I thought I’d whip up a simple quick command line program to send bytes by UDP to test some other software. Turns out not to be as quick as I was hoping. The server.send method has trouble compiling.
In /usr/lib/crystal/socket.cr:298:26 298 | evented_send(message.to_slice, "Error sending datagram") do |slice| ^------- Error: undefined method 'to_slice' for Array(UInt8)
The source code, stripped to essentials, is:
alias Byte = UInt8 cat48data : Array(Byte) = Byte[ 11, 22, 33, 44 ] server = UDPSocket.new server.bind "192.168.11.23", while command!='q' server.send cat48data end