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/*
* Copyright (c) 2014 Cesanta Software Limited
* All rights reserved
*/
#include "mongoose.h"
static sig_atomic_t s_signal_received = 0;
static const char *s_http_port = "8000";
static struct mg_serve_http_opts s_http_server_opts;
static void signal_handler(int sig_num) {
signal(sig_num, signal_handler); // Reinstantiate signal handler
s_signal_received = sig_num;
}
static int is_websocket(const struct mg_connection *nc) {
return nc->flags & MG_F_IS_WEBSOCKET;
}
static void broadcast(struct mg_connection *nc, const struct mg_str msg) {
struct mg_connection *c;
char buf[500];
char addr[32];
mg_sock_addr_to_str(&nc->sa, addr, sizeof(addr),
MG_SOCK_STRINGIFY_IP | MG_SOCK_STRINGIFY_PORT);
snprintf(buf, sizeof(buf), "%s %.*s", addr, (int) msg.len, msg.p);
printf("%s\n", buf); /* Local echo. */
for (c = mg_next(nc->mgr, NULL); c != NULL; c = mg_next(nc->mgr, c)) {
if (c == nc) continue; /* Don't send to the sender. */
mg_send_websocket_frame(c, WEBSOCKET_OP_TEXT, buf, strlen(buf));
}
}
static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
switch (ev) {
case MG_EV_WEBSOCKET_HANDSHAKE_DONE: {
/* New websocket connection. Tell everybody. */
broadcast(nc, mg_mk_str("++ joined"));
break;
}
case MG_EV_WEBSOCKET_FRAME: {
struct websocket_message *wm = (struct websocket_message *) ev_data;
/* New websocket message. Tell everybody. */
struct mg_str d = {(char *) wm->data, wm->size};
broadcast(nc, d);
break;
}
case MG_EV_HTTP_REQUEST: {
mg_serve_http(nc, (struct http_message *) ev_data, s_http_server_opts);
break;
}
case MG_EV_CLOSE: {
/* Disconnect. Tell everybody. */
if (is_websocket(nc)) {
broadcast(nc, mg_mk_str("-- left"));
}
break;
}
}
}
int main(void) {
struct mg_mgr mgr;
struct mg_connection *nc;
signal(SIGTERM, signal_handler);
signal(SIGINT, signal_handler);
setvbuf(stdout, NULL, _IOLBF, 0);
setvbuf(stderr, NULL, _IOLBF, 0);
mg_mgr_init(&mgr, NULL);
nc = mg_bind(&mgr, s_http_port, ev_handler);
mg_set_protocol_http_websocket(nc);
s_http_server_opts.document_root = "."; // Serve current directory
s_http_server_opts.enable_directory_listing = "yes";
printf("Started on port %s\n", s_http_port);
while (s_signal_received == 0) {
mg_mgr_poll(&mgr, 200);
}
mg_mgr_free(&mgr);
return 0;
}