move to new skeleton

tutorials/http/video-stream/Makefile

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+PROG ?= example                   # Program we are building
+DELETE = rm -rf                   # Command to remove files
+OUT ?= -o $(PROG)                 # Compiler argument for output file
+SOURCES = main.c mongoose.c       # Source code files
+CFLAGS = -W -Wall -Wextra -g -I.  # Build options
+
+# Mongoose build options. See https://mongoose.ws/documentation/#build-options
+#CFLAGS_MONGOOSE += -DMG_ENABLE_LINES
+
+ifeq ($(OS),Windows_NT)   # Windows settings. Assume MinGW compiler. To use VC: make CC=cl CFLAGS=/MD OUT=/Feprog.exe
+  PROG ?= example.exe           # Use .exe suffix for the binary
+  CC = gcc                      # Use MinGW gcc compiler
+  CFLAGS += -lws2_32            # Link against Winsock library
+  DELETE = cmd /C del /Q /F /S  # Command prompt command to delete files
+  OUT ?= -o $(PROG)             # Build output
+endif
+
+all: $(PROG)              # Default target. Build and run program
+	$(RUN) ./$(PROG) $(ARGS)
+
+$(PROG): $(SOURCES)       # Build program from sources
+	$(CC) $(SOURCES) $(CFLAGS) $(CFLAGS_MONGOOSE) $(CFLAGS_EXTRA) $(OUT)
+
+clean:                    # Cleanup. Delete built program and all build artifacts
+	$(DELETE) $(PROG) *.o *.obj *.exe *.dSYM

tutorials/http/video-stream/README.md

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+See detailed tutorial at https://mongoose.ws/tutorials/http/video-stream/

tutorials/http/video-stream/main.c

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

tutorials/http/video-stream/mongoose.c

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+../../../mongoose.c

tutorials/http/video-stream/mongoose.h

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+../../../mongoose.h

tutorials/http/video-stream/web_root/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <title>example</title>
+    <meta charset="utf-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <style>
+      #container { margin-right: auto; margin-left: auto; max-width: 480px; }
+      #info { background: #e0f0f0; border-radius: .5em; padding: 2em;  }
+      img { width: 100%; margin-top: 1em; border: 1px solid #ccc; }
+
+    </style>
+  </head>
+  <body>
+    <div id="container">
+      <div id="info">
+        A div below shows live MJPEG video stream from the server, which
+        is simulated by reading files from the images/ directory.
+        <br/><br/>
+        You can also use <code>curl</code> command-line utility:
+        <br/><code>curl localhost:8000/api/video1</code>
+      </div>
+      <img src="/api/video1" />
+    </div>
+  </body>
+</html>