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echoudp

Start or stop echo UDP server

    Description

    example

    echoudp("on",port) starts a UDP server at the specified port number.

    example

    echoudp("off") stops the echo server.

    Examples

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    This example shows how to set up an echo UDP server.

    Start the echoserver using the echoudp function on port 4012. Create a udpport instance to communicate with the echo server.

    echoudp("on",4012)
    u = udpport
    u = 
      UDPPort with properties:
    
         IPAddressVersion: "IPV4"
                LocalHost: "0.0.0.0"
                LocalPort: 58379
        NumBytesAvailable: 0
    
      Show all properties, functions
    
    

    Write data using the write function to the echo server running on port 4012.

    write(u,1:10,"uint8","127.0.0.1",4012);

    The echo server sends back the data written to it. Read this data back using the read function.

    data = read(u,10)
    data = 1×10
    
         1     2     3     4     5     6     7     8     9    10
    
    

    Stop the echo server and clear the udpport object.

    echoudp("off")
    clear u

    Input Arguments

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    Port number of the server, specified as a number between 1 and 65535, inclusive.

    Data Types: double

    Introduced before R2006a