Function 53, subfunction 0 - open UDP-socket.
Parameters:
- eax = 53 - function number
- ebx = 0 - subfunction number
- ecx = local port (only low word is taken into account)
- edx = remote port (only low word is taken into account)
- esi = remote IP
Returned value:
- eax = -1 = 0xFFFFFFFF - error; ebx destroyed
- eax = socket handle (some number which unambiguously identifies
socket and have sense only for the system) - success;
ebx destroyed