Flick: A tiny web server for embedded systems

Note:

This http server has now been merged into ESP-IDF. Subsequent development/enhancements have happened to it in the ESP-IDF component. This repository is still functional, and can be used for Linux/Embedded-Development.

Features

• Low-footprint for microcontroller usage scenario
• No dynamic allocations
• Portable across Linux and RTOS platforms
  • Unix (Mac / Linux)
  • ESP-32
• Supports HTTP/1.1
• Registration of URI handlers for GET, PUT and POST requests
• Supports HTTP pipelining (multiple requests on the same socket)
• Supports persistent sockets with context preserved across multiple requests
• Supports multiple open connections at the same time
• Is single-threaded, so a single connection is served at a given time
• Allows per-socket overriding of the Web Server's send/receive functions

Notes

• The webserver is just out of the oven, do let me know in case of any issues/code-review reports
• Would love to hear any other features requests
• Hasn't been reviewed by any other person, any comments would be helpful

Usage

• Write a function handler for a URI GET or POST
• Start the web server
• Register the URI handler, as below

/* Write a GET handler */
int hello_get_handler(httpd_req_t *req)
{
	char a[] = "Hello World!";
	/* Send a simple response */
	httpd_resp_send(req, a, strlen(a));
	return OS_SUCCESS;
}

struct httpd_uri get_handler = {
	.uri = "/hello",
	.get = hello_get_handler
};

int main()
{
     /* Start the web server */
     httpd_start();
     /* Register the handler */
     httpd_register_uri_handler(&get_handler);
}

Give it a spin!

• The API is available at: include/httpd.h
• Look at an example: examples/simple/
• Run the tests: test/