Re: poll (2) - portability/alternatives

If a socket is added to readfds select will return if the follow occurs: error on the socket EOF on the socket data on the socket Therefore, you should be able to call select on the socket (adding a timeout for sanity) and if it returns call read/recv. If the return value is 0 an EOF has occurred, if -1 an error occurred. The worst that can happen in this scenario is that you get data, this however can be resolved by using the MSG_PEEK option to recv, then you don't remove the data from the buffer. -Jason On Mon, 2002-03-18 at 16:39, Wez Furlong wrote: > Theres a bug in the DB where feof($sock) will not detect > a timed-out connection. > > I have a fix which uses poll(2) if available to check if > the socket has hungup. > > If poll(2) is not present, it will try to read a chunk > of data; if that times out or sets the eof indicator, > then an EOF is returned. > > Does anyone know just how portable poll(2) is, and if > there is an alternative portable technique to check if > the sock is still connected? > My man page says that libc emulates poll(2) in older > linux kernels using select(); can anyone point me to > some code that does this using select()? > > --Wez. > > > -- > PHP Development Mailing List <http://www.php.net/> > To unsubscribe, visit: http://www.php.net/unsub.php >