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49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
// Copyright (c) 2020 Cesanta Software Limited
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// All rights reserved
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//
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// Example Websocket server. See https://mongoose.ws/tutorials/websocket-server/
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#include "mongoose.h"
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static const char *s_listen_on = "ws://localhost:8000";
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static const char *s_web_root = ".";
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// This RESTful server implements the following endpoints:
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// /websocket - upgrade to Websocket, and implement websocket echo server
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// /rest - respond with JSON string {"result": 123}
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// any other URI serves static files from s_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_OPEN) {
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// c->is_hexdumping = 1;
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} else 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, "/websocket")) {
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// Upgrade to websocket. From now on, a connection is a full-duplex
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// Websocket connection, which will receive MG_EV_WS_MSG events.
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mg_ws_upgrade(c, hm, NULL);
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} else if (mg_http_match_uri(hm, "/rest")) {
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// Serve REST response
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mg_http_reply(c, 200, "", "{\"result\": %d}\n", 123);
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} else {
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// Serve static files
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struct mg_http_serve_opts opts = {.root_dir = s_web_root};
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mg_http_serve_dir(c, ev_data, &opts);
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}
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} else if (ev == MG_EV_WS_MSG) {
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// Got websocket frame. Received data is wm->data. Echo it back!
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struct mg_ws_message *wm = (struct mg_ws_message *) ev_data;
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mg_ws_send(c, wm->data.ptr, wm->data.len, WEBSOCKET_OP_TEXT);
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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_mgr_init(&mgr); // Initialise event manager
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printf("Starting WS listener on %s/websocket\n", s_listen_on);
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mg_http_listen(&mgr, s_listen_on, 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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