httplib

Simple usage:

#include "http.h"

int main(void)
{
    /*
     * Call the http_request() function to make an HTTP request.
     * For the first argument, provide the HTTP method (e.g. GET, POST).
     * For the second argument, provide the URL.
     * For the third argument, provide any options needed to complete the request.
     * (When no options are needed, the third argument may be NULL.)
     *
     * This function returns a newly allocated pointer to a `struct http_response`
     * which may be used to access attributes of the server response.
     *
     * Always dispose of the response pointer with http_response_free().
     */

    struct http_response *resp = http_request("GET", "http://google.com/", NULL);

    printf("HEADERS:\n%s\n\n", http_response_headers(resp));
    printf("CONTENT:\n%s\n\n", http_response_content(resp));

    http_response_free(resp);
}

Things you can do with struct http_response *:

• size_t http_response_headers_length(struct http_response *): Get the size of the response headers.

• const char *http_response_headers(struct http_response *): Get the headers.

• size_t http_response_content_length(struct http_response *): Get the content length.

• const char *http_response_content(struct http_response *): Get the response body content.

• int http_response_redirect_count(struct http_response *): Get the number of redirects.

• const char *http_response_url(struct http_response *): Get the final URL.

• int http_response_status_code(struct http_response *): Get the status code.

• const char *http_response_redirect_url(struct http_response *): Get the redirect URL.

• double http_response_elapsed(struct http_response *): Get the elapsed time from request to response.

Adding authorization:

#include "http.h"

int main(void)
{
    struct http_opts opts = {
        .auth = HTTP_AUTH_BEARER("token-abc123"),
    };
    struct http_response *resp = http_request("GET", "https://httpbin.org/bearer", &opts);
    ...
    http_response_free(resp);
}

POSTing simple form data:

#include "http.h"

int main(void)
{
    struct http_opts opts = {
        .data = "key1=value1&key2=value2",
    };
    struct http_response *resp = http_request("POST", "https://httpbin.org/anything", &opts);
    ...
    http_response_free(resp);
}

Sending JSON:

#include "http.h"

int main(void)
{
    struct http_opts opts = {
        .json = "{\"key1\": \"value1\", \"key2\": \"value2\"}",
    };
    struct http_response *resp = http_request("PUT", "https://httpbin.org/anything", &opts);
    ...
    http_response_free(resp);
}

Adding cookies:

#include "http.h"

int main(void)
{
    struct http_opts opts = {
        .cookies = "key1=value1;key2=value2",
    };
    struct http_response *resp = http_request("GET", "https://httpbin.org/cookies", &opts);
    ...
    http_response_free(resp);
}

Setting a timeout:

#include "http.h"

int main(void)
{
    struct http_opts opts = {
        .timeout_secs = 1
    };
    struct http_response *resp = http_request("GET", "https://httpbin.org/delay/2", &opts);
    ...
    http_response_free(resp);
}