UDP broadcast example

[SolomonViveros]

Is there any example usage available to demonstrate setting the socket options[if necessary] to allow for a UDP broadcast using the .write(from:,to:) command?

When I write to "192.168.1.255" I get a Udp write Error on a test network that allows broadcasts.

[billabt]

What error are you getting? Can you show me some code? Thanks.

[SolomonViveros]

It shows an SOCKET_ERR_WRITE_FAILED - Permission Denied

UdpAsciiBuffer[0] = 48
UdpAsciiBuffer[1] = 49
UdpAsciiBuffer[2] = 50
UdpAsciiBuffer[3] = 51
        
let addr = Socket.createAddress(for: "192.168.1.255", on: UdpPort)
           
do
     {
     try TestUdpSocket?.write(from: UdpAsciiBuffer, to: addr!)
      }
catch let error
    {
    print("Udp write Error")
    }

UdpPort = 1234
If the address is specified to a unique IP, data is sent, but when the IP is set to 255 an error is returned.

[billabt]

This is fixed in the latest release, 0.12.58. I added a new API, udpBroadcast(enable: Bool), that you should call after creating the socket and before attempting to write to it. See the documentation in the README.md for more info.

[SolomonViveros]

After updating and setting UdpBroadcast to true, a Permission denied error is returned when using the testReadWriteUDP() example function where hostname = "192.168.1.255" and port set to 1234.

Are you able to confirm a "Hello from UDP" udp broadcast across the network using the testReadWriteUDP example function?

[billabt]

Sorry, I had a typo in udpBroadcast. It's fixed in the 0.12.59 release. It was actually disabling the broadcast instead of enabling it.

[SolomonViveros]

Awesome! Works now. Thanks!