mongoose/examples/http-restful-server/main.c
2022-06-29 17:31:31 -03:00

69 lines
3.1 KiB
C

// Copyright (c) 2020 Cesanta Software Limited
// All rights reserved
//
// HTTP server example. This server serves both static and dynamic content.
// It opens two ports: plain HTTP on port 8000 and HTTP on port 8443.
// It implements the following endpoints:
// /api/stats - respond with free-formatted stats on current connections
// /api/f2/:id - wildcard example, respond with JSON string {"result": "URI"}
// any other URI serves static files from s_root_dir
//
// To enable SSL/TLS (using self-signed certificates in PEM files),
// 1. make SSL=OPENSSL or make SSL=MBEDTLS
// 2. curl -k https://127.0.0.1:8443
#include "mongoose.h"
static const char *s_http_addr = "http://0.0.0.0:8000"; // HTTP port
static const char *s_https_addr = "https://0.0.0.0:8443"; // HTTPS port
static const char *s_root_dir = ".";
// We use the same event handler function for HTTP and HTTPS connections
// fn_data is NULL for plain HTTP, and non-NULL for HTTPS
static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
if (ev == MG_EV_ACCEPT && fn_data != NULL) {
struct mg_tls_opts opts = {
//.ca = "ca.pem", // Uncomment to enable two-way SSL
.cert = "server.pem", // Certificate PEM file
.certkey = "server.pem", // This pem contains both cert and key
};
mg_tls_init(c, &opts);
} else if (ev == MG_EV_HTTP_MSG) {
struct mg_http_message *hm = (struct mg_http_message *) ev_data;
if (mg_http_match_uri(hm, "/api/stats")) {
// Print some statistics about currently established connections
mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
mg_http_printf_chunk(c, "ID PROTO TYPE LOCAL REMOTE\n");
for (struct mg_connection *t = c->mgr->conns; t != NULL; t = t->next) {
char loc[40], rem[40];
mg_http_printf_chunk(c, "%-3lu %4s %s %-15s %s\n", t->id,
t->is_udp ? "UDP" : "TCP",
t->is_listening ? "LISTENING"
: t->is_accepted ? "ACCEPTED "
: "CONNECTED",
mg_straddr(&t->loc, loc, sizeof(loc)),
mg_straddr(&t->rem, rem, sizeof(rem)));
}
mg_http_printf_chunk(c, ""); // Don't forget the last empty chunk
} else if (mg_http_match_uri(hm, "/api/f2/*")) {
mg_http_reply(c, 200, "", "{\"result\": \"%.*s\"}\n", (int) hm->uri.len,
hm->uri.ptr);
} else {
struct mg_http_serve_opts opts = {.root_dir = s_root_dir};
mg_http_serve_dir(c, ev_data, &opts);
}
}
(void) fn_data;
}
int main(void) {
struct mg_mgr mgr; // Event manager
mg_log_set("2"); // Set to 3 to enable debug
mg_mgr_init(&mgr); // Initialise event manager
mg_http_listen(&mgr, s_http_addr, fn, NULL); // Create HTTP listener
mg_http_listen(&mgr, s_https_addr, fn, (void *) 1); // HTTPS listener
for (;;) mg_mgr_poll(&mgr, 1000); // Infinite event loop
mg_mgr_free(&mgr);
return 0;
}