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#include <stdio.h>
#include <string.h>
#include "mongoose.h"
// This function will be called by mongoose on every new request.
static int begin_request_handler(struct mg_connection *conn) {
const struct mg_request_info *request_info = mg_get_request_info(conn);
char content[100];
// Prepare the message we're going to send
int content_length = snprintf(content, sizeof(content),
"Hello from mongoose! Remote port: %d",
// Send HTTP reply to the client
"HTTP/1.1 200 OK\r\n"
"Content-Type: text/plain\r\n"
"Content-Length: %d\r\n" // Always set Content-Length
content_length, content);
// Returning non-zero tells mongoose that our function has replied to
// the client, and mongoose should not send client any more data.
return 1;
int main(void) {
struct mg_context *ctx;
struct mg_callbacks callbacks;
// List of options. Last element must be NULL.
const char *options[] = {"listening_ports", "8080", NULL};
// Prepare callbacks structure. We have only one callback, the rest are NULL.
memset(&callbacks, 0, sizeof(callbacks));
callbacks.begin_request = begin_request_handler;
// Start the web server.
ctx = mg_start(&callbacks, NULL, options);
// Wait until user hits "enter". Server is running in separate thread.
// Navigating to http://localhost:8080 will invoke begin_request_handler().
// Stop the server.
return 0;
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