mirror of
https://github.com/curl/curl.git
synced 2024-12-27 06:59:43 +08:00
76 lines
2.5 KiB
Groff
76 lines
2.5 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 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
|
|
.\" *
|
|
.\" **************************************************************************
|
|
.TH curl_pushheader_bynum 3 "9 Jun 2023" "libcurl" "libcurl"
|
|
.SH NAME
|
|
curl_pushheader_bynum - get a push header by index
|
|
.SH SYNOPSIS
|
|
.nf
|
|
#include <curl/curl.h>
|
|
|
|
char *curl_pushheader_bynum(struct curl_pushheaders *h, size_t num);
|
|
.fi
|
|
.SH DESCRIPTION
|
|
This is a function that is only functional within a
|
|
\fICURLMOPT_PUSHFUNCTION(3)\fP callback. It makes no sense to try to use it
|
|
elsewhere and it has no function then.
|
|
|
|
It returns the value for the header field at the given index \fBnum\fP, for
|
|
the incoming server push request or NULL. The data pointed to is freed by
|
|
libcurl when this callback returns. The returned pointer points to a
|
|
"name:value" string that gets freed when this callback returns.
|
|
|
|
.SH EXAMPLE
|
|
.nf
|
|
/* output all the incoming push request headers */
|
|
static int push_cb(CURL *parent,
|
|
CURL *easy,
|
|
size_t num_headers,
|
|
struct curl_pushheaders *headers,
|
|
void *clientp)
|
|
{
|
|
int i = 0;
|
|
char *field;
|
|
do {
|
|
field = curl_pushheader_bynum(headers, i);
|
|
if(field)
|
|
fprintf(stderr, "Push header: %s\\n", field);
|
|
i++;
|
|
} while(field);
|
|
return CURL_PUSH_OK; /* permission granted */
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
CURLM *multi = curl_multi_init();
|
|
curl_multi_setopt(multi, CURLMOPT_PUSHFUNCTION, push_cb);
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Added in 7.44.0
|
|
.SH RETURN VALUE
|
|
Returns a pointer to the header field content or NULL.
|
|
.SH "SEE ALSO"
|
|
.BR CURLMOPT_PUSHFUNCTION (3),
|
|
.BR curl_pushheader_byname (3)
|