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Updated: Wednesday, July 27, 2022
 
 

CURLOPT_FTP_SKIP_PASV_IP (3)

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

curl_easy_setopt options                           CURLOPT_FTP_SKIP_PASV_IP(3)



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 will
       re-use the same IP address it already uses for the control  connection.
       But it will use the port number from the 227-response.

       This  option thus allows libcurl to work around broken server installa-
       tions that due to NATs, firewalls or incompetence report the  wrong  IP
       address  back.  Setting  the  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 since 7.74.0, was 0 before then.

PROTOCOLS
       FTP

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         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);
         ret = curl_easy_perform(curl);

         curl_easy_cleanup(curl);
       }

AVAILABILITY
       Added in 7.14.2

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


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | web/curl         |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+

SEE ALSO
       CURLOPT_FTPPORT(3), CURLOPT_FTP_USE_EPRT(3),



NOTES
       Source code for open source software components in Oracle  Solaris  can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-
       code-downloads.html.

       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source      was      downloaded       from        https://curl.se/down-
       load/curl-7.83.1.tar.bz2.

       Further information about this software can be found on the open source
       community website at http://curl.haxx.se/.



libcurl 7.83.1                 November 26, 2021
                                                   CURLOPT_FTP_SKIP_PASV_IP(3)