From 4314d834724bbb5c671e7300b7de865fe53c51fb Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Tue, 8 Nov 2016 15:54:33 +0300
Subject: reorganize structure again

---
 .../main/java/com/juick/components/XMPPServer.java | 460 +++++++++++++++++++++
 .../configuration/XMPPConfiguration.java           | 107 +++++
 .../components/configuration/XMPPInitializer.java  |  33 ++
 .../java/com/juick/components/s2s/CacheEntry.java  |  19 +
 .../java/com/juick/components/s2s/CleaningUp.java  | 109 +++++
 .../java/com/juick/components/s2s/Connection.java  | 149 +++++++
 .../com/juick/components/s2s/ConnectionIn.java     | 227 ++++++++++
 .../com/juick/components/s2s/ConnectionOut.java    | 168 ++++++++
 .../java/com/juick/components/s2s/DNSQueries.java  |  47 +++
 .../java/com/juick/components/s2s/JuickBot.java    | 379 +++++++++++++++++
 10 files changed, 1698 insertions(+)
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/XMPPServer.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/configuration/XMPPConfiguration.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/configuration/XMPPInitializer.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/s2s/CacheEntry.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/s2s/CleaningUp.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/s2s/Connection.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/s2s/ConnectionIn.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/s2s/ConnectionOut.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/s2s/DNSQueries.java
 create mode 100644 juick-xmpp/src/main/java/com/juick/components/s2s/JuickBot.java

(limited to 'juick-xmpp/src')

diff --git a/juick-xmpp/src/main/java/com/juick/components/XMPPServer.java b/juick-xmpp/src/main/java/com/juick/components/XMPPServer.java
new file mode 100644
index 00000000..b892f207
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/XMPPServer.java
@@ -0,0 +1,460 @@
+package com.juick.components;
+
+import com.juick.User;
+import com.juick.server.MessagesQueries;
+import com.juick.server.SubscriptionsQueries;
+import com.juick.server.UserQueries;
+import com.juick.components.s2s.*;
+import com.juick.xmpp.*;
+import com.juick.xmpp.extensions.JuickMessage;
+import com.juick.xmpp.extensions.Nickname;
+import com.juick.xmpp.extensions.XOOB;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.springframework.beans.factory.DisposableBean;
+import org.springframework.core.env.Environment;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.stereotype.Component;
+import org.xmlpull.v1.XmlPullParserException;
+
+import javax.inject.Inject;
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.security.KeyManagementException;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.CertificateException;
+import java.util.*;
+import java.util.concurrent.ExecutorService;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author ugnich
+ */
+@Component
+public class XMPPServer implements DisposableBean, Stream.StreamListener,
+        Message.MessageListener, Iq.IqListener, Presence.PresenceListener {
+
+    private static final Logger logger = Logger.getLogger(XMPPServer.class.getName());
+
+    public ExecutorService service;
+    private StreamComponent router;
+    JuickBot bot;
+
+    public String HOSTNAME, componentName;
+    public String STATSFILE = null;
+    public String keystore;
+    public String keystorePassword;
+    public List<String> brokenSSLhosts;
+    public List<String> bannedHosts;
+    private final List<ConnectionIn> inConnections = Collections.synchronizedList(new ArrayList<>());
+    private final List<ConnectionOut> outConnections = Collections.synchronizedList(new ArrayList<>());
+    private final List<CacheEntry> outCache = Collections.synchronizedList(new ArrayList<>());
+    @Inject
+    public JdbcTemplate jdbc;
+    final public HashMap<String, StanzaChild> childParsers = new HashMap<>();
+
+    @Inject
+    public XMPPServer(Environment env, ExecutorService service) {
+        this.service = service;
+        logger.info("component initialized");
+        try {
+            HOSTNAME = env.getProperty("hostname");
+            componentName = env.getProperty("componentname");
+            int componentPort = NumberUtils.toInt(env.getProperty("component_port"), 5347);
+            int s2sPort = NumberUtils.toInt(env.getProperty("s2s_port"), 5269);
+            JID Jid = new JID(env.getProperty("xmppbot_jid"));
+            STATSFILE = env.getProperty("statsfile");
+            keystore = env.getProperty("keystore");
+            keystorePassword = env.getProperty("keystore_password");
+            brokenSSLhosts = Arrays.asList(env.getProperty("broken_ssl_hosts", "").split(","));
+            bannedHosts = Arrays.asList(env.getProperty("banned_hosts", "").split(","));
+            bot = new JuickBot(this, Jid);
+
+            childParsers.put(JuickMessage.XMLNS, new JuickMessage());
+
+            service.submit(() -> {
+                try {
+                    Socket routerSocket = new Socket("localhost", componentPort);
+                    router = new StreamComponent(new JID("s2s"), routerSocket.getInputStream(), routerSocket.getOutputStream(), env.getProperty("xmpp_password"));
+                    router.addChildParser(new JuickMessage());
+                    router.addListener((Stream.StreamListener) this);
+                    router.addListener((Message.MessageListener) this);
+                    router.addListener((Iq.IqListener) this);
+                    router.startParsing();
+                } catch (IOException e) {
+                    logger.log(Level.SEVERE, "router error", e);
+                }
+            });
+            service.submit(() -> {
+                final ServerSocket listener = new ServerSocket(s2sPort);
+                logger.info("s2s listener ready");
+                while (true) {
+                    try {
+                        Socket socket = listener.accept();
+                        ConnectionIn client = new ConnectionIn(this, bot, socket);
+                        addConnectionIn(client);
+                        service.submit(client);
+                    } catch (Exception e) {
+                        logger.log(Level.SEVERE, "s2s error", e);
+                    }
+                }
+            });
+            service.submit(new CleaningUp(this));
+
+        } catch (Exception e) {
+            logger.log(Level.SEVERE, "XMPPComponent error", e);
+        }
+    }
+
+    public void addConnectionIn(ConnectionIn c) {
+        synchronized (getInConnections()) {
+            getInConnections().add(c);
+        }
+    }
+
+    public void addConnectionOut(ConnectionOut c) {
+        synchronized (getOutConnections()) {
+            getOutConnections().add(c);
+        }
+    }
+
+    public void removeConnectionIn(ConnectionIn c) {
+        synchronized (getInConnections()) {
+            getInConnections().remove(c);
+        }
+    }
+
+    public void removeConnectionOut(ConnectionOut c) {
+        synchronized (getOutConnections()) {
+            getOutConnections().remove(c);
+        }
+    }
+
+    public String getFromCache(String hostname) {
+        CacheEntry ret = null;
+        synchronized (getOutCache()) {
+            for (Iterator<CacheEntry> i = getOutCache().iterator(); i.hasNext();) {
+                CacheEntry c = i.next();
+                if (c.hostname != null && c.hostname.equals(hostname)) {
+                    ret = c;
+                    i.remove();
+                    break;
+                }
+            }
+        }
+        return (ret != null) ? ret.xml : null;
+    }
+
+    public ConnectionOut getConnectionOut(String hostname, boolean needReady) {
+        synchronized (getOutConnections()) {
+            for (ConnectionOut c : getOutConnections()) {
+                if (c.to != null && c.to.equals(hostname) && (!needReady || c.streamReady)) {
+                    return c;
+                }
+            }
+        }
+        return null;
+    }
+
+    public ConnectionIn getConnectionIn(String streamID) {
+        synchronized (getInConnections()) {
+            for (ConnectionIn c : getInConnections()) {
+                if (c.streamID != null && c.streamID.equals(streamID)) {
+                    return c;
+                }
+            }
+        }
+        return null;
+    }
+
+    public void sendOut(Stanza s) {
+        sendOut(s.to.Host, s.toString());
+    }
+
+    public void sendOut(String hostname, String xml) {
+        boolean haveAnyConn = false;
+
+        ConnectionOut connOut = null;
+        synchronized (getOutConnections()) {
+            for (ConnectionOut c : getOutConnections()) {
+                if (c.to != null && c.to.equals(hostname)) {
+                    if (c.streamReady) {
+                        connOut = c;
+                        break;
+                    } else {
+                        haveAnyConn = true;
+                        break;
+                    }
+                }
+            }
+        }
+        if (connOut != null) {
+            try {
+                connOut.sendStanza(xml);
+            } catch (IOException e) {
+                logger.warning("STREAM TO " + connOut.to + " " + connOut.streamID + " ERROR: " + e.toString());
+            }
+            return;
+        }
+
+        boolean haveCache = false;
+        synchronized (getOutCache()) {
+            for (CacheEntry c : getOutCache()) {
+                if (c.hostname != null && c.hostname.equals(hostname)) {
+                    c.xml += xml;
+                    c.tsUpdated = System.currentTimeMillis();
+                    haveCache = true;
+                    break;
+                }
+            }
+            if (!haveCache) {
+                getOutCache().add(new CacheEntry(hostname, xml));
+            }
+        }
+
+        if (!haveAnyConn) {
+            try {
+                ConnectionOut connectionOut = new ConnectionOut(this, hostname);
+                service.submit(connectionOut);
+            } catch (CertificateException | UnrecoverableKeyException | NoSuchAlgorithmException | XmlPullParserException | KeyStoreException | KeyManagementException | IOException e) {
+                logger.log(Level.SEVERE, "s2s out error", e);
+            }
+        }
+    }
+
+
+    @Override
+    public void destroy() {
+        synchronized (getOutConnections()) {
+            for (Iterator<ConnectionOut> i = getOutConnections().iterator(); i.hasNext();) {
+                ConnectionOut c = i.next();
+                c.closeConnection();
+                i.remove();
+            }
+        }
+
+        synchronized (getInConnections()) {
+            for (Iterator<ConnectionIn> i = getInConnections().iterator(); i.hasNext();) {
+                ConnectionIn c = i.next();
+                c.closeConnection();
+                i.remove();
+            }
+        }
+
+        try {
+            closeRouterConnection();
+        } catch (IOException e) {
+            logger.log(Level.WARNING, "router warning", e);
+        }
+        service.shutdown();
+        logger.info("component destroyed");
+    }
+    public void closeRouterConnection() throws IOException {
+        getRouter().logoff();
+    }
+
+    public void sendJuickMessage(JuickMessage jmsg) {
+        List<String> jids = new ArrayList<>();
+
+        if (jmsg.FriendsOnly) {
+            jids = SubscriptionsQueries.getJIDSubscribedToUser(jdbc, jmsg.getUser().getUID(), jmsg.FriendsOnly);
+        } else {
+            List<User> users = SubscriptionsQueries.getSubscribedUsers(jdbc, jmsg.getUser().getUID(), jmsg.getMID());
+            for (User user : users) {
+                for (String jid : UserQueries.getJIDsbyUID(jdbc, user.getUID())) {
+                    jids.add(jid);
+                }
+            }
+        }
+
+        String txt = "@" + jmsg.getUser().getUName() + ":" + jmsg.getTagsString() + "\n";
+        String attachment = jmsg.getAttachmentURL();
+        if (attachment != null) {
+            txt += attachment + "\n";
+        }
+        txt += jmsg.getText() + "\n\n";
+        txt += "#" + jmsg.getMID() + " http://juick.com/" + jmsg.getMID();
+
+        Nickname nick = new Nickname();
+        nick.Nickname = "@" + jmsg.getUser().getUName();
+
+        com.juick.xmpp.Message msg = new com.juick.xmpp.Message();
+        msg.from = bot.JuickJID;
+        msg.body = txt;
+        msg.type = Message.Type.chat;
+        msg.thread = "juick-" + jmsg.getMID();
+        msg.addChild(jmsg);
+        msg.addChild(nick);
+        if (attachment != null) {
+            XOOB oob = new XOOB();
+            oob.URL = attachment;
+            msg.addChild(oob);
+        }
+
+        for (String jid : jids) {
+            msg.to = new JID(jid);
+            sendOut(msg);
+        }
+    }
+
+    public void sendJuickComment(JuickMessage jmsg) {
+        List<User> users;
+        String replyQuote;
+        String replyTo;
+
+        users = SubscriptionsQueries.getUsersSubscribedToComments(jdbc, jmsg.getMID(), jmsg.getUser().getUID());
+        com.juick.Message replyMessage = jmsg.ReplyTo > 0 ? MessagesQueries.getReply(jdbc, jmsg.getMID(), jmsg.ReplyTo)
+                : MessagesQueries.getMessage(jdbc, jmsg.getMID());
+        replyTo = replyMessage.getUser().getUName();
+        replyQuote = getReplyQuote(replyMessage);
+
+        String txt = "Reply by @" + jmsg.getUser().getUName() + ":\n" + replyQuote + "\n@" + replyTo + " ";
+        String attachment = jmsg.getAttachmentURL();
+        if (attachment != null) {
+            txt += attachment + "\n";
+        }
+        txt += jmsg.getText() + "\n\n" + "#" + jmsg.getMID() + "/" + jmsg.getRID() + " http://juick.com/" + jmsg.getMID() + "#" + jmsg.getRID();
+
+        com.juick.xmpp.Message msg = new com.juick.xmpp.Message();
+        msg.from = bot.JuickJID;
+        msg.body = txt;
+        msg.type = Message.Type.chat;
+        msg.addChild(jmsg);
+        for (User user : users) {
+            for (String jid : UserQueries.getJIDsbyUID(jdbc, user.getUID())) {
+                msg.to = new JID(jid);
+                sendOut(msg);
+            }
+        }
+    }
+
+    private String getReplyQuote(com.juick.Message q) {
+        String quote = q.getText();
+        if (quote.length() > 50) {
+            quote = ">" + quote.substring(0, 47).replace('\n', ' ') + "...\n";
+        } else if (quote.length() > 0) {
+            quote = ">" + quote.replace('\n', ' ') + "\n";
+        }
+        return quote;
+    }
+
+    public void sendJuickRecommendation(JuickMessage recomm) {
+        List<User> users;
+        JuickMessage jmsg;
+        jmsg = new JuickMessage(MessagesQueries.getMessage(jdbc, recomm.getMID()));
+        users = SubscriptionsQueries.getUsersSubscribedToUserRecommendations(jdbc,
+                recomm.getUser().getUID(), recomm.getMID(), jmsg.getUser().getUID());
+
+        String txt = "Recommended by @" + recomm.getUser().getUName() + ":\n";
+        txt += "@" + jmsg.getUser().getUName() + ":" + jmsg.getTagsString() + "\n";
+        String attachment = jmsg.getAttachmentURL();
+        if (attachment != null) {
+            txt += attachment + "\n";
+        }
+        txt += jmsg.getText() + "\n\n";
+        txt += "#" + jmsg.getMID();
+        if (jmsg.Replies > 0) {
+            if (jmsg.Replies % 10 == 1 && jmsg.Replies % 100 != 11) {
+                txt += " (" + jmsg.Replies + " reply)";
+            } else {
+                txt += " (" + jmsg.Replies + " replies)";
+            }
+        }
+        txt += " http://juick.com/" + jmsg.getMID();
+
+        Nickname nick = new Nickname();
+        nick.Nickname = "@" + jmsg.getUser().getUName();
+
+        com.juick.xmpp.Message msg = new com.juick.xmpp.Message();
+        msg.from = bot.JuickJID;
+        msg.body = txt;
+        msg.type = Message.Type.chat;
+        msg.thread = "juick-" + jmsg.getMID();
+        msg.addChild(jmsg);
+        msg.addChild(nick);
+        if (attachment != null) {
+            XOOB oob = new XOOB();
+            oob.URL = attachment;
+            msg.addChild(oob);
+        }
+
+        for (User user : users) {
+            for (String jid : UserQueries.getJIDsbyUID(jdbc, user.getUID())) {
+                msg.to = new JID(jid);
+                sendOut(msg);
+            }
+        }
+    }
+
+    @Override
+    public boolean onIq(Iq iq) {
+        JID jid = iq.to;
+        if (!jid.Host.equals(componentName)) {
+            logger.info("STREAM ROUTER (IQ): " + iq.toString());
+            sendOut(iq);
+        }
+        return false;
+    }
+
+    @Override
+    public void onMessage(Message xmsg) {
+        logger.info("STREAM ROUTER (PROCESS): " + xmsg.toString());
+        JuickMessage jmsg = (JuickMessage) xmsg.getChild(JuickMessage.XMLNS);
+        JID jid = xmsg.to;
+        if (jid.Host.equals(componentName)) {
+            if (jmsg != null) {
+                if (jid.Username != null && jid.Username.equals("recomm")) {
+                    sendJuickRecommendation(jmsg);
+                } else {
+                    if (jmsg.getRID() > 0) {
+                        sendJuickComment(jmsg);
+                    } else if (jmsg.getMID() > 0) {
+                        sendJuickMessage(jmsg);
+                    }
+                }
+            }
+        } else {
+            sendOut(xmsg);
+        }
+    }
+
+    @Override
+    public void onPresence(Presence presence) {
+        JID jid = presence.to;
+        if (!jid.Host.equals(componentName)) {
+            logger.info("STREAM ROUTER (PRESENCE): " + presence.toString());
+            sendOut(presence);
+        }
+    }
+
+    @Override
+    public void onStreamReady() {
+        logger.info("STREAM ROUTER (READY)");
+    }
+
+    @Override
+    public void onStreamFail(Exception ex) {
+        logger.log(Level.SEVERE, "STREAM ROUTER (FAIL)", ex);
+    }
+
+    public StreamComponent getRouter() {
+        return router;
+    }
+
+    public List<ConnectionIn> getInConnections() {
+        return inConnections;
+    }
+
+    public List<ConnectionOut> getOutConnections() {
+        return outConnections;
+    }
+
+    public List<CacheEntry> getOutCache() {
+        return outCache;
+    }
+
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/configuration/XMPPConfiguration.java b/juick-xmpp/src/main/java/com/juick/components/configuration/XMPPConfiguration.java
new file mode 100644
index 00000000..1695de6a
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/configuration/XMPPConfiguration.java
@@ -0,0 +1,107 @@
+package com.juick.components.configuration;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
+import com.juick.components.XMPPServer;
+import com.mitchellbosecke.pebble.PebbleEngine;
+import com.mitchellbosecke.pebble.loader.Loader;
+import com.mitchellbosecke.pebble.loader.ServletLoader;
+import com.mitchellbosecke.pebble.spring4.PebbleViewResolver;
+import com.mitchellbosecke.pebble.spring4.extension.SpringExtension;
+import org.apache.commons.dbcp2.BasicDataSource;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.web.servlet.ViewResolver;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+
+import javax.inject.Inject;
+import javax.servlet.ServletContext;
+import java.util.List;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+/**
+ * Created by vitalyster on 28.06.2016.
+ */
+@Configuration
+@ComponentScan(basePackages = {"com.juick"})
+@PropertySource("classpath:juick.conf")
+public class XMPPConfiguration extends WebMvcConfigurationSupport {
+    @Inject
+    Environment env;
+    @Inject
+    ExecutorService service;
+
+    @Bean
+    JdbcTemplate jdbc() {
+        BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(env.getProperty("datasource_driver", "com.mysql.jdbc.Driver"));
+        dataSource.setUrl(env.getProperty("datasource_url"));
+        return new JdbcTemplate(dataSource);
+    }
+    @Inject
+    private ServletContext servletContext;
+
+    @Bean
+    public Loader templateLoader(){
+        return new ServletLoader(servletContext);
+    }
+
+    @Bean
+    public SpringExtension springExtension() {
+        return new SpringExtension();
+    }
+
+    @Bean
+    public PebbleEngine pebbleEngine() {
+        return new PebbleEngine.Builder()
+                .loader(this.templateLoader())
+                .extension(springExtension())
+                .build();
+    }
+
+    @Bean
+    public ViewResolver viewResolver() {
+        PebbleViewResolver viewResolver = new PebbleViewResolver();
+        viewResolver.setPrefix("/WEB-INF/templates/");
+        viewResolver.setSuffix(".html");
+        viewResolver.setPebbleEngine(pebbleEngine());
+        return viewResolver;
+    }
+    @Bean
+    public XMPPServer xmpp() {
+        return new XMPPServer(env, service);
+    }
+    @Bean
+    public ExecutorService service() {
+        return Executors.newCachedThreadPool();
+    }
+
+    @Override
+    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.setOrder(0);
+        registry.addResourceHandler("/scripts.js").addResourceLocations("/");
+        registry.addResourceHandler("/style.css").addResourceLocations("/");
+    }
+
+    @Override
+    protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
+        Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder()
+                .serializationInclusion(JsonInclude.Include.NON_DEFAULT)
+                .serializationInclusion(JsonInclude.Include.NON_NULL)
+                .serializationInclusion(JsonInclude.Include.NON_ABSENT)
+                .serializationInclusion(JsonInclude.Include.NON_EMPTY);
+        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(builder.build());
+        converter.getObjectMapper().registerModule(new Jdk8Module());
+        converters.add(converter);
+        super.configureMessageConverters(converters);
+    }
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/configuration/XMPPInitializer.java b/juick-xmpp/src/main/java/com/juick/components/configuration/XMPPInitializer.java
new file mode 100644
index 00000000..604516c4
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/configuration/XMPPInitializer.java
@@ -0,0 +1,33 @@
+package com.juick.components.configuration;
+import org.springframework.web.filter.CharacterEncodingFilter;
+import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+
+import javax.servlet.Filter;
+
+/**
+ * Created by vt on 09/02/16.
+ */
+public class XMPPInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
+    @Override
+    protected Class<?>[] getRootConfigClasses() {
+        return new Class[] {XMPPConfiguration.class};
+    }
+
+    @Override
+    protected Class<?>[] getServletConfigClasses() {
+        return null;
+    }
+
+    @Override
+    protected String[] getServletMappings() {
+        return new String[] {
+                "/"
+        };
+    }
+    @Override
+    protected Filter[] getServletFilters() {
+        CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
+        characterEncodingFilter.setEncoding("UTF-8");
+        return new Filter[] { characterEncodingFilter};
+    }
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/s2s/CacheEntry.java b/juick-xmpp/src/main/java/com/juick/components/s2s/CacheEntry.java
new file mode 100644
index 00000000..8a10182c
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/s2s/CacheEntry.java
@@ -0,0 +1,19 @@
+package com.juick.components.s2s;
+
+/**
+ *
+ * @author ugnich
+ */
+public class CacheEntry {
+
+    public String hostname;
+    public long tsCreated;
+    public long tsUpdated;
+    public String xml;
+
+    public CacheEntry(String hostname, String xml) {
+        this.hostname = hostname;
+        this.tsCreated = this.tsUpdated = System.currentTimeMillis();
+        this.xml = xml;
+    }
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/s2s/CleaningUp.java b/juick-xmpp/src/main/java/com/juick/components/s2s/CleaningUp.java
new file mode 100644
index 00000000..031a7b34
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/s2s/CleaningUp.java
@@ -0,0 +1,109 @@
+package com.juick.components.s2s;
+
+import com.juick.components.XMPPServer;
+
+import java.io.FileNotFoundException;
+import java.io.PrintWriter;
+import java.io.UnsupportedEncodingException;
+import java.util.Iterator;
+
+/**
+ *
+ * @author ugnich
+ */
+public class CleaningUp implements Runnable {
+    XMPPServer xmpp;
+    
+    public CleaningUp(XMPPServer xmpp) {
+        this.xmpp = xmpp;
+    }
+
+    @Override
+    public void run() {
+        while (true) {
+            try {
+                PrintWriter statsFile = new PrintWriter(xmpp.STATSFILE, "UTF-8");
+                statsFile.write("<html><body><h2>Threads: " + Thread.activeCount() + "</h2>");
+                statsFile.write("<h2>Out (" + xmpp.getOutConnections().size() + ")</h2><table border=1><tr><th>to</th><th>sid</th><th>inactive</th><th>out packets</th><th>out bytes</th></tr>");
+
+                long now = System.currentTimeMillis();
+
+                synchronized (xmpp.getOutConnections()) {
+                    for (Iterator<ConnectionOut> i = xmpp.getOutConnections().iterator(); i.hasNext();) {
+                        ConnectionOut c = i.next();
+                        int inactive = (int) ((double) (now - c.tsLocalData) / 1000.0);
+                        if (inactive > 900) {
+                            c.closeConnection();
+                            i.remove();
+                        } else {
+                            statsFile.write("  <tr>");
+                            statsFile.write("    <td>" + c.to + "</td>\n");
+                            statsFile.write("    <td>" + c.streamID + "</td>\n");
+                            statsFile.write("    <td>" + inactive + "</td>\n");
+                            statsFile.write("    <td>" + c.packetsLocal + "</td>\n");
+                            statsFile.write("    <td>" + c.bytesLocal + "</td>\n");
+                            statsFile.write("  <tr>");
+                        }
+                    }
+                }
+
+                statsFile.write("</table><h2>In (" + xmpp.getInConnections().size() + ")</h2><table border=1><tr><th>from</th><th>sid</th><th>inactive</th><th>in packets</th></tr>");
+
+                synchronized (xmpp.getInConnections()) {
+                    for (Iterator<ConnectionIn> i = xmpp.getInConnections().iterator(); i.hasNext();) {
+                        ConnectionIn c = i.next();
+                        int inactive = (int) ((double) (now - c.tsRemoteData) / 1000.0);
+                        if (inactive > 900) {
+                            c.closeConnection();
+                            i.remove();
+                        } else {
+                            statsFile.write("  <tr>");
+                            if (c.from.isEmpty()) {
+                                statsFile.write("    <td>&nbsp;</td>\n");
+                            } else if (c.from.size() == 1) {
+                                statsFile.write("    <td>" + c.from.get(0) + "</td>\n");
+                            } else {
+                                String out = "    <td>";
+                                for (int n = 0; n < c.from.size(); n++) {
+                                    if (n > 0) {
+                                        out += "<br/>";
+                                    }
+                                    out += c.from.get(n);
+                                }
+                                statsFile.write(out + "</td>\n");
+                            }
+                            statsFile.write("    <td>" + c.streamID + "</td>\n");
+                            statsFile.write("    <td>" + inactive + "</td>\n");
+                            statsFile.write("    <td>" + c.packetsRemote + "</td>\n");
+                            statsFile.write("  <tr>");
+                        }
+                    }
+                }
+
+                statsFile.write("</table><h2>Cache (" + xmpp.getOutCache().size() + ")</h2><table border=1><tr><th>host</th><th>live</th><th>size</th></tr>");
+
+                synchronized (xmpp.getOutCache()) {
+                    for (Iterator<CacheEntry> i = xmpp.getOutCache().iterator(); i.hasNext();) {
+                        CacheEntry c = i.next();
+                        int inactive = (int) ((double) (now - c.tsCreated) / 1000.0);
+                        if (inactive > 600) {
+                            i.remove();
+                        } else {
+                            statsFile.write("<tr><td>" + c.hostname + "</td><td>" + inactive + "</td><td>" + c.xml.length() + "</td></tr>");
+                        }
+                    }
+                }
+
+                statsFile.write("</table></body></html>");
+                statsFile.close();
+
+                try {
+                    Thread.sleep(10000);
+                } catch (InterruptedException e) {
+                }
+            } catch (FileNotFoundException e) {
+            } catch (UnsupportedEncodingException e) {
+            }
+        }
+    }
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/s2s/Connection.java b/juick-xmpp/src/main/java/com/juick/components/s2s/Connection.java
new file mode 100644
index 00000000..0c1f3d4d
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/s2s/Connection.java
@@ -0,0 +1,149 @@
+package com.juick.components.s2s;
+
+import com.juick.components.XMPPServer;
+import org.xmlpull.mxp1.MXParser;
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.X509TrustManager;
+import java.io.*;
+import java.net.Socket;
+import java.nio.charset.Charset;
+import java.security.*;
+import java.security.cert.CertificateException;
+import java.util.UUID;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author ugnich
+ */
+public class Connection {
+
+    protected static final Logger logger = Logger.getLogger(Connection.class.getName());
+
+    public String streamID;
+    public long tsCreated = 0;
+    public long tsLocalData = 0;
+    public long bytesLocal = 0;
+    public long packetsLocal = 0;
+    XMPPServer xmpp;
+    Socket socket;
+    public static final String NS_DB = "jabber:server:dialback";
+    public static final String NS_TLS = "urn:ietf:params:xml:ns:xmpp-tls";
+    public static final String NS_STREAM = "http://etherx.jabber.org/streams";
+    XmlPullParser parser = new MXParser();
+    OutputStreamWriter writer;
+    private boolean secured = false;
+    SSLContext sc;
+    private TrustManager[] trustAllCerts = new TrustManager[]{
+            new X509TrustManager() {
+                public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {
+                }
+
+                public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {
+                }
+                public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+                    return null;
+                }
+            }
+    };
+
+
+    public Connection(XMPPServer xmpp) throws XmlPullParserException, KeyStoreException, CertificateException, NoSuchAlgorithmException, IOException, UnrecoverableKeyException, KeyManagementException {
+        this.xmpp = xmpp;
+        tsCreated = System.currentTimeMillis();
+        parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
+        KeyStore ks = KeyStore.getInstance("JKS");
+        try (InputStream ksIs = new FileInputStream(xmpp.keystore)) {
+            ks.load(ksIs, xmpp.keystorePassword.toCharArray());
+            KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory
+                    .getDefaultAlgorithm());
+            kmf.init(ks, xmpp.keystorePassword.toCharArray());
+            sc = SSLContext.getInstance("TLSv1.2");
+            sc.init(kmf.getKeyManagers(), trustAllCerts, new SecureRandom());
+        } catch (Exception e) {
+            logger.warning("tls unavailable");
+        }
+    }
+
+    public void logParser() {
+        if (streamID == null) {
+            return;
+        }
+        String tag = "IN: <" + parser.getName();
+        for (int i = 0; i < parser.getAttributeCount(); i++) {
+            tag += " " + parser.getAttributeName(i) + "=\"" + parser.getAttributeValue(i) + "\"";
+        }
+        tag += ">...</" + parser.getName() + ">\n";
+        logger.fine(tag);
+    }
+
+    public void sendStanza(String xml) throws IOException {
+        if (streamID != null) {
+            logger.fine("OUT: " + xml + "\n");
+        }
+        writer.write(xml);
+        writer.flush();
+        tsLocalData = System.currentTimeMillis();
+        bytesLocal += xml.length();
+        packetsLocal++;
+    }
+
+    public void closeConnection() {
+        if (streamID != null) {
+            logger.info(String.format("CLOSING STREAM %s", streamID));
+        }
+
+        try {
+            writer.write("</stream:stream>");
+        } catch (Exception e) {
+        }
+
+        try {
+            writer.close();
+        } catch (Exception e) {
+        }
+
+        try {
+            socket.close();
+        } catch (Exception e) {
+        }
+    }
+
+    static String generateDialbackKey(String to, String from, String id) throws Exception {
+        Mac hmacSha256 = Mac.getInstance("hmacSHA256");
+
+        SecretKeySpec secret_key = new SecretKeySpec("$UppPerSeCCret4".getBytes(), "SHA-256");
+        hmacSha256.init(secret_key);
+        byte key[] = hmacSha256.doFinal((to + " " + from + " " + id).getBytes());
+
+        StringBuilder hexkey = new StringBuilder();
+        for (int i = 0; i < key.length; i++) {
+            hexkey.append(Integer.toHexString(0xFF & key[i]));
+        }
+
+        return hexkey.toString();
+    }
+
+    public boolean isSecured() {
+        return secured;
+    }
+
+    public void setSecured(boolean secured) {
+        this.secured = secured;
+    }
+
+    public void restartParser() throws XmlPullParserException, IOException {
+        parser = new MXParser();
+        parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
+        parser.setInput(new InputStreamReader(socket.getInputStream()));
+        writer = new OutputStreamWriter(socket.getOutputStream(), Charset.forName("UTF-8"));
+        streamID = UUID.randomUUID().toString();
+    }
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/s2s/ConnectionIn.java b/juick-xmpp/src/main/java/com/juick/components/s2s/ConnectionIn.java
new file mode 100644
index 00000000..41336582
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/s2s/ConnectionIn.java
@@ -0,0 +1,227 @@
+package com.juick.components.s2s;
+
+import com.juick.components.XMPPServer;
+import com.juick.xmpp.Iq;
+import com.juick.xmpp.JID;
+import com.juick.xmpp.Message;
+import com.juick.xmpp.Presence;
+import com.juick.xmpp.utils.XmlUtils;
+import org.xmlpull.v1.XmlPullParser;
+
+import javax.net.ssl.SSLException;
+import javax.net.ssl.SSLSocket;
+import java.io.EOFException;
+import java.io.IOException;
+import java.net.Socket;
+import java.net.SocketException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author ugnich
+ */
+public class ConnectionIn extends Connection implements Runnable {
+
+    private static final Logger LOGGER = Logger.getLogger(ConnectionIn.class.getName());
+
+    final public List<String> from = new ArrayList<>();
+    public long tsRemoteData = 0;
+    public long packetsRemote = 0;
+    JuickBot bot;
+
+    public ConnectionIn(XMPPServer xmpp, JuickBot bot, Socket socket) throws Exception {
+        super(xmpp);
+        this.bot = bot;
+        this.socket = socket;
+        streamID = UUID.randomUUID().toString();
+        restartParser();
+    }
+
+    @Override
+    public void run() {
+        LOGGER.info("STREAM FROM ? " + streamID + " START");
+        try {
+            parser.next(); // stream:stream
+            updateTsRemoteData();
+            if (!parser.getName().equals("stream")
+                    || !parser.getNamespace("stream").equals(NS_STREAM)) {
+//                    || !parser.getAttributeValue(null, "version").equals("1.0")
+//                    || !parser.getAttributeValue(null, "to").equals(Main.HOSTNAME)) {
+                throw new Exception("STREAM FROM ? " + streamID + " INVALID FIRST PACKET");
+            }
+            boolean xmppversionnew = parser.getAttributeValue(null, "version") != null;
+            String from = parser.getAttributeValue(null, "from");
+
+            if (xmpp.bannedHosts.contains(from)) {
+                closeConnection();
+                return;
+            }
+            sendOpenStream(from, xmppversionnew);
+
+            while (parser.next() != XmlPullParser.END_DOCUMENT) {
+                updateTsRemoteData();
+                if (parser.getEventType() != XmlPullParser.START_TAG) {
+                    continue;
+                }
+                logParser();
+
+                packetsRemote++;
+
+                String tag = parser.getName();
+                if (tag.equals("result") && parser.getNamespace().equals(NS_DB)) {
+                    String dfrom = parser.getAttributeValue(null, "from");
+                    String to = parser.getAttributeValue(null, "to");
+                    LOGGER.info("STREAM FROM " + dfrom + " TO " + to + " " + streamID + " ASKING FOR DIALBACK");
+                    if (dfrom.endsWith(xmpp.HOSTNAME) && (dfrom.equals(xmpp.HOSTNAME) || dfrom.endsWith("." + xmpp.HOSTNAME))) {
+                        break;
+                    }
+                    if (to != null && to.equals(xmpp.HOSTNAME)) {
+                        String dbKey = XmlUtils.getTagText(parser);
+                        updateTsRemoteData();
+
+                        ConnectionOut c = xmpp.getConnectionOut(dfrom, false);
+                        if (c != null) {
+                            c.sendDialbackVerify(streamID, dbKey);
+                        } else {
+                            c = new ConnectionOut(xmpp, dfrom, streamID, dbKey);
+                            xmpp.service.submit(c);
+                        }
+                    } else {
+                        throw new HostUnknownException("STREAM FROM " + dfrom + " " + streamID + " INVALID TO " + to);
+                    }
+                } else if (tag.equals("verify") && parser.getNamespace().equals(NS_DB)) {
+                    String vfrom = parser.getAttributeValue(null, "from");
+                    String vto = parser.getAttributeValue(null, "to");
+                    String vid = parser.getAttributeValue(null, "id");
+                    String vkey = XmlUtils.getTagText(parser);
+                    updateTsRemoteData();
+                    boolean valid = false;
+                    if (vfrom != null && vto != null && vid != null && vkey != null) {
+                        String vkey2 = generateDialbackKey(vfrom, vto, vid);
+                        valid = vkey.equals(vkey2);
+                    }
+                    if (valid) {
+                        sendStanza("<db:verify from='" + vto + "' to='" + vfrom + "' id='" + vid + "' type='valid'/>");
+                        LOGGER.info("STREAM FROM " + vfrom + " " + streamID + " DIALBACK VERIFY VALID");
+                    } else {
+                        sendStanza("<db:verify from='" + vto + "' to='" + vfrom + "' id='" + vid + "' type='invalid'/>");
+                        LOGGER.warning("STREAM FROM " + vfrom + " " + streamID + " DIALBACK VERIFY INVALID");
+                    }
+                } else if (tag.equals("presence") && checkFromTo(parser)) {
+                    Presence p = Presence.parse(parser, null);
+                    if (p != null && (p.type == null || !p.type.equals(Presence.Type.error))) {
+                        bot.incomingPresence(p);
+                    }
+                } else if (tag.equals("message") && checkFromTo(parser)) {
+                    updateTsRemoteData();
+                    Message msg = Message.parse(parser, xmpp.childParsers);
+                    if (msg != null && (msg.type == null || !msg.type.equals(Message.Type.error))) {
+                        LOGGER.info("STREAM " + streamID + ": " + msg.toString());
+                        if (!bot.incomingMessage(msg)) {
+                            xmpp.getRouter().send(msg.toString());
+                        }
+                    }
+                } else if (tag.equals("iq") && checkFromTo(parser)) {
+                    updateTsRemoteData();
+                    String type = parser.getAttributeValue(null, "type");
+                    String xml = XmlUtils.parseToString(parser, true);
+                    if (type == null || !type.equals(Iq.Type.error)) {
+                        LOGGER.info("STREAM " + streamID + ": " + xml);
+                        xmpp.getRouter().send(xml);
+                    }
+                } else if (sc != null && !isSecured() && tag.equals("starttls")) {
+                    LOGGER.info("STREAM " + streamID + " SECURING");
+                    sendStanza("<proceed xmlns=\"" + NS_TLS + "\" />");
+                    try {
+                        socket = sc.getSocketFactory().createSocket(socket, socket.getInetAddress().getHostAddress(),
+                                socket.getPort(), true);
+                        ((SSLSocket) socket).setUseClientMode(false);
+                        ((SSLSocket) socket).startHandshake();
+                        setSecured(true);
+                        LOGGER.info("STREAM " + streamID + " SECURED");
+                        restartParser();
+                    } catch (SSLException sex) {
+                        LOGGER.warning("STREAM " + streamID + " SSL ERROR");
+                        sendStanza("<failed xmlns\"" + NS_TLS + "\" />");
+                        xmpp.removeConnectionIn(this);
+                        closeConnection();
+                    }
+                } else if (isSecured() && tag.equals("stream") && parser.getNamespace().equals(NS_STREAM)) {
+                    sendOpenStream(null, true);
+                } else {
+                    LOGGER.info("STREAM " + streamID + ": " + XmlUtils.parseToString(parser, true));
+                }
+            }
+            LOGGER.warning("STREAM " + streamID + " FINISHED");
+            xmpp.removeConnectionIn(this);
+            closeConnection();
+        } catch (EOFException | SocketException ex) {
+            LOGGER.info(String.format("STREAM %s CLOSED (dirty)", streamID));
+            xmpp.removeConnectionIn(this);
+            closeConnection();
+        } catch (HostUnknownException e) {
+            LOGGER.warning(e.getMessage());
+        } catch (Exception e) {
+            LOGGER.log(Level.WARNING, "STREAM " + streamID + " ERROR", e);
+            xmpp.removeConnectionIn(this);
+            closeConnection();
+        }
+    }
+
+    void updateTsRemoteData() {
+        tsRemoteData = System.currentTimeMillis();
+    }
+
+    void sendOpenStream(String from, boolean xmppversionnew) throws IOException {
+        String openStream = "<?xml version='1.0'?><stream:stream xmlns='jabber:server' " +
+                "xmlns:stream='http://etherx.jabber.org/streams' xmlns:db='jabber:server:dialback' from='" +
+                xmpp.HOSTNAME + "' id='" + streamID + "' version='1.0'>";
+        if (xmppversionnew) {
+            openStream += "<stream:features>";
+            if (sc != null && !isSecured() && !xmpp.brokenSSLhosts.contains(from)) {
+                openStream += "<starttls xmlns=\"" + NS_TLS + "\"><optional/></starttls>";
+            }
+            openStream += "</stream:features>";
+        }
+        sendStanza(openStream);
+    }
+
+    public void sendDialbackResult(String sfrom, String type) {
+        try {
+            sendStanza("<db:result from='" + xmpp.HOSTNAME + "' to='" + sfrom + "' type='" + type + "'/>");
+            if (type.equals("valid")) {
+                from.add(sfrom);
+                LOGGER.info("STREAM FROM " + sfrom + " " + streamID + " READY");
+            }
+        } catch (IOException e) {
+            LOGGER.warning("STREAM FROM " + sfrom + " " + streamID + " ERROR: " + e.toString());
+        }
+    }
+
+    boolean checkFromTo(XmlPullParser parser) throws Exception {
+        String cfrom = parser.getAttributeValue(null, "from");
+        String cto = parser.getAttributeValue(null, "to");
+        if (cfrom != null && cto != null && !cfrom.isEmpty() && !cto.isEmpty()) {
+            JID jidto = new JID(cto);
+            if (jidto.Host != null && jidto.Username != null && jidto.Host.equals(xmpp.HOSTNAME) && jidto.Username.matches("^[a-zA-Z0-9\\-]{2,16}$")) {
+                JID jidfrom = new JID(cfrom);
+                int size = from.size();
+                for (int i = 0; i < size; i++) {
+                    if (from.get(i).equals(jidfrom.Host)) {
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
+    }
+    class HostUnknownException extends Exception {
+        public HostUnknownException(String message) {
+            super(message);
+        }
+    }
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/s2s/ConnectionOut.java b/juick-xmpp/src/main/java/com/juick/components/s2s/ConnectionOut.java
new file mode 100644
index 00000000..cedb3745
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/s2s/ConnectionOut.java
@@ -0,0 +1,168 @@
+package com.juick.components.s2s;
+
+import com.juick.components.XMPPServer;
+import com.juick.xmpp.extensions.StreamFeatures;
+import com.juick.xmpp.utils.XmlUtils;
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import javax.net.ssl.SSLException;
+import javax.net.ssl.SSLSocket;
+import java.io.EOFException;
+import java.io.IOException;
+import java.net.Socket;
+import java.net.SocketException;
+import java.security.KeyManagementException;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.CertificateException;
+import java.util.UUID;
+import java.util.logging.Level;
+
+/**
+ * @author ugnich
+ */
+public class ConnectionOut extends Connection implements Runnable {
+
+    public boolean streamReady = false;
+    public String to;
+    String checkSID = null;
+    String dbKey = null;
+
+    public ConnectionOut(XMPPServer xmpp, String hostname) throws CertificateException, UnrecoverableKeyException, NoSuchAlgorithmException, XmlPullParserException, KeyManagementException, KeyStoreException, IOException {
+        super(xmpp);
+        to = hostname;
+    }
+
+    public ConnectionOut(XMPPServer xmpp, String hostname, String checkSID, String dbKey) throws Exception {
+        super(xmpp);
+        to = hostname;
+        this.checkSID = checkSID;
+        this.dbKey = dbKey;
+        streamID = UUID.randomUUID().toString();
+    }
+
+    void sendOpenStream() throws IOException {
+        sendStanza("<?xml version='1.0'?><stream:stream xmlns='jabber:server' id='" + streamID +
+                "' xmlns:stream='http://etherx.jabber.org/streams' xmlns:db='jabber:server:dialback' from='" +
+                xmpp.HOSTNAME + "' to='" + to + "' version='1.0'>");
+    }
+
+    void processDialback() throws Exception {
+        if (checkSID != null) {
+            sendDialbackVerify(checkSID, dbKey);
+        }
+        sendStanza("<db:result from='" + xmpp.HOSTNAME + "' to='" + to + "'>" +
+                generateDialbackKey(to, xmpp.HOSTNAME, streamID) + "</db:result>");
+    }
+
+    @Override
+    public void run() {
+        logger.info("STREAM TO " + to + " START");
+        try {
+            socket = new Socket();
+            socket.connect(DNSQueries.getServerAddress(to));
+            restartParser();
+
+            sendOpenStream();
+
+            parser.next(); // stream:stream
+            streamID = parser.getAttributeValue(null, "id");
+            if (streamID == null || streamID.isEmpty()) {
+                throw new Exception("STREAM TO " + to + " INVALID FIRST PACKET");
+            }
+
+            logger.info("STREAM TO " + to + " " + streamID + " OPEN");
+            xmpp.addConnectionOut(ConnectionOut.this);
+            boolean xmppversionnew = parser.getAttributeValue(null, "version") != null;
+            if (!xmppversionnew) {
+                processDialback();
+            }
+
+            while (parser.next() != XmlPullParser.END_DOCUMENT) {
+                if (parser.getEventType() != XmlPullParser.START_TAG) {
+                    continue;
+                }
+                logParser();
+
+                String tag = parser.getName();
+                if (tag.equals("result") && parser.getNamespace().equals(NS_DB)) {
+                    String type = parser.getAttributeValue(null, "type");
+                    if (type != null && type.equals("valid")) {
+                        streamReady = true;
+                        logger.info("STREAM TO " + to + " " + streamID + " READY");
+
+                        String cache = xmpp.getFromCache(to);
+                        if (cache != null) {
+                            logger.info("STREAM TO " + to + " " + streamID + " SENDING CACHE");
+                            sendStanza(cache);
+                        }
+
+                    } else {
+                        logger.info("STREAM TO " + to + " " + streamID + " DIALBACK FAIL");
+                    }
+                    XmlUtils.skip(parser);
+                } else if (tag.equals("verify") && parser.getNamespace().equals(NS_DB)) {
+                    String from = parser.getAttributeValue(null, "from");
+                    String type = parser.getAttributeValue(null, "type");
+                    String sid = parser.getAttributeValue(null, "id");
+                    if (from != null && from.equals(to) && sid != null && !sid.isEmpty() && type != null) {
+                        ConnectionIn c = xmpp.getConnectionIn(sid);
+                        if (c != null) {
+                            c.sendDialbackResult(from, type);
+                        }
+                    }
+                    XmlUtils.skip(parser);
+                } else if (tag.equals("features") && parser.getNamespace().equals(NS_STREAM)) {
+                    StreamFeatures features = StreamFeatures.parse(parser);
+                    if (sc != null && !isSecured() && features.STARTTLS >= 0 && !xmpp.brokenSSLhosts.contains(to)) {
+                        logger.info("STREAM TO " + to + " " + streamID + " SECURING");
+                        sendStanza("<starttls xmlns=\"" + NS_TLS + "\" />");
+                    } else {
+                        processDialback();
+                    }
+                } else if (tag.equals("proceed") && parser.getNamespace().equals(NS_TLS)) {
+                    try {
+                        socket = sc.getSocketFactory().createSocket(socket, socket.getInetAddress().getHostAddress(),
+                                socket.getPort(), true);
+                        ((SSLSocket) socket).startHandshake();
+                        setSecured(true);
+                        logger.info("STREAM " + streamID + " SECURED");
+                        restartParser();
+                        sendOpenStream();
+                    } catch (SSLException sex) {
+                        logger.log(Level.SEVERE, String.format("s2s ssl error: %s %s", to, streamID), sex);
+                        sendStanza("<failed xmlns\"" + NS_TLS + "\" />");
+                        xmpp.removeConnectionOut(this);
+                        closeConnection();
+                    }
+                } else if (isSecured() && tag.equals("stream") && parser.getNamespace().equals(NS_STREAM)) {
+                    streamID = parser.getAttributeValue(null, "id");
+                } else {
+                    logger.info("STREAM TO " + to + " " + streamID + ": " + XmlUtils.parseToString(parser, true));
+                }
+            }
+
+            logger.warning("STREAM TO " + to + " " + streamID + " FINISHED");
+            xmpp.removeConnectionOut(ConnectionOut.this);
+            closeConnection();
+        } catch (EOFException | SocketException eofex) {
+            logger.info(String.format("STREAM %s %s CLOSED (dirty)", to, streamID));
+            xmpp.removeConnectionOut(ConnectionOut.this);
+            closeConnection();
+        } catch (Exception e) {
+            logger.log(Level.SEVERE, String.format("s2s out exception: %s %s", to, streamID), e);
+            xmpp.removeConnectionOut(ConnectionOut.this);
+            closeConnection();
+        }
+    }
+
+    public void sendDialbackVerify(String sid, String key) {
+        try {
+            sendStanza("<db:verify from='" + xmpp.HOSTNAME + "' to='" + to + "' id='" + sid + "'>" + key + "</db:verify>");
+        } catch (IOException e) {
+            logger.log(Level.WARNING, "STREAM TO " + to + " " + streamID + " ERROR", e);
+        }
+    }
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/s2s/DNSQueries.java b/juick-xmpp/src/main/java/com/juick/components/s2s/DNSQueries.java
new file mode 100644
index 00000000..6de9e15d
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/s2s/DNSQueries.java
@@ -0,0 +1,47 @@
+package com.juick.components.s2s;
+
+import java.net.InetSocketAddress;
+import java.net.UnknownHostException;
+import java.util.Hashtable;
+import java.util.Random;
+import javax.naming.NamingException;
+import javax.naming.directory.Attribute;
+import javax.naming.directory.DirContext;
+import javax.naming.directory.InitialDirContext;
+
+/**
+ *
+ * @author ugnich
+ */
+public class DNSQueries {
+
+    private static Random rand = new Random();
+
+    public static InetSocketAddress getServerAddress(String hostname) throws UnknownHostException {
+
+        String host = hostname;
+        int port = 5269;
+
+        try {
+            Hashtable<String, String> env = new Hashtable<String, String>(5);
+            env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
+            DirContext ctx = new InitialDirContext(env);
+            Attribute att = ctx.getAttributes("_xmpp-server._tcp." + hostname, new String[]{"SRV"}).get("SRV");
+
+            if (att != null && att.size() > 0) {
+                int i = rand.nextInt(att.size());
+                try {
+                    String srv[] = att.get(i).toString().split(" ");
+                    port = Integer.parseInt(srv[2]);
+                    host = srv[3];
+                } catch (Exception e) {
+                }
+            }
+
+            ctx.close();
+        } catch (NamingException e) {
+        }
+
+        return new InetSocketAddress(host, port);
+    }
+}
diff --git a/juick-xmpp/src/main/java/com/juick/components/s2s/JuickBot.java b/juick-xmpp/src/main/java/com/juick/components/s2s/JuickBot.java
new file mode 100644
index 00000000..737fbdc2
--- /dev/null
+++ b/juick-xmpp/src/main/java/com/juick/components/s2s/JuickBot.java
@@ -0,0 +1,379 @@
+package com.juick.components.s2s;
+
+import com.juick.User;
+import com.juick.components.XMPPServer;
+import com.juick.server.PMQueries;
+import com.juick.server.TagQueries;
+import com.juick.server.UserQueries;
+import com.juick.xmpp.JID;
+import com.juick.xmpp.Message;
+import com.juick.xmpp.Presence;
+import com.juick.xmpp.extensions.Error;
+import com.juick.xmpp.extensions.JuickMessage;
+
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ *
+ * @author ugnich
+ */
+public class JuickBot {
+    XMPPServer xmpp;
+    public JuickBot(XMPPServer xmpp, JID JuickJID) {
+        this.xmpp = xmpp;
+        this.JuickJID = JuickJID;
+    }
+
+    public final JID JuickJID;
+    private static final String HELPTEXT =
+            "@username text - Send private message\n"
+            + "*tagname Blah-blah-blah - Post a message with tag 'tagname'\n"
+            + "#1234 Blah-blah-blah - Answer to message #1234\n"
+            + "#1234/5 Blah - Answer to reply #1234/5\n"
+            + "! #1234 - Recommend post\n"
+            + "\n"
+            + "# - Show last messages from your feed (## - second page, ...)\n"
+            + "@ - Show recomendations and popular personal blogs\n"
+            + "* - Show your tags\n"
+            + "#1234 - Show message\n"
+            + "#1234+ - Show message with replies\n"
+            + "@username - Show user's info\n"
+            + "@username+ - Show user's info and last 10 messages\n"
+            + "@username *tag - User's messages with this tag\n"
+            + "*tag - Show last 10 messages with this tag\n"
+            + "? blah - Search posts for 'blah'\n"
+            + "? @username blah - Searching among user\'s posts for 'blah'\n"
+            + "D #123 - Delete message\n"
+            + "D #123/45 - Delete reply\n"
+            + "DL - Delete last message/reply\n"
+            + "S - Show your subscriptions\n"
+            + "S #123 - Subscribe to message replies\n"
+            + "S @username - Subscribe to user's blog\n"
+            + "U #123 - Unsubscribe from comments\n"
+            + "U @username - Unsubscribe from user's blog\n"
+            + "BL - Show your blacklist\n"
+            + "BL @username - Add/delete user to/from your blacklist\n"
+            + "BL *tag - Add/delete tag to/from your blacklist\n"
+            + "ON / OFF - Enable/disable subscriptions delivery\n"
+            + "PING - Pong\n"
+            + "\n"
+            + "Read more: http://juick.com/help/";
+
+    public boolean incomingPresence(Presence p) throws Exception {
+        final String username = p.to.Username.toLowerCase();
+        final boolean toJuick = username.equals("juick");
+
+        if (p.type == null) {
+            Presence reply = new Presence();
+            reply.from = new JID(p.to.Username, p.to.Host, null);
+            reply.to = new JID(p.from.Username, p.from.Host, null);
+            reply.type = Presence.Type.unsubscribe;
+            xmpp.sendOut(reply);
+            return true;
+        } else if (p.type.equals(Presence.Type.probe)) {
+            int uid_to = 0;
+            if (!toJuick) {
+                uid_to = UserQueries.getUIDbyName(xmpp.jdbc, username);
+            }
+
+            if (toJuick || uid_to > 0) {
+                Presence reply = new Presence();
+                reply.from = p.to;
+                reply.from.Resource = "Juick";
+                reply.to = p.from;
+                reply.priority = 10;
+                xmpp.sendOut(reply);
+            } else {
+                Presence reply = new Presence(p.to, p.from, Presence.Type.error);
+                reply.id = p.id;
+                reply.addChild(new Error(Error.Type.cancel, "item-not-found"));
+                xmpp.sendOut(reply);
+                return true;
+            }
+            return true;
+        } else if (p.type.equals(Presence.Type.subscribe)) {
+            boolean canSubscribe = false;
+            if (toJuick) {
+                canSubscribe = true;
+            } else {
+                int uid_to = UserQueries.getUIDbyName(xmpp.jdbc, username);
+                if (uid_to > 0) {
+                    PMQueries.addPMinRoster(xmpp.jdbc, uid_to, p.from.Bare());
+                    canSubscribe = true;
+                }
+            }
+
+            if (canSubscribe) {
+                Presence reply = new Presence(p.to, p.from, Presence.Type.subscribed);
+                xmpp.sendOut(reply);
+
+                reply.from.Resource = "Juick";
+                reply.priority = 10;
+                reply.type = null;
+                xmpp.sendOut(reply);
+
+                return true;
+            } else {
+                Presence reply = new Presence(p.to, p.from, Presence.Type.error);
+                reply.id = p.id;
+                reply.addChild(new Error(Error.Type.cancel, "item-not-found"));
+                xmpp.sendOut(reply);
+                return true;
+            }
+        } else if (p.type.equals(Presence.Type.unsubscribe)) {
+            if (!toJuick) {
+                int uid_to = UserQueries.getUIDbyName(xmpp.jdbc, username);
+                if (uid_to > 0) {
+                    PMQueries.removePMinRoster(xmpp.jdbc, uid_to, p.from.Bare());
+                }
+            }
+
+            Presence reply = new Presence(p.to, p.from, Presence.Type.unsubscribed);
+            xmpp.sendOut(reply);
+        }
+
+        return false;
+    }
+
+    public boolean incomingMessage(Message msg) throws Exception {
+        if (msg.body == null || msg.body.isEmpty()) {
+            return true;
+        }
+
+        String username = msg.to.Username.toLowerCase();
+
+        User user_from = null;
+        String signuphash = "";
+        user_from = UserQueries.getUserByJID(xmpp.jdbc, msg.from.Bare());
+        if (user_from == null) {
+            signuphash = UserQueries.getSignUpHashByJID(xmpp.jdbc, msg.from.Bare());
+        }
+
+        if (user_from == null) {
+            Message reply = new Message(msg.to, msg.from, Message.Type.chat);
+            if (username.equals("juick")) {
+                reply.body = "Для того, чтобы начать пользоваться сервисом, пожалуйста пройдите быструю регистрацию: http://juick.com/signup?type=xmpp&hash=" + signuphash + "\nЕсли у вас уже есть учетная запись на Juick, вы сможете присоединить этот JabberID к ней.\n\nTo start using Juick, please sign up: http://juick.com/signup?type=xmpp&hash=" + signuphash + "\nIf you already have an account on Juick, you will be proposed to attach this JabberID to your existing account.";
+            } else {
+                reply.body = "Внимание, системное сообщение!\nВаш JabberID не обнаружен в списке доверенных. Для того, чтобы отправить сообщение пользователю " + username + "@juick.com, пожалуйста зарегистрируйте свой JabberID в системе: http://juick.com/signup?type=xmpp&hash=" + signuphash + "\nЕсли у вас уже есть учетная запись на Juick, вы сможете присоединить этот JabberID к ней.\n\nWarning, system message!\nYour JabberID is not found in our server's white list. To send a message to " + username + "@juick.com, please sign up: http://juick.com/signup?type=xmpp&hash=" + signuphash + "\nIf you already have an account on Juick, you will be proposed to attach this JabberID to your existing account.";
+            }
+            xmpp.sendOut(reply);
+            return true;
+        }
+
+        if (username.equals("juick")) {
+            return incomingMessageJuick(user_from, msg);
+        }
+
+        int uid_to = UserQueries.getUIDbyName(xmpp.jdbc, username);
+
+        if (uid_to == 0) {
+            Message reply = new Message(msg.to, msg.from, Message.Type.error);
+            reply.id = msg.id;
+            reply.addChild(new Error(Error.Type.cancel, "item-not-found"));
+            xmpp.sendOut(reply);
+            return true;
+        }
+
+        boolean success = false;
+        if (!UserQueries.isInBLAny(xmpp.jdbc, uid_to, user_from.getUID())) {
+            success = PMQueries.createPM(xmpp.jdbc, user_from.getUID(), uid_to, msg.body);
+        }
+
+        if (success) {
+            Message m = new Message();
+            m.from = new JID("juick", "juick.com", null);
+            m.to = new JID(Integer.toString(uid_to), "push.juick.com", null);
+            JuickMessage jmsg = new JuickMessage();
+            jmsg.setUser(user_from);
+            jmsg.setText(msg.body);
+            m.childs.add(jmsg);
+            xmpp.getRouter().send(m.toString());
+
+            m.to.Host = "ws.juick.com";
+            xmpp.getRouter().send(m.toString());
+
+            List<String> jids;
+            boolean inroster = false;
+            jids = UserQueries.getJIDsbyUID(xmpp.jdbc, uid_to);
+            for (String jid : jids) {
+                Message mm = new Message();
+                mm.to = new JID(jid);
+                mm.type = Message.Type.chat;
+                inroster = PMQueries.havePMinRoster(xmpp.jdbc, user_from.getUID(), jid);
+                if (inroster) {
+                    mm.from = new JID(jmsg.getUser().getUName(), "juick.com", "Juick");
+                    mm.body = msg.body;
+                } else {
+                    mm.from = new JID("juick", "juick.com", "Juick");
+                    mm.body = "Private message from @" + jmsg.getUser().getUName() + ":\n" + msg.body;
+                }
+                xmpp.sendOut(mm);
+            }
+        } else {
+            Message reply = new Message(msg.to, msg.from, Message.Type.error);
+            reply.id = msg.id;
+            reply.addChild(new Error(Error.Type.cancel, "not-allowed"));
+            xmpp.sendOut(reply);
+        }
+
+        return false;
+    }
+    private static Pattern regexPM = Pattern.compile("^\\@(\\S+)\\s+([\\s\\S]+)$");
+
+    public boolean incomingMessageJuick(User user_from, Message msg) throws Exception {
+        String command = msg.body.trim();
+        int commandlen = command.length();
+
+        // COMPATIBILITY
+        if (commandlen > 7 && command.substring(0, 3).equalsIgnoreCase("PM ")) {
+            command = command.substring(3).trim();
+            commandlen = command.length();
+        }
+
+        if (commandlen == 4) {
+            if (command.equalsIgnoreCase("PING")) {
+                commandPing(msg);
+                return true;
+            } else if (command.equalsIgnoreCase("HELP")) {
+                commandHelp(msg);
+                return true;
+            }
+        } else if (commandlen == 5 && command.equalsIgnoreCase("LOGIN")) {
+            commandLogin(msg, user_from);
+            return true;
+        } else if (command.charAt(0) == '@') {
+            Matcher matchPM = regexPM.matcher(command);
+            if (matchPM.find()) {
+                String user_to = matchPM.group(1);
+                String msgtxt = matchPM.group(2);
+                commandPM(msg, user_from, user_to, msgtxt);
+                return true;
+            }
+        } else if (commandlen == 2 && command.equalsIgnoreCase("BL")) {
+            commandBLShow(msg, user_from);
+            return true;
+        }
+
+        return false;
+    }
+
+    private void commandPing(Message m) throws Exception {
+        Presence p = new Presence(JuickJID, m.from);
+        p.priority = 10;
+        xmpp.sendOut(p);
+
+        Message reply = new Message(JuickJID, m.from, Message.Type.chat);
+        reply.body = "PONG";
+        xmpp.sendOut(reply);
+    }
+
+    private void commandHelp(Message m) throws Exception {
+        Message reply = new Message(JuickJID, m.from, Message.Type.chat);
+        reply.body = HELPTEXT;
+        xmpp.sendOut(reply);
+    }
+
+    private void commandLogin(Message m, User user_from) throws Exception {
+        Message reply = new Message(JuickJID, m.from, Message.Type.chat);
+        reply.body = "http://juick.com/login?" + UserQueries.getHashByUID(xmpp.jdbc, user_from.getUID());
+        xmpp.sendOut(reply);
+    }
+
+    private void commandPM(Message m, User user_from, String user_to, String body) throws Exception {
+        int ret = 0;
+
+        int uid_to = 0;
+        List<String> jids_to = null;
+        boolean haveInRoster = false;
+
+        if (user_to.indexOf('@') > 0) {
+            uid_to = UserQueries.getUIDbyJID(xmpp.jdbc, user_to);
+        } else {
+            uid_to = UserQueries.getUIDbyName(xmpp.jdbc, user_to);
+        }
+
+        if (uid_to > 0) {
+            if (!UserQueries.isInBLAny(xmpp.jdbc, uid_to, user_from.getUID())) {
+                if (PMQueries.createPM(xmpp.jdbc, user_from.getUID(), uid_to, body)) {
+                    jids_to = UserQueries.getJIDsbyUID(xmpp.jdbc, uid_to);
+                    ret = 200;
+                } else {
+                    ret = 500;
+                }
+            } else {
+                ret = 403;
+            }
+        } else {
+            ret = 404;
+        }
+
+        if (ret == 200) {
+            Message msg = new Message();
+            msg.from = new JID("juick", "juick.com", null);
+            msg.to = new JID(Integer.toString(uid_to), "push.juick.com", null);
+            JuickMessage jmsg = new JuickMessage();
+            jmsg.setUser(user_from);
+            jmsg.setText(body);
+            msg.childs.add(jmsg);
+            xmpp.getRouter().send(msg.toString());
+
+            msg.to.Host = "ws.juick.com";
+            xmpp.getRouter().send(msg.toString());
+
+            for (String jid : jids_to) {
+                Message mm = new Message();
+                mm.to = new JID(jid);
+                mm.type = Message.Type.chat;
+                haveInRoster = PMQueries.havePMinRoster(xmpp.jdbc, user_from.getUID(), jid);
+                if (haveInRoster) {
+                    mm.from = new JID(user_from.getUName(), "juick.com", "Juick");
+                    mm.body = body;
+                } else {
+                    mm.from = new JID("juick", "juick.com", "Juick");
+                    mm.body = "Private message from @" + user_from.getUName() + ":\n" + body;
+                }
+                xmpp.sendOut(mm);
+            }
+        }
+
+        Message reply = new Message(m.to, m.from);
+        if (ret == 200) {
+            reply.type = m.type;
+            reply.body = "Private message sent";
+        } else {
+            reply.type = Message.Type.error;
+            reply.body = "Error " + ret;
+        }
+        xmpp.sendOut(reply);
+    }
+
+    private void commandBLShow(Message m, User user_from) throws Exception {
+        List<User> blusers = UserQueries.getUserBLUsers(xmpp.jdbc, user_from.getUID());
+        List<String> bltags = TagQueries.getUserBLTags(xmpp.jdbc, user_from.getUID());
+
+        String txt = "";
+        if (bltags.size() > 0) {
+            for (String bltag : bltags) {
+                txt += "*" + bltag + "\n";
+            }
+
+            if (blusers.size() > 0) {
+                txt += "\n";
+            }
+        }
+        if (blusers.size() > 0) {
+            for (User bluser : blusers) {
+                txt += "@" + bluser.getUName() + "\n";
+            }
+        }
+        if (txt.isEmpty()) {
+            txt = "You don't have any users or tags in your blacklist.";
+        }
+
+        Message reply = new Message(JuickJID, m.from, Message.Type.chat);
+        reply.body = txt;
+        xmpp.sendOut(reply);
+    }
+}
-- 
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