Regarding server sockets

[KaustubhB]

I am creating a chat application in which server can provide Relay Chat as well as instant messaging. i have finished the relay chat part. My application can also generate list of users that are logged in on server side. I am using objectoutputstream to send that list but my server is getting disconnected. i am sending on same socket which serversocket.accept() method spawns which sends my messages too..
my question is can a two server sockets can be opened at the same time on a single ip but different ports... coz i tried doing tht and still connection is getting reset i am doing this on localhost...

[Norm]

Have you tried it? You should be able to use ServerSockets with different ports with no problems.

[KaustubhB]

Thanks dude
i was doing a very silly mistake while serializing objects
and your answer is correct.
i just wrote a statement that prints all the connections serversocket accepts
finally the list of users is getting transported
THANK YOU SO MUCH....

[Norm]

Often just trying it will give you the answer saving a post.

[KaustubhB]

Ok i got one more glitch. see there is a list of clients which is getting populated once a client is connecting or disconnecting to the server this list is stored in a string array which is then sent to other users by means of object serialization and objectoutput stream. the thing is i m not closing the this stream and object is sent only once that is the list is sent only once .
my question is do u have to close the objectoutput stream every time ?? how to read the list if we r not closin the output stream ?? and i dont know whether object is being recieved multiple times.....
plz help

[Norm]

You would close the stream when you are done with it. If you want to continue using it, try calling flush().

i dont know whether object is being recieved multiple times.....

If you send it once, you should receive it once. Why do you think it might be receiving it multiple times?

[KaustubhB]

The list is getting updated every time and is getting stored in the string array then serialized array is sent many times over the socket i m using flush() after sending the array its the receiving i m having problem with ....
the array is sent properly for the first time but when another client connects to the server the list gets updated and is sent again i don't know whether the array is sent again or whether m having problem in the receiving end.
so again ma question is can one use the stream more than once for sending the serialized object..
sorry for asking u silly questions but i m not getting this for a while and its one module of ma engineering project and i m about to get ma final degree and super tensed ...

[Norm]

can one use the stream more than once for sending the serialized object..

There shouldn't be any restrictions on what is sent or how often it is sent over a stream.

i don't know whether the array is sent again or whether m having problem in the receiving end.

Do some debugging. Print out what is sent and what is received.

[KaustubhB]

I completed the chat client i was doing a mistake while reading later i had to use oos.reset() now i m facing a problem regarding swings
norm dude u rock
can u plz help me in this i m kinda in a very bad position
i was integrating all the modules for UI
now i m facing a problem where i spawn a main window and text area is updated from other class problem is am the output stream of the client side is getting closed after first instance
n i ll mail u da code of ma project if u ll plz help me i m having a deadline to dayafter tommorow....

[Norm]

Please use normal English in your posts.
Waiting for a properly spelled post.

[KaustubhB]

Ok.
Sorry i am kinda weak at phrasing sentences in english
see i have 4 modules of my project
one of them is chat which deals with relaychat as well as private messaging
I have completed this module and gave it a temporary GUI using swings
Now when i am integrating it with the applications UI i am facing a problem
can i mail u the code so u can look into it ll be better to explain what problem i am facing .. and we can chat via gtalk or something...

[Norm]

Sorry, no private work. Post what you want to discuss here. Make a small, simple program that compiles, executes and shows the problem.

[KaustubhB]

I have to meet a deadline and i m going to do it anyway so thanks for helping ...
U can close this thread
i ll go back to books ...