gistfile1.java

import groovyx.net.http.HTTPBuilder
import static groovyx.net.http.Method.GET
import static groovyx.net.http.ContentType.TEXT

class HTTPTester {

static void main(String[] args){

def http = new HTTPBuilder( 'http://fratechit.appspot.com' )

while(true) {
    print new Date().time + ": "

    http.request(GET,TEXT){ req ->
        uri.path = '/recache';
        headers.'User-Agent' = 'Mozilla/5.0';

        response.success = { resp, reader ->
            assert resp.statusLine.statusCode == 200
            println "My response handler got response: ${resp.statusLine}"
        }

        response.'404' = {resp ->  
            println 'Not found'
        }

        http.handler.failure = {resp ->
            println "Unexpected failure: ${resp.statusLine}"
        }
    }
    Thread.sleep(30000);
  }
 }
}