69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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/* <DESC>
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* WebSocket download-only using write callback
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* </DESC>
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*/
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#include <stdio.h>
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#include <curl/curl.h>
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static size_t writecb(char *b, size_t size, size_t nitems, void *p)
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{
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CURL *easy = p;
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size_t i;
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const struct curl_ws_frame *frame = curl_ws_meta(easy);
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fprintf(stderr, "Type: %s\n", frame->flags & CURLWS_BINARY ?
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"binary" : "text");
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fprintf(stderr, "Bytes: %u", (unsigned int)(nitems * size));
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for(i = 0; i < nitems; i++)
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fprintf(stderr, "%02x ", (unsigned char)b[i]);
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return nitems;
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}
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int main(void)
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{
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CURL *curl;
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CURLcode res;
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curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "wss://example.com");
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writecb);
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/* pass the easy handle to the callback */
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, curl);
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/* Perform the request, res gets the return code */
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res = curl_easy_perform(curl);
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/* Check for errors */
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if(res != CURLE_OK)
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fprintf(stderr, "curl_easy_perform() failed: %s\n",
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curl_easy_strerror(res));
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/* always cleanup */
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curl_easy_cleanup(curl);
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}
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return 0;
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}
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