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e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
86 lines
1.7 KiB
Markdown
86 lines
1.7 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLMOPT_PUSHDATA
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Section: 3
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Source: libcurl
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See-also:
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- CURLMOPT_PIPELINING (3)
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- CURLMOPT_PUSHFUNCTION (3)
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- CURLOPT_PIPEWAIT (3)
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- RFC 7540
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Protocol:
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- HTTP
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---
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# NAME
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CURLMOPT_PUSHDATA - pointer to pass to push callback
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_PUSHDATA, void *pointer);
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~~~
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# DESCRIPTION
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Set a *pointer* to pass as the last argument to the
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CURLMOPT_PUSHFUNCTION(3) callback. The pointer is not touched or used by
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libcurl itself, only passed on to the callback function.
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# DEFAULT
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NULL
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# EXAMPLE
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~~~c
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#include <string.h>
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/* only allow pushes for filenames starting with "push-" */
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int push_callback(CURL *parent,
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CURL *easy,
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size_t num_headers,
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struct curl_pushheaders *headers,
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void *clientp)
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{
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char *headp;
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int *transfers = (int *)clientp;
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FILE *out;
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headp = curl_pushheader_byname(headers, ":path");
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if(headp && !strncmp(headp, "/push-", 6)) {
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fprintf(stderr, "The PATH is %s\n", headp);
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/* save the push here */
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out = fopen("pushed-stream", "wb");
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/* write to this file */
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curl_easy_setopt(easy, CURLOPT_WRITEDATA, out);
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(*transfers)++; /* one more */
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return CURL_PUSH_OK;
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}
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return CURL_PUSH_DENY;
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}
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int main(void)
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{
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int counter;
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CURLM *multi = curl_multi_init();
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curl_multi_setopt(multi, CURLMOPT_PUSHFUNCTION, push_callback);
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curl_multi_setopt(multi, CURLMOPT_PUSHDATA, &counter);
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}
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~~~
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# AVAILABILITY
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Added in 7.44.0
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# RETURN VALUE
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Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
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