hundemeier / go-sacn Goto Github PK

package main

import (
        "fmt"
        "log"

        "github.com/Hundemeier/go-sacn/sacn"
)

func main() {
        recv, err := sacn.NewReceiverSocket("", nil)
        if err != nil {
                log.Fatal(err)
        }
        recv.SetOnChangeCallback(func(old sacn.DataPacket, newD sacn.DataPacket) {
                fmt.Println("data changed on", newD.Universe())
        })
        recv.SetTimeoutCallback(func(univ uint16) {
                fmt.Println("timeout on", univ)
        })
        recv.Start()
        fmt.Println("Started")
        select {} //only that our program does not exit. Exit with Ctrl+C
}

package main

import (
        "log"
        "time"

        "github.com/Hundemeier/go-sacn/sacn"
)

func main() {
        //instead of "" you could provide an ip-address that the socket should bind to
        trans, err := sacn.NewTransmitter("", [16]byte{1, 2, 3}, "test")
        if err != nil {
                log.Fatal(err)
        }

        //activates the first universe
        ch, err := trans.Activate(1)
        if err != nil {
                log.Fatal(err)
        }
        //deactivate the channel on exit
        defer close(ch)

        //set a unicast destination, and/or use multicast
        trans.SetMulticast(1, true) //this specific setup will not multicast on windows,
        //because no bind address was provided

        //set some example ip-addresses
        trans.SetDestinations(1, []string{"127.0.0.1"})

        // Turn Shutter on and off
        for i := 0; i < 20; i++ {
                ch <- [512]byte{0, 255}
                time.Sleep(1000 * time.Millisecond)
                ch <- [512]byte{255, 0}
                time.Sleep(1000 * time.Millisecond)

        }
}

Started
data changed on 1
data changed on 1
data changed on 1

        //set a unicast destination, and/or use multicast
        trans.SetMulticast(2, true) //this specific setup will not multicast on windows,
        //because no bind address was provided

        //set some example ip-addresses
        trans.SetDestinations(2, []string{"127.0.0.1"})

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x4df4fa]

goroutine 1 [running]:
github.com/Hundemeier/go-sacn/sacn.NewTransmitter(0x0, 0x0, 0x35c1711ec70da98e, 0xb1f8cce947e4eb8e, 0x53431f, 0x8, 0, 0x0, 0x0, 0x0, ...)
        /home/linuxleon/bin/Golang/src/github.com/Hundemeier/go-sacn/sacn/transmitter.go:43 +0x19a
main.main()
        /home/linuxleon/bin/key2sACN/key2sacn.go:43 +0x2e7