Instrument Control Toolbox

echoudp

Start or stop a UDP echo server

Syntax

• echoudp('state',port)
  echoudp('state')
  

Arguments

'state'	Turn the server on or off.
port	Port number of the server.

Description

echoudp('state',port) starts a UDP server with port number specified by port. state can only be on.

echoudp('state') stops the echo server. state can only be off.

Example

Start the echo server and create a UDP object.

• echoudp('on',4012)
  u = udp('127.0.0.1',4012);
  

Connect the UDP object to the host.

• fopen(u)
  

Write to the host and read from the host.

• fwrite(u,65:74)
  A = fread(u,10);
  

Stop the echo server and disconnect the UDP object from the host.

• echoudp('off')
  fclose(u)
  

See Also

Functions

echotcpip, tcpip, udp

echotcpip

fclose