---
name: "CURLOPT_ACCEPTTIMEOUT_MS"
section: "3"
platform: "linux"
package: "curl"
version: "8.23.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux", "macos"]
url: "https://new.carta.tech/CURLOPT_ACCEPTTIMEOUT_MS"
---

# CURLOPT\_ACCEPTTIMEOUT\_MS(3)

timeout waiting for FTP server to connect back

## NAME

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

## SYNOPSIS

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

## 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

60000 milliseconds

## PROTOCOLS

This functionality affects ftp only

## 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

Added in curl 7.24.0

## RETURN VALUE

*[curl\_easy\_setopt(3)](/curl_easy_setopt/3.md)* returns a CURLcode indicating success or error.

CURLE\_OK (0) means everything was OK, non-zero means an error occurred, see *[libcurl-errors(3)](/libcurl-errors/3.md)*.

## SEE ALSO

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