if (((HttpEntityEnclosingRequest) request).expectContinue()) {
httpExchange.setRequestState(MessageState.ACK_EXPECTED);
if (this.expectationVerifier != null) {
conn.suspendInput();
HttpAsyncContinueTrigger trigger = new ContinueTriggerImpl(httpExchange, conn);
Cancellable asyncProcess = this.expectationVerifier.verify(request, trigger, context);
httpExchange.setAsyncProcess(asyncProcess);
} else {
HttpResponse response = create100Continue(request);
conn.submitResponse(response);
httpExchange.setRequestState(MessageState.BODY_STREAM);