Can any tell me, if there are any possibility to change the parameters of the proxy in a established conection. For example, if my program are download a file using a inputstream object, but in the middle of donwload process, I want to change the user authenticated in the proxy, this is the current user of the conection, my question is: it is posible make this change over donwload process, without break the conection and start to in the break point.