un-nest curl

curl-8.15.0/docs/examples/multi-double.c

@@ -0,0 +1,93 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+/* <DESC>
+ * multi interface code doing two parallel HTTP transfers
+ * </DESC>
+ */
+#include <stdio.h>
+#include <string.h>
+
+/* curl stuff */
+#include <curl/curl.h>
+
+/*
+ * Simply download two HTTP files!
+ */
+int main(void)
+{
+  CURL *http_handle;
+  CURL *http_handle2;
+  CURLM *multi_handle;
+
+  int still_running = 1; /* keep number of running handles */
+
+  http_handle = curl_easy_init();
+  http_handle2 = curl_easy_init();
+
+  /* set options */
+  curl_easy_setopt(http_handle, CURLOPT_URL, "https://www.example.com/");
+
+  /* set options */
+  curl_easy_setopt(http_handle2, CURLOPT_URL, "http://localhost/");
+
+  /* init a multi stack */
+  multi_handle = curl_multi_init();
+
+  /* add the individual transfers */
+  curl_multi_add_handle(multi_handle, http_handle);
+  curl_multi_add_handle(multi_handle, http_handle2);
+
+  while(still_running) {
+    CURLMsg *msg;
+    int queued;
+    CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
+
+    if(still_running)
+      /* wait for activity, timeout or "nothing" */
+      mc = curl_multi_poll(multi_handle, NULL, 0, 1000, NULL);
+
+    if(mc)
+      break;
+
+    do {
+      msg = curl_multi_info_read(multi_handle, &queued);
+      if(msg) {
+        if(msg->msg == CURLMSG_DONE) {
+          /* a transfer ended */
+          fprintf(stderr, "Transfer completed\n");
+        }
+      }
+    } while(msg);
+  }
+
+  curl_multi_remove_handle(multi_handle, http_handle);
+  curl_multi_remove_handle(multi_handle, http_handle2);
+
+  curl_multi_cleanup(multi_handle);
+
+  curl_easy_cleanup(http_handle);
+  curl_easy_cleanup(http_handle2);
+
+  return 0;
+}