fixed include and added header
[platform/upstream/curl.git] / docs / examples / multi-double.c
1 /*****************************************************************************
2  *                                  _   _ ____  _     
3  *  Project                     ___| | | |  _ \| |    
4  *                             / __| | | | |_) | |    
5  *                            | (__| |_| |  _ <| |___ 
6  *                             \___|\___/|_| \_\_____|
7  *
8  * $Id$
9  *
10  * This is a very simple example using the multi interface.
11  */
12
13 #include <stdio.h>
14 #include <string.h>
15
16 /* somewhat unix-specific */
17 #include <sys/time.h>
18 #include <unistd.h>
19
20 /* curl stuff */
21 #include <curl/curl.h>
22
23 /*
24  * Simply download two HTTP files!
25  */
26 int main(int argc, char **argv)
27 {
28   CURL *http_handle;
29   CURL *http_handle2;
30   CURLM *multi_handle;
31
32   int still_running; /* keep number of running handles */
33
34   http_handle = curl_easy_init();
35   http_handle2 = curl_easy_init();
36
37   /* set options */
38   curl_easy_setopt(http_handle, CURLOPT_URL, "http://www.haxx.se/");
39
40   /* set options */
41   curl_easy_setopt(http_handle2, CURLOPT_URL, "http://localhost/");
42
43   /* init a multi stack */
44   multi_handle = curl_multi_init();
45
46   /* add the individual transfers */
47   curl_multi_add_handle(multi_handle, http_handle);
48   curl_multi_add_handle(multi_handle, http_handle2);
49
50   /* we start some action by calling perform right away */
51   while(CURLM_CALL_MULTI_PERFORM ==
52         curl_multi_perform(multi_handle, &still_running));
53
54   while(still_running) {
55     struct timeval timeout;
56     int rc; /* select() return code */
57
58     fd_set fdread;
59     fd_set fdwrite;
60     fd_set fdexcep;
61     int maxfd;
62
63     FD_ZERO(&fdread);
64     FD_ZERO(&fdwrite);
65     FD_ZERO(&fdexcep);
66
67     /* set a suitable timeout to play around with */
68     timeout.tv_sec = 1;
69     timeout.tv_usec = 0;
70
71     /* get file descriptors from the transfers */
72     curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
73
74     rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
75
76     switch(rc) {
77     case -1:
78       /* select error */
79       break;
80     case 0:
81     default:
82       /* timeout or readable/writable sockets */
83       curl_multi_perform(multi_handle, &still_running);
84       break;
85     }
86   }
87
88   curl_multi_cleanup(multi_handle);
89
90   curl_easy_cleanup(http_handle);
91   curl_easy_cleanup(http_handle2);
92
93   return 0;
94 }