Specifications

UC864-E/G/WD/WDU AT Commands Reference Guide

80304ST10041a Rev. 7 - 2010-10-14

3.5.7.2.12. Socket Listen UDP - #SLUDP

#SLUDP - Socket Listen UDP

AT#SLUDP=<connId>,

<listenState>,

This command opens/closes a socket listening for an incoming UDP

connection on a specified port.

Parameters:

<connId> - socket connection identifier

1..6

<listenState> -

0 - closes socket listening

1 - starts socket listening

<listenPort> - local listening port

1..65535

Note: if successful, commands returns a final result code OK . Then,

when there’s an incoming UDP connection on the local port and if the

sender is not filtered by internal firewall (see #FRWL

), an URC is

received:

SRING : <connId>

Afterwards we can use #SA

to accept the connection or #SH to refuse it.

If the socket is closed by the network the following URC is received:

#SLUDP: ABORTED

AT#SLUDP? Read command returns all the actual listening sockets.

AT#SLUDP=? Test command returns the range of supported values for all the

subparameters.

Example Next command opens a socket listening for UDP on port 3500.

AT#SLUDP=1,1,3500