12  * are also available at https://curl.se/docs/copyright.html.
21  * SPDX-License-Identifier: curl
31 #include <curl/curl.h>
33 static int ping(CURL *curl, const char *send_payload)  in ping()  argument
37     curl_ws_send(curl, send_payload, strlen(send_payload), &sent, 0,  in ping()
42 static int recv_pong(CURL *curl, const char *expected_payload)  in recv_pong()  argument
47   CURLcode result = curl_ws_recv(curl, buffer, sizeof(buffer), &rlen, &meta);  in recv_pong()
71 static int recv_any(CURL *curl)  in recv_any()  argument
76   CURLcode result = curl_ws_recv(curl, buffer, sizeof(buffer), &rlen, &meta);  in recv_any()
84 static void websocket_close(CURL *curl)  in websocket_close()  argument
87   (void)curl_ws_send(curl, "", 0, &sent, 0, CURLWS_CLOSE);  in websocket_close()
90 static void websocket(CURL *curl)  in websocket()  argument
94     recv_any(curl);  in websocket()
95     if(ping(curl, "foobar"))  in websocket()
97     if(recv_pong(curl, "foobar")) {  in websocket()
102   websocket_close(curl);  in websocket()
107   CURL *curl;  in main()  local
110   curl = curl_easy_init();  in main()
111   if(curl) {  in main()
112     curl_easy_setopt(curl, CURLOPT_URL, "wss://example.com");  in main()
114     curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 2L); /* websocket style */  in main()
117     res = curl_easy_perform(curl);  in main()
124       websocket(curl);  in main()
128     curl_easy_cleanup(curl);  in main()