On Dec 1, 2003, at 12:18 PM, James Edward Gray II wrote: [..]
If you can get by with the line oriented reads and writes, by all means use them and save yourself a lot of pain. That's rare in networking though, in my experience.
If you really do need sysread(), you'll need to check it with select() to see when data is available and buffer your reads until you know you have an entire message.
one way simplistic way to try the sysread() approach would be go with something like
my $message;
my $bytes=1;
while ($bytes)
{
$bytes = sysread(SOCK,$buf,4096);
$message .= $buf;
# or try say
# last if eof(SOCK);
}Assuming of course that one is just going to read the socket dry, and the server side will close it off so that the eof() event will be 'hearable'.
The alternative of course is to go with some sort of 'header/payload' approach, in which the header will call out how many bytes are to be read off the socket as 'payload'. Or build out a 'non-line oriented' protocol that offers a specific EOM ( end of message ) indicator, or ....
ciao drieux
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