Files @ 317b82998a01
Branch filter:

Location: libtransport.git/msvc-deps/curl/docs/examples/multi-debugcallback.c - annotation

Vitaly Takmazov
Merge branch 'master' of https://github.com/hanzz/libtransport
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
8fbdd54451c0
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2011, 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.
 *
 ***************************************************************************/
/* This is an example showing the multi interface and the debug callback. */

#include <stdio.h>
#include <string.h>

/* somewhat unix-specific */
#include <sys/time.h>
#include <unistd.h>

/* curl stuff */
#include <curl/curl.h>

typedef char bool;
#define TRUE 1

static
void dump(const char *text,
          FILE *stream, unsigned char *ptr, size_t size,
          bool nohex)
{
  size_t i;
  size_t c;

  unsigned int width=0x10;

  if(nohex)
    /* without the hex output, we can fit more on screen */
    width = 0x40;

  fprintf(stream, "%s, %10.10ld bytes (0x%8.8lx)\n",
          text, (long)size, (long)size);

  for(i=0; i<size; i+= width) {

    fprintf(stream, "%4.4lx: ", (long)i);

    if(!nohex) {
      /* hex not disabled, show it */
      for(c = 0; c < width; c++)
        if(i+c < size)
          fprintf(stream, "%02x ", ptr[i+c]);
        else
          fputs("   ", stream);
    }

    for(c = 0; (c < width) && (i+c < size); c++) {
      /* check for 0D0A; if found, skip past and start a new line of output */
      if (nohex && (i+c+1 < size) && ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) {
        i+=(c+2-width);
        break;
      }
      fprintf(stream, "%c",
              (ptr[i+c]>=0x20) && (ptr[i+c]<0x80)?ptr[i+c]:'.');
      /* check again for 0D0A, to avoid an extra \n if it's at width */
      if (nohex && (i+c+2 < size) && ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) {
        i+=(c+3-width);
        break;
      }
    }
    fputc('\n', stream); /* newline */
  }
  fflush(stream);
}

static
int my_trace(CURL *handle, curl_infotype type,
             unsigned char *data, size_t size,
             void *userp)
{
  const char *text;

  (void)userp;
  (void)handle; /* prevent compiler warning */

  switch (type) {
  case CURLINFO_TEXT:
    fprintf(stderr, "== Info: %s", data);
  default: /* in case a new one is introduced to shock us */
    return 0;

  case CURLINFO_HEADER_OUT:
    text = "=> Send header";
    break;
  case CURLINFO_DATA_OUT:
    text = "=> Send data";
    break;
  case CURLINFO_HEADER_IN:
    text = "<= Recv header";
    break;
  case CURLINFO_DATA_IN:
    text = "<= Recv data";
    break;
  }

  dump(text, stderr, data, size, TRUE);
  return 0;
}

/*
 * Simply download a HTTP file.
 */
int main(void)
{
  CURL *http_handle;
  CURLM *multi_handle;

  int still_running; /* keep number of running handles */

  http_handle = curl_easy_init();

  /* set the options (I left out a few, you'll get the point anyway) */
  curl_easy_setopt(http_handle, CURLOPT_URL, "http://www.example.com/");

  curl_easy_setopt(http_handle, CURLOPT_DEBUGFUNCTION, my_trace);
  curl_easy_setopt(http_handle, CURLOPT_VERBOSE, 1L);

  /* init a multi stack */
  multi_handle = curl_multi_init();

  /* add the individual transfers */
  curl_multi_add_handle(multi_handle, http_handle);

  /* we start some action by calling perform right away */
  curl_multi_perform(multi_handle, &still_running);

  do {
    struct timeval timeout;
    int rc; /* select() 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 */
    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.  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);

    switch(rc) {
    case -1:
      /* select error */
      still_running = 0;
      printf("select() returns error, this is badness\n");
      break;
    case 0:
    default:
      /* timeout or readable/writable sockets */
      curl_multi_perform(multi_handle, &still_running);
      break;
    }
  } while(still_running);

  curl_multi_cleanup(multi_handle);

  curl_easy_cleanup(http_handle);

  return 0;
}