seHTTPd implements a small and efficient web server with 1K lines of C code.
I/O multiplexing is achieved using epoll.
- Single-threaded, non-blocking I/O based on event-driven model
- HTTP persistent connection (HTTP Keep-Alive)
- A timer for executing the handler after having waited the specified time
- Using epoll API to monitor multiple file descriptors to see if I/O is possible on any of them
- Use sendfile() for zero-copy
- Use multithreading to achieve high performance
- Use threadpool to reduce thread creation overhead
- Use memorypool to reduce http_request creation overhead
- Use wrk and htstress to evaluate sehttpd web server with keep-alive and without keep-alive performance
- Compare performance between original version and final version
+----------------------------------------------+
| |
| +-----------+ wait +-----------------+ | copy +---------+
| | +----------> +------------> |
| | IO Device | 1 | Kernel's buffer | | 2 | Process |
| | <----------+ <------------+ |
| +-----------+ +-----------------+ | +---------+
| |
+----------------------------------------------+
At the moment, seHTTPd supports Linux based systems with epoll system call.
Building seHTTPd is straightforward.
$ make./sehttpd./sehttpd -p 8082 Specify the port number with -p flag, by default the server accepts connections on port 8081.
./sehttpd -w ./wwwSpecify the web root with -w flag, by default the web root is "./www".
seHTTPd is released under the MIT License. Use of this source code is governed
by a MIT License that can be found in the LICENSE file.