Very Computer

by **Joachim Plaettner-Hochwart** » Tue, 02 Feb 1999 04:00:00

Hi,
I'm using a socket connection in one of my programs to send every second
a set of data to another application - for each set I use a separate
write(). Now it happens that if there are too many data set, the program
quits without notifying anything! Could the reason be that the socket
buffer is full, and if so, why doesn't the write() or read() return an
errno value? Is there a way to check if the buffer is full?

Thanks for any help...

Joachim

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by **Andrew Giert** » Tue, 02 Feb 1999 04:00:00

Joachim> Hi,
Joachim> I'm using a socket connection in one of my programs to send
Joachim> every second a set of data to another application - for each
Joachim> set I use a separate write(). Now it happens that if there
Joachim> are too many data set, the program quits without notifying
Joachim> anything!

Are you ignoring SIGPIPE (you should)?

If you write() to a socket that has been closed on the other end
(or the other end has died for some reason, or gone away) then your
program will receive a SIGPIPE signal, which kills it if not blocked,
ignored or caught. (Ignoring it is the best method, in which case the
write() call returns EPIPE instead.)

--
Andrew.

comp.unix.programmer FAQ: see <URL: http://www.erlenstar.demon.co.uk/unix/>
or <URL: http://www.whitefang.com/unix/>

Very Computer

What happens if the buffer of a socket is full?

What happens if the buffer of a socket is full?

What happens if the buffer of a socket is full?