curl/docs/libcurl/opts/CURLINFO_PRIMARY_PORT.3
Daniel Stenberg f98344c4ae
man pages: simplify the .TH sections
- remove the version numbers
- simplify the texts

The date and version number will be put there for releases when maketgz
runs the updatemanpages.pl script.

Closes #11029
2023-04-26 10:17:13 +02:00

66 lines
2.3 KiB
Groff

.\" **************************************************************************
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.\" * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" * you should have received as part of this distribution. The terms
.\" * are also available at https://curl.se/docs/copyright.html.
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.\" * copies of the Software, and permit persons to whom the Software is
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.\"
.TH CURLINFO_PRIMARY_PORT 3 "12 Sep 2015" libcurl libcurl
.SH NAME
CURLINFO_PRIMARY_PORT \- get the latest destination port number
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PRIMARY_PORT, long *portp);
.fi
.SH DESCRIPTION
Pass a pointer to a long to receive the destination port of the most recent
connection done with this \fBcurl\fP handle.
This is the destination port of the actual TCP or UDP connection libcurl used.
If a proxy was used for the most recent transfer, this is the port number of
the proxy, if no proxy was used it is the port number of the most recently
accessed URL.
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
res = curl_easy_perform(curl);
if(res == CURLE_OK) {
long port;
res = curl_easy_getinfo(curl, CURLINFO_PRIMARY_PORT, &port);
if(!res)
printf("Connected to remote port: %ld\\n", port);
}
curl_easy_cleanup(curl);
}
.fi
.SH AVAILABILITY
Added in 7.21.0
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), "