romenskiy2012/curl

mirror of https://github.com/curl/curl.git synced 2026-05-14 23:26:21 +03:00

Make `port` member in these struct of type `uint16_t`.

add `uint8_t transport` to `struct ip_quadruple

Define TRNSPRT_NONE as 0. By assigning a valid transport only on a
successful connection, it is clear when the ip_quadruple members are
valid. Also, for transports not involving ports, the getinfos for
`CURLINFO_PRIMARY_PORT` and `CURLINFO_LOCAL_PORT` will now always return
-1.

Make all `transport` members and parameters of type `uint8_t`.

Document the return value of `CURLINFO_LOCAL_PORT` and
`CURLINFO_PRIMARY_PORT` in this regard. Add tests that writeout stats
report ports correctly.

Closes #19708

2025-11-27 14:32:01 +01:00

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SPDX-License-Identifier

Title

Section

Source

Protocol

See-also

Added-in

curl

CURLINFO_LOCAL_PORT

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.

If no connection was established or if the protocol does not use ports, -1 is returned.

%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).

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