/***************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * $Id$ * * This is a very simple example using the multi interface. */ #include <stdio.h> #include <string.h> /* somewhat unix-specific */ #include <sys/time.h> #include <unistd.h> /* curl stuff */ #include <curl/curl.h> /* * Simply download a HTTP file. */ int main(int argc, char **argv) { 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.haxx.se/"); /* 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 */ while(CURLM_CALL_MULTI_PERFORM == curl_multi_perform(multi_handle, &still_running)); while(still_running) { struct timeval timeout; int rc; /* select() return code */ fd_set fdread; fd_set fdwrite; fd_set fdexcep; int maxfd; 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; /* 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, *and* you make sure that maxfd is bigger than -1 so that the call to select() below makes sense! */ 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 */ while(CURLM_CALL_MULTI_PERFORM == curl_multi_perform(multi_handle, &still_running)); break; } } curl_multi_cleanup(multi_handle); curl_easy_cleanup(http_handle); return 0; }