require 'socket'   # Sockets 是标准库
 
hostname = 'localhost'
port = 2000
 
s = TCPSocket.open(hostname, port)
 
while line = s.gets  # 从 socket 中读取每行数据
 puts line.chop   # 打印到终端
end
s.close        # 关闭 socket

require 'socket'        # 获取socket标准库
 
server = TCPServer.open(2000) # Socket 监听端口为 2000
loop {             # 永久运行服务
 client = server.accept    # 等待客户端连接
 client.puts(Time.now.ctime) # 发送时间到客户端
 client.puts "Closing the connection. Bye!"
 client.close         # 关闭客户端连接
}

require 'socket'        # 获取socket标准库
 
server = TCPServer.open(2000)  # Socket 监听端口为 2000
loop {             # 永久运行服务
 Thread.start(server.accept) do |client|
  client.puts(Time.now.ctime) # 发送时间到客户端
  client.puts "Closing the connection. Bye!"
  client.close        # 关闭客户端连接
 end
}

require 'socket'
 
host = 'www.ziqiangxuetang.com'   # web服务器
port = 80              # 默认 HTTP 端口
path = "/index.htm"         # 想要获取的文件地址
 
# 这是个 HTTP 请求
request = "GET #{path} HTTP/1.0\r\n\r\n"
 
socket = TCPSocket.open(host,port) # 连接服务器
socket.print(request)        # 发送请求
response = socket.read       # 读取完整的响应
# Split response at first blank line into headers and body
headers,body = response.split("\r\n\r\n", 2)
print body             # 输出结果

require 'net/http'         # 我们需要的库
host = 'www.ziqiangxuetang.com'      # web 服务器
path = '/index.htm'         # 我们想要的文件
 
http = Net::HTTP.new(host)     # 创建连接
headers, body = http.get(path)   # 请求文件
if headers.code == "200"      # 检测状态码
 print body            
else                
 puts "#{headers.code} #{headers.message}"
end