Re: SIGPIPE?
Re: SIGPIPE?
- Subject: Re: SIGPIPE?
- From: Malte Tancred <email@hidden>
- Date: Wed, 8 May 2002 10:46:20 +0200
On wednesday, may 8, 2002, at 05:05 , Andrew Baldwin wrote:
Now that my code for connecting to the network and forwarding packets
is complete I get a SIGPIPE error after connecting to several clients
and sending/receiving messages...
My basic question, what is a SIGPIPE error -- would it be caused by a
problem with the network connections or the thread connections (the
only info I found on SIGPIPE was that it involved one side of a socket
connection dropping out, does this mean that the connection between
threads is dropping or that the network connection on one side is
dropping [I doubt the latter since I check vigorously for dropped
connections]).
You must handle SIGPIPE errors as they can occurr whenever you try to
write to a socket, even if you "check vigorously for dropped
connections".
The connection might be dropped during the write even if you beforehand
make sure that the socket is writable.
From the man page for the write system call:
...
[EPIPE] An attempt is made to write to a pipe that is
not open
for reading by any process.
[EPIPE] An attempt is made to write to a socket of type
that
is not connected to a peer socket.
...
Try this:
signal(SIGPIPE, SIG_IGN);
This tells the program to ignore the raised SIGPIPE signal. Check the
man page for the signal system call for a description.
Hope this helps.
Cheerio,
Malte
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| References: | |
| | >SIGPIPE? (From: Andrew Baldwin <email@hidden>) |