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Versions: 26
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Contents
#!/usr/bin/env ruby
# frozen_string_literal: true
$LOAD_PATH.push File.expand_path("../lib", __dir__)
require "nio"
require "socket"
# Echo server example written with nio4r
class EchoServer
def initialize(host, port)
@selector = NIO::Selector.new
puts "Listening on #{host}:#{port}"
@server = TCPServer.new(host, port)
monitor = @selector.register(@server, :r)
monitor.value = proc { accept }
end
def run
loop do
@selector.select { |monitor| monitor.value.call }
end
end
def accept
socket = @server.accept
_, port, host = socket.peeraddr
puts "*** #{host}:#{port} connected"
monitor = @selector.register(socket, :r)
monitor.value = proc { read(socket) }
end
def read(socket)
data = socket.read_nonblock(4096)
socket.write_nonblock(data)
rescue EOFError
_, port, host = socket.peeraddr
puts "*** #{host}:#{port} disconnected"
@selector.deregister(socket)
socket.close
end
end
EchoServer.new("localhost", 1234).run if $PROGRAM_NAME == __FILE__
Version data entries
26 entries across 23 versions & 5 rubygems