To prevent the blocking and your CPU going up to 100% usages look into: http://us2.php.net/manual/en/function.socket-select.php For length of a string: http://us2.php.net/manual/en/function.strlen.php ----- Original Message ----- From: René Fournier <m5@xxxxxxxxxxxxxxxx> Date: Thursday, October 28, 2004 1:04 pm Subject: Socket trouble > I'm having some trouble with my socket client. I would like it to > "notice" when the server is no longer there, and then reconnect. I > have > code for the reconnect, etc., but I can't figure out how to write > the > socket_read code so that it "notices" when the server is gone and > then > responds. Presently, my client just hangs (CPU goes to 100%, > nothing > happens.) > > Here's my code: > > while(($buf = socket_read($socket,1,PHP_BINARY_READ)) !== false) { > $data .= $buf; > if(preg_match("/TERMINATING/",$data)) { > $msg_recv = 1; > break; > } > } > > The PHP docs on socket_read suggest how this might be done: > > "Note: socket_read() may return a zero length string ("") > indicating > the end of communication (i.e. the remote end point has closed the > connection)." > > Does this "end of communication" include cases when the socket > server > dies without gracefully disconnecting? How could my code check for > this > zero length string? Any help is much appreciated. Thanks! > > ...René > > --- > René Fournier > www.renefournier.com > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
