mirror of
https://github.com/curl/curl.git
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130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/*****************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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*
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* This is an example application source code using the multi interface
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* to do a multipart formpost without "blocking".
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*/
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#include <stdio.h>
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#include <string.h>
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#include <sys/time.h>
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#include <curl/curl.h>
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int main(int argc, char *argv[])
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{
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CURL *curl;
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CURLM *multi_handle;
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int still_running;
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struct curl_httppost *formpost=NULL;
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struct curl_httppost *lastptr=NULL;
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struct curl_slist *headerlist=NULL;
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static const char buf[] = "Expect:";
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/* Fill in the file upload field. This makes libcurl load data from
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the given file name when curl_easy_perform() is called. */
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curl_formadd(&formpost,
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&lastptr,
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CURLFORM_COPYNAME, "sendfile",
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CURLFORM_FILE, "postit2.c",
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CURLFORM_END);
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/* Fill in the filename field */
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curl_formadd(&formpost,
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&lastptr,
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CURLFORM_COPYNAME, "filename",
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CURLFORM_COPYCONTENTS, "postit2.c",
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CURLFORM_END);
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/* Fill in the submit field too, even if this is rarely needed */
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curl_formadd(&formpost,
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&lastptr,
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CURLFORM_COPYNAME, "submit",
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CURLFORM_COPYCONTENTS, "send",
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CURLFORM_END);
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curl = curl_easy_init();
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multi_handle = curl_multi_init();
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/* initalize custom header list (stating that Expect: 100-continue is not
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wanted */
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headerlist = curl_slist_append(headerlist, buf);
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if(curl && multi_handle) {
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/* what URL that receives this POST */
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curl_easy_setopt(curl, CURLOPT_URL,
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"http://www.fillinyoururl.com/upload.cgi");
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curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
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curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
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curl_multi_add_handle(multi_handle, curl);
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while(CURLM_CALL_MULTI_PERFORM ==
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curl_multi_perform(multi_handle, &still_running));
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while(still_running) {
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struct timeval timeout;
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int rc; /* select() return code */
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fd_set fdread;
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fd_set fdwrite;
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fd_set fdexcep;
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int maxfd = -1;
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FD_ZERO(&fdread);
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FD_ZERO(&fdwrite);
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FD_ZERO(&fdexcep);
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/* set a suitable timeout to play around with */
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timeout.tv_sec = 1;
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timeout.tv_usec = 0;
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/* get file descriptors from the transfers */
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curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
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/* In a real-world program you OF COURSE check the return code of the
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function calls. On success, the value of maxfd is guaranteed to be
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greater or equal than -1. We call select(maxfd + 1, ...), specially in
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case of (maxfd == -1), we call select(0, ...), which is basically equal
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to sleep. */
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rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
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switch(rc) {
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case -1:
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/* select error */
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break;
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case 0:
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printf("timeout!\n");
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default:
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/* timeout or readable/writable sockets */
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printf("perform!\n");
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while(CURLM_CALL_MULTI_PERFORM ==
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curl_multi_perform(multi_handle, &still_running));
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printf("running: %d!\n", still_running);
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break;
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}
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}
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curl_multi_cleanup(multi_handle);
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/* always cleanup */
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curl_easy_cleanup(curl);
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/* then cleanup the formpost chain */
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curl_formfree(formpost);
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/* free slist */
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curl_slist_free_all (headerlist);
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}
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return 0;
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}
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