[Network] TCP multi-Thread

threading을 사용하여 여러 클라이언트와 연결이 가능하도록 구현

# Server

# serverTest4.py

import socket
from threading import Thread

HOST = socket.gethostname()
PORT = 50000
ADDR = (HOST, PORT)
BUFF_SIZE = 1024

class ClientThread(Thread):

    def __init__(self,host,port,sock):
        Thread.__init__(self)
        self.host = host
        self.port = port
        self.sock = sock
        print ("(Check the new thread) "+host+":"+str(port))

    def run(self):
        filename='iu.jpg'
        f = open(filename,'rb')
        while True:
            l = f.read(BUFF_SIZE)
            while (l):
                self.sock.send(l)
                #print('Sent ',repr(l))
                l = f.read(BUFF_SIZE)
            if not l:
                f.close()
                self.sock.close()
                break

serverSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serverSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
serverSocket.bind(ADDR)
threads = []

while True:
    serverSocket.listen(5)
    print ("Waiting for connections...")
    (clientSocket, (host, port)) = serverSocket.accept()
    print ('Connection from ', (host, port))
    newthread = ClientThread(host, port, clientSocket)
    newthread.start()
    threads.append(newthread)

    for t in threads:
        t.join()

# client

# clientTest4.py

import socket

HOST = socket.gethostname()
PORT = 50000
ADDR = (HOST, PORT)
BUFF_SIZE = 1024

clientSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
clientSocket.connect(ADDR)

with open('serverFile', 'wb') as f:
    print ('file opened')
    while True:
        print('receiving data...')
        data = clientSocket.recv(BUFF_SIZE)
        print('(data)', data)
        if not data:
            f.close()
            print ('file close')
            break
        f.write(data)

print('Successfully get the file')
clientSocket.close()
print('connection closed')