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cc636fff21
This is a complete redesign of what was previously XmppNioTcpConnection. The new architecture allows to extend an XMPP client to server (c2s) connection with new transport bindings and other extensions.
86 lines
4.4 KiB
Java
86 lines
4.4 KiB
Java
/**
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*
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* Copyright 2019-2020 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.isr;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.AuthenticatedAndResourceBoundStateDescriptor;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.ConnectedButUnauthenticatedStateDescriptor;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnection.SaslAuthenticationStateDescriptor;
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import org.jivesoftware.smack.c2s.ModularXmppClientToServerConnectionModule;
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import org.jivesoftware.smack.c2s.internal.ModularXmppClientToServerConnectionInternal;
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import org.jivesoftware.smack.c2s.internal.WalkStateGraphContext;
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import org.jivesoftware.smack.fsm.State;
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import org.jivesoftware.smack.fsm.StateDescriptor;
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import org.jivesoftware.smack.fsm.StateTransitionResult;
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public class InstantStreamResumptionModule extends ModularXmppClientToServerConnectionModule<InstantStreamResumptionModuleDescriptor> {
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protected InstantStreamResumptionModule(InstantStreamResumptionModuleDescriptor instantStreamResumptionModuleDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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super(instantStreamResumptionModuleDescriptor, connectionInternal);
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}
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public static final class InstantStreamResumptionStateDescriptor extends StateDescriptor {
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private InstantStreamResumptionStateDescriptor() {
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super(InstantStreamResumptionState.class, 397, StateDescriptor.Property.notImplemented);
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addSuccessor(AuthenticatedAndResourceBoundStateDescriptor.class);
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addPredeccessor(ConnectedButUnauthenticatedStateDescriptor.class);
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declarePrecedenceOver(SaslAuthenticationStateDescriptor.class);
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}
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@Override
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protected InstantStreamResumptionModule.InstantStreamResumptionState constructState(ModularXmppClientToServerConnectionInternal connectionInternal) {
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// This is the trick: the module is constructed prior the states, so we get the actual state out of the module by fetching the module from the connection.
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InstantStreamResumptionModule isrModule = connectionInternal.connection.getConnectionModuleFor(InstantStreamResumptionModuleDescriptor.class);
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return isrModule.constructInstantStreamResumptionState(this, connectionInternal);
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}
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}
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private boolean useIsr = true;
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private final class InstantStreamResumptionState extends State {
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private InstantStreamResumptionState(InstantStreamResumptionStateDescriptor instantStreamResumptionStateDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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super(instantStreamResumptionStateDescriptor, connectionInternal);
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}
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@Override
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public StateTransitionResult.TransitionImpossible isTransitionToPossible(WalkStateGraphContext walkStateGraphContext) {
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if (!useIsr) {
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return new StateTransitionResult.TransitionImpossibleReason("Instant stream resumption not enabled nor implemented");
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}
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return new StateTransitionResult.TransitionImpossibleBecauseNotImplemented(stateDescriptor);
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}
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@Override
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public StateTransitionResult.AttemptResult transitionInto(WalkStateGraphContext walkStateGraphContext) {
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throw new IllegalStateException("Instant stream resumption not implemented");
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}
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}
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public void setInstantStreamResumptionEnabled(boolean useIsr) {
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this.useIsr = useIsr;
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}
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public InstantStreamResumptionState constructInstantStreamResumptionState(
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InstantStreamResumptionStateDescriptor instantStreamResumptionStateDescriptor,
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ModularXmppClientToServerConnectionInternal connectionInternal) {
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return new InstantStreamResumptionState(instantStreamResumptionStateDescriptor, connectionInternal);
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}
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}
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