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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.polo.pairing;
import com.google.polo.exception.PoloException;
import com.google.polo.pairing.message.ConfigurationAckMessage;
import com.google.polo.pairing.message.OptionsMessage;
import com.google.polo.pairing.message.PairingRequestAckMessage;
import com.google.polo.pairing.message.PairingRequestMessage;
import com.google.polo.pairing.message.PoloMessage.PoloMessageType;
import com.google.polo.wire.PoloWireInterface;
import java.io.IOException;
/**
* Pairing session implementation for a client.
*/
public class ClientPairingSession extends PairingSession {
/**
* Client name;
*/
private final String mClientName;
/**
* Constructor.
*
* @param protocol the wire interface for the session
* @param context the pairing context for the session
* @param serviceName the string service name, used in the pairing request
*/
public ClientPairingSession(PoloWireInterface protocol,
PairingContext context, String serviceName) {
this(protocol, context, serviceName, null);
}
/**
* Constructor.
*
* @param protocol the wire interface for the session
* @param context the pairing context for the session
* @param serviceName the string service name, used in the pairing request
* @param clientName the string client name, used in the pairing request
*/
public ClientPairingSession(PoloWireInterface protocol,
PairingContext context, String serviceName, String clientName) {
super(protocol, context);
mServiceName = serviceName;
mClientName = clientName;
}
@Override
protected void doInitializationPhase()
throws PoloException, IOException {
logDebug("Sending PairingRequest... " + mServiceName);
PairingRequestMessage msg = new PairingRequestMessage(mServiceName);
sendMessage(msg);
logDebug("Waiting for PairingRequestAck ...");
PairingRequestAckMessage ack = (PairingRequestAckMessage) getNextMessage(
PoloMessageType.PAIRING_REQUEST_ACK);
if (ack.hasServerName()) {
mPeerName = ack.getServerName();
logDebug("Got PairingRequestAck with server name = " + mPeerName);
} else {
mPeerName = null;
}
logDebug("Sending Options ...");
sendMessage(mLocalOptions);
logDebug("Waiting for Options...");
OptionsMessage serverOptions = (OptionsMessage) getNextMessage(
PoloMessageType.OPTIONS);
// Compare compatibility with server options, and save config.
System.out.println("Local config = " + mLocalOptions);
System.out.println("Server options = " + serverOptions);
setConfiguration(mLocalOptions.getBestConfiguration(serverOptions));
}
@Override
protected void doConfigurationPhase() throws PoloException, IOException {
logDebug("Sending Configuration...");
sendMessage(mSessionConfig);
logDebug("Waiting for ConfigurationAck...");
ConfigurationAckMessage ack = (ConfigurationAckMessage)
getNextMessage(PoloMessageType.CONFIGURATION_ACK);
}
/**
* Returns {@code true} if client name is set.
*/
public boolean hasClientName() {
return mClientName != null;
}
/**
* Returns {@code true} if server name is set.
*/
public boolean hasServerName() {
return hasPeerName();
}
/**
* Returns client name, or {@code null} if not set.
*/
public String getClientName() {
return mClientName;
}
/**
* Returns server name, or {@code null} if not set.
*/
public String getServerName() {
return getPeerName();
}
}
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