 4000
[HTTP] Socket is listening on 3000
[TCP] A connection is accepted now.
[TCP] 127.0.0.1 connected...
(ctrl-C)
[SIGNAL] 2 workers are running, waiting for them finish ...
(wait for all connections disconnect)
[TCP] 127.0.0.1 disconnected.
(exited)

Documentation

• 云引擎服务总览
• 云引擎 C++ 运行环境（WIP）
• 云引擎游戏后端开发指南（WIP）
• 命令行工具 CLI 使用指南