#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <curl/curl.h>
int main(void)
{
CURL *curl;
CURLM *multi_handle;
int still_running = 0;
curl_mime *form = NULL;
curl_mimepart *field = NULL;
struct curl_slist *headerlist = NULL;
static const char buf[] = "Expect:";
curl = curl_easy_init();
multi_handle = curl_multi_init();
if(curl && multi_handle) {
form = curl_mime_init(curl);
field = curl_mime_addpart(form);
curl_mime_name(field, "sendfile");
curl_mime_filedata(field, "multi-post.c");
field = curl_mime_addpart(form);
curl_mime_name(field, "filename");
curl_mime_data(field, "multi-post.c", CURL_ZERO_TERMINATED);
field = curl_mime_addpart(form);
curl_mime_name(field, "submit");
curl_mime_data(field, "send", CURL_ZERO_TERMINATED);
headerlist = curl_slist_append(headerlist, buf);
curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/upload.cgi");
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
curl_easy_setopt(curl, CURLOPT_MIMEPOST, form);
curl_multi_add_handle(multi_handle, curl);
curl_multi_perform(multi_handle, &still_running);
while(still_running) {
struct timeval timeout;
int rc;
CURLMcode mc;
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);
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;
}
mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
if(mc != CURLM_OK) {
fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
break;
}
if(maxfd == -1) {
#ifdef _WIN32
Sleep(100);
rc = 0;
#else
struct timeval wait = { 0, 100 * 1000 };
rc = select(0, NULL, NULL, NULL, &wait);
#endif
}
else {
rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
}
switch(rc) {
case -1:
break;
case 0:
default:
printf("perform!\n");
curl_multi_perform(multi_handle, &still_running);
printf("running: %d!\n", still_running);
break;
}
}
curl_multi_cleanup(multi_handle);
curl_easy_cleanup(curl);
curl_mime_free(form);
curl_slist_free_all(headerlist);
}
return 0;
}