Crystal Lang 0.20.3 Socket::IPAddress change

console.sh-session

$ crystal --version
Crystal 0.20.1 (2016-12-05)
$ crystal run test.cr
1482659875.246: 127.0.0.1:55157 "This is only a test."

$ crystal --version
Crystal 0.20.3 (2016-12-23)
$ crystal run test.cr
Error in test.cr:10: wrong number of arguments for 'Socket::IPAddress.new' (given 3, expected 2)
Overloads are:
 - Socket::IPAddress.new(address : String, port : Int32)
 - Socket::IPAddress.new(sockaddr : ::Pointer(LibC::SockaddrIn6), size)
 - Socket::IPAddress.new(sockaddr : ::Pointer(LibC::SockaddrIn), size)

destination = Socket::IPAddress.new(Socket::Family::INET, host, port)
                                ^~~

# Modify L10 to:
# destination = Socket::IPAddress.new(host, port)

$ crystal run test.cr
Invalid IP address: localhost (Socket::Error)
0x10c2c42d2: *CallStack::unwind:Array(Pointer(Void)) at ??
0x10c2c4271: *CallStack#initialize:Array(Pointer(Void)) at ??
0x10c2c4248: *CallStack::new:CallStack at ??
0x10c2c36e1: *raise<Socket::Error>:NoReturn at ??
0x10c2f9c8b: *Socket::IPAddress#initialize<String, Int32>:Int32 at ??
0x10c2f9b01: *Socket::IPAddress::new<String, Int32>:Socket::IPAddress at ??
0x10c2bee47: __crystal_main at ??
0x10c2c2d78: main at ??

test.cr

require "socket"

host = "localhost"
port = 1234

server = UDPSocket.new
server.bind(host, port)

client = UDPSocket.new
destination = Socket::IPAddress.new(Socket::Family::INET, host, port)

client.send("This is only a test.", destination)

message = Slice(UInt8).new(1432)
message_size, message_source = server.receive(message)

text = message[0, message_size]
output = (String.new(text)).inspect

puts "#{Time.now.to_s("%s.%L")}: #{message_source.address}:#{message_source.port} #{output}"

server.close