88 lines
2.2 KiB
Markdown
88 lines
2.2 KiB
Markdown
|
---
|
||
|
|
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
|
||
|
|
SPDX-License-Identifier: curl
|
||
|
|
Title: CURLOPT_CONNECTTIMEOUT_MS
|
||
|
|
Section: 3
|
||
|
|
Source: libcurl
|
||
|
|
See-also:
|
||
|
|
- CURLOPT_LOW_SPEED_LIMIT (3)
|
||
|
|
- CURLOPT_MAX_RECV_SPEED_LARGE (3)
|
||
|
|
- CURLOPT_TIMEOUT_MS (3)
|
||
|
|
Protocol:
|
||
|
|
- All
|
||
|
|
Added-in: 7.16.2
|
||
|
|
---
|
||
|
|
|
||
|
|
# NAME
|
||
|
|
|
||
|
|
CURLOPT_CONNECTTIMEOUT_MS - timeout for the connect phase
|
||
|
|
|
||
|
|
# SYNOPSIS
|
||
|
|
|
||
|
|
~~~c
|
||
|
|
#include <curl/curl.h>
|
||
|
|
|
||
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CONNECTTIMEOUT_MS,
|
||
|
|
long timeout);
|
||
|
|
~~~
|
||
|
|
|
||
|
|
# DESCRIPTION
|
||
|
|
|
||
|
|
Pass a long. It sets the maximum time in milliseconds that you allow the
|
||
|
|
connection phase to take. This timeout only limits the connection phase, it
|
||
|
|
has no impact once libcurl has connected. The connection phase includes the
|
||
|
|
name resolve (DNS) and all protocol handshakes and negotiations until there is
|
||
|
|
an established connection with the remote side.
|
||
|
|
|
||
|
|
Set this option to zero to switch to the default built-in connection timeout -
|
||
|
|
300 seconds. See also the CURLOPT_TIMEOUT_MS(3) option.
|
||
|
|
|
||
|
|
CURLOPT_CONNECTTIMEOUT(3) is the same function but set in seconds.
|
||
|
|
|
||
|
|
If both CURLOPT_CONNECTTIMEOUT(3) and CURLOPT_CONNECTTIMEOUT_MS(3) are set,
|
||
|
|
the value set last is used.
|
||
|
|
|
||
|
|
The connection timeout is included in the general all-covering
|
||
|
|
CURLOPT_TIMEOUT_MS(3):
|
||
|
|
|
||
|
|
With CURLOPT_CONNECTTIMEOUT_MS(3) set to 3000 and CURLOPT_TIMEOUT_MS(3) set to
|
||
|
|
5000, the operation can never last longer than 5000 milliseconds, and the
|
||
|
|
connection phase cannot last longer than 3000 milliseconds.
|
||
|
|
|
||
|
|
With CURLOPT_CONNECTTIMEOUT_MS(3) set to 4000 and CURLOPT_TIMEOUT_MS(3) set to
|
||
|
|
2000, the operation can never last longer than 2000 milliseconds. Including
|
||
|
|
the connection phase.
|
||
|
|
|
||
|
|
This option may cause libcurl to use the SIGALRM signal to timeout system
|
||
|
|
calls on builds not using asynch DNS. In Unix-like systems, this might cause
|
||
|
|
signals to be used unless CURLOPT_NOSIGNAL(3) is set.
|
||
|
|
|
||
|
|
# DEFAULT
|
||
|
|
|
||
|
|
300000
|
||
|
|
|
||
|
|
# %PROTOCOLS%
|
||
|
|
|
||
|
|
# EXAMPLE
|
||
|
|
|
||
|
|
~~~c
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
CURL *curl = curl_easy_init();
|
||
|
|
if(curl) {
|
||
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
|
||
|
|
|
||
|
|
/* complete connection within 10000 milliseconds */
|
||
|
|
curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT_MS, 10000L);
|
||
|
|
|
||
|
|
curl_easy_perform(curl);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
~~~
|
||
|
|
|
||
|
|
# %AVAILABILITY%
|
||
|
|
|
||
|
|
# RETURN VALUE
|
||
|
|
|
||
|
|
Returns CURLE_OK
|