Lotos WebServer

Lotos is a tiny but high-performance HTTP WebServer following the Reactor model, using non-blocking IO and IO multiplexing(epoll ET) to handle concurrency. Lotos is written in pure c and well tested. Several HTTP headers (Connection, Content-Length, etc.) is supported and more will be added in the future.

-------------------------------------------------------------------------------
Language                     files          blank        comment           code
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C                               19            367            275           2428
C/C++ Header                    12            120            131            514
make                             2             17              0             42
CMake                            1              7              0             18
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SUM:                            34            511            406           3002
-------------------------------------------------------------------------------

Documents

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项目目的	并发模型	设计实现	测试调试	性能测试	调试记录

Environment

• gcc >= 5.4 or clang >= 3.5 (gcc4.9 is not supported)
• Linux only, kernel version >= 3.9

Usage

Build

$ git clone https://github.com/chendotjs/lotos.git
$ cd lotos/src/
$ make && make test

Run

Usage: lotos -r html_root_dir [-p port] [-t timeout] [-w worker_num] [-d (debug mode)]

$ ./lotos -r ../www -t 60 -w 4 -p 8888

then you can visit http://localhost:8888/.

Feature

• EPOLL Edge Trigger mode, more efficient.
• Nonblocking IO.
• Multiprocessing, port reuse.
• TCP connections managed by min-heap data structure.
• HTTP persistent connection support. Close TCP connection when connection expires.
• Parse HTTP requests using FSM.
• Handle errors and exceptions.
• Memory pool is optional.

Test

Unit tests are based on minctest. It is simple, lightweight, and flexible.

Moreover, I contributed some codes to it.

Benchmark

Please refer to BENCHMARK.md.

Reference

nginx

node.js http parser

Tkeed