How many sockets are open to the web server?

[igowi]

When accessing to same web server several times, Do I need to create this object several times? or I can use one object to do different requests?

For example,
I want to access to

http://java.sun.com

next I want to access to

http://java.sun.com/docs/

next I want to access to

http://java.sun.com/pr

I need to open new URL and create new HttpUrlConnection?

Please explain me how HttpURLConnection is working.

thanks.

 

[meadandale]

Each is a different URL so each requires a different connection.

 

[igowi]

Thanks.
One more question


HttpURLConnection establishes a socket connection to the web server?

First time,
I create an HttpURLConnection instance on

http://java.sun.com

and next
I create an instance on

http://java.sun.com/docs/

and next
I create an instance on

http://java.sun.com/pr

Every instance makes different socket connectin to the server?
or
It just uses one socket connection to the server.

I don't even know whether this is correct question or not.

 

[meadandale]

Http is a 'connectionless' protocol so, yes. Each time you open a url connection, it establishes a temporary connection that allows you to read the data that the web server is going to send you. Once the data is read, the socket is closed. You do not maintain a persistent connection that allows to to continually send and receive information with the server.

The term 'connection' is being used in several ways in this context.

 

[igowi]

Thanks.

After I read and write to a server,
even though I didn't call this function
connection.disconnect()(connection is an instance of HttpURLConnection), automatically it's disconnected?

I should call the function disconnect() or it's doesn't matter?