Created
April 8, 2019 19:21
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#include <string.h> | |
#include <assert.h> | |
#include <curl/curl.h> | |
fd_set wfds; | |
fd_set rfds; | |
struct timeval tv; | |
int maxfd = 0; | |
int socket_callback(CURL *easy, /* easy handle */ | |
curl_socket_t s, /* socket */ | |
int what, /* describes the socket */ | |
void *userp, /* private callback pointer */ | |
void *socketp) /* private socket pointer */ | |
{ | |
FD_CLR(s, &wfds); | |
FD_CLR(s, &rfds); | |
if (what == CURL_POLL_IN || what == CURL_POLL_INOUT) { | |
FD_SET(s, &rfds); | |
} | |
if (what == CURL_POLL_OUT || what == CURL_POLL_INOUT) { | |
FD_SET(s, &wfds); | |
} | |
if (s > maxfd) { maxfd = s; } | |
return 0; | |
} | |
int timer_callback(CURLM *multi, /* multi handle */ | |
long timeout_ms, /* see above */ | |
void *userp) /* private callback pointer */ | |
{ | |
if (timeout_ms == -1) { | |
tv.tv_sec = 10; | |
tv.tv_usec = 0; | |
} else { | |
tv.tv_sec = timeout_ms / 1000; | |
tv.tv_usec = (timeout_ms % 1000) * 1000; | |
} | |
return 0; | |
} | |
size_t no_write(char *ptr, size_t size, size_t nmemb, void *userdata) { | |
return size * nmemb; | |
} | |
int main(int argc, char** argv) | |
{ | |
int running = 1; | |
curl_global_init(CURL_GLOBAL_ALL); | |
FD_ZERO(&wfds); | |
FD_ZERO(&rfds); | |
CURLM *multi = curl_multi_init(); | |
curl_multi_setopt(multi, CURLMOPT_SOCKETFUNCTION, socket_callback); | |
curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, timer_callback); | |
int j; | |
for (j = 0; j < 11; j++) { | |
CURL *easy = curl_easy_init(); | |
curl_easy_setopt(easy, CURLOPT_POST, 1); | |
curl_easy_setopt(easy, CURLOPT_POSTFIELDS, "0"); | |
curl_easy_setopt(easy, CURLOPT_URL, "https://home.xifon.eu/sleep/100"); | |
curl_easy_setopt(easy, CURLOPT_TIMEOUT_MS, 5000); | |
curl_easy_setopt(easy, CURLOPT_WRITEFUNCTION, no_write); | |
curl_easy_setopt(easy, CURLOPT_VERBOSE, 1); | |
curl_multi_add_handle(multi, easy); | |
tv.tv_sec = 0; | |
tv.tv_usec = 0; | |
running = 1; | |
while (running) { | |
if (tv.tv_sec == 0 && tv.tv_usec == 0) { | |
curl_multi_socket_action(multi, CURL_SOCKET_TIMEOUT, 0, &running); | |
} | |
fd_set crfds = rfds; | |
fd_set cwfds = wfds; | |
int count = select(maxfd+1, &crfds, &cwfds, NULL, &tv); | |
if (!count) { | |
curl_multi_socket_action(multi, CURL_SOCKET_TIMEOUT, 0, &running); | |
} | |
int i; | |
for (i = 0; i <= maxfd; i++) { | |
if (FD_ISSET(i, &crfds)) { | |
curl_multi_socket_action(multi, i, CURL_CSELECT_IN, &running); | |
} | |
if (FD_ISSET(i, &cwfds)) { | |
curl_multi_socket_action(multi, i, CURL_CSELECT_OUT, &running); | |
} | |
} | |
} | |
int msgq; | |
CURLMsg *message = curl_multi_info_read(multi, &msgq); | |
assert(msgq == 0); | |
if (message->data.result != CURLE_OK) { | |
fprintf(stderr, "ERROR %s\n", curl_easy_strerror(message->data.result)); | |
return 1; | |
} | |
curl_multi_remove_handle(multi, easy); | |
curl_easy_cleanup(easy); | |
} | |
curl_multi_cleanup(multi); | |
fprintf(stderr, "OK\n"); | |
return 0; | |
} |
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