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📄 10-at-a-time.c(4.24 KB)
📄 Makefile.example(1.86 KB)
📄 README.md(1.35 KB)
📄 altsvc.c(1.83 KB)
📄 anyauthput.c(4.82 KB)
📄 cacertinmem.c(7.14 KB)
📄 certinfo.c(2.25 KB)
📄 chkspeed.c(6.54 KB)
📄 cookie_interface.c(4.03 KB)
📄 crawler.c(6.53 KB)
📄 curlgtk.c(2.94 KB)
📄 curlx.c(16.41 KB)
📄 debug.c(4.21 KB)
📄 ephiperfifo.c(14.49 KB)
📄 evhiperfifo.c(11.9 KB)
📄 externalsocket.c(4.83 KB)
📄 fileupload.c(2.78 KB)
📄 fopen.c(13.87 KB)
📄 ftp-wildcard.c(4.15 KB)
📄 ftpget.c(2.59 KB)
📄 ftpgetinfo.c(2.86 KB)
📄 ftpgetresp.c(2.51 KB)
📄 ftpsget.c(2.89 KB)
📄 ftpupload.c(4.48 KB)
📄 ftpuploadfrommem.c(3.81 KB)
📄 ftpuploadresume.c(4.24 KB)
📄 getinfo.c(1.62 KB)
📄 getinmemory.c(3.24 KB)
📄 getredirect.c(2.3 KB)
📄 getreferrer.c(1.81 KB)
📄 ghiper.c(12.04 KB)
📄 hiperfifo.c(11.97 KB)
📄 href_extractor.c(2.61 KB)
📄 htmltidy.c(3.88 KB)
📄 htmltitle.cpp(6.23 KB)
📄 http-post.c(1.99 KB)
📄 http2-download.c(6.19 KB)
📄 http2-pushinmemory.c(5.02 KB)
📄 http2-serverpush.c(7.1 KB)
📄 http2-upload.c(8.05 KB)
📄 http3-present.c(1.53 KB)
📄 http3.c(1.81 KB)
📄 httpcustomheader.c(2.27 KB)
📄 httpput-postfields.c(3.36 KB)
📄 httpput.c(3.6 KB)
📄 https.c(2.53 KB)
📄 imap-append.c(3.77 KB)
📄 imap-authzid.c(2.21 KB)
📄 imap-copy.c(2.35 KB)
📄 imap-create.c(2.06 KB)
📄 imap-delete.c(2.06 KB)
📄 imap-examine.c(2.11 KB)
📄 imap-fetch.c(1.95 KB)
📄 imap-list.c(2.08 KB)
📄 imap-lsub.c(2.08 KB)
📄 imap-multi.c(2.29 KB)
📄 imap-noop.c(2 KB)
📄 imap-search.c(2.35 KB)
📄 imap-ssl.c(3.25 KB)
📄 imap-store.c(2.69 KB)
📄 imap-tls.c(3.5 KB)
📄 makefile.dj(1.58 KB)
📄 multi-app.c(3.36 KB)
📄 multi-debugcallback.c(4.21 KB)
📄 multi-double.c(2.62 KB)
📄 multi-event.c(6.01 KB)
📄 multi-formadd.c(3.23 KB)
📄 multi-legacy.c(5.13 KB)
📄 multi-post.c(3.04 KB)
📄 multi-single.c(2.49 KB)
📄 multi-uv.c(5.97 KB)
📄 multithread.c(2.59 KB)
📄 opensslthreadlock.c(2.69 KB)
📄 parseurl.c(2.13 KB)
📄 persistent.c(2.15 KB)
📄 pop3-authzid.c(2.18 KB)
📄 pop3-dele.c(2.15 KB)
📄 pop3-list.c(1.93 KB)
📄 pop3-multi.c(2.29 KB)
📄 pop3-noop.c(2.11 KB)
📄 pop3-retr.c(1.93 KB)
📄 pop3-ssl.c(3.22 KB)
📄 pop3-stat.c(2.13 KB)
📄 pop3-tls.c(3.47 KB)
📄 pop3-top.c(2.09 KB)
📄 pop3-uidl.c(2.03 KB)
📄 post-callback.c(5.15 KB)
📄 postinmemory.c(3.36 KB)
📄 postit2-formadd.c(3.51 KB)
📄 postit2.c(3.41 KB)
📄 progressfunc.c(4.8 KB)
📄 resolve.c(1.92 KB)
📄 rtsp.c(9.02 KB)
📄 sampleconv.c(3.25 KB)
📄 sendrecv.c(4.52 KB)
📄 sepheaders.c(2.67 KB)
📄 sessioninfo.c(3.06 KB)
📄 sftpget.c(3.25 KB)
📄 sftpuploadresume.c(3.82 KB)
📄 shared-connection-cache.c(2.51 KB)
📄 simple.c(1.68 KB)
📄 simplepost.c(1.83 KB)
📄 simplessl.c(4.56 KB)
📄 smooth-gtk-thread.c(6.01 KB)
📄 smtp-authzid.c(5.33 KB)
📄 smtp-expn.c(2.55 KB)
📄 smtp-mail.c(4.86 KB)
📄 smtp-mime.c(5.47 KB)
📄 smtp-multi.c(4.54 KB)
📄 smtp-ssl.c(5.75 KB)
📄 smtp-tls.c(6.21 KB)
📄 smtp-vrfy.c(2.62 KB)
📄 sslbackend.c(2.29 KB)
📄 synctime.c(12.6 KB)
📄 threaded-ssl.c(4.34 KB)
📄 url2file.c(2.43 KB)
📄 urlapi.c(1.98 KB)
📄 usercertinmem.c(8.87 KB)
📄 xmlstream.c(4.94 KB)

Editing: multi-legacy.c

/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2021, 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.
 *
 ***************************************************************************/
/* <DESC>
 * A basic application source code using the multi interface doing two
 * transfers in parallel without curl_multi_wait/poll.
 * </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;
}

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Editing: multi-legacy.c

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