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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
71 lines
1.4 KiB
Markdown
71 lines
1.4 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: CURLOPT_PREREQDATA
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_PRIMARY_IP (3)
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- CURLINFO_PRIMARY_PORT (3)
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- CURLOPT_PREREQFUNCTION (3)
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Protocol:
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- All
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---
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# NAME
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CURLOPT_PREREQDATA - pointer passed to the pre-request callback
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PREREQDATA, void *pointer);
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~~~
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# DESCRIPTION
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Pass a *pointer* that is untouched by libcurl and passed as the first
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argument in the pre-request callback set with CURLOPT_PREREQFUNCTION(3).
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# DEFAULT
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NULL
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# EXAMPLE
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~~~c
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struct priv {
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void *custom;
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};
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static int prereq_callback(void *clientp,
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char *conn_primary_ip,
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char *conn_local_ip,
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int conn_primary_port,
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int conn_local_port)
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{
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printf("Connection made to %s:%d\n", conn_primary_ip, conn_primary_port);
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return CURL_PREREQFUNC_OK;
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}
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int main(void)
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{
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struct priv prereq_data;
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_PREREQFUNCTION, prereq_callback);
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curl_easy_setopt(curl, CURLOPT_PREREQDATA, &prereq_data);
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curl_easy_perform(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.80.0
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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