Documentation Error

Archived
1

Hey all, I just noticed that there is an error with the code example on this page: http://sdkdocs.roku.com/display/sdkdoc/roDataGramSocket


' UDP 2-way peer-to-peer asynchronous comm on port 54321
' periodically sends out a message to a specific address and port
' prints any message it receives
Function UDPPeer()
    msgPort = createobject("roMessagePort")
    udp = createobject("roDatagramSocket")
    udp.setMessagePort(msgPort) 'notifications for udp come to msgPort
    addr = createobject("roSocketAddress")
    addr.setPort(54321)
    udp.setAddress(addr) ' bind to all host addresses on port 54321
    addr.SetHostName("10.1.1.1")
    udp.setSendToAddress(addr) ' peer IP and port
    udp.notifyReadable(true)
    timeout = 1 * 10 * 1000 ' ten seconds in milliseconds
    uniqueDev = createobject("roDeviceInfo").GetDeviceUniqueId()
    message = "Datagram from " + uniqueDev
    udp.sendStr(message)
    continue = udp.eOK()
    While continue
        event = wait(msgPort,timeout)
        If type(event)="roSocketEvent"
            If event.getSocketID()=udp.getID()
                If udp.isReadable()
                    message = udp.receiveStr(512) ' max 512 characters
                    print "Received message: '"; message; "'"
                End If
            End If
        Else If event=invalid
            print "Timeout"
            udp.sendStr(message) ' periodic send
        End If
    End While
    udp.close() ' would happen automatically as udp goes out of scope
End Function

In the line:


event = wait(msgPort,timeout)

The args have been reversed. It should be:


event = wait(timeout,msgPort)

Cheers!

2

Thanks, it’s fixed now.

–Mark