UDPLASTIP$ Function

UDPLASTIP$

Returns the source IP address (as a dotted-quad string) of the most recent packet returned by UDPREAD$.

• If no packet has been read yet, returns "0.0.0.0".

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How to read it

• Call after UDPREAD$ to determine the sender of the payload you just received.

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Examples

UDPBIND "0.0.0.0", 8080
S$ = UDPREAD$(8080)
IF LEN(S$) > 0 THEN
    PRINT "Packet received from "; UDPLASTIP$
ENDIF

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Notes

• The value updates only when UDPREAD$ dequeues a packet.
• Always returns the sender’s IPv4 address in dotted decimal form (a.b.c.d).

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See also: UDPREAD$ · UDPLASTSOURCEPORT