1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
---
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
SPDX-License-Identifier: curl
Title: curl_pushheader_bynum
Section: 3
Source: libcurl
See-also:
- CURLMOPT_PUSHFUNCTION (3)
- curl_pushheader_byname (3)
---
# NAME
curl_pushheader_bynum - get a push header by index
# SYNOPSIS
~~~c
#include <curl/curl.h>
char *curl_pushheader_bynum(struct curl_pushheaders *h, size_t num);
~~~
# DESCRIPTION
This is a function that is only functional within a
CURLMOPT_PUSHFUNCTION(3) 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 **num**, 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.
# EXAMPLE
~~~c
/* 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);
}
~~~
# AVAILABILITY
Added in 7.44.0
# RETURN VALUE
Returns a pointer to the header field content or NULL.
|
