pool->timeout = ecalloc(1, sizeof(struct event));
curl_multi_setopt(pool->ch, CURLMOPT_SOCKETDATA, pool);
curl_multi_setopt(pool->ch, CURLMOPT_SOCKETFUNCTION, http_request_pool_socket_callback);
pool->timeout = ecalloc(1, sizeof(struct event));
curl_multi_setopt(pool->ch, CURLMOPT_SOCKETDATA, pool);
curl_multi_setopt(pool->ch, CURLMOPT_SOCKETFUNCTION, http_request_pool_socket_callback);