Responder bRes = new RecursingResponder(TestBasicTracing.advancedProtocol, bPlugin);
bRes.addRPCPlugin(bPlugin);
HttpServer server1 = new HttpServer(bRes, 21005);
server1.start();
Responder cRes = new EndpointResponder(TestBasicTracing.advancedProtocol);
cRes.addRPCPlugin(cPlugin);
HttpServer server2 = new HttpServer(cRes, 21006);
server2.start();
Responder dRes = new EndpointResponder(TestBasicTracing.advancedProtocol);
dRes.addRPCPlugin(dPlugin);
HttpServer server3 = new HttpServer(dRes, 21007);
server3.start();
// Root requestor
HttpTransceiver trans = new HttpTransceiver(