lib504.c

THIS IS HTTP CURL Example

/*****************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * $Id: lib504.c,v 1.26 2007-10-02 16:05:28 yangtse Exp $
 */

#include "test.h"

#include <sys/types.h>

#include "testutil.h"

#define MAIN_LOOP_HANG_TIMEOUT     90 * 1000
#define MULTI_PERFORM_HANG_TIMEOUT 60 * 1000

/*
 * Source code in here hugely as reported in bug report 651464 by
 * Christopher R. Palmer.
 *
 * Use multi interface to get document over proxy with bad port number.
 * This caused the interface to "hang" in libcurl 7.10.2.
 */
int test(char *URL)
{
  CURL *c;
  int ret=0;
  CURLM *m;
  fd_set rd, wr, exc;
  CURLMcode res;
  char done = FALSE;
  int running;
  int max_fd;
  int rc;
  struct timeval ml_start;
  struct timeval mp_start;
  char ml_timedout = FALSE;
  char mp_timedout = FALSE;

  if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
    fprintf(stderr, "curl_global_init() failed\n");
    return TEST_ERR_MAJOR_BAD;
  }

  if ((c = curl_easy_init()) == NULL) {
    fprintf(stderr, "curl_easy_init() failed\n");
    curl_global_cleanup();
    return TEST_ERR_MAJOR_BAD;
  }

  /* the point here being that there must not run anything on the given
     proxy port */
  curl_easy_setopt(c, CURLOPT_PROXY, libtest_arg2);
  curl_easy_setopt(c, CURLOPT_URL, URL);
  curl_easy_setopt(c, CURLOPT_VERBOSE, 1);

  if ((m = curl_multi_init()) == NULL) {
    fprintf(stderr, "curl_multi_init() failed\n");
    curl_easy_cleanup(c);
    curl_global_cleanup();
    return TEST_ERR_MAJOR_BAD;
  }

  if ((res = curl_multi_add_handle(m, c)) != CURLM_OK) {
    fprintf(stderr, "curl_multi_add_handle() failed, "
            "with code %d\n", res);
    curl_multi_cleanup(m);
    curl_easy_cleanup(c);
    curl_global_cleanup();
    return TEST_ERR_MAJOR_BAD;
  }

  ml_timedout = FALSE;
  ml_start = tutil_tvnow();

  while (!done) {
    struct timeval interval;

    interval.tv_sec = 1;
    interval.tv_usec = 0;

    if (tutil_tvdiff(tutil_tvnow(), ml_start) >
        MAIN_LOOP_HANG_TIMEOUT) {
      ml_timedout = TRUE;
      break;
    }
    mp_timedout = FALSE;
    mp_start = tutil_tvnow();

    fprintf(stderr, "curl_multi_perform()\n");

    res = CURLM_CALL_MULTI_PERFORM;

    while (res == CURLM_CALL_MULTI_PERFORM) {
      res = curl_multi_perform(m, &running);
      if (tutil_tvdiff(tutil_tvnow(), mp_start) >
          MULTI_PERFORM_HANG_TIMEOUT) {
        mp_timedout = TRUE;
        break;
      }
    }
    if (mp_timedout)
      break;

    if(!running) {
      /* This is where this code is expected to reach */
      int numleft;
      CURLMsg *msg = curl_multi_info_read(m, &numleft);
      fprintf(stderr, "Expected: not running\n");
      if(msg && !numleft)
        ret = 100; /* this is where we should be */
      else
        ret = 99; /* not correct */
      break;
    }
    fprintf(stderr, "running == %d, res == %d\n", running, res);

    if (res != CURLM_OK) {
      ret = 2;
      break;
    }

    FD_ZERO(&rd);
    FD_ZERO(&wr);
    FD_ZERO(&exc);
    max_fd = 0;

    fprintf(stderr, "curl_multi_fdset()\n");
    if (curl_multi_fdset(m, &rd, &wr, &exc, &max_fd) != CURLM_OK) {
      fprintf(stderr, "unexpected failured of fdset.\n");
      ret = 3;
      break;
    }
    rc = select_test(max_fd+1, &rd, &wr, &exc, &interval);
    fprintf(stderr, "select returned %d\n", rc);
  }

  if (ml_timedout || mp_timedout) {
    if (ml_timedout) fprintf(stderr, "ml_timedout\n");
    if (mp_timedout) fprintf(stderr, "mp_timedout\n");
    fprintf(stderr, "ABORTING TEST, since it seems "
            "that it would have run forever.\n");
    ret = TEST_ERR_RUNS_FOREVER;
  }

  curl_multi_remove_handle(m, c);
  curl_easy_cleanup(c);
  curl_multi_cleanup(m);
  curl_global_cleanup();

  return ret;
}