I wrote a client in AS3 that connects via socket to a server written in PHP. I received a somewhat cryptic request from a Russian developer about proxy settings that I honestly cannot answer:
"I am not an expert in the flash. But as far as I know, in the flash there are different types of sockets. And not for every socket flash client will initiate a connection through the proxy settings of your browser. Guaranteed via proxy will work rtmpt sockets. May by http sockets too."
I'm not sure but I think he's asking if my client will use the the proxy settings from one's browser. I've never had the pain or privelege of using proxy settings, so I'm at a loss to provide any answer. I suspect the answer to this question is not yes or no but rather a lengthy discourse.
If anyone could shed some light on this or point me to some helpful reading on how the flash Socket class might interact with one's proxy settings, I would be very grateful. I could also use some remedial studies in the the browser/proxy concept too.