Ruby TCP/IP通信如何处理并发-乐工具技术知识

在Ruby中处理TCP/IP通信并发可以通过多种方式实现，包括使用线程、异步IO和事件驱动库等。下面是一些常见的方法：

1. 使用线程（Threads）

线程是Ruby中最基本的并发机制。你可以创建多个线程来同时处理多个TCP连接。

require 'socket'

server = TCPServer.new('localhost', 8080)

threads = []

server.each_connection do |client|
  threads << Thread.new do
    client.puts "Hello from thread #{Thread.current.object_id}"
    client.close
  end
end

threads.each(&:join)

2. 使用异步IO（Async IO）

Ruby的IO模块提供了异步IO支持，可以使用IO.select或IO.wait来处理多个连接。

require 'socket'
require 'io/select'

server = TCPServer.new('localhost', 8080)

inputs = [server]
outputs = []

while inputs.any?
  readable, writable, exceptional = IO.select(inputs, outputs, inputs)

  readable.each do |sock|
    if sock == server
      client = server.accept
      inputs << client
      puts "New connection from #{client.peerhost}:#{client.peerport}"
    else
      data = https://www.yisu.com/ask/sock.gets"Received: #{data}"
      outputs << sock
    end
  end

  writable.each do |sock|
    sock.puts "Message received"
  end

  exceptional.each do |sock|
    puts "Exception on #{sock.path}: #{sock.error}"
    inputs.delete(sock)
    sock.close
  end
end

3. 使用事件驱动库（Event-driven libraries）

Ruby中有许多事件驱动库，如EventMachine和Celluloid，它们可以帮助你更高效地处理并发连接。

使用EventMachine

require 'eventmachine'

class MyServer < EventMachine::Connection
  def post_init
    @datahttps://www.yisu.com/ask/= ''
    @send_data = https://www.yisu.com/ask/false'hello'
      @send_data = https://www.yisu.com/ask/true"Hello from EventMachine\n")
      @send_data = https://www.yisu.com/ask/false'localhost', 8080, MyServer)
end

使用Celluloid

require 'celluloid'
require 'socket'

class MyServer
  include Celluloid::IO

  def initialize(host, port)
    @server = TCPServer.new(host, port)
  end

  def start
    @server.each_connection do |client|
      handle_connection(client)
    end
  end

  def handle_connection(client)
    client.puts "Hello from Celluloid"
    client.close
  end
end

MyServer.run('localhost', 8080)