---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_SERVER_RESPONSE_TIMEOUT_MS
Section: 3
Source: libcurl
See-also:
  - CURLOPT_CONNECTTIMEOUT (3)
  - CURLOPT_LOW_SPEED_LIMIT (3)
  - CURLOPT_TIMEOUT (3)
Protocol:
  - FTP
  - IMAP
  - POP3
  - SMTP
  - SFTP
  - SCP
Added-in: 8.6.0
---

# NAME

CURLOPT_SERVER_RESPONSE_TIMEOUT_MS - time allowed to wait for server response

# SYNOPSIS

~~~c
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SERVER_RESPONSE_TIMEOUT_MS,
                          long timeout);
~~~

# DESCRIPTION

Pass a long. It tells libcurl to wait no longer than *timeout* milliseconds
for responses on sent commands. If no response is received within this period,
the connection is considered dead and the transfer fails.

It is recommended that if used in conjunction with CURLOPT_TIMEOUT(3), you set
CURLOPT_SERVER_RESPONSE_TIMEOUT_MS(3) to a value smaller than
CURLOPT_TIMEOUT(3).

The maximum accepted value is 2147483648.

This is the millisecond version of CURLOPT_SERVER_RESPONSE_TIMEOUT(3).

# DEFAULT

None

# %PROTOCOLS%

# EXAMPLE

~~~c
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/slow.txt");
    /* wait no more than 237 milliseconds */
    curl_easy_setopt(curl, CURLOPT_SERVER_RESPONSE_TIMEOUT_MS, 237L);
    res = curl_easy_perform(curl);

    curl_easy_cleanup(curl);
  }
}
~~~

# %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).
