Ruby中的Socket编程简单入门

require 'socket'   # Sockets are in standard library

hostname = 'localhost'
port = 2000

s = TCPSocket.open(host, port)

while line = s.gets  # Read lines from the socket
 puts line.chop   # And print with platform line terminator
end
s.close        # Close the socket when done

require 'socket'        # Get sockets from stdlib

server = TCPServer.open(2000) # Socket to listen on port 2000
loop {             # Servers run forever
 client = server.accept    # Wait for a client to connect
 client.puts(Time.now.ctime) # Send the time to the client
 client.puts "Closing the connection. Bye!"
 client.close         # Disconnect from the client
}

require 'socket'        # Get sockets from stdlib

server = TCPServer.open(2000)  # Socket to listen on port 2000
loop {             # Servers run forever
 Thread.start(server.accept) do |client|
  client.puts(Time.now.ctime) # Send the time to the client
 client.puts "Closing the connection. Bye!"
  client.close        # Disconnect from the client
 end
}

require 'socket'
 
host = 'www.tutorialspoint.com'   # The web server
port = 80              # Default HTTP port
path = "/index.htm"         # The file we want 

# This is the HTTP request we send to fetch a file
request = "GET #{path} HTTP/1.0\r\n\r\n"

socket = TCPSocket.open(host,port) # Connect to server
socket.print(request)        # Send request
response = socket.read       # Read complete response
# Split response at first blank line into headers and body
headers,body = response.split("\r\n\r\n", 2) 
print body             # And display it

require 'net/http'         # The library we need
host = 'www.tutorialspoint.com'   # The web server
path = '/index.htm'         # The file we want 

http = Net::HTTP.new(host)     # Create a connection
headers, body = http.get(path)   # Request the file
if headers.code == "200"      # Check the status code  
 print body            
else                
 puts "#{headers.code} #{headers.message}" 
end