Revert "Stop publish examples to mongoose repo"

This reverts commit 1a17e17c462bdd4e1d26d8742f8b7087273e04c2.

PUBLISHED_FROM=80028de308c9a021955d1425d2bfee8feb85f193

examples/reverse_proxy/Makefile

@@ -0,0 +1,4 @@
+PROG = reverse_proxy
+MODULE_CFLAGS =
+SSL_LIB =
+include ../examples.mk

examples/reverse_proxy/frontend/hello.html

@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<html>
+  <body>
+    Hello
+  </body>
+</html>

examples/reverse_proxy/reverse_proxy.c

@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+/*
+ * This example shows how mongoose can be used as a reverse
+ * proxy for another http server.
+ *
+ * A common setup is to have a frontend web server that delegates
+ * some urls to a backend web server.
+ *
+ * In this example we create two webservers. The frontend listens on port
+ * 8000 and servers a static file and forwards any call matching the /api prefix
+ * to the backend.
+ *
+ * The backend listens on port 8001 and replies a simple JSON object which
+ * shows the request URI that the backend http server receives.
+ *
+ * Things to try out:
+ *
+ * curl http://localhost:8000/
+ * curl http://localhost:8000/api
+ * curl http://localhost:8000/api/foo
+ * curl http://localhost:8001/foo
+ *
+ * The reverse proxy functionality is enabled via the url rewrite functionality:
+ *
+ * ```
+ *   s_frontend_server_opts.url_rewrites =
+ *     "/api=http://localhost:8001,/=frontend/hello.html";
+ * ```
+ *
+ * This example maps the /api to a remote http server, and / to a
+ * specific file on the filesystem.
+ *
+ * Obviously you can use any http server as the backend, we spawn
+ * another web server from the same process in order to make the example easy
+ * to run.
+ */
+
+#include "../../mongoose.h"
+
+static const char *s_frontend_port = "8000";
+static struct mg_serve_http_opts s_frontend_server_opts;
+
+static const char *s_backend_port = "8001";
+static struct mg_serve_http_opts s_backend_server_opts;
+
+static void frontend_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      mg_serve_http(nc, hm, s_frontend_server_opts); /* Serve static content */
+      break;
+    default:
+      break;
+  }
+}
+
+static void backend_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+  int i;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      mg_send_response_line(nc, 200,
+                            "Content-Type: text/html\r\n"
+                            "Connection: close\r\n");
+      mg_printf(nc,
+                "{\"uri\": \"%.*s\", \"method\": \"%.*s\", \"body\": \"%.*s\", "
+                "\"headers\": {",
+                (int) hm->uri.len, hm->uri.p, (int) hm->method.len,
+                hm->method.p, (int) hm->body.len, hm->body.p);
+
+      for (i = 0; i < MG_MAX_HTTP_HEADERS && hm->header_names[i].len > 0; i++) {
+        struct mg_str hn = hm->header_names[i];
+        struct mg_str hv = hm->header_values[i];
+        mg_printf(nc, "%s\"%.*s\": \"%.*s\"", (i != 0 ? "," : ""), (int) hn.len,
+                  hn.p, (int) hv.len, hv.p);
+      }
+
+      mg_printf(nc, "}}");
+
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      break;
+    default:
+      break;
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  int i;
+
+  /* Open listening socket */
+  mg_mgr_init(&mgr, NULL);
+
+  /* configure frontend web server */
+  nc = mg_bind(&mgr, s_frontend_port, frontend_handler);
+  mg_set_protocol_http_websocket(nc);
+
+  s_frontend_server_opts.document_root = "frontend";
+  s_frontend_server_opts.url_rewrites =
+      "/api=http://localhost:8001,/=frontend/hello.html";
+
+  /* configure backend web server */
+  nc = mg_bind(&mgr, s_backend_port, backend_handler);
+  mg_set_protocol_http_websocket(nc);
+
+  s_backend_server_opts.document_root = "backend";
+
+  /* Parse command line arguments */
+  for (i = 1; i < argc; i++) {
+    if (strcmp(argv[i], "-D") == 0) {
+      mgr.hexdump_file = argv[++i];
+    } else if (strcmp(argv[i], "-r") == 0) {
+      s_frontend_server_opts.document_root = argv[++i];
+    }
+  }
+
+  printf("Starting web server on port %s\n", s_frontend_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+}