XMPP 服务器，smack API 连接

Question

I am trying to connect to Tigase Server, implement a client in Java using smack API.

    ConnectionConfiguration config = new ConnectionConfiguration("192.32.104.93", 5222, "ELVES-D463645");
    Connection connection =  new XMPPConnection(config);
    connection.connect();

When code reaches connect. I get following stacktrace.

stream:error (host-unknown)
    at org.jivesoftware.smack.PacketReader.parsePackets(PacketReader.java:214)
    at org.jivesoftware.smack.PacketReader.access$000(PacketReader.java:44)
    at org.jivesoftware.smack.PacketReader$1.run(PacketReader.java:70)
No response from the server.: 
    at org.jivesoftware.smack.NonSASLAuthentication.authenticate(NonSASLAuthentication.java:73)
    at org.jivesoftware.smack.XMPPConnection.login(XMPPConnection.java:230)
    at org.jivesoftware.smack.Connection.login(Connection.java:366)
    at com.directv.xmpp.client.poc.FirstClient.main(FirstClient.java:20)
XMPPException Occured while connecting to server No response from the server.

Can anyone please help me find, where am I going wrong. Thanks!

Answer 1

I found the solution to it.

I was entering the service name and hostname in wrong place.

and because my server is locally hosted. following code stub worked for connection with Tigase Server.

ConnectionConfiguration config = new ConnectionConfiguration("localhost", 5222, "yourdomain");

yourdomain shoulde be the domain name which was entered earlier while installation and configuration of the server.

Thank you all for your help though.

Answer 2

ConnectionConfiguration config = new ConnectionConfiguration("192.32.104.93", 5222, "ELVES-D463645");

The serviceName, third argument of the ConnectionConfiguration constructor , seems to be wrong. I would expect something like a domain here (example.com).

Answer 3

You did not even reach the Tigase server. The error appears to be related to either configuration of the DNS or to parameters you pass to the Smack library. I do not know Smack API but from the error you attach it looks like you provide incorrect hostname, or at least a hostname which does not have a correct DNS entry. This is fine and you should still be able to connect to the server if you can provide IP address as well.

Answer 4

Try below, or check your XMPP server Authentication setting

ConnectionConfiguration config = new ConnectionConfiguration(XMPP_HOST, XMPP_PORT);
config.setCompressionEnabled(false);
config.setSASLAuthenticationEnabled(false);
connection = new XMPPConnection(config);

Answer 5

Here is a code for Smack 4.3.4

 XMPPTCPConnectionConfiguration conf = XMPPTCPConnectionConfiguration.builder()
                .setHostAddress(InetAddress.getByName(host))
                .setXmppDomain(JidCreate.domainBareFrom(Domain))
                .setUsernameAndPassword("username", "password")
                .setPort(5222) 
                .build();
        AbstractXMPPConnection connection = new XMPPTCPConnection(conf);
        connection.connect();
        connection.login();