How to develop XMPP client for symbian

[sumanthgwn]

Hi All,
I want to develop an IM client,as i seen i can do it using XMPP and its library..so can i know can i develop client for symbian and which server i need to use..(openfire ..etc..).so let me if there any link or docs to go through to start developing.

[wizard_hu_]

OpenFire is a peaceful choice, it is possible to use it both with and without encryption (Ejabberd does not work with encryption).
Then visit www.xmpp.org, and check documentation/rfc-s, and as a first try sending fixed messages to the server.

[sumanthgwn]

ya i seen xmpp.org site ,i seen RFc's and libraries.so i planning to use C++ libraries gloox to develop symbian client and how i need to connect to sever(open fire) .so i need some help how to start using those libraries in symbian..

[wizard_hu_]

I can not help in that, since I have developed my own library.
But libraries usually come with documentation, and perhaps examples too, so you should check them if they exist.

[sumanthgwn]

hi.atleast can i know how to connect to openfire sever from symbian client...what Apis i need to use.i have one doudt once i develop xmpp client for symbian i need to hit openfire server or direct gtalk server for IM and presence..can u send some docs or link how to start developing client for symbian..

[wizard_hu_]

I really can not see the problems with an initial attempt:

RSocketServ serv;
serv.Connect();
RSocket sock;
sock.Open(serv,KAfInet, KSockStream, KProtocolInetTcp);
TInetAddr addr(KInetAddrLoop,5222);
TRequestStatus stat;
sock.Connect(addr,stat);
User::WaitForRequest(stat);
console->Printf(_L("Connect status: %d\n"),stat.Int());

and you are connected.
Then according to 4.8 (http://xmpp.org/rfcs/rfc3920.html#streams)

_LIT8(KStart8,"<?xml version='1.0'?>\
   <stream:stream\
       to='servername'\
       xmlns='jabber:client'\
       xmlns:stream='http://etherx.jabber.org/streams'\
       version='1.0'>");
sock.Write(KStart8(),stat);
User::WaitForRequest(stat);
console->Printf(_L("Write status: %d\n"),stat.Int());
TBuf8<100> buf8;
sock.Read(buf);
User::WaitForRequest(stat);
console->Printf(_L("Read status: %d\n"),stat.Int());
TBuf<100> buf;
buf.Copy(buf8);
console->Printf(buf);

and you have started the client stream and received the first 100 bytes of the response.
servername should match the name set for your OpenFire server
It is a console-based fragment where error handling is completely removed - though status codes are reported.

[sumanthgwn]

hi,i Tired by the code u given me...first i connected by

RSocketServ serv;
serv.Connect();
RSocket sock;
sock.Open(serv,KAfInet, KSockStream, KProtocolInetTcp);
TInetAddr address ;
address.SetAddress(INET_ADDR(127,0,0,1));
address.SetPort (5222);
TRequestStatus stat;
sock.Connect(address,stat);
User::WaitForRequest(stat);

TBuf<20> status;
status.Format(_L("%d"),stat.Int());

given me stat.Int() is zero.

then i added other code to send request to server like this

RSocketServ serv;
serv.Connect();
RSocket sock;
sock.Open(serv,KAfInet, KSockStream, KProtocolInetTcp);
TInetAddr address ;
address.SetAddress(INET_ADDR(127,0,0,1));
address.SetPort (5222);
TRequestStatus stat;
sock.Connect(address,stat);
User::WaitForRequest(stat);

TBuf<20> status;
status.Format(_L("%d"),stat.Int());
//CEikonEnv::Static()->AlertWin(status);
//console->Printf(_L("Connect status: %d\n"),stat.Int());
//SetActive();
_LIT8(KStart8,"<stream:stream
xmlns='jabber:client'
xmlns:stream='http://etherx.jabber.org/streams'
to='sumanth'
version='1.0'>");
sock.Write(KStart8(),stat);
User::WaitForRequest(stat);
//console->Printf(_L("Write status: %d\n"),stat.Int());
TBuf8<100> buf8;

sock.Read(buf8,stat);
User::WaitForRequest(stat);
//console->Printf(_L("Read status: %d\n"),stat.Int());
TBuf<100> buf;
buf.Copy(buf8);
CEikonEnv::Static()->AlertWin(buf);

My Server name is sumanth.
I installed openfire server on my pc with server name "sumanth" and when tried http://127.0.0.1:5222 it showing nothing in browser..but from emulator first block of code giving me ZERO then for read write operation status it not showing anything..

so whats next step i need to do...to get reply from server..iam using openfire server.


Atlast screen getting dim..

[wizard_hu_]

Oh, I missed the XML header, sorry.
Try

_LIT8(KStart8,"<?xml version='1.0' encoding='utf-8'?>\
<stream:stream xmlns='jabber:client'\
xmlns:stream='http://etherx.jabber.org/streams'\
to='sumanth' version='1.0'>");

[sumanthgwn]

Hi wizard..i got response in back..by adding new lines u sent.
now we done with our first step...now what is next ..need to do..if possible can u tell me next 2 steps to implement...then..we keep on proceeding...thank u for u r help..

[wizard_hu_]

Check the further examples on the XMPP site. With proper configuration of OpenFire it should be possible to work without encryption (so you can skip starttls), thus you can simply authenticate yourself (suggested method: PLAIN, Base64 encoding is documented in the Wiki), since the string contains null-characters as separator, it is safer to construct it incrementally:

TBuf8<100> buf;
buf.Append(_L("test@sumanth"));
buf.Append(0);
buf.Append(_L("test"));
buf.Append(0);
buf.Append(_L("password"));

Base64 encode, wrap it into an auth element with mechanism='PLAIN', and check what happens.
If everything is fine, read the examples further, bind a resource, and start a session.
If things are still working, you can set your presence, and check it from the admin page of OpenFire.
Since the responses are not handled by now, and their size varies a lot, you may consider increasing buffer size to 1000, and using RecvOneOrMore instead of Read. This way you will probably see more.

[sumanthgwn]

where i can find examples in xmpp to connect server with username and password.I need to check libraries..?? or which Api's i need to use for it..

[sumanthgwn]

hi wizard,here is the follow i got reposne from server.....


C:

<?xml version='1.0' encoding='utf-8'?>\
<stream:stream xmlns='jabber:client'\
xmlns:stream='http://etherx.jabber.org/streams'\
to='sumanth' version='1.0'>

S:

<?xml version='1.0' encoding='UTF-8'?><stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="sumanth" id="4774c6cb" xml:lang="en" version="1.0">tfarams:xml:ns:xmpp-tls"></starttls><mechanisms xmlns="urn:ietfarams:xml:ns:xmpp-sasl"><mechanism>DIGEST-MD5</mechanism><mechanism>PLAIN</mechanism><mechanism>ANONYMOUS</mechanism><mechanism>CRAM-MD5</mechanism></mechanisms><compression xmlns="http://jabber.org/features/compress"><method>zlib</method></compression><auth xmlns="http://jabber.org/features/iq-auth"/><register xmlns="http://jabber.org/features/iq-register"/></stream:features>

C:

<?xml version='1.0' encoding='utf-8'?>\
<iq type='get' to='sumanth' id='auth1'> "
" <query xmlns='jabber:iq:auth'/></iq>

S:

<iq type="result" id="auth1" from="sumanth"><query xmlns="jabber:iq:auth"><username/><password/><digest/><resource/></query></iq>

C:

<?xml version='1.0' encoding='utf-8'?>\
<iq type='set' id='auth2'>"
"<query xmlns='jabber:iq:auth'>"
"<username>mskumar</username>"
"<password>mskumar</password>"
"<resource>globe</resource>"
"</query>"
"</iq>"

S:

Server Resonded with error for wrong password :

<iq type="error" id="auth2" to="sumanth/4774c6cb"><query xmlns="jabber:iq:auth"><username>mskumar</username><password>mskumar1</password><resource>globe</resource></query><error code="401" type="auth"><not-authorized xmlns="urn:ietfarams:xml:ns:xmpp-stanzas"/></error></iq>

IF username and password is correct i got below reponse from server

<iq type="result" id="auth2" to="mskumar@sumanth/globe"/>

and i have doudt what </resource> i need to use in resource tag..iam going in correct path?...as i seen in server i cant get any user online...what next step we need to do..

thanks.

[wizard_hu_]

You need not re-send '<?xml version='1.0' encoding='utf-8'?>'. It is required only at the very beginning.
Otherwise the communication seems to be fine, but I do not know what is the default authorization mechanism, and I used PLAIN only.

[sumanthgwn]

Hi wizard ,the way i sending message to server is correct or i need to use any authenticating with a server using SASL(section 6.5) or STARTTLS(section 5.3)

as i seen in http://www.ietf.org/rfc/rfc3920.txt

second client request to send server should be like this

Client selects an authentication mechanism:

<auth xmlns='urn:ietfarams:xml:ns:xmpp-sasl'
mechanism='PLAIN'/> rather then mechanism='DIGEST-MD5'/>

and what the code u sent about base64..where i need to use it..

can u send me some docs or link...the way i need to send request for authentication

[sumanthgwn]

Hi wizard,
I handled atlast to connect with username and password.i getting response
<success xmlns="urn:ietfarams:xml:ns:xmpp-sasl"/> .But next iam trying to send set presence by below schema <presence><show>Available</show><status>anymessage</status></presence>" .
But in reply iam getting <stream:error xmlns:stream="http://etherx.jabber.org/streams"><not-authorized xmlns="urn:ietfarams:xml:ns:xmpp-streams"/></stream:error></stream:stream> with not-authorized ..what would be the problem.plz help me.Iam using Openfire server.