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Smack over http

Hi,

I am new to XMPP, started to use ejabberd and Smack API last week. I want to connect to the ejabberd on port 80 using Smack API. I am not sure how to proceed. Any help will be greatly appreciated. Thanks.

Hi Soban,

do you mean BOSH (Bidirectional-streams Over Synchronous HTTP or formerly HTTP-Bind) and configured ejabberd with the http_poll module to port 80?

There is currently no such support in the official release, but I’ve started a branch to implement this. You can download it via subversion

svn co http://svn.igniterealtime.org/svn/repos/smack/branches/bosh/ smack-bosh

But this is still in development and have some major issues, like there is currently no support for proxies and SSL/TLS. But I like to invite you to use it and report issues and problems to this forum, then I will try to fix them.

You can build the sources using Ant:

ant -f build/build.xml

or Maven (but here you have to install some libraries to your local repository, since we don’t have a maven repository here on ignite yet).

The compiled libraries are located on the subproject directories (smack, smack-bosh, smackx, etc.) in the target folder. If you use the packages with the jar-with-dependencies suffix you don’t need to care about other necessary libraries.

Start to use smack with:

BOSHConfiguration config = new BOSHConfiguration(false, "hostname", 80, "/http-poll/", "yourdomain.lt");
Connection con = new BOSHConnection(config);
con.connect();
con.login(user, pass);

Good Luck!

2 Likes

Hi Guenther,

Thats exactly what I needed but I thought that Smack has support for it. Can you please explain what

ProxyInfo.forHttpProxy(host, port, user, pass) method exactly do? Actually my objective is to run the jabberd server behind firewall listening on port 80 so the client can make a connection via http.

BOSHConnection.java and BOSHPacketReader.java are not compiling. Can you please help me with the build.

The respective error is Connection and BOSHClientResponseListener cannot be resolved to a type.

Thanks

Edited:

 Hey, I resolved the build problem (I didnt checked out entire project earlier) .

Now the code

BOSHConfiguration config = new BOSHConfiguration(false, “host”, 80, “/http-bind”, “domain”);
Connection conn = new BOSHConnection(config);
conn.connect();

is working perfectly but I am getting an exception while I try to disconnect() the connection.

I also checked out the three java files but I am having problem to build it. The classes

Exception in thread “BOSHClient[26315233]: Receive thread” java.lang.NullPointerException
at com.kenai.jbosh.XLightWebResponse.awaitResponse(XLightWebResponse.java:187)
at com.kenai.jbosh.XLightWebResponse.getBody(XLightWebResponse.java:166)
at com.kenai.jbosh.BOSHClient.processExchange(BOSHClient.java:1031)
at com.kenai.jbosh.BOSHClient.processMessages(BOSHClient.java:976)
at com.kenai.jbosh.BOSHClient.access$000(BOSHClient.java:97)
at com.kenai.jbosh.BOSHClient$1.run(BOSHClient.java:215)
at java.lang.Thread.run(Thread.java:619)

Hi Guenther,

Thanx for the info. I have been able to connect to Openfire using the development build using BOSH.

I am trying to pass the connection RID and SessionID after creation to the Browser, so that Strophe can reattach itself to the already created connection.

I modified the com.kenai.jbosh and your library and added a function to return back the RID from the connection.

My problem is that Strophe is not been able to bind itself to the created connection.

While searching I came across this which uses Mod-Http-Pre-Bind

for ejabbered. My question now is “Does Openfire supports Http-pre-binding”. If yes how may I use it?

Thanx in advance for your help.

regards

Vibhu

Hi vibhu,

Openfire officially supports attaching to existing sessions (so it should also work with prebinding). Some time ago, I tried to use openfire with StropheJS, too but it just won’t work. I figured out that it sometimes helped to increase the rid when attaching to a session but somehow that spawned new problems and I never got this working 100% with openfire. I guess that the BOSH implementation of openfire is a bit buggy or at least very strict when it comes to managing rid’s.

In the end my solution was switching to ejabberd which works like a charm.

would you be so kind as to post the details on how you modified the code to return the RID? I am facing the same situation at the moment and I would like to try my hand at getting Strophe to successfully attach to a session. Thanks!

Big thanks to Guenther for sharing the smack-bosh code. Its working well for me so far. I just need that RID now!

Hi Jordan,

I just added a getter for RID in org.jivesoftware.smack.BOSHConnection as follows

public long getRid()
{
return client.getRid();
}

and in your code you will have to cast the Connection object into BOSHConnection to use the method.

Hope this may be of some help to you.

regards

Vibhu

Thanks for the reply Vibhu,

I must be missing something. I don’t see a function called getRid() anywhere in the smack-bosh or jbosh source, and my build expectedly fails when I add the function suggested above. You mentioned making a modification to jbosh as well - were you talking about the referenced getRid() function? That’s the part that would be most useful to me, I would greatly appreciate it if you could share that too

Pardon me for the incomplete info. Here are the changes which I have done in com.kenai.jbosh.BOSHClient class

I introduced a new property

private Long rid;

commented the following code

long rid = requestIDSeq.getNextRID();

and at that place added
* this.rid = requestIDSeq.getNextRID();*

and finally added a new getter for rid

public Long getRid()
{
return rid;

}

thanks vibhu, i’ll try out your changes later today!

i had some time yesterday to make those edits and rebuild the .jars. thanks again vibhu - your edits worked nicely. i was able to start a BOSH connection with smack with no problems. now i’m having an odd issue attaching the connection with strophe - it always works in firefox, sometimes in safari, and never in chrome. weird! i guess i’m to find some strophe support for that one now.

have done a backport of the bosh client to smack 310, attaching as a zip file. The main part was to make BoshConnection extend XMPPConnection, handle IQ s in a better way. The only non BOSH class I needed was org.jivesoftware.smack.sasl.SASLMechanism from the latest branch.
smack-bosh-backport.jar (8473 Bytes)

Thanks for the good work. I have successfully used bosh with smack using this branch. Hopefully it will be included in the next version of smack.

Hi Guenther,

I was looking into your work in the bosh branch. Can you tell me which version of smack the BOSH version is built against? I noticed that when I built the library from source in shows ‘smack-bosh-3.2.0’. Does this mean that it is built against the 3.2.0 release of smack? Also, is there any idea if this branch will become part of the release so that bugs will be fixed against it?

Hi All,

I am kind of stuck on build issue now!! I have been trying pubsub over XMPP which is supported in version SMACK 3.2.1 (Not in 3.2.0-Snapshot version).

Now, I am trying to build Branch bosh against Tag (3.2.1) because I wanna use pubsub with bash over XMPP.

But, there are few dependecy jars under “http://svn.igniterealtime.org/svn/repos/smack/branches/bosh/build/merge/smack-bo sh/jbosh.jar”

This jar is having BOSHClient.java which calls “XmlPullParserFactory,java” at runtime which doesn’t exist in latest 3.2.1 smack release. So, I end up with following exception:

Exception in thread “BOSHClient[1762502123]: Receive thread” java.lang.NoClassDefFoundError: org/xmlpull/v1/XmlPullParserFactory

Can someone please help me in understanding the build structure becuase structure of BOSH branch is different than TAG/Trunk.

Thanks in advance! I really need this

You need the xpp3.jar library. (attached)

It is available in the whack distribution.

I remember I had to include other jars to get it to work.

I needed following (google for them):

  1. xlightweb-2.13.2-jar-with-dependencies.jar

  2. xpp3.jar (attached)

  3. dom4j.jar (in whack distro)

  4. some code from com.kenai.jbosh branch

  5. some code from org.jivesoftware.smack branch

I am attaching modified smack jar with the class files from 4 and 5 included. For the others you can download the regular jars.

This is from 3.1.0 (one of the nightly builds).
xpp3.jar (119804 Bytes)
smack.jar (367320 Bytes)

Hi,

Version : Openfire 3.7.1 , Smack- 3.2.1 and jbosh-0.6.0.jar
XMPP default port: 5222 and my connection manager port: 5333 and HttpBinding – 7070(Enabled in Admin console)
BOSHConfiguration config = new BOSHConfiguration(false, “myipaddress”,
5222, “/http-bind”, “myservicename”);

As per this thread to introduce a new rid property in BOSCHClient.java I have downloaded the jbosh-0.6.0 source code from this URL (http://grepcode.com/snapshot/repo1.maven.org/maven2/com.kenai.jbosh/jbosh/0.6.0)

I made those changes in BOSHClient.java and after that also I am getting the same errors.

If I use the port number as 5222 / 5333 I am getting Timeout reaches Exception
And for 7070 port I am getting NullPointerException

Exception in thread “BOSHClient[18378667]: Receive thread” java.lang.NullPointerException
at com.kenai.jbosh.XLightWebResponse.awaitResponse(XLightWebResponse.java:187)
at com.kenai.jbosh.XLightWebResponse.getBody(XLightWebResponse.java:166)
at com.kenai.jbosh.BOSHClient.processExchange(BOSHClient.java:1031)
at com.kenai.jbosh.BOSHClient.processMessages(BOSHClient.java:976)
at com.kenai.jbosh.BOSHClient.access$000(BOSHClient.java:97)
at com.kenai.jbosh.BOSHClient$1.run(BOSHClient.java:215)
at java.lang.Thread.run(Unknown Source)

I am bit confusing with these port number. Actually which port number do I need to use here.

I am using these jars [ smack.jar,smackx-debug.jar,smackx-jingle.jar, smackx.jar, xlightweb-2.5.jar, xmlpull_1_1_3_4c.jar, xpp3-1.1.4c.jar, xSocket-2.6.6.jar and dom4j-1.6.1.jar]

Can someone please help me whatelse jars do need to include or post here the modified jars…

Thanks

I think you need the jar “xlightweb-2.13.2-jar-with-dependencies.jar”. You can find it via Google.

I am also attaching the same. Please let us know if you got it to work.
xlightweb-2.13.2-jar-with-dependencies.jar (1024367 Bytes)

Thanks for the reply.

BOSHConfiguration config = new BOSHConfiguration(false,“myipaddress”, 5222, “/http-bind”, “myservicename”);

Connection manger port : 5333 or Httpbind port : 7070 or default port : 5222 here which port number do I need to use

Thanks

You need to use the BOSH port (http-bind): 7070 or whatever your server is configured for

ejabberd default one is 5280, openfire 7070.