--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/docs/examples/multi-app.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,177 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2018, 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.haxx.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.
+ *
+ ***************************************************************************/
+/* <DESC>
+ * A basic application source code using the multi interface doing two
+ * transfers in parallel.
+ * </DESC>
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+/* somewhat unix-specific */
+#include <sys/time.h>
+#include <unistd.h>
+
+/* curl stuff */
+#include <curl/curl.h>
+
+/*
+ * Download a HTTP file and upload an FTP file simultaneously.
+ */
+
+#define HANDLECOUNT 2   /* Number of simultaneous transfers */
+#define HTTP_HANDLE 0   /* Index for the HTTP transfer */
+#define FTP_HANDLE 1    /* Index for the FTP transfer */
+
+int main(void)
+{
+  CURL *handles[HANDLECOUNT];
+  CURLM *multi_handle;
+
+  int still_running = 0; /* keep number of running handles */
+  int i;
+
+  CURLMsg *msg; /* for picking up messages with the transfer status */
+  int msgs_left; /* how many messages are left */
+
+  /* Allocate one CURL handle per transfer */
+  for(i = 0; i<HANDLECOUNT; i++)
+    handles[i] = curl_easy_init();
+
+  /* set the options (I left out a few, you'll get the point anyway) */
+  curl_easy_setopt(handles[HTTP_HANDLE], CURLOPT_URL, "https://example.com");
+
+  curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_URL, "ftp://example.com");
+  curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_UPLOAD, 1L);
+
+  /* init a multi stack */
+  multi_handle = curl_multi_init();
+
+  /* add the individual transfers */
+  for(i = 0; i<HANDLECOUNT; i++)
+    curl_multi_add_handle(multi_handle, handles[i]);
+
+  /* we start some action by calling perform right away */
+  curl_multi_perform(multi_handle, &still_running);
+
+  while(still_running) {
+    struct timeval timeout;
+    int rc; /* select() return code */
+    CURLMcode mc; /* curl_multi_fdset() return code */
+
+    fd_set fdread;
+    fd_set fdwrite;
+    fd_set fdexcep;
+    int maxfd = -1;
+
+    long curl_timeo = -1;
+
+    FD_ZERO(&fdread);
+    FD_ZERO(&fdwrite);
+    FD_ZERO(&fdexcep);
+
+    /* set a suitable timeout to play around with */
+    timeout.tv_sec = 1;
+    timeout.tv_usec = 0;
+
+    curl_multi_timeout(multi_handle, &curl_timeo);
+    if(curl_timeo >= 0) {
+      timeout.tv_sec = curl_timeo / 1000;
+      if(timeout.tv_sec > 1)
+        timeout.tv_sec = 1;
+      else
+        timeout.tv_usec = (curl_timeo % 1000) * 1000;
+    }
+
+    /* get file descriptors from the transfers */
+    mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+
+    if(mc != CURLM_OK) {
+      fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+      break;
+    }
+
+    /* On success the value of maxfd is guaranteed to be >= -1. We call
+       select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
+       no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
+       to sleep 100ms, which is the minimum suggested value in the
+       curl_multi_fdset() doc. */
+
+    if(maxfd == -1) {
+#ifdef _WIN32
+      Sleep(100);
+      rc = 0;
+#else
+      /* Portable sleep for platforms other than Windows. */
+      struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
+      rc = select(0, NULL, NULL, NULL, &wait);
+#endif
+    }
+    else {
+      /* Note that on some platforms 'timeout' may be modified by select().
+         If you need access to the original value save a copy beforehand. */
+      rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
+    }
+
+    switch(rc) {
+    case -1:
+      /* select error */
+      break;
+    case 0: /* timeout */
+    default: /* action */
+      curl_multi_perform(multi_handle, &still_running);
+      break;
+    }
+  }
+
+  /* See how the transfers went */
+  while((msg = curl_multi_info_read(multi_handle, &msgs_left))) {
+    if(msg->msg == CURLMSG_DONE) {
+      int idx;
+
+      /* Find out which handle this message is about */
+      for(idx = 0; idx<HANDLECOUNT; idx++) {
+        int found = (msg->easy_handle == handles[idx]);
+        if(found)
+          break;
+      }
+
+      switch(idx) {
+      case HTTP_HANDLE:
+        printf("HTTP transfer completed with status %d\n", msg->data.result);
+        break;
+      case FTP_HANDLE:
+        printf("FTP transfer completed with status %d\n", msg->data.result);
+        break;
+      }
+    }
+  }
+
+  curl_multi_cleanup(multi_handle);
+
+  /* Free the CURL handles */
+  for(i = 0; i<HANDLECOUNT; i++)
+    curl_easy_cleanup(handles[i]);
+
+  return 0;
+}