NAME

CURLINFO_LOCAL_PORT - get the 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

This functionality affects quic and tcp

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

Added in curl 7.21.0

RETURN VALUE

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.