romenskiy2012/curl

mirror of https://github.com/curl/curl.git synced 2026-04-14 22:21:41 +03:00

Daniel Stenberg 2c6f13093e

libcurl docs: reduce 'since ...' in descriptions

Reduce mentions of libcurl versions like "since 7.xx ..." in option
descriptions to reduce clutter and make the texts easier to read. Keep
them in, or move them to, the HISTORY or DEPRECATED sections

The last version 7 release (7.88.1) shipped on Februrary 20, 2023.

Closes #20369

2026-01-20 11:22:27 +01:00

1.8 KiB

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SPDX-License-Identifier

Title

Section

Source

Protocol

See-also

Added-in

curl

CURLOPT_FTP_SKIP_PASV_IP

libcurl

FTP

CURLOPT_FTPPORT (3)

CURLOPT_FTP_USE_EPRT (3)

7.15.0

NAME

CURLOPT_FTP_SKIP_PASV_IP - ignore the IP address in the PASV response

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTP_SKIP_PASV_IP, long skip);

DESCRIPTION

Pass a long. If skip is set to 1, it instructs libcurl to not use the IP address the server suggests in its 227-response to libcurl's PASV command when libcurl connects the data connection. Instead libcurl reuses the same IP address it already uses for the control connection. It still uses the port number from the 227-response.

This option allows libcurl to work around broken server installations or funny network setups that due to NATs, firewalls or incompetence report the wrong IP address. Setting this option also reduces the risk for various sorts of client abuse by malicious servers.

This option has no effect if PORT, EPRT or EPSV is used instead of PASV.

DEFAULT

1, enabled.

%PROTOCOLS%

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode result;
    curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/file.txt");

    /* please ignore the IP in the PASV response */
    curl_easy_setopt(curl, CURLOPT_FTP_SKIP_PASV_IP, 1L);
    result = curl_easy_perform(curl);

    curl_easy_cleanup(curl);
  }
}

HISTORY

Before curl 7.74.0, this option was disabled by default.

%AVAILABILITY%

RETURN VALUE

curl_easy_setopt(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).

1.8 KiB Raw Blame History