ruby - 在 Ruby 中，如何从套接字读取 UTF-8？

Question

当服务器发送 UTF-8 字节时，如何在不让字符变成纯字节的情况下读取它们？ (\x40 等)

Answer 1

您可以使用 IO#set_encoding将套接字的外部编码设置为 UTF-8。

#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

require 'socket'

server_socket = TCPServer.new('localhost', 0)
Thread.new do
  loop do
    session_socket = server_socket.accept
    session_socket.set_encoding 'ASCII-8BIT'  
    session_socket.puts "  ᚁ ᚂ ᚃ ᚄ ᚅ ᚆ ᚇ ᚈ ᚉ ᚊ ᚋ ᚌ ᚍ"
    session_socket.close
  end
end

client_socket = TCPSocket.new('localhost', server_socket.addr[1])
client_socket.set_encoding 'UTF-8'
p client_socket.gets
# => "|  ᚁ ᚂ ᚃ ᚄ ᚅ ᚆ ᚇ ᚈ ᚉ ᚊ ᚋ ᚌ ᚍ\n"