Python – 实现tcp服务器和客户端

服务器

#encoding=utf-8
import sys
import socket


def start_tcp_server(ip, port):
    # create socket
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_address = (ip, port)
    # bind port
    print 'starting listen on ip %s, port %s' % server_address
    sock.bind(server_address)
    # starting listening, allow only one connection
    try:
        sock.listen(1)
    except socket.error, e:
        print "fail to listen on port %s" % e
        sys.exit(1)
    while True:
        print "waiting for connection"
        client, addr = sock.accept()
        print 'having a connection'
        client.send('>')
        while True:
            try:
                s = client.recv(255)
            except:
                print "disconnected."
                print "waiting for connection"
                client, addr = sock.accept()
                print 'having a connection'
                s = client.recv(255)
            if s:
                s = s.strip()
                print ( 'receive %s' % s)
                    client.send('>')
            else:
                print "disconnected."
                print "waiting for connection"
                client, addr = sock.accept()
                print 'having a connection'


if __name__ == '__main__':
    start_tcp_server('127.0.0.1', 8000)

#encoding=utf-8

import sys

import socket

def start_tcp_server(ip, port):

# create socket

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

server_address = (ip, port)

# bind port

print 'starting listen on ip %s, port %s' % server_address

sock.bind(server_address)

# starting listening, allow only one connection

try:

sock.listen(1)

except socket.error, e:

print "fail to listen on port %s" % e

sys.exit(1)

while True:

print "waiting for connection"

client, addr = sock.accept()

print 'having a connection'

client.send('>')

while True:

try:

s = client.recv(255)

except:

print "disconnected."

print "waiting for connection"

client, addr = sock.accept()

print 'having a connection'

s = client.recv(255)

if s:

s = s.strip()

print ( 'receive %s' % s)

client.send('>')

else:

print "disconnected."

print "waiting for connection"

client, addr = sock.accept()

print 'having a connection'

if __name__ == '__main__':

start_tcp_server('127.0.0.1', 8000)

客户端

#encoding=utf-8
import socket

HOST = '127.0.0.1' 
PORT = 8000 

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect((HOST, PORT))
    p = input('send:') 
    s.sendall(p.encode('utf-8'))
    data = s.recv(1024)
    print(data)
    s.shutdown(0)
    s.close()

#encoding=utf-8

import socket

HOST = '127.0.0.1'

PORT = 8000

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:

s.connect((HOST, PORT))

p = input('send:')

s.sendall(p.encode('utf-8'))

data = s.recv(1024)

print(data)

s.shutdown(0)

s.close()