What I am trying to do is simply have a PHP script send a UDP packet to a VB6 program.
I first setup a simple app to send and get data via IP addresses on 2 computers. It worked, but for some reason I could only get messages via UDP and my PC would not seem to send anything. My app actually posts data to a SQL server via PHP, so what I want to do is get the PHP script to send a reply to the post to all other users running the VB6 application.
I have this example here http://php.net/manual/en/function.socket-create.php
and I have put my port number in, and my IP address, however, my VB6 application never sees any incomming packets, so I am out of ideas on what this could be. I know incomming worked from a VB6 to VB6 app, just not PHP to VB6.
I actually wonder if VB has any special headers needed to "see" incomming UDP packets on the set port ? This may be the problem, but I cannot find any information about packet headers sent in VB6.