mirror of
https://github.com/curl/curl.git
synced 2024-11-27 05:50:21 +08:00
133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/*****************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* $Id$
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*
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* This is an example application source code using the multi interface.
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*/
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#include <stdio.h>
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#include <string.h>
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/* somewhat unix-specific */
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#include <sys/time.h>
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#include <unistd.h>
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/* curl stuff */
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#include <curl/curl.h>
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/*
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* Download a HTTP file and upload an FTP file simultaneously.
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*/
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#define HANDLECOUNT 2 /* Number of simultaneous transfers */
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#define HTTP_HANDLE 0 /* Index for the HTTP transfer */
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#define FTP_HANDLE 1 /* Index for the FTP transfer */
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int main(int argc, char **argv)
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{
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CURL *handles[HANDLECOUNT];
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CURLM *multi_handle;
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int still_running; /* keep number of running handles */
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int i;
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CURLMsg *msg; /* for picking up messages with the transfer status */
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int msgs_left; /* how many messages are left */
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/* Allocate one CURL handle per transfer */
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for (i=0; i<HANDLECOUNT; i++)
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handles[i] = curl_easy_init();
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/* set the options (I left out a few, you'll get the point anyway) */
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curl_easy_setopt(handles[HTTP_HANDLE], CURLOPT_URL, "http://website.com");
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curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_URL, "ftp://ftpsite.com");
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curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_UPLOAD, 1L);
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/* init a multi stack */
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multi_handle = curl_multi_init();
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/* add the individual transfers */
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for (i=0; i<HANDLECOUNT; i++)
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curl_multi_add_handle(multi_handle, handles[i]);
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/* we start some action by calling perform right away */
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while(CURLM_CALL_MULTI_PERFORM ==
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curl_multi_perform(multi_handle, &still_running));
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while(still_running) {
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struct timeval timeout;
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int rc; /* select() return code */
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fd_set fdread;
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fd_set fdwrite;
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fd_set fdexcep;
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int maxfd;
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FD_ZERO(&fdread);
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FD_ZERO(&fdwrite);
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FD_ZERO(&fdexcep);
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/* set a suitable timeout to play around with */
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timeout.tv_sec = 1;
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timeout.tv_usec = 0;
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/* get file descriptors from the transfers */
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curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
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/* In a real-world program you OF COURSE check the return code of the
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function calls, *and* you make sure that maxfd is bigger than -1 so
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that the call to select() below makes sense! */
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rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
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switch(rc) {
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case -1:
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/* select error */
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break;
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case 0:
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/* timeout, do something else */
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break;
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default:
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/* one or more of curl's file descriptors say there's data to read
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or write */
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while(CURLM_CALL_MULTI_PERFORM ==
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curl_multi_perform(multi_handle, &still_running));
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break;
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}
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}
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/* See how the transfers went */
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while ((msg = curl_multi_info_read(multi_handle, &msgs_left))) {
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if (msg->msg == CURLMSG_DONE) {
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int idx, found = 0;
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/* Find out which handle this message is about */
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for (idx=0; (!found && (idx<HANDLECOUNT)); idx++) found = (msg->easy_handle == handles[idx]);
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switch (idx) {
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case HTTP_HANDLE:
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printf("HTTP transfer completed with status %d\n", msg->data.result);
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break;
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case FTP_HANDLE:
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printf("FTP transfer completed with status %d\n", msg->data.result);
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break;
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}
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}
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}
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curl_multi_cleanup(multi_handle);
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/* Free the CURL handles */
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for (i=0; i<HANDLECOUNT; i++)
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curl_easy_cleanup(handles[i]);
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return 0;
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}
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