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65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
// Copyright (c) 2020 Cesanta Software Limited
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// All rights reserved
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#include "mongoose.h"
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// HTTP request handler function. It implements the following endpoints:
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// /api/video1 - hangs forever, returns MJPEG video stream
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// all other URI - serves web_root/ directory
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static void cb(struct mg_connection *c, int ev, void *ev_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_match(hm->uri, mg_str("/api/video1"), NULL)) {
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c->data[0] = 'S'; // Mark that connection as live streamer
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mg_printf(
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c, "%s",
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"HTTP/1.0 200 OK\r\n"
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"Cache-Control: no-cache\r\n"
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"Pragma: no-cache\r\nExpires: Thu, 01 Dec 1994 16:00:00 GMT\r\n"
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"Content-Type: multipart/x-mixed-replace; boundary=--foo\r\n\r\n");
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} else {
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struct mg_http_serve_opts opts = {.root_dir = "web_root"};
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mg_http_serve_dir(c, ev_data, &opts);
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}
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}
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}
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// The image stream is simulated by sending MJPEG frames specified by the
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// "files" array of file names.
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static void broadcast_mjpeg_frame(struct mg_mgr *mgr) {
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const char *files[] = {"images/1.jpg", "images/2.jpg", "images/3.jpg",
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"images/4.jpg", "images/5.jpg", "images/6.jpg"};
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size_t nfiles = sizeof(files) / sizeof(files[0]);
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static size_t i;
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const char *path = files[i++ % nfiles];
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struct mg_str data = mg_file_read(&mg_fs_posix, path); // Read next file
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struct mg_connection *c;
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for (c = mgr->conns; c != NULL; c = c->next) {
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if (c->data[0] != 'S') continue; // Skip non-stream connections
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if (data.buf == NULL) continue; // Skip on file read error
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mg_printf(c,
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"--foo\r\nContent-Type: image/jpeg\r\n"
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"Content-Length: %lu\r\n\r\n",
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data.len);
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mg_send(c, data.buf, data.len);
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mg_send(c, "\r\n", 2);
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}
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free((void *) data.buf);
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}
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static void timer_callback(void *arg) {
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broadcast_mjpeg_frame(arg);
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}
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int main(void) {
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struct mg_mgr mgr;
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mg_mgr_init(&mgr);
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mg_http_listen(&mgr, "http://localhost:8000", cb, NULL);
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mg_timer_add(&mgr, 500, MG_TIMER_REPEAT, timer_callback, &mgr);
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for (;;) mg_mgr_poll(&mgr, 50);
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mg_mgr_free(&mgr);
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return 0;
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}
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