I understand that you wish to set a 1 second timeout before throwing an error while using 'webwrite' for the dummy url. You are experiencing a delay of 30 seconds before the error is being thrown.
The following behaviour is observed because:
- 'http://dummy' triggers a DNS lookup, which fails slowly (up to 30 seconds), especially if the domain doesn’t exist.
- The 'Timeout' value (even if set to 1 second) is ignored during DNS resolution.
As a workaround to test the 1 second timeout, consider using a non-routable IP address. This would bypass the DNS step and trigger the TCP timeout.
Here is an exmple:
webwrite('http://10.255.255.1', 'blah', weboptions('Timeout', 1));
The following MathWorks documentations can be referred:
Thanks.
