CURLOPT_SERVER_RESPONSE_TIMEOUT - time allowed to wait for server response

Added in curl 7.20.0

None

Pass a long. Causes libcurl to set a timeout period (in seconds) on the amount of time that the server is allowed to take in order to send a response message for a command before the session is considered dead. While libcurl is waiting for a response, this value overrides CURLOPT_TIMEOUT(3). It is recommended that if used in conjunction with CURLOPT_TIMEOUT(3), you set CURLOPT_SERVER_RESPONSE_TIMEOUT(3) to a value smaller than CURLOPT_TIMEOUT(3). This option was formerly known as CURLOPT_FTP_RESPONSE_TIMEOUT.

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 23 seconds */ curl_easy_setopt(curl, CURLOPT_SERVER_RESPONSE_TIMEOUT, 23L); res = curl_easy_perform(curl); curl_easy_cleanup(curl); } }

CURLOPT_SERVER_RESPONSE_TIMEOUT - time allowed to wait for server response

This functionality affects ftp, imap, pop3, scp, sftp and smtp

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).

CURLOPT_CONNECTTIMEOUT(3), CURLOPT_LOW_SPEED_LIMIT(3), CURLOPT_TIMEOUT(3) libcurl 2025-06-16 CURLOPT_SERVER_RESPONSE_TIMEOUT(3)

#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SERVER_RESPONSE_TIMEOUT, long timeout);