Groups > comp.lang.java.programmer > #9251

Setting TCP parameters for Socket?

From	markspace <-@.>
Newsgroups	comp.lang.java.programmer
Subject	Setting TCP parameters for Socket?
Date	2011-10-27 09:48 -0700
Organization	A noiseless patient Spider
Message-ID	<j8c20r$cmp$1@dont-email.me> (permalink)

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Sahm's post reminded me about this:

Investigating Socket::isReachable() a while back, I discovered that the 
Socket constructor actually establishes a TCP connection.  This means 
you can't set TCP parameters for the inital connection.  For example, 
SO_TIMEOUT.

   Socket sock = new Socket( hostname, port );
   sock.setSoTimeout( 6000 );    // too late!

There's no way that I can see to change the time out of the initial 
connection, which occurs in the first line above, in the constructor. 
You can set the time out for subsequent reads, but not the first connect.

Does anyone know of a way to control various TCP parameters, esp. the 
time out, for the Socket constructor?

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Setting TCP parameters for Socket? markspace <-@.> - 2011-10-27 09:48 -0700
  Re: Setting TCP parameters for Socket? markspace <-@.> - 2011-10-27 10:10 -0700
    Re: Setting TCP parameters for Socket? markspace <-@.> - 2011-10-27 11:16 -0700
  Re: Setting TCP parameters for Socket? Steven Simpson <ss@domain.invalid> - 2011-10-27 20:41 +0100
  Re: Setting TCP parameters for Socket? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-10-27 23:35 +0200
    Re: Setting TCP parameters for Socket? markspace <-@.> - 2011-10-27 15:40 -0700

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