49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
// Copyright (c) 2022 Cesanta Software Limited
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// All rights reserved
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//
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// REST basics example
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// It implements the following endpoints:
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// /api/f1 - respond with a simple mock result
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// /api/sum - respond with the result of adding two numbers
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// any other URI serves static files from s_root_dir
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// Results are JSON strings
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#include "mongoose.h"
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static const char *s_http_addr = "http://localhost:8000"; // HTTP port
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static const char *s_root_dir = "web_root";
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static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
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if (ev == MG_EV_HTTP_MSG) {
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struct mg_http_message *hm = (struct mg_http_message *) ev_data;
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if (mg_http_match_uri(hm, "/api/f1")) {
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mg_http_reply(c, 200, "Content-Type: application/json\r\n", "{%m:%d}\n",
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MG_ESC("result"), 123);
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} else if (mg_http_match_uri(hm, "/api/sum")) {
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// Attempt to fetch a JSON array from the body, hm->body
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struct mg_str json = hm->body;
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double num1, num2;
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if (mg_json_get_num(json, "$[0]", &num1) &&
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mg_json_get_num(json, "$[1]", &num2)) {
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// Success! create a JSON response
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mg_http_reply(c, 200, "Content-Type: application/json\r\n", "{%m:%g}\n",
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MG_ESC("result"), num1 + num2);
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}
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} else {
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struct mg_http_serve_opts opts = {.root_dir = s_root_dir};
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mg_http_serve_dir(c, ev_data, &opts);
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}
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}
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(void) fn_data;
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}
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int main(void) {
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struct mg_mgr mgr; // Event manager
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mg_log_set(MG_LL_DEBUG); // Set log level
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mg_mgr_init(&mgr); // Initialise event manager
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mg_http_listen(&mgr, s_http_addr, fn, NULL); // Create HTTP listener
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for (;;) mg_mgr_poll(&mgr, 1000); // Infinite event loop
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mg_mgr_free(&mgr);
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return 0;
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}
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