73 lines
1.6 KiB
Markdown
73 lines
1.6 KiB
Markdown
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c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_FTP_SKIP_PASV_IP
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_FTPPORT (3)
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- CURLOPT_FTP_USE_EPRT (3)
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---
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# NAME
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CURLOPT_FTP_SKIP_PASV_IP - ignore the IP address in the PASV response
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTP_SKIP_PASV_IP, long skip);
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~~~
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# DESCRIPTION
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Pass a long. If *skip* is set to 1, it instructs libcurl to not use the IP
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address the server suggests in its 227-response to libcurl's PASV command when
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libcurl connects the data connection. Instead libcurl reuses the same IP
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address it already uses for the control connection. It still uses the port
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number from the 227-response.
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This option allows libcurl to work around broken server installations or funny
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network setups that due to NATs, firewalls or incompetence report the wrong IP
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address. Setting this option also reduces the risk for various sorts of client
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abuse by malicious servers.
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This option has no effect if PORT, EPRT or EPSV is used instead of PASV.
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# DEFAULT
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1 since 7.74.0, was 0 before then.
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# PROTOCOLS
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FTP
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/file.txt");
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/* please ignore the IP in the PASV response */
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curl_easy_setopt(curl, CURLOPT_FTP_SKIP_PASV_IP, 1L);
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.14.2
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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