Add Network Bosh Classes

Add the missing Bosh classes to the network packages (BoshConnection and BoshConnectionPool), plus tests for the classes and any other classes required by the new classes. Test-information: Units tests all pass ok. Change-Id: I5c2e05bae9e678ac10d2601c7fdbdccd68d66b71
author: Alex Clayton <alex.clayton@isode.com> 2016-02-15 17:24:49 (GMT)
committer: Alex Clayton <alex.clayton@isode.com> 2016-02-29 10:39:49 (GMT)
commit: 3bfe54c141dd3fa20e391312a0a84c75731e2b2a (patch)
tree: 4de10e954ff540fa6e1b70c8735ac5da14b19743 /src
parent: 2ebf488dfee7156fbbe0b3d3eccebe13d86a8634 (diff)
download: stroke-3bfe54c141dd3fa20e391312a0a84c75731e2b2a.zip
stroke-3bfe54c141dd3fa20e391312a0a84c75731e2b2a.tar.bz2
5 files changed, 1176 insertions, 2 deletions
diff --git a/src/com/isode/stroke/network/BOSHConnection.java b/src/com/isode/stroke/network/BOSHConnection.java
new file mode 100644
index 0000000..43b990d
--- /dev/null
+++ b/src/com/isode/stroke/network/BOSHConnection.java
@@ -0,0 +1,527 @@
+/*  Copyright (c) 2016, Isode Limited, London, England.
+ *  All rights reserved.
+ *
+ *  Acquisition and use of this software and related materials for any
+ *  purpose requires a written license agreement from Isode Limited,
+ *  or a written license from an organisation licensed by Isode Limited
+ *  to grant such a license.
+ *
+ */
+package com.isode.stroke.network;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import com.isode.stroke.base.ByteArray;
+import com.isode.stroke.base.Error;
+import com.isode.stroke.base.SafeByteArray;
+import com.isode.stroke.base.URL;
+import com.isode.stroke.network.BOSHConnection.BOSHError.Type;
+import com.isode.stroke.parser.BOSHBodyExtractor;
+import com.isode.stroke.parser.BOSHBodyExtractor.BOSHBody;
+import com.isode.stroke.parser.XMLParserFactory;
+import com.isode.stroke.session.SessionStream.SessionStreamError;
+import com.isode.stroke.signals.Signal1;
+import com.isode.stroke.signals.Signal2;
+import com.isode.stroke.signals.SignalConnection;
+import com.isode.stroke.signals.Slot;
+import com.isode.stroke.signals.Slot1;
+import com.isode.stroke.signals.Slot2;
+import com.isode.stroke.streamstack.DummyStreamLayer;
+import com.isode.stroke.streamstack.HighLayer;
+import com.isode.stroke.streamstack.TLSLayer;
+import com.isode.stroke.tls.Certificate;
+import com.isode.stroke.tls.CertificateVerificationError;
+import com.isode.stroke.tls.CertificateWithKey;
+import com.isode.stroke.tls.TLSContextFactory;
+import com.isode.stroke.tls.TLSError;
+import com.isode.stroke.tls.TLSOptions;
+
+public class BOSHConnection {
+
+    private final URL boshURL_;
+    private Connector connector_;
+    private final XMLParserFactory parserFactory_;
+    private Connection connection_;
+    private final HighLayer dummyLayer_;
+    private final TLSLayer tlsLayer_;
+    private String sid_ = "";
+    private boolean waitingForStartResponse_ = false;
+    private long rid_ = 0;
+    private final SafeByteArray buffer_ = new SafeByteArray();
+    private boolean pending_ = false;
+    private boolean connectionReady_ = false;
+    
+    public final Signal1<Boolean> onConnectionFinished = new Signal1<Boolean>();
+    public final Signal1<Boolean> onDisconnected = new Signal1<Boolean>();
+    public final Signal1<BOSHError> onSessionTerminated = new Signal1<BOSHError>();
+    public final Signal2<String, Integer> onSessionStarted = new Signal2<String, Integer>();
+    public final Signal1<SafeByteArray> onXMPPDataRead = new Signal1<SafeByteArray>();
+    public final Signal1<SafeByteArray> onBOSHDataRead = new Signal1<SafeByteArray>();
+    public final Signal1<SafeByteArray> onBOSHDataWritten = new Signal1<SafeByteArray>();
+    public final Signal1<String> onHTTPError = new Signal1<String>();
+    
+    private final Logger logger = Logger.getLogger(this.getClass().getName());
+    private SignalConnection onConnectFinishedConnection;
+    
+    public static class BOSHError extends com.isode.stroke.session.SessionStream.SessionStreamError {
+        
+        public enum Type {
+            BadRequest, HostGone, HostUnknown, ImproperAddressing,
+            InternalServerError, ItemNotFound, OtherRequest, PolicyViolation,
+            RemoteConnectionFailed,RemoteStreamError,SeeOtherURI,SystemShutdown,
+            UndefinedCondition,NoError;
+        }
+        
+        public BOSHError(Type type) {
+            super(SessionStreamError.Type.ConnectionReadError);
+            type_ = type;
+        }
+        
+        public Type getType() {
+            return type_;
+        }
+        
+        private final Type type_;
+        
+    }
+    
+    public static class Pair<T1,T2> {
+        public final T1 first;
+        public final T2 second;
+        
+        public Pair(T1 first,T2 second) {
+           this.first = first;
+           this.second = second;
+        }
+    }
+    
+    private BOSHConnection(URL url,Connector connector,XMLParserFactory parserFactory,
+            TLSContextFactory tlsContextFactory,TLSOptions tlsOptions) {
+        boshURL_ = url;
+        connector_ = connector;
+        parserFactory_ = parserFactory;
+        if ("https".equals(boshURL_.getScheme())) {
+            tlsLayer_ = new TLSLayer(tlsContextFactory, tlsOptions);
+            dummyLayer_ = new DummyStreamLayer(tlsLayer_);
+        }
+        else {
+            tlsLayer_ = null;
+            dummyLayer_ = null;
+        }
+    }
+    
+    public static BOSHConnection create(URL url,Connector connector,
+            XMLParserFactory parserFactory,TLSContextFactory tlsContextFactory,TLSOptions tlsOptions) {
+        return new BOSHConnection(url, connector, parserFactory, tlsContextFactory, tlsOptions);
+    }
+    
+    public void connect() {
+        onConnectFinishedConnection = connector_.onConnectFinished.connect(new Slot2<Connection, Error>() {
+            
+            @Override
+            public void call(Connection connection, Error error) {
+                handleConnectFinished(connection);
+            }
+            
+        });
+        connector_.start();
+    }
+    
+    public void disconnect() {
+        if (connection_ != null) {
+            connection_.disconnect();
+            sid_ = "";
+        }
+        else {
+            handleDisconnected(null);
+        }
+    }
+    
+    public void write(SafeByteArray data) {
+        write(data,false,false);
+    }
+    
+    private void write(SafeByteArray data, boolean streamRestart, boolean terminate) {
+        assert(connectionReady_);
+        assert(!sid_.isEmpty());
+
+        SafeByteArray safeHeader =
+                createHTTPRequest(data, streamRestart, terminate, rid_, sid_, boshURL_).first;
+
+        onBOSHDataWritten.emit(safeHeader);
+        writeData(safeHeader);
+        pending_ = true;
+
+        String logMessage = "write data: " + safeHeader.toString() + "\n";
+        logger.log(Level.FINE,logMessage);
+    }
+
+    public String getSID() {
+        return sid_;
+    }
+    
+    public void setRID(long rid) {
+        rid_ = rid;
+    }
+    
+    public void setSID(String sid) {
+        sid_ = sid;
+    }
+    
+    public void startStream(String to,long rid) {
+        assert(connectionReady_);
+        
+        String content = "<body content='text/xml; charset=utf-8'"
+                + " hold='1'"
+                + " to='" + to + "'"
+                + " rid='" + rid + "'"
+                + " ver='1.6'"
+                + " wait='60'" 
+                + " xml:lang='en'"
+                + " xmlns:xmpp='urn:xmpp:bosh'"
+                + " xmpp:version='1.0'"
+                + " xmlns='http://jabber.org/protocol/httpbind' />";
+
+        StringBuilder headerBuilder = new StringBuilder("POST " + boshURL_.getPath() + " HTTP/1.1\r\n"
+                + "Host: " + boshURL_.getHost());
+        Integer boshPort = boshURL_.getPort();
+        if (boshPort != null) {
+            headerBuilder.append(":");
+            headerBuilder.append(boshPort);
+        }
+        headerBuilder.append("\r\n");
+        headerBuilder.append("Accept-Encoding: deflate\r\n");
+        headerBuilder.append("Content-Type: text/xml; charset=utf-8\r\n");
+        headerBuilder.append("Content-Length: ");
+        headerBuilder.append(content.length());
+        headerBuilder.append("\r\n\r\n");
+        headerBuilder.append(content);
+        
+        waitingForStartResponse_ = true;
+        SafeByteArray safeHeader = new SafeByteArray(headerBuilder.toString());
+        onBOSHDataWritten.emit(safeHeader);
+        writeData(safeHeader);
+        logger.fine("write stream header: "+safeHeader.toString()+"\n");
+    }
+    
+    public void terminateStream() {
+        write(new SafeByteArray(),false,true);
+    }
+    
+    public boolean isReadyToSend() {
+        // Without pipelining you need to not send more without first receiving the response
+        // With pipelining you can. Assuming we can't, here
+        return connectionReady_ && !pending_ && !waitingForStartResponse_ && !sid_.isEmpty();
+    }
+    
+    public void restartStream() {
+        write(new SafeByteArray(),true,false);
+    }
+    
+    public boolean setClientCertificate(CertificateWithKey cert) {
+        if (tlsLayer_ != null) {
+            logger.fine("set client certificate\n");
+            return tlsLayer_.setClientCertificate(cert);
+        }
+        else {
+            return false;
+        }
+    }
+    
+    public Certificate getPeerCertificate() {
+        if (tlsLayer_ != null) {
+            return tlsLayer_.getPeerCertificate();
+        }
+        return null;
+    }
+    
+    public CertificateVerificationError getPeerCertificateVerficationError() {
+        if (tlsLayer_ != null) {
+            return tlsLayer_.getPeerCertificateVerificationError();
+        }
+        return null;
+    }
+    
+    public List<Certificate> getPeerCertificateChain() {
+        if (tlsLayer_ != null) {
+            return tlsLayer_.getPeerCertificateChain();
+        }
+        return new ArrayList<Certificate>();
+    }
+    
+    protected static Pair<SafeByteArray,Integer> createHTTPRequest(SafeByteArray data,
+            boolean streamRestart,boolean terminate,long rid,String sid,URL boshURL) {
+        int size = 0;
+        StringBuilder contentBuilder = new StringBuilder();
+        SafeByteArray contentTail = new SafeByteArray("</body>");
+        StringBuilder headerBuilder = new StringBuilder();
+        
+        contentBuilder.append("<body rid='");
+        contentBuilder.append(rid);
+        contentBuilder.append("' sid='");
+        contentBuilder.append(sid);
+        contentBuilder.append("'");
+        if (streamRestart) {
+            contentBuilder.append(" xmpp:restart='true' xmlns:xmpp='urn:xmpp:xbosh'");
+        }
+        if (terminate) {
+            contentBuilder.append(" type='terminate'");
+        }
+        contentBuilder.append(" xmlns='http://jabber.org/protocol/httpbind'>");
+        
+        SafeByteArray safeContent = new SafeByteArray(contentBuilder.toString());
+        safeContent.append(data);
+        safeContent.append(contentTail);
+        
+        size = safeContent.getSize();
+        
+        headerBuilder.append("POST " + boshURL.getPath() + " HTTP/1.1\r\n"
+                + "Host: " + boshURL.getHost());
+        Integer boshPort = boshURL.getPort();
+        if (boshPort != null) {
+            headerBuilder.append(":");
+            headerBuilder.append(boshPort);
+        }
+        headerBuilder.append("\r\n");
+        headerBuilder.append("Accept-Encoding: deflate\r\n");
+        headerBuilder.append("Content-Type: text/xml; charset=utf-8\r\n");
+        headerBuilder.append("Content-Length: ");
+        headerBuilder.append(size);
+        headerBuilder.append("\r\n\r\n");
+        
+        SafeByteArray safeHeader = new SafeByteArray(headerBuilder.toString());
+        safeHeader.append(safeContent);
+        
+        return new Pair<SafeByteArray, Integer>(safeHeader, size);
+    }
+    
+    private void handleConnectFinished(Connection connection) {
+        cancelConnector();
+        connectionReady_ = (connection != null);
+        if (connectionReady_) {
+            connection_ = connection;
+            if (tlsLayer_ != null) {
+                connection_.onDataRead.connect(new Slot1<SafeByteArray>() {
+
+                    @Override
+                    public void call(SafeByteArray data) {
+                        handleRawDataRead(data);
+                    }
+
+                });
+                connection_.onDisconnected.connect(new Slot1<Connection.Error>() {
+
+                    @Override
+                    public void call(
+                            com.isode.stroke.network.Connection.Error error) {
+                        handleDisconnected(error);
+                    }
+
+                });
+
+                tlsLayer_.getContext().onDataForNetwork.connect(new Slot1<SafeByteArray>() {
+
+                    @Override
+                    public void call(SafeByteArray data) {
+                        handleTLSNetworkDataWriteRequest(data);
+                    }
+
+                });
+                tlsLayer_.getContext().onDataForApplication.connect(new Slot1<SafeByteArray>() {
+
+                    @Override
+                    public void call(SafeByteArray data) {
+                        handleTLSApplicationDataRead(data);
+                    }
+
+                });
+
+                tlsLayer_.onConnected.connect(new Slot() {
+
+                    @Override
+                    public void call() {
+                        handleTLSConnected();
+                    }
+
+                });
+
+                tlsLayer_.onError.connect(new Slot1<TLSError>() {
+
+                    @Override
+                    public void call(TLSError error) {
+                        handleTLSError(error);
+                    }
+
+                });
+                tlsLayer_.connect();
+            }
+            else {
+                connection_.onDataRead.connect(new Slot1<SafeByteArray>() {
+
+                    @Override
+                    public void call(SafeByteArray data) {
+                        handleDataRead(data);
+                    }
+
+                });
+                connection_.onDisconnected.connect(new Slot1<Connection.Error>() {
+
+                    @Override
+                    public void call(Connection.Error error) {
+                        handleDisconnected(error);
+                    }
+
+                });
+            }
+
+            if (!connectionReady_ || tlsLayer_ == null) {
+                onConnectionFinished.emit(!connectionReady_);
+            }
+        }
+    }
+    
+    private void handleDataRead(SafeByteArray data) {
+        onBOSHDataRead.emit(data);
+        buffer_.append(data);
+        String response = buffer_.toString();
+        if (!response.contains("\r\n\r\n")) {
+            onBOSHDataRead.emit(new SafeByteArray("[[Previous read incomplete, pending]]"));
+            return;
+        }
+        int httpCodeIndex = response.indexOf(" ")+1;
+        String httpCode = response.substring(httpCodeIndex,httpCodeIndex+3);
+        if (!"200".equals(httpCode)) {
+            onHTTPError.emit(httpCode);
+            return;
+        }
+        ByteArray boshData = new ByteArray(response.substring(response.indexOf("\r\n\r\n")));
+        BOSHBodyExtractor parser = new BOSHBodyExtractor(parserFactory_, boshData);
+        BOSHBody boshBody = parser.getBody();
+        if (boshBody != null) {
+            String typeAttribute = boshBody.getAttributes().getAttribute("type");
+            if ( "terminate".equals(typeAttribute) ) {
+                String conditionAttribute = boshBody.getAttributes().getAttribute("condition");
+                BOSHError.Type errorType = parseTerminationCondition(conditionAttribute);
+                onSessionTerminated.emit(errorType == BOSHError.Type.NoError ? null : new BOSHError(errorType));
+            }
+            buffer_.clear();
+            if (waitingForStartResponse_) {
+                waitingForStartResponse_ = false;
+                sid_ = boshBody.getAttributes().getAttribute("sid");
+                String requestsString = boshBody.getAttributes().getAttribute("requests");
+                Integer requests = Integer.valueOf(2);
+                if (requestsString != null && !requestsString.isEmpty()) {
+                    try {
+                        requests = Integer.valueOf(requestsString);
+                    } catch (NumberFormatException e) {
+                        requests = Integer.valueOf(2);
+                    }
+                }
+                onSessionStarted.emit(sid_, requests);
+            }
+            
+            SafeByteArray payload = new SafeByteArray(boshBody.getContent());
+            /* Say we're good to go again, so don't add anything after here in the method */
+            pending_ = false;
+            onXMPPDataRead.emit(payload);
+        }
+    }
+    
+    private void handleDisconnected(Connection.Error error) {
+        cancelConnector();
+        onDisconnected.emit(error != null ? Boolean.TRUE : Boolean.FALSE);
+        sid_ = "";
+        connectionReady_ = false;
+    }
+    
+    private Type parseTerminationCondition(String text) {
+        Type condition = Type.UndefinedCondition;
+        if ("bad-request".equals(text)) {
+            condition = Type.BadRequest;
+        }
+        else if ("host-gone".equals(text)) {
+            condition = Type.HostGone;
+        }
+        else if ("host-unknown".equals(text)) {
+            condition = Type.HostUnknown;
+        }
+        else if ("improper-addressing".equals(text)) {
+            condition = Type.ImproperAddressing;
+        }
+        else if ("internal-server-error".equals(text)) {
+            condition = Type.InternalServerError;
+        }
+        else if ("item-not-found".equals(text)) {
+            condition = Type.ItemNotFound;
+        }
+        else if ("other-request".equals(text)) {
+            condition = Type.OtherRequest;
+        }
+        else if ("policy-violation".equals(text)) {
+            condition = Type.PolicyViolation;
+        }
+        else if ("remote-connection-failed".equals(text)) {
+            condition = Type.RemoteConnectionFailed;
+        }
+        else if ("remote-stream-error".equals(text)) {
+            condition = Type.RemoteStreamError;
+        }
+        else if ("see-other-uri".equals(text)) {
+            condition = Type.SeeOtherURI;
+        }
+        else if ("system-shutdown".equals(text)) {
+            condition = Type.SystemShutdown;
+        }
+        else if ("".equals(text)) {
+            condition = Type.NoError;
+        }
+        return condition;
+    }
+    
+    private void cancelConnector() {
+        if (connector_ != null) {
+            if (onConnectFinishedConnection != null) {
+                onConnectFinishedConnection.disconnect();
+            }
+            connector_.stop();
+            connector_ = null;
+        }
+    }
+
+    private void handleTLSConnected() {
+        logger.fine("\n");
+        onConnectionFinished.emit(Boolean.FALSE);
+    }
+    
+    private void handleTLSApplicationDataRead(SafeByteArray data) {
+        logger.fine("\n");
+        handleDataRead(new SafeByteArray(data));
+    }
+    
+    private void handleTLSNetworkDataWriteRequest(SafeByteArray data) {
+        logger.fine("\n");
+        connection_.write(data);
+    }
+    
+    private void handleRawDataRead(SafeByteArray data) {
+        logger.fine("\n");
+        tlsLayer_.handleDataRead(data);
+    }
+    
+    private void handleTLSError(TLSError error) {
+        // Empty Method
+    }
+
+    private void writeData(SafeByteArray data) {
+        if (tlsLayer_ != null) {
+            tlsLayer_.writeData(data);
+        }
+        else {
+            connection_.write(data);
+        }
+    }
+
+}
diff --git a/src/com/isode/stroke/network/BOSHConnectionPool.java b/src/com/isode/stroke/network/BOSHConnectionPool.java
new file mode 100644
index 0000000..9eefb83
--- /dev/null
+++ b/src/com/isode/stroke/network/BOSHConnectionPool.java
@@ -0,0 +1,417 @@
+/*  Copyright (c) 2016, Isode Limited, London, England.
+ *  All rights reserved.
+ *
+ *  Acquisition and use of this software and related materials for any
+ *  purpose requires a written license agreement from Isode Limited,
+ *  or a written license from an organisation licensed by Isode Limited
+ *  to grant such a license.
+ *
+ */
+package com.isode.stroke.network;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.logging.Logger;
+
+import com.isode.stroke.base.SafeByteArray;
+import com.isode.stroke.base.SafeString;
+import com.isode.stroke.base.URL;
+import com.isode.stroke.eventloop.EventLoop;
+import com.isode.stroke.network.BOSHConnection.BOSHError;
+import com.isode.stroke.parser.XMLParserFactory;
+import com.isode.stroke.signals.Signal;
+import com.isode.stroke.signals.Signal1;
+import com.isode.stroke.signals.SignalConnection;
+import com.isode.stroke.signals.Slot1;
+import com.isode.stroke.signals.Slot2;
+import com.isode.stroke.tls.Certificate;
+import com.isode.stroke.tls.CertificateVerificationError;
+import com.isode.stroke.tls.CertificateWithKey;
+import com.isode.stroke.tls.TLSContextFactory;
+import com.isode.stroke.tls.TLSOptions;
+
+public class BOSHConnectionPool {
+
+    private final URL boshURL_;
+    private ConnectionFactory connectionFactory_;
+    private final XMLParserFactory xmlParserFactory_;
+    private final TimerFactory timerFactory_;
+    private final List<BOSHConnection> connections_ = new ArrayList<BOSHConnection>();
+    private final Map<BOSHConnection, Set<SignalConnection>> connectionsSignalConnections_
+        = new HashMap<BOSHConnection, Set<SignalConnection>>();
+    private String sid_ = "";
+    private long rid_;
+    private final List<SafeByteArray> dataQueue_ = new ArrayList<SafeByteArray>();
+    private boolean pendingTerminate_;
+    private String to_;
+    private int requestLimit_;
+    private int restartCount_;
+    private boolean pendingRestart_;
+    private List<ConnectionFactory> myConnectionFactories_;
+    private final CachingDomainNameResolver resolver_;
+    private CertificateWithKey clientCertificate_;
+    private TLSContextFactory tlsContextFactory_;
+    private TLSOptions tlsOptions_;
+    private final List<Certificate> pinnedCertificateChain_ = new ArrayList<Certificate>();
+    private CertificateVerificationError lastVerificationError_;
+    
+    public final Signal1<BOSHError> onSessionTerminated = new Signal1<BOSHError>();
+    public final Signal onSessionStarted = new Signal();
+    public final Signal1<SafeByteArray> onXMPPDataRead = new Signal1<SafeByteArray>();
+    public final Signal1<SafeByteArray> onBOSHDataRead = new Signal1<SafeByteArray>();
+    public final Signal1<SafeByteArray> onBOSHDataWritten = new Signal1<SafeByteArray>();
+    
+    private final Logger logger = Logger.getLogger(this.getClass().getName());
+
+    public BOSHConnectionPool(URL boshURL,DomainNameResolver resolver,
+            ConnectionFactory connectionFactory, XMLParserFactory parserFactory,
+            TLSContextFactory tlsFactory, TimerFactory timerFactory, EventLoop eventLoop,
+            String to,long initialRID,URL boshHTTPConnectProxyURL,
+            SafeString boshHTTPConnectProxyAuthID,SafeString boshHTTPConnectProxyAuthPassword,
+            TLSOptions tlsOptions) {
+        this(boshURL, resolver, connectionFactory, parserFactory, tlsFactory, timerFactory, 
+                eventLoop, to, initialRID, boshHTTPConnectProxyURL, boshHTTPConnectProxyAuthID, 
+                boshHTTPConnectProxyAuthPassword, tlsOptions, null);
+    }
+    
+    public BOSHConnectionPool(URL boshURL,DomainNameResolver realResolver,
+            ConnectionFactory connectionFactory, XMLParserFactory parserFactory,
+            TLSContextFactory tlsFactory, TimerFactory timerFactory, EventLoop eventLoop,
+            String to,long initialRID,URL boshHTTPConnectProxyURL,
+            SafeString boshHTTPConnectProxyAuthID,SafeString boshHTTPConnectProxyAuthPassword,
+            TLSOptions tlsOptions,HTTPTrafficFilter trafficFilter) {
+        boshURL_ = boshURL;
+        connectionFactory_ = connectionFactory;
+        xmlParserFactory_ = parserFactory;
+        timerFactory_ = timerFactory;
+        rid_ = initialRID;
+        pendingTerminate_ = false;
+        to_ = to;
+        requestLimit_ = 2;
+        restartCount_ = 0;
+        pendingRestart_ = false;
+        tlsContextFactory_ = tlsFactory;
+        tlsOptions_ = tlsOptions;
+        if (!boshHTTPConnectProxyURL.isEmpty()) {
+            this.connectionFactory_ = 
+                    new HTTPConnectProxiedConnectionFactory(realResolver, connectionFactory, 
+                            timerFactory, boshHTTPConnectProxyURL.getHost(), 
+                            URL.getPortOrDefaultPort(boshHTTPConnectProxyURL), 
+                            boshHTTPConnectProxyAuthID.getData(), 
+                            boshHTTPConnectProxyAuthPassword.getData(), trafficFilter);
+        }
+        resolver_ = new CachingDomainNameResolver(realResolver, eventLoop);
+    }
+    
+    public void open() {
+        createConnection();
+    }
+    
+    public void write(SafeByteArray data) {
+        dataQueue_.add(data);
+        tryToSendQueuedData();
+    }
+    
+    public void writeFooter() {
+        pendingTerminate_ = true;
+        tryToSendQueuedData();
+    }
+    
+    public void close() {
+        if (!sid_.isEmpty()) {
+            writeFooter();
+        }
+        else {
+            pendingTerminate_ = true;
+            List<BOSHConnection> connectionCopies = new ArrayList<BOSHConnection>(connections_);
+            for(BOSHConnection connection : connectionCopies) {
+                if (connection != null) {
+                    connection.disconnect();
+                }
+            }
+        }
+    }
+    
+    public void restartStream() {
+        BOSHConnection connection = getSuitableConnection();
+        if (connection != null) {
+            pendingRestart_ = false;
+            rid_++;
+          connection.setRID(rid_);
+          connection.restartStream();
+          restartCount_++;
+        }
+        else {
+            pendingRestart_ = true;
+        }
+    }
+    
+    public void setTLSCertificate(CertificateWithKey certWithKey) {
+        clientCertificate_ = certWithKey;
+    }
+
+    public boolean isTLSEncrypted() {
+        return !pinnedCertificateChain_.isEmpty();
+    }
+
+    public Certificate getPeerCertificate() {
+        Certificate peerCertificate = null;
+        if (!pinnedCertificateChain_.isEmpty()) {
+            peerCertificate = pinnedCertificateChain_.get(0);
+        }
+        return peerCertificate;
+    }
+    
+    
+    public List<Certificate> getPeerCertificateChain() {
+        return new ArrayList<Certificate>(pinnedCertificateChain_);
+    }
+    
+    public CertificateVerificationError getPeerCertificateVerificationError() {
+        return lastVerificationError_;
+    }
+    
+    private void handleDataRead(SafeByteArray data) {
+        onXMPPDataRead.emit(data);
+        tryToSendQueuedData(); // Will rebalance the connections 
+    }
+    
+    private void handleSessionStarted(String sid, int requests) {
+        sid_ = sid;
+        requestLimit_ = requests;
+        onSessionStarted.emit();
+    }
+    
+    private void handleBOSHDataRead(SafeByteArray data) {
+        onBOSHDataRead.emit(data);
+    }
+    
+    private void handleBOSHDataWritten(SafeByteArray data) {
+        onBOSHDataWritten.emit(data);
+    }
+    
+    private void handleSessionTerminated(BOSHError error) {
+        onSessionTerminated.emit(error);
+    }
+    
+    private void handleConnectFinished(boolean error, BOSHConnection connection) {
+        if (error) {
+            onSessionTerminated.emit(new BOSHError(BOSHError.Type.UndefinedCondition));
+        }
+        else {
+            if ((connection.getPeerCertificate() != null) && pinnedCertificateChain_.isEmpty()) {
+                pinnedCertificateChain_.clear();
+                pinnedCertificateChain_.addAll(connection.getPeerCertificateChain());
+            }
+            if (!pinnedCertificateChain_.isEmpty()) {
+                lastVerificationError_ = connection.getPeerCertificateVerficationError();
+            }
+
+            if (sid_.isEmpty()) {
+                connection.startStream(to_, rid_);
+            }
+            if (pendingRestart_) {
+                restartStream();
+            }
+            tryToSendQueuedData();
+        }
+    }
+    
+    private void handleConnectionDisconnected(boolean error, BOSHConnection connection) {
+        destroyConnection(connection);
+        if (pendingTerminate_ && sid_.isEmpty() && connections_.isEmpty()) {
+            handleSessionTerminated(null);
+        }
+        else {
+            /* We might have just freed up a connection slot to send with */
+            tryToSendQueuedData();
+        }
+    }
+    
+    private void handleHTTPError(String errorCode) {
+        handleSessionTerminated(new BOSHError(BOSHError.Type.UndefinedCondition));
+    }
+    
+    private BOSHConnection createConnection() {
+        Connector connector = Connector.create(boshURL_.getHost(), 
+                URL.getPortOrDefaultPort(boshURL_), null, resolver_, 
+                connectionFactory_, timerFactory_);
+        final BOSHConnection connection = BOSHConnection.create(boshURL_, connector, 
+                xmlParserFactory_, tlsContextFactory_, tlsOptions_);
+        Set<SignalConnection> signalConnections = new HashSet<SignalConnection>();
+        signalConnections.add(connection.onXMPPDataRead.connect(new Slot1<SafeByteArray>() {
+            
+            @Override
+            public void call(SafeByteArray data) {
+                handleDataRead(data);
+            }
+            
+        }));
+        signalConnections.add(connection.onSessionStarted.connect(new Slot2<String, Integer>() {
+            
+            @Override
+            public void call(String sid, Integer requests) {
+                handleSessionStarted(sid, requests.intValue());
+            }
+            
+        }));
+        signalConnections.add(connection.onBOSHDataRead.connect(new Slot1<SafeByteArray>() {
+
+            @Override
+            public void call(SafeByteArray data) {
+                handleBOSHDataRead(data);
+            }
+            
+        }));
+        signalConnections.add(connection.onBOSHDataWritten.connect(new Slot1<SafeByteArray>() {
+
+            @Override
+            public void call(SafeByteArray data) {
+                handleBOSHDataWritten(data);
+            }
+            
+        }));
+        signalConnections.add(connection.onDisconnected.connect(new Slot1<Boolean>() {
+
+            @Override
+            public void call(Boolean wasError) {
+                handleConnectionDisconnected(wasError.booleanValue(), connection);
+            }
+            
+        }));
+        signalConnections.add(connection.onConnectionFinished.connect(new Slot1<Boolean>() {
+
+            @Override
+            public void call(Boolean wasError) {
+                handleConnectFinished(wasError.booleanValue(), connection);
+            }
+            
+        }));
+        signalConnections.add(connection.onSessionTerminated.connect(new Slot1<BOSHConnection.BOSHError>() {
+
+            @Override
+            public void call(BOSHError error) {
+                handleSessionTerminated(error);
+            }
+            
+        }));
+        signalConnections.add(connection.onHTTPError.connect(new Slot1<String>() {
+
+            @Override
+            public void call(String httpErrorCode) {
+                handleHTTPError(httpErrorCode);
+            }
+            
+        }));
+
+        if ("https".equals(boshURL_.getScheme())) {
+            boolean success = connection.setClientCertificate(clientCertificate_);
+            logger.fine("setClientCertificate, success: " + success + "\n");
+        }
+
+        connection.connect();
+        connections_.add(connection);
+        connectionsSignalConnections_.put(connection, signalConnections);
+        return connection;
+        
+    }
+    
+    private void destroyConnection(BOSHConnection connection) {
+          while (connections_.remove(connection)) {
+              // Loop will run till all instances of connection are removed
+          }
+          Set<SignalConnection> signalConnections = connectionsSignalConnections_.remove(connection);
+          if (signalConnections != null) {
+              for (SignalConnection signalConnection : signalConnections) {
+                  if (signalConnection != null) {
+                      signalConnection.disconnect();
+                  }
+              }
+              signalConnections.clear();
+          }
+    }
+    
+    private void tryToSendQueuedData() {
+        if (sid_.isEmpty()) {
+            // If we've not got as far as stream start yet, pend 
+            return;
+        }
+
+        BOSHConnection suitableConnection = getSuitableConnection();
+        boolean toSend = !dataQueue_.isEmpty();
+        if (suitableConnection != null) {
+            if (toSend) {
+                rid_++;
+                suitableConnection.setRID(rid_);
+                SafeByteArray data = new SafeByteArray();
+                for(SafeByteArray datum : dataQueue_) {
+                    data.append(datum);
+                }
+                suitableConnection.write(data);
+                dataQueue_.clear();
+            }
+            else if (pendingTerminate_) {
+                rid_++;
+                suitableConnection.setRID(rid_);
+                suitableConnection.terminateStream();
+                sid_ = "";
+                close();
+            }
+        }
+        if (!pendingTerminate_) {
+            // Ensure there's always a session waiting to read data for us
+            boolean pending = false;
+            for(BOSHConnection connection : connections_) {
+                if (connection != null && !connection.isReadyToSend()) {
+                    pending = true;
+                }
+            }
+            if (!pending) {
+                if (restartCount_ >= 1) {
+                    // Don't open a second connection until we've restarted the stream twice - i.e. we've authed and resource bound
+                    if (suitableConnection != null) {
+                        rid_++;
+                        suitableConnection.setRID(rid_);
+                        suitableConnection.write(new SafeByteArray());
+                    }
+                    else {
+                        // My thought process I went through when writing this, to aid anyone else confused why this can happen...
+                        //
+                        // What to do here? I think this isn't possible.
+                        // If you didn't have two connections, suitable would have made one.
+                        // If you have two connections and neither is suitable, pending would be true.
+                        // If you have a non-pending connection, it's suitable.
+                        //
+                        // If I decide to do something here, remove assert above.
+                        //
+                        // Ah! Yes, because there's a period between creating the connection and it being connected. */
+                    }
+                }
+            }
+        }
+    }
+    
+    private BOSHConnection getSuitableConnection() {
+        BOSHConnection suitableConnection = null;
+        for(BOSHConnection connection : connections_) {
+            if (connection.isReadyToSend()) {
+                suitableConnection = connection;
+                break;
+            }
+        }
+
+        if (suitableConnection == null && (connections_.size() < requestLimit_)) {
+            // This is not a suitable connection because it won't have yet connected and added TLS if needed.
+            BOSHConnection newConnection = createConnection();
+            newConnection.setSID(sid_);
+        }
+        assert(connections_.size() <= requestLimit_);
+        assert((suitableConnection == null) || suitableConnection.isReadyToSend());
+        return suitableConnection;
+    }
+    
+}
diff --git a/src/com/isode/stroke/parser/BOSHBodyExtractor.java b/src/com/isode/stroke/parser/BOSHBodyExtractor.java
new file mode 100644
index 0000000..6b637b1
--- /dev/null
+++ b/src/com/isode/stroke/parser/BOSHBodyExtractor.java
@@ -0,0 +1,174 @@
+/*  Copyright (c) 2016, Isode Limited, London, England.
+ *  All rights reserved.
+ *
+ *  Acquisition and use of this software and related materials for any
+ *  purpose requires a written license agreement from Isode Limited,
+ *  or a written license from an organisation licensed by Isode Limited
+ *  to grant such a license.
+ *
+ */
+package com.isode.stroke.parser;
+
+import java.util.Arrays;
+
+import com.isode.stroke.base.ByteArray;
+
+public class BOSHBodyExtractor {
+
+    private BOSHBody body = null;
+
+    public BOSHBodyExtractor(XMLParserFactory parserFactory,ByteArray data) {
+        // Look for the opening body element
+        byte[] rawData = data.getData();
+        int i = 0;
+        while (i < rawData.length && isWhitespace((char) rawData[i])) {
+            ++i;
+        }
+        if ((rawData.length - i) < 6 || rawData[i] != '<' || rawData[i+1] != 'b' 
+                || rawData[i+2] != 'o' || rawData[i+3] != 'd' || rawData[i+4] != 'y' 
+                || !isEndCharacter((char) rawData[i+5])) {
+            return;
+        }
+        i += 5;
+
+
+        // Parse until end of element
+        boolean inSingleQuote = false;
+        boolean inDoubleQuote = false;
+        boolean endStartTagSeen = false;
+        boolean endElementSeen = false;
+
+        for (; i < rawData.length; ++i) {
+            char c = (char) rawData[i];
+            if (inSingleQuote) {
+                if (c == '\'') {
+                    inSingleQuote = false;
+                }
+            }
+            else if (inDoubleQuote) {
+                if (c == '"') {
+                    inDoubleQuote = false;
+                }
+            }
+            else if (c == '\'') {
+                inSingleQuote = true;
+            }
+            else if (c == '"') {
+                inDoubleQuote = true;
+            }
+            else if (c == '/') {
+                if (i + 1 == rawData.length || rawData[i+1] != '>') {
+                    return;
+                }
+                else {
+                    endElementSeen = true;
+                    endStartTagSeen = true;
+                    i += 2;
+                    break;
+                }
+            }
+            else if (c == '>') {
+                endStartTagSeen = true;
+                i += 1;
+                break;
+            }
+        }
+
+        if (!endStartTagSeen) {
+            return;
+        }
+
+        // Look for the end of the element
+
+        int j = rawData.length - 1;
+        if (!endElementSeen) {
+            while (isWhitespace((char) rawData[j]) && j > -1) {
+                j--;
+            }
+
+            if (j == -1 || rawData[j] != '>') {
+                return;
+            }
+            j--;
+
+            while (j > -1 && isWhitespace((char) rawData[j])) {
+                j--;
+            }
+
+            if (j < 6 || rawData[j-5] != '<' || rawData[j-4] != '/' || rawData[j-3] != 'b' 
+                    || rawData[j-2] != 'o' || rawData[j-1] != 'd' || rawData[j] != 'y' ) {
+                return;
+            }
+
+            j -= 6;
+        }
+
+        body = new BOSHBody();
+
+        if (!endElementSeen) {
+            byte[] rawBodyContent =
+                    Arrays.copyOfRange(rawData, i, j+1);
+            body.content = (new ByteArray(rawBodyContent)).toString();
+        }
+
+        BOSHBodyParserClient parserClient = new BOSHBodyParserClient(this);
+        XMLParser parser = parserFactory.createParser(parserClient);
+        String stringToParse = data.toString().substring(0, i);
+        if(!parser.parse(stringToParse)) {
+            body = null;
+        }
+    }
+
+    public static boolean isWhitespace(char c) {
+        return c == ' ' || c == '\n' || c == '\t' || c == '\r';
+    }
+
+    private static boolean isEndCharacter(char c) {
+        return isWhitespace(c) || c == '>' || c == '/';
+    }
+
+    public BOSHBody getBody() {
+        return body;
+    }
+
+    public static class BOSHBody {
+        private AttributeMap attributes = new AttributeMap();
+        private String content  = "";
+        
+        public AttributeMap getAttributes() {
+            return attributes;
+        }
+        
+        public String getContent() {
+            return content;
+        }
+        
+    }
+
+    private final static class BOSHBodyParserClient implements XMLParserClient {
+
+        private BOSHBodyParserClient(BOSHBodyExtractor bodyExtractor) {
+            bodyExtractor_ = bodyExtractor;
+        }
+
+        @Override
+        public void handleStartElement(String element, String ns,
+                AttributeMap attributes) {
+            bodyExtractor_.body.attributes = attributes;
+        }
+
+        @Override
+        public void handleEndElement(String element, String ns) {
+            // Empty Method
+        }
+
+        @Override
+        public void handleCharacterData(String data) {
+            // Empty Method
+        }
+
+        private final BOSHBodyExtractor bodyExtractor_;
+
+    }
+
+}
diff --git a/src/com/isode/stroke/parser/PlatformXMLParserFactory.java b/src/com/isode/stroke/parser/PlatformXMLParserFactory.java
index 132dbe7..68281b1 100644
--- a/src/com/isode/stroke/parser/PlatformXMLParserFactory.java
+++ b/src/com/isode/stroke/parser/PlatformXMLParserFactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010-2012, Isode Limited, London, England.
+ * Copyright (c) 2010-2016, Isode Limited, London, England.
  * All rights reserved.
  */
 /*
@@ -10,9 +10,14 @@
 package com.isode.stroke.parser;
 
 
-public class PlatformXMLParserFactory {
+public class PlatformXMLParserFactory extends XMLParserFactory {
 
     public static XMLParser createXMLParser(XMLParserClient client) {
         return new AaltoXMLParser(client);
     }
+
+    @Override
+    public XMLParser createParser(XMLParserClient xmlParserClient) {
+        return createXMLParser(xmlParserClient);
+    }
 }
diff --git a/src/com/isode/stroke/streamstack/DummyStreamLayer.java b/src/com/isode/stroke/streamstack/DummyStreamLayer.java
new file mode 100644
index 0000000..7f3dd15
--- /dev/null
+++ b/src/com/isode/stroke/streamstack/DummyStreamLayer.java
@@ -0,0 +1,51 @@
+/*  Copyright (c) 2016, Isode Limited, London, England.
+ *  All rights reserved.
+ *
+ *  Acquisition and use of this software and related materials for any
+ *  purpose requires a written license agreement from Isode Limited,
+ *  or a written license from an organisation licensed by Isode Limited
+ *  to grant such a license.
+ *
+ */
+package com.isode.stroke.streamstack;
+
+import com.isode.stroke.base.SafeByteArray;
+
+/**
+ *  The {@link DummyStreamLayer} can be used to use a {@link LowLayer} on its own, 
+ *  without a functioning parent layer. The {@link DummyStreamLayer} will serve as the 
+ *  parent layer to the {@link LowLayer} and is called when the {@link LowLayer} wants 
+ *  to write data to its parent layer.
+ */
+public class DummyStreamLayer implements HighLayer {
+
+    private LowLayer childLayer;
+    
+    public DummyStreamLayer(LowLayer lowLayer) {
+        childLayer = lowLayer;
+        childLayer.setParentLayer(this);
+    }
+    
+    @Override
+    public void handleDataRead(SafeByteArray data) {
+        // Empty Method
+    }
+
+    @Override
+    public LowLayer getChildLayer() {
+        return childLayer;
+    }
+
+    @Override
+    public void setChildLayer(LowLayer childLayer) {
+        this.childLayer = childLayer;
+    }
+
+    @Override
+    public void writeDataToChildLayer(SafeByteArray data) {
+        if (childLayer != null) {
+            childLayer.writeData(data);
+        }
+    }
+
+}
author	Alex Clayton <alex.clayton@isode.com>	2016-02-15 17:24:49 (GMT)
committer	Alex Clayton <alex.clayton@isode.com>	2016-02-29 10:39:49 (GMT)
commit	3bfe54c141dd3fa20e391312a0a84c75731e2b2a (patch)
tree	4de10e954ff540fa6e1b70c8735ac5da14b19743 /src
parent	2ebf488dfee7156fbbe0b3d3eccebe13d86a8634 (diff)
download	stroke-3bfe54c141dd3fa20e391312a0a84c75731e2b2a.zip stroke-3bfe54c141dd3fa20e391312a0a84c75731e2b2a.tar.bz2