12  * are also available at https://curl.se/docs/copyright.html.
21  * SPDX-License-Identifier: curl
29 /* curl stuff */
31 #include <curl/curl.h>
43 static CURLcode ping(CURL *curl, const char *send_payload)  in ping()  argument
47     curl_ws_send(curl, send_payload, strlen(send_payload), &sent, 0,  in ping()
55 static CURLcode recv_pong(CURL *curl, const char *expected_payload)  in recv_pong()  argument
60   CURLcode result = curl_ws_recv(curl, buffer, sizeof(buffer), &rlen, &meta);  in recv_pong()
84 static void websocket_close(CURL *curl)  in websocket_close()  argument
88     curl_ws_send(curl, "", 0, &sent, 0, CURLWS_CLOSE);  in websocket_close()
93 static CURLcode pingpong(CURL *curl, const char *payload)  in pingpong()  argument
98   res = ping(curl, payload);  in pingpong()
103     res = recv_pong(curl, payload);  in pingpong()
108     websocket_close(curl);  in pingpong()
111   websocket_close(curl);  in pingpong()
120   CURL *curl;  in main()  local
133   curl = curl_easy_init();  in main()
134   if(curl) {  in main()
135     curl_easy_setopt(curl, CURLOPT_URL, url);  in main()
138     curl_easy_setopt(curl, CURLOPT_USERAGENT, "ws-pingpong");  in main()
139     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);  in main()
140     curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 2L); /* websocket style */  in main()
141     res = curl_easy_perform(curl);  in main()
144       res = pingpong(curl, payload);  in main()
147     curl_easy_cleanup(curl);  in main()