#!/usr/bin/env python3
# encoding: utf-8
#
# Copyright (c) 2010 Doug Hellmann. All rights reserved.
#
"""Sending Unicode data over a socket.
"""

#end_pymotw_header
import sys
import socketserver


class Echo(socketserver.BaseRequestHandler):

 def handle(self):
 """Get some bytes and echo them back to the client.

 There is no need to decode them, since they are not used.

 """
 data = self.request.recv(1024)
 self.request.send(data)


class PassThrough:

 def __init__(self, other):
 self.other = other

 def write(self, data):
 print('Writing :', repr(data))
 return self.other.write(data)

 def read(self, size=-1):
 print('Reading :', end=' ')
 data = self.other.read(size)
 print(repr(data))
 return data

 def flush(self):
 return self.other.flush()

 def close(self):
 return self.other.close()


if __name__ == '__main__':
 import codecs
 import socket
 import threading

 address = ('localhost', 0) # let the kernel assign a port
 server = socketserver.TCPServer(address, Echo)
 ip, port = server.server_address # what port was assigned?

 t = threading.Thread(target=server.serve_forever)
 t.setDaemon(True) # don't hang on exit
 t.start()

 # Connect to the server
 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 s.connect((ip, port))

 # Wrap the socket with a reader and writer.
 read_file = s.makefile('rb')
 incoming = codecs.getreader('utf-8')(PassThrough(read_file))
 write_file = s.makefile('wb')
 outgoing = codecs.getwriter('utf-8')(PassThrough(write_file))

 # Send the data
 text = 'français'
 print('Sending :', repr(text))
 outgoing.write(text)
 outgoing.flush()

 # Receive a response
 response = incoming.read()
 print('Received:', repr(response))

 # Clean up
 s.close()
 server.socket.close()