DragonFly On-Line Manual Pages
CURLOPT_TIMEOUT_MS(3) curl_easy_setopt options CURLOPT_TIMEOUT_MS(3)
CURLOPT_TIMEOUT_MS - set maximum time the request is allowed to take
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TIMEOUT_MS, long
Pass a long as parameter containing timeout - the maximum time in
milliseconds that you allow the libcurl transfer operation to take.
Normally, name lookups can take a considerable time and limiting
operations to less than a few minutes risk aborting perfectly normal
operations. This option may cause libcurl to use the SIGALRM signal to
timeout system calls.
If libcurl is built to use the standard system name resolver, that
portion of the transfer will still use full-second resolution for
timeouts with a minimum timeout allowed of one second.
In unix-like systems, this might cause signals to be used unless
CURLOPT_NOSIGNAL(3) is set.
If both CURLOPT_TIMEOUT(3) and CURLOPT_TIMEOUT_MS(3) are set, the value
set last will be used.
Since this puts a hard limit for how long time a request is allowed to
take, it has limited use in dynamic use cases with varying transfer
times. You are then advised to explore CURLOPT_LOW_SPEED_LIMIT(3),
CURLOPT_LOW_SPEED_TIME(3) or using CURLOPT_PROGRESSFUNCTION(3) to
implement your own timeout logic.
Default timeout is 0 (zero) which means it never times out during
CURL *curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
/* complete within 20000 milliseconds */
curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, 20000L);
libcurl 7.68.0 September 23, 2018 CURLOPT_TIMEOUT_MS(3)