UDP Networking Basics (questions)

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ghislain

Hi ImaginaryHuman,

You sure seem to know a lot about it already..
I adjusted my example a little bit.
I guess you can use one udp-socket to send and recieve. Seems obvious..
Not sure if the ports can be different or not.

Strict

' one udp
Local Udp:tSocket = CreateUDPSocket()
' to recieve
BindSocket (Udp, 49000)
' to send
ConnectSocket (Udp, HostIp ("127.0.0.1"), 49000)

' Send some data
Local b:Byte [] = [Byte(9), Byte(7), Byte(5), Byte(3), Byte(1)]
Udp.send (Varptr b[0], b.length)

' create a loop which waits for some data
While True

	If SocketReadAvail (Udp)
		' a bank to store the input
		Local tmpBank:TBank = CreateBank (1024)
		' size of data-package
		Local length:Int = Udp.recv (BankBuf (tmpBank), tmpBank.size() )
		
		' print data
		For Local i:Int = 0 To length - 1
			Print tmpBank.PeekByte(i)
		Next
		
		' exit this loop
		Exit
	End If

Wend

CloseSocket (Udp)
End

PS the while/wend exits when data is available..

Ghislain
MacIntel 10.5 - BlitzMax v1.28