curl/docs/libcurl/opts/CURLINFO_LOCAL_PORT.md
Daniel Stenberg 8442c24c9a
CURLINFO: remove 'get' and 'get the' from each short desc
The short descriptions describe the data each info retrieves. The info
itself does not 'get' the data.

This simplifies and shortens the descriptions and make them more
consistent.

Closes #19406
2025-11-08 17:05:55 +01:00

1.4 KiB

c SPDX-License-Identifier Title Section Source Protocol See-also Added-in
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. curl CURLINFO_LOCAL_PORT 3 libcurl
TCP
QUIC
CURLINFO_LOCAL_IP (3)
CURLINFO_PRIMARY_PORT (3)
curl_easy_getinfo (3)
curl_easy_setopt (3)
7.21.0

NAME

CURLINFO_LOCAL_PORT - latest local port number

SYNOPSIS

#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.

%PROTOCOLS%

EXAMPLE

int main(void)
{
  CURL *curl;
  CURLcode res;

  curl = curl_easy_init();
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
    res = curl_easy_perform(curl);

    if(CURLE_OK == res) {
      long port;
      res = curl_easy_getinfo(curl, CURLINFO_LOCAL_PORT, &port);

      if(CURLE_OK == res) {
        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).