assertLastOperationSuccess("b listen disc - " + b.format(), b);
a.disconnect();
assertLastOperationSuccess("a disc - " + a.format(), a);
b.waitForDisconnect(10000);
assertLastOperationSuccess("b wait disc - " + b.format(), b);
b.respondToDisconnect();
assertLastOperationSuccess("b disc - " + b.format(), b);