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
70
71
72
73
74
75
76
77
|
---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: CURLINFO_LOCAL_PORT
Section: 3
Source: libcurl
Protocol:
- TCP
- QUIC
See-also:
- CURLINFO_LOCAL_IP (3)
- CURLINFO_PRIMARY_PORT (3)
- curl_easy_getinfo (3)
- curl_easy_setopt (3)
Added-in: 7.21.0
---
# NAME
CURLINFO_LOCAL_PORT - latest local port number
# SYNOPSIS
~~~c
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LOCAL_PORT, long *portp);
~~~
# DESCRIPTION
Pass a pointer to a long to receive the local port number of the most recent
connection done with this **curl** handle.
If the connection was done using QUIC, the port number is a UDP port number,
otherwise it is a TCP port number.
If no connection was established or if the protocol does not use ports, -1
is returned.
# %PROTOCOLS%
# EXAMPLE
~~~c
int main(void)
{
CURL *curl;
CURLcode result;
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
result = curl_easy_perform(curl);
if(result == CURLE_OK) {
long port;
result = curl_easy_getinfo(curl, CURLINFO_LOCAL_PORT, &port);
if(result == CURLE_OK) {
printf("We used local port: %ld\n", port);
}
}
curl_easy_cleanup(curl);
}
return 0;
}
~~~
# %AVAILABILITY%
# RETURN VALUE
curl_easy_getinfo(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
libcurl-errors(3).
|
