RestTemplate -- default timeout value

Question

What is the default timeout value when using Spring's RestTemplate?

For e.g., I am invoking a web service like this:

RestTemplate restTemplate = new RestTemplate(); String response = restTemplate.getForObject("http://webservice.com/item/3455", String.class); 

Is there any built-in timeout value for RestTemplate? I am not planning to change the timeout value, however, I want to ensure that there is a reasonable timeout for every request.

Answer 1

To explicitly answer the question...

The default timeout is infinite.

By default RestTemplate uses SimpleClientHttpRequestFactory and that in turn uses HttpURLConnection.

By default the timeout for HttpURLConnection is 0 - ie infinite, unless it has been set by these properties :

-Dsun.net.client.defaultConnectTimeout=TimeoutInMiliSec  -Dsun.net.client.defaultReadTimeout=TimeoutInMiliSec  

Answer 2

I think you can use SimpleClientHttpRequestFactory for timeout parameter. Instance of SimpleClientHttpRequestFactory can be set to rest template by constructor or setter method.

By default RestTemplate uses SimpleClientHttpRequestFactory so may be you can directly set value to restTemplate.