-/*****************************************************************************
+/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * $Id$
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
*
- * This is an example application source code using the multi interface.
- */
+ * 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 http://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.
+ *
+ ***************************************************************************/
+/* This is an example application source code using the multi interface. */
#include <stdio.h>
#include <string.h>
#define HTTP_HANDLE 0 /* Index for the HTTP transfer */
#define FTP_HANDLE 1 /* Index for the FTP transfer */
-int main(int argc, char **argv)
+int main(void)
{
CURL *handles[HANDLECOUNT];
CURLM *multi_handle;
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, "http://website.com");
+ curl_easy_setopt(handles[HTTP_HANDLE], CURLOPT_URL, "http://example.com");
- curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_URL, "ftp://ftpsite.com");
- curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_UPLOAD, TRUE);
+ 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();
curl_multi_add_handle(multi_handle, handles[i]);
/* we start some action by calling perform right away */
- while(CURLM_CALL_MULTI_PERFORM ==
- curl_multi_perform(multi_handle, &still_running));
+ curl_multi_perform(multi_handle, &still_running);
- while(still_running) {
+ do {
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;
+ int maxfd = -1;
+
+ long curl_timeo = -1;
FD_ZERO(&fdread);
FD_ZERO(&fdwrite);
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 */
- curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
- /* In a real-world program you OF COURSE check the return code of the
- function calls, *and* you make sure that maxfd is bigger than -1 so
- that the call to select() below makes sense! */
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ /* 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, do something else */
- break;
- default:
- /* one or more of curl's file descriptors say there's data to read
- or write */
- while(CURLM_CALL_MULTI_PERFORM ==
- curl_multi_perform(multi_handle, &still_running));
+ case 0: /* timeout */
+ default: /* action */
+ curl_multi_perform(multi_handle, &still_running);
break;
}
- }
+ } while(still_running);
/* See how the transfers went */
while ((msg = curl_multi_info_read(multi_handle, &msgs_left))) {
if (msg->msg == CURLMSG_DONE) {
-
- int idx, found = 0;
-
- /* Find out which handle this message is about */
- for (idx=0; (!found && (idx<HANDLECOUNT)); idx++) found = (msg->easy_handle == handles[idx]);
-
- 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;
- }
+ int idx, found = 0;
+
+ /* Find out which handle this message is about */
+ for (idx=0; idx<HANDLECOUNT; idx++) {
+ 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;
+ }
}
}
projects / platform / upstream / curl.git / blobdiff