openfire连接登陆优化方案

来源：互联网发布：天刀好看的捏脸数据编辑：程序博客网时间：2024/05/16 17:17

客户端登陆openfire，大概总共需要9个来回才完成登录。

在2G情况下，就表现为客户端登录特别慢，所以，为解决这个问题，对openfire进行了如下优化

openfire的连接、登陆过程分为几个步骤，完整报文如下，总共分为9个round trip：

===================================================================================================================

1 STREAM

RECV：<stream:stream to="jacklin-pc" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" version="1.0">
SENT：<?xml version='1.0' encoding='UTF-8'?><stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="jacklin-pc" id="96508a6d" xml:lang="en" version="1.0">
SENT：<stream:features><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"></starttls><mechanisms xmlns="urn:ietf:p
arams:xml:ns:xmpp-sasl"><mechanism>DIGEST-MD5</mechanism><mechanism>JIVE-SHAREDSECRET</mechanism><mechanism>PLAIN</mechanism><mechanism>ANONYMOUS</mechanism><mechanism>CRAM-MD5</mechanism></mechanisms><compression xmlns="http://jabber.org/features/compress"><method>zlib</method></compression><auth xmlns="http://jabber.org/features/iq-auth"/><register xmlns="http://jabber.org/features/iq-register"/></stream:features>

2 TLS

RECV：<starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"/>

SENT：<proceed xmlns="urn:ietf:params:xml:ns:xmpp-tls"/>

3 STREAM

RECV：<stream:stream to="jacklin-pc" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" version="1.0">

SENT：<?xml version='1.0' encoding='UTF-8'?><stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="jacklin-pc" id="96508a6d" xml:lang="en" version="1.0"><stream:features><mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><mechanism>DIGEST-MD5</mechanism><mechanism>JIVE-SHAREDSECRET</mechanism><mechanism>PLAIN</mechanism><mechanism>ANONYMOUS</mechanism><mechanism>CRAM-MD5</mechanism></mechanisms><compression xmlns="http://jabber.org/features/compress"><method>zlib</method></compression><auth xmlns="http://jabber.org/features/iq-auth"/><register xmlns="http://jabber.org/features/iq-register"/></stream:features>
4 SASL

RECV：<auth mechanism="PLAIN" xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cmVhbG09ImphY2tsaW4tcGMiLG5vbmNlPSJMamw2RGt4Y3hGSDZxb2dTRE55Nmw2VkYreVQ2YjROMFlTa1BBSlZqIixxb3A9ImF1dGgiLGNoYXJzZXQ9dXRmLTgsYWxnb3JpdGhtPW1kNS1zZXNz</auth>

SENT：<success xmlns="urn:ietf:params:xml:ns:xmpp-sasl"></success>
5 STREAM

RECV：<iq id="SfW08-0" type="set"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><resource>Spark 2.6.3</resource></bind></iq>

SENT：<iq type="result" id="SfW08-0" to="jacklin-pc/96508a6d"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><jid>test001@jacklin-pc/Spark 2.6.3</jid></bind></iq>
7 SESSION

RECV：<iq id="SfW08-1" type="set"><session xmlns="urn:ietf:params:xml:ns:xmpp-session"/></iq>
SENT：<iq type="result" id="SfW08-1" to="test001@jacklin-pc/Spark 2.6.3"/>
8 PRESENCE

RECV：<presence id="SfW08-6"><status>在线</status><priority>1</priority></presence>

9 ZLIB

RECV：<compress xmlns='http://jabber.org/protocol/compress'><method>zlib</method></compress>

SENT：<compressed xmlns='http://jabber.org/protocol/compress'/>

===================================================================================================================

1 STREAM优化

其中STREAM类似查询服务器功能，服务器会把服务器的特性返回给客户端，例如SASL策略，iq-auth，zlib压缩，xmpp-bind等等，其实，如果是内部定制的系统，这些特性服务器与客户端都是共知的，所以不需要查询，完全可以省略这些步骤。但是，我发现，在客户端第一次发送stream时，是需要初始化一些内容的，所以，需要再如下地方，加入如下代码：

org.jivesoftware.openfire.nio.ConnectionHandler

@Overridepublic void sessionOpened(IoSession session) throws Exception {// Create a new XML parser for the new connection. The parser will be// used by the XMPPDecoder filter.final XMLLightweightParser parser = new XMLLightweightParser(CHARSET);session.setAttribute(XML_PARSER, parser);// Create a new NIOConnection for the new sessionfinal NIOConnection connection = createNIOConnection(session);session.setAttribute(CONNECTION, connection);session.setAttribute(HANDLER, createStanzaHandler(connection));// Set the max time a connection can be idle before closing it. This// amount of seconds// is divided in two, as Openfire will ping idle clients first (at 50%// of the max idle time)// before disconnecting them (at 100% of the max idle time). This// prevents Openfire from// removing connections without warning.final int idleTime = getMaxIdleTime() / 2;if (idleTime > 0) {session.setIdleTime(IdleStatus.READER_IDLE, idleTime);}// ADD LOCALSESSION START===========================================================Log.info("[DO LOCALSESSION]");int hashCode = Thread.currentThread().hashCode();XMPPPacketReader parser1 = parsers.get(hashCode);if (parser1 == null) {parser1 = new XMPPPacketReader();parser1.setXPPFactory(factory);parsers.put(hashCode, parser1);}String msg = "<stream:stream to='jacklin-pc' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>";StanzaHandler handler = (StanzaHandler) session.getAttribute(HANDLER);try {handler.process(msg, parser1);} catch (Exception e) {Log.error("Closing connection due to error while processing message: "+ msg, e);connection.close();}// ADD LOCALSESSION END==============================================================}

此目的是让服务器在客户端建立连接阶段就初始化客户端的资源。

2 SESSION

session其实从服务器端看，只是回复了一下客户端，并没有起什么作用，所以客户端可以不发这段报文，服务器端不需要改动。服务器端处理过程如下。

org.jivesoftware.openfire.handler.IQSessionEstablishmentHandler

public class IQSessionEstablishmentHandler extends IQHandler {    private IQHandlerInfo info;    public IQSessionEstablishmentHandler() {        super("Session Establishment handler");        info = new IQHandlerInfo("session", "urn:ietf:params:xml:ns:xmpp-session");    }    @Overridepublic IQ handleIQ(IQ packet) throws UnauthorizedException {        // Just answer that the session has been activated        IQ reply = IQ.createResultIQ(packet);        return reply;    }    @Overridepublic IQHandlerInfo getInfo() {        return info;    }}

3 BIND,PRESENCE,ZLIB

其实PRESENCE和ZLIB可以在客户端BIND操作之后，服务器端直接进行，不需要客户端再次协商。所以，我在以下代码，进行了以下改动：

org.jivesoftware.openfire.handler.IQBindHandler

@Overridepublic IQ handleIQ(IQ packet) throws UnauthorizedException {LocalClientSession session = (LocalClientSession) sessionManager.getSession(packet.getFrom());// If no session was found then answer an error (if possible)if (session == null) {Log.error("Error during resource binding. Session not found in "+ sessionManager.getPreAuthenticatedKeys() + " for key "+ packet.getFrom());// This error packet will probably won't make it throughIQ reply = IQ.createResultIQ(packet);reply.setChildElement(packet.getChildElement().createCopy());reply.setError(PacketError.Condition.internal_server_error);return reply;}IQ reply = IQ.createResultIQ(packet);Element child = reply.setChildElement("bind","urn:ietf:params:xml:ns:xmpp-bind");// Check if the client specified a desired resourceString resource = packet.getChildElement().elementTextTrim("resource");if (resource == null || resource.length() == 0) {// None was defined so use the random generated resourceresource = session.getAddress().getResource();} else {// Check that the desired resource is validtry {resource = JID.resourceprep(resource);} catch (StringprepException e) {reply.setChildElement(packet.getChildElement().createCopy());reply.setError(PacketError.Condition.jid_malformed);// Send the error directly since a route does not exist at this// point.session.process(reply);return null;}}// Get the token that was generated during the SASL authenticationAuthToken authToken = session.getAuthToken();if (authToken == null) {// User must be authenticated before binding a resourcereply.setChildElement(packet.getChildElement().createCopy());reply.setError(PacketError.Condition.not_authorized);// Send the error directly since a route does not exist at this// point.session.process(reply);return reply;}if (authToken.isAnonymous()) {// User used ANONYMOUS SASL so initialize the session as an// anonymous loginsession.setAnonymousAuth();} else {String username = authToken.getUsername().toLowerCase();// If a session already exists with the requested JID, then check to// see// if we should kick it off or refuse the new connectionClientSession oldSession = routingTable.getClientRoute(new JID(username, serverName, resource, true));if (oldSession != null) {try {int conflictLimit = sessionManager.getConflictKickLimit();if (conflictLimit == SessionManager.NEVER_KICK) {reply.setChildElement(packet.getChildElement().createCopy());reply.setError(PacketError.Condition.conflict);// Send the error directly since a route does not exist// at this point.session.process(reply);return null;}int conflictCount = oldSession.incrementConflictCount();if (conflictCount > conflictLimit) {// Kick out the old connection that is conflicting with// the new oneStreamError error = new StreamError(StreamError.Condition.conflict);oldSession.deliverRawText(error.toXML());oldSession.close();} else {reply.setChildElement(packet.getChildElement().createCopy());reply.setError(PacketError.Condition.conflict);// Send the error directly since a route does not exist// at this point.session.process(reply);return null;}} catch (Exception e) {Log.error("Error during login", e);}}// If the connection was not refused due to conflict, log the user// insession.setAuthToken(authToken, resource);}child.addElement("jid").setText(session.getAddress().toString());// Send the response directly since a route does not exist at this// point.session.process(reply);// After the client has been informed, inform all listeners as well.SessionEventDispatcher.dispatchEvent(session,SessionEventDispatcher.EventType.resource_bound);// ADD COMPRESSION START================================================== session.getConnection().addCompression(); session.getConnection().startCompression(); Log.info("[DO COMPRESSION]");// ADD COMPRESSION END====================================================  // ADD PRESENCE START====================================================String domain = XMPPServer.getInstance().getServerInfo().getXMPPDomain();Presence pp = new Presence();pp.setFrom(session.getAddress().toString());// pp.setTo(domain);XMPPServer.getInstance().getPacketRouter().route(pp);Log.info("[DO PRESENCE]:"+ pp.toXML());// ADD PRESENCE END====================================================return null;}

经过以上优化之后，服务器与客户端的协商只剩下3个round trip，过程如下：

2 TLS
RECV：<starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"/>

SENT：<proceed xmlns="urn:ietf:params:xml:ns:xmpp-tls"/>

4 SASL

SENT：<success xmlns="urn:ietf:params:xml:ns:xmpp-sasl"></success>

6 BIND

RECV：<iq id="SfW08-0" type="set"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><resource>Spark 2.6.3</resource></bind></iq>
SENT：<iq type="result" id="SfW08-0" to="jacklin-pc/96508a6d"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><jid>test001@jacklin-pc/Spark 2.6.3</jid></bind></iq>

客户端按照如下节奏发送报文，并进行操作就可以了，客户端修改代码，在这里不做描述，请修改者自行尝试

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