CURLOPT\_ACCEPTTIMEOUT\_MS(3) Library Functions Manual CURLOPT\_ACCEPTTIMEOUT\_MS(3)

# [NAME](#NAME)

CURLOPT\_ACCEPTTIMEOUT\_MS - timeout waiting for FTP server to connect back

# [SYNOPSIS](#SYNOPSIS)

```
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ACCEPTTIMEOUT_MS, long ms);
```

# [DESCRIPTION](#DESCRIPTION)

Pass a long telling libcurl the maximum number of milliseconds to wait for a server to connect back to libcurl when an active FTP connection is used. When active FTP is used, the client (libcurl) tells the server to do a TCP connect back to the client, instead of vice versa for passive FTP.

This option has no purpose for passive FTP.

# [DEFAULT](#DEFAULT)

60000 milliseconds

# [PROTOCOLS](#PROTOCOLS)

This functionality affects ftp only

# [EXAMPLE](#EXAMPLE)

```
int main(void)
{


  CURL *curl = curl_easy_init();


  if(curl) {


    CURLcode result;


    curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/path/file");


    /* wait no more than 5 seconds for the FTP server to connect */


    curl_easy_setopt(curl, CURLOPT_ACCEPTTIMEOUT_MS, 5000L);


    result = curl_easy_perform(curl);


    curl_easy_cleanup(curl);


  }
}
```

# [AVAILABILITY](#AVAILABILITY)

Added in curl 7.24.0

# [RETURN VALUE](#RETURN_VALUE)

[*curl\_easy\_setopt(3)*](/man/os/curl/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)*](/man/os/curl/libcurl-errors.3).

# [SEE ALSO](#SEE_ALSO)

[**CURLOPT\_CONNECTTIMEOUT\_MS**(3)](/man/os/curl/CURLOPT_CONNECTTIMEOUT_MS.3), [**CURLOPT\_DEBUGFUNCTION**(3)](/man/os/curl/CURLOPT_DEBUGFUNCTION.3), [**CURLOPT\_FTPPORT**(3)](/man/os/curl/CURLOPT_FTPPORT.3), [**CURLOPT\_STDERR**(3)](/man/os/curl/CURLOPT_STDERR.3)

2026-10-01 libcurl

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Document: CURLOPT_ACCEPTTIMEOUT_MS(3) from curl 8.22.0-r4 (Chainguard OS)
Source: https://github.com/curl/curl.git