examples: Added POP3 multi example
diff --git a/docs/examples/Makefile.inc b/docs/examples/Makefile.inc
index 9e73318..590fc8d 100644
--- a/docs/examples/Makefile.inc
+++ b/docs/examples/Makefile.inc
@@ -6,9 +6,10 @@
sendrecv httpcustomheader certinfo chkspeed ftpgetinfo ftp-wildcard \
smtp-mail smtp-multi smtp-ssl smtp-tls smtp-vrfy smtp-expn rtsp \
externalsocket resolve progressfunc pop3-retr pop3-list pop3-uidl pop3-dele \
- pop3-top pop3-stat pop3-noop pop3-ssl pop3-tls imap-list imap-fetch \
- imap-store imap-append imap-examine imap-search imap-create imap-delete \
- imap-copy imap-noop imap-ssl imap-tls url2file sftpget ftpsget postinmemory
+ pop3-top pop3-stat pop3-noop pop3-ssl pop3-tls pop3-multi imap-list \
+ imap-fetch imap-store imap-append imap-examine imap-search imap-create \
+ imap-delete imap-copy imap-noop imap-ssl imap-tls url2file sftpget ftpsget \
+ postinmemory
# These examples require external dependencies that may not be commonly
# available on POSIX systems, so don't bother attempting to compile them here.
diff --git a/docs/examples/pop3-multi.c b/docs/examples/pop3-multi.c
new file mode 100644
index 0000000..b2dfddd
--- /dev/null
+++ b/docs/examples/pop3-multi.c
@@ -0,0 +1,143 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2014, 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 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.
+ *
+ ***************************************************************************/
+#include <stdio.h>
+#include <curl/curl.h>
+
+/* This is a simple example showing how to retrieve mail using libcurl's POP3
+ * capabilities. It builds on the smtp-mail.c example to demonstrate how to use
+ * libcurl's multi interface.
+ *
+ * Note that this example requires libcurl 7.20.0 or above.
+ */
+
+static struct timeval tvnow(void)
+{
+ struct timeval now;
+
+ /* time() returns the value of time in seconds since the epoch */
+ now.tv_sec = (long)time(NULL);
+ now.tv_usec = 0;
+
+ return now;
+}
+
+static long tvdiff(struct timeval newer, struct timeval older)
+{
+ return (newer.tv_sec - older.tv_sec) * 1000 +
+ (newer.tv_usec - older.tv_usec) / 1000;
+}
+
+int main(void)
+{
+ CURL *curl;
+ CURLM *mcurl;
+ int still_running = 1;
+ struct timeval mp_start;
+
+ curl_global_init(CURL_GLOBAL_DEFAULT);
+
+ curl = curl_easy_init();
+ if(!curl)
+ return 1;
+
+ mcurl = curl_multi_init();
+ if(!mcurl)
+ return 2;
+
+ /* Set username and password */
+ curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
+ curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
+
+ /* This will retreive message 1 from the user's mailbox */
+ curl_easy_setopt(curl, CURLOPT_URL, "pop3://pop.example.com/1");
+
+ /* Tell the multi stack about our easy handle */
+ curl_multi_add_handle(mcurl, curl);
+
+ /* Record the start time which we can use later */
+ mp_start = tvnow();
+
+ /* We start some action by calling perform right away */
+ curl_multi_perform(mcurl, &still_running);
+
+ while(still_running) {
+ struct timeval timeout;
+ fd_set fdread;
+ fd_set fdwrite;
+ fd_set fdexcep;
+ int maxfd = -1;
+ int rc;
+
+ long curl_timeo = -1;
+
+ /* Initialise the file descriptors */
+ 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(mcurl, &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(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd);
+
+ /* In a real-world program you OF COURSE check the return code of the
+ function calls. On success, the value of maxfd is guaranteed to be
+ greater or equal than -1. We call select(maxfd + 1, ...), specially in
+ case of (maxfd == -1), we call select(0, ...), which is basically equal
+ to sleep. */
+ rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
+
+ if(tvdiff(tvnow(), mp_start) > MULTI_PERFORM_HANG_TIMEOUT) {
+ fprintf(stderr,
+ "ABORTING: Since it seems that we would have run forever.\n");
+ break;
+ }
+
+ switch(rc) {
+ case -1: /* select error */
+ break;
+ case 0: /* timeout */
+ default: /* action */
+ curl_multi_perform(mcurl, &still_running);
+ break;
+ }
+ }
+
+ /* Always cleanup */
+ curl_multi_remove_handle(mcurl, curl);
+ curl_multi_cleanup(mcurl);
+ curl_easy_cleanup(curl);
+ curl_global_cleanup();
+
+ return 0;
+}
