--- /dev/null
+<testcase>
+<info>
+<keywords>
+WebSockets
+</keywords>
+</info>
+
+#
+# Sends a PING + a 5 byte hello TEXT
+<reply>
+<data nocheck="yes" nonewline="yes">
+HTTP/1.1 101 Switching to WebSockets swsclose\r
+Server: test-server/fake\r
+Upgrade: websocket\r
+Connection: Upgrade\r
+Something: else\r
+Sec-WebSocket-Accept: HkPsVga7+8LuxM4RGQ5p9tZHeYs=\r
+\r
+%hex[%89%00%81%05hello]hex%
+</data>
+# allow upgrade
+<servercmd>
+upgrade
+</servercmd>
+</reply>
+
+#
+# Client-side
+<client>
+# require debug for the forced CURL_ENTROPY
+<features>
+debug
+ws
+</features>
+<server>
+http
+</server>
+<name>
+WebSockets curl_ws_recv() with closed connection
+</name>
+<tool>
+lib%TESTNUMBER
+</tool>
+<command>
+ws://%HOSTIP:%HTTPPORT/%TESTNUMBER
+</command>
+</client>
+
+#
+# PONG with no data and the 32 bit mask
+#
+<verify>
+<protocol nocheck="yes" crlf="yes">
+GET /%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+User-Agent: websocket/2304
+Accept: */*
+Upgrade: websocket
+Connection: Upgrade
+Sec-WebSocket-Version: 13
+Sec-WebSocket-Key: NDMyMTUzMjE2MzIxNzMyMQ==
+
+</protocol>
+<stdout mode="text">
+Connection closed
+</stdout>
+</verify>
+</testcase>
--- /dev/null
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include "test.h"
+
+#ifdef USE_WEBSOCKETS
+
+static int ping(CURL *curl, const char *send_payload)
+{
+ size_t sent;
+ CURLcode result =
+ curl_ws_send(curl, send_payload, strlen(send_payload), &sent, 0,
+ CURLWS_PING);
+ fprintf(stderr,
+ "ws: curl_ws_send returned %u, sent %u\n", (int)result, (int)sent);
+
+ return (int)result;
+}
+
+static int recv_pong(CURL *curl, const char *exected_payload)
+{
+ size_t rlen;
+ struct curl_ws_frame *meta;
+ char buffer[256];
+ CURLcode result = curl_ws_recv(curl, buffer, sizeof(buffer), &rlen, &meta);
+ if(!result) {
+ if(meta->flags & CURLWS_PONG) {
+ int same = 0;
+ fprintf(stderr, "ws: got PONG back\n");
+ if(rlen == strlen(exected_payload)) {
+ if(!memcmp(exected_payload, buffer, rlen)) {
+ fprintf(stderr, "ws: got the same payload back\n");
+ same = 1;
+ }
+ }
+ if(!same)
+ fprintf(stderr, "ws: did NOT get the same payload back\n");
+ }
+ else {
+ fprintf(stderr, "recv_pong: got %u bytes rflags %x\n", (int)rlen,
+ meta->flags);
+ }
+ }
+ fprintf(stderr, "ws: curl_ws_recv returned %u, received %u\n", (int)result,
+ rlen);
+ return (int)result;
+}
+
+/* just close the connection */
+static void websocket_close(CURL *curl)
+{
+ size_t sent;
+ CURLcode result =
+ curl_ws_send(curl, "", 0, &sent, 0, CURLWS_CLOSE);
+ fprintf(stderr,
+ "ws: curl_ws_send returned %u, sent %u\n", (int)result, (int)sent);
+}
+
+static void websocket(CURL *curl)
+{
+ int i = 0;
+ fprintf(stderr, "ws: websocket() starts\n");
+ do {
+ fprintf(stderr, "Send ping\n");
+ if(ping(curl, "foobar"))
+ return;
+ fprintf(stderr, "Receive pong\n");
+ if(recv_pong(curl, "foobar")) {
+ printf("Connection closed\n");
+ return;
+ }
+ sleep(2);
+ } while(i++ < 10);
+ websocket_close(curl);
+}
+
+int test(char *URL)
+{
+ CURL *curl;
+ CURLcode res = CURLE_OK;
+
+ global_init(CURL_GLOBAL_ALL);
+
+ curl = curl_easy_init();
+ if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, URL);
+
+ /* use the callback style */
+ curl_easy_setopt(curl, CURLOPT_USERAGENT, "websocket/2304");
+ curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+ curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 2L); /* websocket style */
+ res = curl_easy_perform(curl);
+ fprintf(stderr, "curl_easy_perform() returned %u\n", (int)res);
+ if(res == CURLE_OK)
+ websocket(curl);
+
+ /* always cleanup */
+ curl_easy_cleanup(curl);
+ }
+ curl_global_cleanup();
+ return (int)res;
+}
+
+#else
+NO_SUPPORT_BUILT_IN
+#endif