keep a socket open

[newbieKing]

Hi, I'm writing some basic client server socket programs transferring multiple files from the server to the client. How do I keep the client's socket open so that multiple files go through that one socket?
Thanks in advance!

 

[timw]

... then don't close the socket until you're done.

You may also want to call setKeepAlive() on the socket.

Tim
---------------------------
"Your morbid fear of losing,
destroys the light you're using." - Ozzy

 

[sedj]

Sounds like you should be using RMI.
RMI is a fairly thin wrapper around TCP sockets, but allows you the functionality to call methods on another server (Remote Method Invocation).

It means you don't have the headache of worrying about socket protocol etc.

Of course, if your client is in Java and your Server is in C/C++ this won't work, and you would need to look into Sockets, but if both are in Java, then RMI is defintely worth a look :

http://java.sun.com/docs/books/tutorial/rmi/

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[timw]

... unless you're a masochist and want to get to grips with CORBA

Tim
---------------------------
"Your morbid fear of losing,
destroys the light you're using." - Ozzy

 

[sedj]

LOL, unless you have to, I'd leave CORBA well alone.

I did some performance tests about 2 years ago using three client/server models : Pure Socket, RMI and CORBA.

In first place was Sockets [obviously], closely followed by RMI, with CORBA still stuck in third, trying to work out how to generate java classes from IDL at runtime

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[Diancecht]

But it's the only way to do that when you have different systems with a certain degree of indepence and scalability.

Furthermore, there are real time implementations for CORBA, applied to very fast and key systems as submarines and missile control.

Cheers,

Dian

 

[drewdaman]

hello.. i haven't used java in many years, and i just came to this forum to post a question.. and i came across this post! i have been working with winsock in c++.. just curious.. what is the java equivalent?

 

[timw]

java.net.ServerSocket and java.net.Socket

Tim
---------------------------
"Your morbid fear of losing,
destroys the lives you're using." - Ozzy

 

[sedj]

winsock in Java are the two TCP/IP classes java.net.Socket and java.net.ServerSocket .

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk