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Re: write(2) SIGPIPE on a closed socket?

2003-03-19 Thread ianf
Bruce Evans wrote: > On Wed, 19 Mar 2003, Peter Pentchev wrote: > > > Actually, I wonder if I have answered my own question. dnscache seems > > to use poll(2), and it would be poll(2)'s task to notify the program of > > any exceptional (error) conditions. I wonder if it is possible that > > dnsc

Re: write(2) SIGPIPE on a closed socket?

2003-03-19 Thread Bruce Evans
On Wed, 19 Mar 2003, Peter Pentchev wrote: > Actually, I wonder if I have answered my own question. dnscache seems > to use poll(2), and it would be poll(2)'s task to notify the program of > any exceptional (error) conditions. I wonder if it is possible that > dnscache does not handle POLLERR pr

Re: write(2) SIGPIPE on a closed socket?

2003-03-19 Thread Bruce Evans
On Wed, 19 Mar 2003, Peter Pentchev wrote: > On Wed, Mar 19, 2003 at 01:37:48AM -0800, Luigi Rizzo wrote: > > On Wed, Mar 19, 2003 at 11:30:02AM +0200, Peter Pentchev wrote: > > ... > > > dnscache) getting a SIGPIPE when attempting to write to an incoming > > > connection's socket. Presumably, th

Re: write(2) SIGPIPE on a closed socket?

2003-03-19 Thread Peter Pentchev
On Wed, Mar 19, 2003 at 11:45:06AM +0200, Peter Pentchev wrote: > On Wed, Mar 19, 2003 at 01:37:48AM -0800, Luigi Rizzo wrote: > > On Wed, Mar 19, 2003 at 11:30:02AM +0200, Peter Pentchev wrote: > > ... > > > dnscache) getting a SIGPIPE when attempting to write to an incoming > > > connection's soc

Re: write(2) SIGPIPE on a closed socket?

2003-03-19 Thread Peter Pentchev
On Wed, Mar 19, 2003 at 01:37:48AM -0800, Luigi Rizzo wrote: > On Wed, Mar 19, 2003 at 11:30:02AM +0200, Peter Pentchev wrote: > ... > > dnscache) getting a SIGPIPE when attempting to write to an incoming > > connection's socket. Presumably, the client closed the connection in > ... > > The questi

Re: write(2) SIGPIPE on a closed socket?

2003-03-19 Thread Luigi Rizzo
On Wed, Mar 19, 2003 at 11:30:02AM +0200, Peter Pentchev wrote: ... > dnscache) getting a SIGPIPE when attempting to write to an incoming > connection's socket. Presumably, the client closed the connection in ... > The question: if the client closed the socket, shouldn't a write(2) > return -1 wit

write(2) SIGPIPE on a closed socket?

2003-03-19 Thread Peter Pentchev
Hi, In http://marc.theaimsgroup.com/?l=djbdns&m=104796742521473&w=2 and http://marc.theaimsgroup.com/?l=djbdns&m=104802936220297&w=2 Tristan Goode describes a weird problem on FreeBSD 4.5: a program (DJB's dnscache) getting a SIGPIPE when attempting to write to an incoming connection's socket. Pr