使用libcurl实现udp通信

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使用libcurl实现udp通信，网络另一端为192.168.31.199:6000，发送数据为hello xujun

#include <curl/curl.h>#include <string.h>//#include <sys/socket.h>curl_socket_t opensocket (void *clientp,                            curlsocktype purpose,                            struct curl_sockaddr *address){address->socktype = SOCK_DGRAM;//address->protocol = IPPROTO_UDP;address->protocol = 0;return socket(address->family, address->socktype, address->protocol);}int main(){CURLcode res = 0;CURL *curl = NULL;const char *request = "hello xujun\n";size_t iolen;curl = curl_easy_init();if(curl){curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, opensocket);curl_easy_setopt(curl, CURLOPT_URL, "192.168.31.199:6000");curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);res = curl_easy_perform(curl);long sockextr;curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockextr);//curl_easy_send & curl_easy_recv herecurl_easy_send(curl, request, strlen(request), &iolen);curl_easy_cleanup(curl);}return 0;}

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