revert some changes

Author: arturobernalg

httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/AsyncConnectExec.java

@@ -102,7 +102,6 @@ public final class AsyncConnectExec implements AsyncExecChainHandler {
     private final AuthCacheKeeper authCacheKeeper;
     private final HttpRouteDirector routeDirector;
 
-    // NEW: optional ALPN provider
     private final ConnectAlpnProvider alpnProvider;
 
 
@@ -292,7 +291,55 @@ public void cancelled() {
                 if (LOG.isDebugEnabled()) {
                     LOG.debug("{} create tunnel", exchangeId);
                 }
-                createTunnel(state, proxy, target, route, scope, asyncExecCallback); // pass route
+                createTunnel(state, proxy, target, route, scope, new AsyncExecCallback() {
+
+                    @Override
+                    public AsyncDataConsumer handleResponse(final HttpResponse response, final EntityDetails entityDetails) throws HttpException, IOException {
+                        return asyncExecCallback.handleResponse(response, entityDetails);
+                    }
+
+                    @Override
+                    public void handleInformationResponse(final HttpResponse response) throws HttpException, IOException {
+                        asyncExecCallback.handleInformationResponse(response);
+                    }
+
+                    @Override
+                    public void completed() {
+                        if (!execRuntime.isEndpointConnected()) {
+                            // Remote endpoint disconnected. Need to start over
+                            if (LOG.isDebugEnabled()) {
+                                LOG.debug("{} proxy disconnected", exchangeId);
+                            }
+                            state.tracker.reset();
+                        }
+                        if (state.challenged) {
+                            if (LOG.isDebugEnabled()) {
+                                LOG.debug("{} proxy authentication required", exchangeId);
+                            }
+                            proceedToNextHop(state, request, entityProducer, scope, chain, asyncExecCallback);
+                        } else {
+                            if (state.tunnelRefused) {
+                                if (LOG.isDebugEnabled()) {
+                                    LOG.debug("{} tunnel refused", exchangeId);
+                                }
+                                asyncExecCallback.completed();
+                            } else {
+                                if (LOG.isDebugEnabled()) {
+                                    LOG.debug("{} tunnel to target created", exchangeId);
+                                }
+                                tracker.tunnelTarget(false);
+                                proceedToNextHop(state, request, entityProducer, scope, chain, asyncExecCallback);
+                            }
+                        }
+                    }
+
+                    @Override
+                    public void failed(final Exception cause) {
+                        execRuntime.markConnectionNonReusable();
+                        asyncExecCallback.failed(cause);
+                    }
+
+                });
                 break;
 
             case HttpRouteDirector.TUNNEL_PROXY: