[Spread-users] Problem with Java client

Theo Schlossnagle jesus at omniti.com
Wed Aug 17 20:27:57 EDT 2005

Ryan Caudy wrote:

>It sounds to me like there's some sort of buffering going on in the
>Java client at the socket level.
>If I had to guess, I would say that this is because the Spread Java
>API isn't using TCP_NODELAY.  The C API is, and hence wouldn't be
>subject to the same problem, assuming that my hypothesis is correct.
>Attached to this message is a patch to SpreadConnection.java
>(generated against the latest CSV version) which should set this
>socket option.
>Please let me know if this helps.
TCP_NODELAY effect how the socket reacts when you send data on it.  Not 
how it reacts when you close it.

Look at setsockopt(.... SO_LINGER).  and in C make sure you shutdown() 
the socket before you call close. (read the shutdown man page).

If you just call close() on a socket, you can certainly loose data 
you've written to it that has yet to be transmitted.


Best regards,


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