iOS and Socket - why don't work?

Could I sent you files so you can check they? I can't figureout. On old Air this was worked. If I create ServerSocket with 127.0.0.1 and connect from Socket to 127.0.0.1 using the same PC - this works prefectly. But if I trying to connect from PC A to PC B this not work. (ServerSocket with 127.0.0.1 and Client Socket with 192.168.1.42)

But There is no any issues with WiFi I think. I have local network server - it's work. I can reach this server from any PC that connected to my WiFi. I can see this server from any device from the same WiFi net.

But if I create on PC A - ServerSocket and try to connect to it from PC B using Socket - this not help. #2031 error appear each time.

Firstly I think this is some policy file issue. But I don't think so - PC A don't receive any connection from Client Adobe Air app so I can check something.

Maybe there some issues with ServerSocket because I can use Socket for POP3/SMTP from Adobe Air....