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595 lines
25 KiB
Java
595 lines
25 KiB
Java
/**
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*
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* Copyright 2009 Jive Software.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack;
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import org.jivesoftware.smack.SmackException.NoResponseException;
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import org.jivesoftware.smack.SmackException.NotConnectedException;
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import org.jivesoftware.smack.filter.IQReplyFilter;
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import org.jivesoftware.smack.filter.PacketFilter;
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import org.jivesoftware.smack.iqrequest.IQRequestHandler;
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import org.jivesoftware.smack.packet.IQ;
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import org.jivesoftware.smack.packet.Stanza;
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import org.jivesoftware.smack.packet.PacketExtension;
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import org.jivesoftware.smack.packet.PlainStreamElement;
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/**
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* The XMPPConnection interface provides an interface for connections to an XMPP server and
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* implements shared methods which are used by the different types of connections (e.g.
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* {@link XMPPTCPConnection} or {@link XMPPBOSHConnection}). To create a connection to an XMPP server
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* a simple usage of this API might look like the following:
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* <p>
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*
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* <pre>
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* // Create a connection to the igniterealtime.org XMPP server.
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* XMPPTCPConnection con = new XMPPTCPConnection("igniterealtime.org");
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* // Connect to the server
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* con.connect();
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* // Most servers require you to login before performing other tasks.
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* con.login("jsmith", "mypass");
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* // Start a new conversation with John Doe and send him a message.
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* Chat chat = ChatManager.getInstanceFor(con).createChat(<font color="green">"jdoe@igniterealtime.org"</font>, new MessageListener() {
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* public void processMessage(Chat chat, Message message) {
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* // Print out any messages we get back to standard out.
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* System.out.println(<font color="green">"Received message: "</font> + message);
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* }
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* });
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* chat.sendMessage(<font color="green">"Howdy!"</font>);
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* // Disconnect from the server
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* con.disconnect();
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* </pre>
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* </p>
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* <p>
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* Note that the XMPPConnection interface does intentionally not declare any methods that manipulate
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* the connection state, e.g. <code>connect()</code>, <code>disconnect()</code>. You should use the
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* most specific connection type, e.g. <code>XMPPTCPConnection</code> as declared type and use the
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* XMPPConnection interface when you don't need to manipulate the connection state.
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* </p>
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* <p>
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* XMPPConnections can be reused between connections. This means that an Connection may be connected,
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* disconnected and then connected again. Listeners of the XMPPConnection will be retained across
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* connections.
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* </p>
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*
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* @author Matt Tucker
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* @author Guenther Niess
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*/
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@SuppressWarnings("javadoc")
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public interface XMPPConnection {
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/**
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* Returns the name of the service provided by the XMPP server for this connection.
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* This is also called XMPP domain of the connected server. After
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* authenticating with the server the returned value may be different.
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*
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* @return the name of the service provided by the XMPP server.
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*/
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public String getServiceName();
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/**
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* Returns the host name of the server where the XMPP server is running. This would be the
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* IP address of the server or a name that may be resolved by a DNS server.
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*
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* @return the host name of the server where the XMPP server is running or null if not yet connected.
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*/
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public String getHost();
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/**
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* Returns the port number of the XMPP server for this connection. The default port
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* for normal connections is 5222.
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*
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* @return the port number of the XMPP server or 0 if not yet connected.
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*/
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public int getPort();
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/**
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* Returns the full XMPP address of the user that is logged in to the connection or
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* <tt>null</tt> if not logged in yet. An XMPP address is in the form
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* username@server/resource.
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*
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* @return the full XMPP address of the user logged in.
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*/
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public String getUser();
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/**
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* Returns the stream ID for this connection, which is the value set by the server
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* when opening an XMPP stream. This value will be <tt>null</tt> if not connected to the server.
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*
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* @return the ID of this connection returned from the XMPP server or <tt>null</tt> if
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* not connected to the server.
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* @see <a href="http://xmpp.org/rfcs/rfc6120.html#streams-attr-id">RFC 6120 § 4.7.3. id</a>
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*/
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public String getStreamId();
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/**
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* Returns true if currently connected to the XMPP server.
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*
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* @return true if connected.
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*/
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public boolean isConnected();
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/**
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* Returns true if currently authenticated by successfully calling the login method.
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*
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* @return true if authenticated.
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*/
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public boolean isAuthenticated();
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/**
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* Returns true if currently authenticated anonymously.
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*
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* @return true if authenticated anonymously.
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*/
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public boolean isAnonymous();
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/**
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* Returns true if the connection to the server has successfully negotiated encryption.
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*
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* @return true if a secure connection to the server.
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*/
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public boolean isSecureConnection();
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/**
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* Returns true if network traffic is being compressed. When using stream compression network
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* traffic can be reduced up to 90%. Therefore, stream compression is ideal when using a slow
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* speed network connection. However, the server will need to use more CPU time in order to
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* un/compress network data so under high load the server performance might be affected.
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*
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* @return true if network traffic is being compressed.
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*/
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public boolean isUsingCompression();
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/**
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* Sends the specified packet to the server.
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*
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* @param packet the packet to send.
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* @throws NotConnectedException
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*/
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public void sendPacket(Stanza packet) throws NotConnectedException;
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/**
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* Send a PlainStreamElement.
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* <p>
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* <b>This method is not meant for end-user usage!</b> It allows sending plain stream elements, which should not be
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* done by a user manually. <b>Doing so may result in a unstable or unusable connection.</b> Certain Smack APIs use
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* this method to send plain stream elements.
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* </p>
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*
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* @param element
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* @throws NotConnectedException
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*/
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public void send(PlainStreamElement element) throws NotConnectedException;
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/**
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* Adds a connection listener to this connection that will be notified when
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* the connection closes or fails.
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*
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* @param connectionListener a connection listener.
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*/
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public void addConnectionListener(ConnectionListener connectionListener);
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/**
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* Removes a connection listener from this connection.
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*
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* @param connectionListener a connection listener.
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*/
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public void removeConnectionListener(ConnectionListener connectionListener);
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/**
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* Creates a new packet collector collecting packets that are replies to <code>packet</code>.
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* Does also send <code>packet</code>. The packet filter for the collector is an
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* {@link IQReplyFilter}, guaranteeing that packet id and JID in the 'from' address have
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* expected values.
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*
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* @param packet the packet to filter responses from
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* @return a new packet collector.
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* @throws NotConnectedException
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*/
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public PacketCollector createPacketCollectorAndSend(IQ packet) throws NotConnectedException;
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/**
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* Creates a new packet collector for this connection. A packet filter determines
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* which packets will be accumulated by the collector. A PacketCollector is
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* more suitable to use than a {@link PacketListener} when you need to wait for
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* a specific result.
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*
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* @param packetFilter the packet filter to use.
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* @param packet the packet to send right after the collector got created
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* @return a new packet collector.
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*/
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public PacketCollector createPacketCollectorAndSend(PacketFilter packetFilter, Stanza packet)
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throws NotConnectedException;
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/**
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* Creates a new packet collector for this connection. A packet filter
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* determines which packets will be accumulated by the collector. A
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* PacketCollector is more suitable to use than a {@link PacketListener}
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* when you need to wait for a specific result.
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* <p>
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* <b>Note:</b> If you send a Packet right after using this method, then
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* consider using
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* {@link #createPacketCollectorAndSend(PacketFilter, Stanza)} instead.
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* Otherwise make sure cancel the PacketCollector in every case, e.g. even
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* if an exception is thrown, or otherwise you may leak the PacketCollector.
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* </p>
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*
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* @param packetFilter the packet filter to use.
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* @return a new packet collector.
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*/
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public PacketCollector createPacketCollector(PacketFilter packetFilter);
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/**
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* Create a new packet collector with the given packet collector configuration.
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* <p>
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* Please make sure to cancel the collector when it is no longer required. See also
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* {@link #createPacketCollector(PacketFilter)}.
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* </p>
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*
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* @param configuration the packet collector configuration.
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* @return a new packet collector.
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* @since 4.1
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*/
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public PacketCollector createPacketCollector(PacketCollector.Configuration configuration);
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/**
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* Remove a packet collector of this connection.
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*
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* @param collector a packet collectors which was created for this connection.
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*/
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public void removePacketCollector(PacketCollector collector);
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/**
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* Registers a packet listener with this connection.
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* <p>
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* This method has been deprecated. It is important to differentiate between using an asynchronous packet listener
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* (preferred where possible) and a synchronous packet lister. Refer
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* {@link #addAsyncPacketListener(PacketListener, PacketFilter)} and
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* {@link #addSyncPacketListener(PacketListener, PacketFilter)} for more information.
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* </p>
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*
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* @param packetListener the packet listener to notify of new received packets.
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* @param packetFilter the packet filter to use.
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* @deprecated use {@link #addAsyncPacketListener(PacketListener, PacketFilter)} or
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* {@link #addSyncPacketListener(PacketListener, PacketFilter)}.
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*/
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@Deprecated
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public void addPacketListener(PacketListener packetListener, PacketFilter packetFilter);
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/**
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* Removes a packet listener for received packets from this connection.
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*
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* @param packetListener the packet listener to remove.
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* @return true if the packet listener was removed
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* @deprecated use {@link #removeAsyncPacketListener(PacketListener)} or {@link #removeSyncPacketListener(PacketListener)}.
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*/
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@Deprecated
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public boolean removePacketListener(PacketListener packetListener);
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/**
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* Registers a <b>synchronous</b> packet listener with this connection. A packet listener will be invoked only when
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* an incoming packet is received. A packet filter determines which packets will be delivered to the listener. If
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* the same packet listener is added again with a different filter, only the new filter will be used.
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* <p>
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* <b>Important:</b> This packet listeners will be called in the same <i>single</i> thread that processes all
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* incoming stanzas. Only use this kind of packet filter if it does not perform any XMPP activity that waits for a
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* response. Consider using {@link #addAsyncPacketListener(PacketListener, PacketFilter)} when possible, i.e. when
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* the invocation order doesn't have to be the same as the order of the arriving packets. If the order of the
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* arriving packets, consider using a {@link PacketCollector} when possible.
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* </p>
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*
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* @param packetListener the packet listener to notify of new received packets.
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* @param packetFilter the packet filter to use.
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* @see #addPacketInterceptor(PacketListener, PacketFilter)
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* @since 4.1
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*/
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public void addSyncPacketListener(PacketListener packetListener, PacketFilter packetFilter);
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/**
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* Removes a packet listener for received packets from this connection.
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*
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* @param packetListener the packet listener to remove.
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* @return true if the packet listener was removed
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* @since 4.1
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*/
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public boolean removeSyncPacketListener(PacketListener packetListener);
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/**
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* Registers an <b>asynchronous</b> packet listener with this connection. A packet listener will be invoked only
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* when an incoming packet is received. A packet filter determines which packets will be delivered to the listener.
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* If the same packet listener is added again with a different filter, only the new filter will be used.
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* <p>
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* Unlike {@link #addAsyncPacketListener(PacketListener, PacketFilter)} packet listeners added with this method will be
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* invoked asynchronously in their own thread. Use this method if the order of the packet listeners must not depend
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* on the order how the stanzas where received.
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* </p>
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*
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* @param packetListener the packet listener to notify of new received packets.
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* @param packetFilter the packet filter to use.
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* @see #addPacketInterceptor(PacketListener, PacketFilter)
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* @since 4.1
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*/
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public void addAsyncPacketListener(PacketListener packetListener, PacketFilter packetFilter);
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/**
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* Removes an <b>asynchronous</b> packet listener for received packets from this connection.
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*
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* @param packetListener the packet listener to remove.
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* @return true if the packet listener was removed
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* @since 4.1
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*/
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public boolean removeAsyncPacketListener(PacketListener packetListener);
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/**
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* Registers a packet listener with this connection. The listener will be
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* notified of every packet that this connection sends. A packet filter determines
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* which packets will be delivered to the listener. Note that the thread
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* that writes packets will be used to invoke the listeners. Therefore, each
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* packet listener should complete all operations quickly or use a different
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* thread for processing.
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*
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* @param packetListener the packet listener to notify of sent packets.
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* @param packetFilter the packet filter to use.
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*/
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public void addPacketSendingListener(PacketListener packetListener, PacketFilter packetFilter);
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/**
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* Removes a packet listener for sending packets from this connection.
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*
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* @param packetListener the packet listener to remove.
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*/
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public void removePacketSendingListener(PacketListener packetListener);
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/**
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* Registers a packet interceptor with this connection. The interceptor will be
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* invoked every time a packet is about to be sent by this connection. Interceptors
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* may modify the packet to be sent. A packet filter determines which packets
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* will be delivered to the interceptor.
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*
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* <p>
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* NOTE: For a similar functionality on incoming packets, see {@link #addAsyncPacketListener(PacketListener, PacketFilter)}.
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*
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* @param packetInterceptor the packet interceptor to notify of packets about to be sent.
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* @param packetFilter the packet filter to use.
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*/
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public void addPacketInterceptor(PacketListener packetInterceptor, PacketFilter packetFilter);
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/**
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* Removes a packet interceptor.
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*
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* @param packetInterceptor the packet interceptor to remove.
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*/
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public void removePacketInterceptor(PacketListener packetInterceptor);
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/**
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* Returns the current value of the reply timeout in milliseconds for request for this
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* XMPPConnection instance.
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*
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* @return the packet reply timeout in milliseconds
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*/
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public long getPacketReplyTimeout();
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/**
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* Set the packet reply timeout in milliseconds. In most cases, Smack will throw a
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* {@link NoResponseException} if no reply to a request was received within the timeout period.
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*
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* @param timeout the packet reply timeout in milliseconds
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*/
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public void setPacketReplyTimeout(long timeout);
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/**
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* Get the connection counter of this XMPPConnection instance. Those can be used as ID to
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* identify the connection, but beware that the ID may not be unique if you create more then
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* <tt>2*Integer.MAX_VALUE</tt> instances as the counter could wrap.
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*
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* @return the connection counter of this XMPPConnection
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*/
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public int getConnectionCounter();
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public static enum FromMode {
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/**
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* Leave the 'from' attribute unchanged. This is the behavior of Smack < 4.0
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*/
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UNCHANGED,
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/**
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* Omit the 'from' attribute. According to RFC 6120 8.1.2.1 1. XMPP servers "MUST (...)
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* override the 'from' attribute specified by the client". It is therefore safe to specify
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* FromMode.OMITTED here.
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*/
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OMITTED,
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/**
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* Set the from to the clients full JID. This is usually not required.
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*/
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USER
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}
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/**
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* Set the FromMode for this connection instance. Defines how the 'from' attribute of outgoing
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* stanzas should be populated by Smack.
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*
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* @param fromMode
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*/
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public void setFromMode(FromMode fromMode);
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/**
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* Get the currently active FromMode.
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*
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* @return the currently active {@link FromMode}
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*/
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public FromMode getFromMode();
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/**
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* Get the feature packet extensions for a given stream feature of the
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* server, or <code>null</code> if the server doesn't support that feature.
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*
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* @param element
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* @param namespace
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* @return a packet extensions of the feature or <code>null</code>
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*/
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public <F extends PacketExtension> F getFeature(String element, String namespace);
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/**
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* Return true if the server supports the given stream feature.
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*
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* @param element
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* @param namespace
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* @return true if the server supports the stream feature.
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*/
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public boolean hasFeature(String element, String namespace);
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/**
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* Send a stanza and wait asynchronously for a response by using <code>replyFilter</code>.
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* <p>
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* If there is a response, then <code>callback</code> will be invoked. The callback will be
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* invoked at most once and it will be not invoked after the connections default reply timeout
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* has been elapsed.
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* </p>
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*
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* @param stanza the stanza to send (required)
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* @param replyFilter the filter used to determine response stanza (required)
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* @param callback the callback invoked if there is a response (required)
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* @throws NotConnectedException
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*/
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public void sendStanzaWithResponseCallback(Stanza stanza, PacketFilter replyFilter,
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PacketListener callback) throws NotConnectedException;
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/**
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* Send a stanza and wait asynchronously for a response by using <code>replyFilter</code>.
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* <p>
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* If there is a response, then <code>callback</code> will be invoked. If there is no response
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* after the connections default reply timeout, then <code>exceptionCallback</code> will be invoked
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* with a {@link SmackException.NoResponseException}. The callback will be invoked at most once.
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* </p>
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*
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* @param stanza the stanza to send (required)
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* @param replyFilter the filter used to determine response stanza (required)
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* @param callback the callback invoked if there is a response (required)
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* @param exceptionCallback the callback invoked if there is an exception (optional)
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* @throws NotConnectedException
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*/
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public void sendStanzaWithResponseCallback(Stanza stanza, PacketFilter replyFilter, PacketListener callback,
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ExceptionCallback exceptionCallback) throws NotConnectedException;
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/**
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* Send a stanza and wait asynchronously for a response by using <code>replyFilter</code>.
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* <p>
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* If there is a response, then <code>callback</code> will be invoked. If there is no response
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* after <code>timeout</code> milliseconds, then <code>exceptionCallback</code> will be invoked
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* with a {@link SmackException.NoResponseException}. The callback will be invoked at most once.
|
|
* </p>
|
|
*
|
|
* @param stanza the stanza to send (required)
|
|
* @param replyFilter the filter used to determine response stanza (required)
|
|
* @param callback the callback invoked if there is a response (required)
|
|
* @param exceptionCallback the callback invoked if there is an exception (optional)
|
|
* @param timeout the timeout in milliseconds to wait for a response
|
|
* @throws NotConnectedException
|
|
*/
|
|
public void sendStanzaWithResponseCallback(Stanza stanza, PacketFilter replyFilter,
|
|
final PacketListener callback, final ExceptionCallback exceptionCallback,
|
|
long timeout) throws NotConnectedException;
|
|
|
|
/**
|
|
* Send a IQ stanza and invoke <code>callback</code> if there is a result of
|
|
* {@link org.jivesoftware.smack.packet.IQ.Type#result} with that result IQ. The callback will
|
|
* not be invoked after the connections default reply timeout has been elapsed.
|
|
*
|
|
* @param iqRequest the IQ stanza to send (required)
|
|
* @param callback the callback invoked if there is result response (required)
|
|
* @throws NotConnectedException
|
|
*/
|
|
public void sendIqWithResponseCallback(IQ iqRequest, PacketListener callback) throws NotConnectedException;
|
|
|
|
/**
|
|
* Send a IQ stanza and invoke <code>callback</code> if there is a result of
|
|
* {@link org.jivesoftware.smack.packet.IQ.Type#result} with that result IQ. If there is an
|
|
* error response <code>exceptionCallback</code> will be invoked, if not null, with the received
|
|
* error as {@link XMPPException.XMPPErrorException}. If there is no response after the
|
|
* connections default reply timeout, then <code>exceptionCallback</code> will be invoked with a
|
|
* {@link SmackException.NoResponseException}.
|
|
*
|
|
* @param iqRequest the IQ stanza to send (required)
|
|
* @param callback the callback invoked if there is result response (required)
|
|
* @param exceptionCallback the callback invoked if there is an Exception optional
|
|
* @throws NotConnectedException
|
|
*/
|
|
public void sendIqWithResponseCallback(IQ iqRequest, PacketListener callback,
|
|
ExceptionCallback exceptionCallback) throws NotConnectedException;
|
|
|
|
/**
|
|
* Send a IQ stanza and invoke <code>callback</code> if there is a result of
|
|
* {@link org.jivesoftware.smack.packet.IQ.Type#result} with that result IQ. If there is an
|
|
* error response <code>exceptionCallback</code> will be invoked, if not null, with the received
|
|
* error as {@link XMPPException.XMPPErrorException}. If there is no response after
|
|
* <code>timeout</code>, then <code>exceptionCallback</code> will be invoked with a
|
|
* {@link SmackException.NoResponseException}.
|
|
*
|
|
* @param iqRequest the IQ stanza to send (required)
|
|
* @param callback the callback invoked if there is result response (required)
|
|
* @param exceptionCallback the callback invoked if there is an Exception optional
|
|
* @param timeout the timeout in milliseconds to wait for a response
|
|
* @throws NotConnectedException
|
|
*/
|
|
public void sendIqWithResponseCallback(IQ iqRequest, final PacketListener callback,
|
|
final ExceptionCallback exceptionCallback, long timeout)
|
|
throws NotConnectedException;
|
|
|
|
/**
|
|
* Add a callback that is called exactly once and synchronously with the incoming stanza that matches the given
|
|
* packet filter.
|
|
*
|
|
* @param callback the callback invoked once the packet filter matches a stanza.
|
|
* @param packetFilter the filter to match stanzas or null to match all.
|
|
*/
|
|
public void addOneTimeSyncCallback(PacketListener callback, PacketFilter packetFilter);
|
|
|
|
/**
|
|
* Register an IQ request handler with this connection.
|
|
* <p>
|
|
* IQ request handler process incoming IQ requests, i.e. incoming IQ stanzas of type 'get' or 'set', and return a result.
|
|
* </p>
|
|
* @param iqRequestHandler the IQ request handler to register.
|
|
* @return the previously registered IQ request handler or null.
|
|
*/
|
|
public IQRequestHandler registerIQRequestHandler(IQRequestHandler iqRequestHandler);
|
|
|
|
/**
|
|
* Convenience method for {@link #unregisterIQRequestHandler(String, String, org.jivesoftware.smack.packet.IQ.Type)}.
|
|
*
|
|
* @param iqRequestHandler
|
|
* @return the previously registered IQ request handler or null.
|
|
*/
|
|
public IQRequestHandler unregisterIQRequestHandler(IQRequestHandler iqRequestHandler);
|
|
|
|
/**
|
|
* Unregister an IQ request handler with this connection.
|
|
*
|
|
* @param element the IQ element the IQ request handler is responsible for.
|
|
* @param namespace the IQ namespace the IQ request handler is responsible for.
|
|
* @param type the IQ type the IQ request handler is responsible for.
|
|
* @return the previously registered IQ request handler or null.
|
|
*/
|
|
public IQRequestHandler unregisterIQRequestHandler(String element, String namespace, IQ.Type type);
|
|
|
|
/**
|
|
* Returns the timestamp in milliseconds when the last stanza was received.
|
|
*
|
|
* @return the timestamp in milliseconds
|
|
*/
|
|
public long getLastStanzaReceived();
|
|
|
|
}
|