when i init the multi_curl and one easy_curl, i set
CURLMOPT_SOCKETFUNCTION,and add easy_curl to the mult_curl, and i call
"curl_multi_socket_action(multi_handle, CURL_SOCKET_TIMEOUT, 0,
 &still_running)" , the program core . why????
==============================================================================================

    curl_multi_setopt(multi_handle, CURLMOPT_SOCKETFUNCTION, multi_sock_cb);
    curl_multi_setopt(multi_handle, CURLMOPT_SOCKETDATA, cb_data);
    curl_easy_setopt(easy_curl, CURLOPT_URL, url.c_str());
    curl_easy_setopt(easy_curl, CURLOPT_WRITEFUNCTION, &http_get_callback);
    curl_easy_setopt(easy_curl, CURLOPT_WRITEDATA, pResponse);

    CURLMcode rc;
    rc = curl_multi_add_handle(multi_handle, easy_curl);
    if ( CURLM_OK != rc ) {
        ERROR("curl_multi_add_handle failed");
        return -1;
    }
    int still_running;
    return CURLM_OK == curl_multi_socket_action(multi_handle,
CURL_SOCKET_TIMEOUT, 0, &still_running) ? 0 : -1; //core at this.

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Received on 2012-11-04