Also, you did get a response back from the server, it's a 404. The reason it "hangs" is because it has to wait to be picked up by the MID server which I believe will poll for work every 15 seconds. Note that if you don't care about the response i.e. if it's a fire and forget kind of request, you can send the request with .execute() and then don't call any method on the response like getBody or getStatus -- those will cause the client to block waiting for the response.