#!/usr/bin/python

# -*- coding: utf-8 -*-

import socket,os,sys

def handle_request(client,address):

    buf = client.recv(1024)

    print(buf,address)

    client.sendall(("your input is %s" % buf).encode('utf-8'))

def main():

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

    sock.bind(ip_port)

    sock.listen(5)

    while True:

        print('server is running...')

        connection, address = sock.accept()

        handle_request(connection,address)

        connection.close()

if __name__ == '__main__':

   port = int(sys.argv[1])

   ip_port = ('127.0.0.1',port)

   main()

#!/usr/bin/python

# -*- coding: utf-8 -*-

import socket,os,sys

port = int(sys.argv[1])

ip_port = ('127.0.0.1',port)

while True:

    sk = socket.socket()

    sk.connect(ip_port)

    inp = input('please input the info : ').strip()

    sk.sendall(('%s' % inp ).encode('utf-8'))

    #sk.sendall('nihao'.encode('utf-8'))

    if inp == 'exit':

        break

    server_reply = sk.recv(1024)

    print(server_reply)

    sk.close()

#!/usr/bin/python

# -*- coding: utf-8 -*-

import socket,os,sys

def enc(strr):

    aa = strr.encode('utf-8')

    return aa

if __name__ == '__main__':

   port = int(sys.argv[1])

   ip_port = ('127.0.0.1',port)

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

   sock.bind(ip_port)

   while True:

       print('server is running...')

       dat, address = sock.recvfrom(1024)

       data = dat.decode('utf-8')

       send_str = ''

       print(data,address)

       if data == 'exit':

           break

       if data == 'exit':

           break

       elif len(data) == '':

           send_str = enc('0 ni mei...')

       elif data.find('nihao') >= 0 :

           send_str = enc('hello,baby,nihao')

       elif data.find('sb') >= 0 :

           send_str = enc('sb,to you')

       else:

           send_str = enc('input exit to exit')

       sock.sendto(send_str,address)

   sock.close()

#!/usr/bin/python

# -*- coding: utf-8 -*-

import socket,os,sys

port = int(sys.argv[1])

ip_port = ('127.0.0.1',port)

sk = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)

while True:

    inp = input('请输入：').strip()

    if inp == 'exit':

        break

    inpp = inp.encode('utf-8')

    sk.sendto(inpp,ip_port)

    data,address = sk.recvfrom(1024)

    print(data.decode('utf-8'),address)

sk.close()

#!/usr/bin/python

# -*- coding: utf-8 -*-

import socket,os,sys,subprocess,time

def main():

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

    sock.bind(ip_port)

    sock.listen(5)    

    print('server is running...')

    while True:

        connection, address = sock.accept()

        while True:

            buf = connection.recv(1024)

            if not buf:

                break

            print("recv cmd:",str(buf,'utf-8'))

            cmd = str(buf,'utf-8').strip()

            cmd_call = subprocess.Popen(cmd,shell=True,stdout=subprocess.PIPE)

            cmd_result = cmd_call.stdout.read()

            if len(cmd_result) == 0:

                cmd_result = b"cmd execution has no output..."

            ack_msg = "CMD_RESULT_SIZE|%s" % len(cmd_result)

            print(ack_msg)

            connection.send(bytes(ack_msg,'utf8'))

            ack_re = connection.recv(50)

            print(ack_re)

            connection.send(cmd_result)

        connection.close()

if __name__ == '__main__':

   port = int(sys.argv[1])

   ip_port = ('127.0.0.1',port)

   main()

#!/usr/bin/python

# -*- coding: utf-8 -*-

import socket,os,sys

port = int(sys.argv[1])

ip_port = ('127.0.0.1',port)

sk = socket.socket()

sk.connect(ip_port)

while True:

    inp = input('cmd : ').strip()

    if len(inp) == 0:

        continue

    if inp == 'q':

        break

    sk.send(bytes(inp,'utf8'))

    server_ack_msg = sk.recv(100)

    cmd_res_msg = server_ack_msg.decode().split("|")

    print(cmd_res_msg)

    if cmd_res_msg[0] == "CMD_RESULT_SIZE":

        cmd_res_size = int(cmd_res_msg[1])

    ack_re = sk.send(b'CMD_RESULT')

    res = ''

    recv_size = 0

    while recv_size < cmd_res_size:

        server_reply = sk.recv(500)

        recv_size += len(server_reply)

        res += str(server_reply,'utf8')

    else:

        print(res)

        print('==========recv done=========')

sk.close()

1. First, you must create a request handler class by subclassing the BaseRequestHandlerclass and overriding its handle() method; this method will process incoming requests. 　　
2. Second, you must instantiate one of the server classes, passing it the server’s address and the request handler class.
3. Then call the handle_request() orserve_forever() method of the server object to process one or many requests.
4. Finally, call server_close() to close the socket.

Return an integer file descriptor for the socket on which the server is listening. This function is most commonly passed to selectors, to allow monitoring multiple servers in the same process.

Process a single request. This function calls the following methods in order: get_request(), verify_request(), and process_request(). If the user-provided handle() method of the handler class raises an exception, the server’s handle_error() method will be called. If no request is received within timeout seconds, handle_timeout() will be called and handle_request() will return.

Changed in version 3.3: Added service_actions call to the serve_forever method.

This is called in the serve_forever() loop. This method can be overridden by subclasses or mixin classes to perform actions specific to a given service, such as cleanup actions.

New in version 3.3.

shutdown() #停掉
Tell the serve_forever() loop to stop and wait until it does.

server_close()#关闭
Clean up the server. May be overridden.

The family of protocols to which the server’s socket belongs. Common examples are socket.AF_INET and socket.AF_UNIX.

The user-provided request handler class; an instance of this class is created for each request.

server_address#IP地址
The address on which the server is listening. The format of addresses varies depending on the protocol family; see the documentation for the socket module for details. For Internet protocols, this is a tuple containing a string giving the address, and an integer port number: ('127.0.0.1', 80), for example.

socket #
The socket object on which the server will listen for incoming requests.

The server classes support the following class variables:

allow_reuse_address  #准许重用地址,普通的socket重用地址

Whether the server will allow the reuse of an address. This defaults to False, and can be set in subclasses to change the policy.

The size of the request queue. If it takes a long time to process a single request, any requests that arrive while the server is busy are placed into a queue, up to request_queue_size requests. Once the queue is full, further requests from clients will get a “Connection denied” error. The default value is usually 5, but this can be overridden by subclasses.

socket_type  #协议类型
The type of socket used by the server; socket.SOCK_STREAM and socket.SOCK_DGRAM are two common values.

Timeout duration, measured in seconds, or None if no timeout is desired. If handle_request() receives no incoming requests within the timeout period, the handle_timeout() method is called.

There are various server methods that can be overridden by subclasses of base server classes like TCPServer; these methods aren’t useful to external users of the server object.

Must accept a request from the socket, and return a 2-tuple containing the new socket object to be used to communicate with the client, and the client’s address.

handle_error(request, client_address) #处理错误
This function is called if the handle() method of a RequestHandlerClass instance raises an exception. The default action is to print the traceback to standard output and continue handling further requests.

handle_timeout() #
This function is called when the timeout attribute has been set to a value other than None and the timeout period has passed with no requests being received. The default action for forking servers is to collect the status of any child processes that have exited, while in threading servers this method does nothing.

Calls finish_request() to create an instance of the RequestHandlerClass. If desired, this function can create a new process or thread to handle the request; the ForkingMixIn and ThreadingMixIn classes do this.

server_activate()
Called by the server’s constructor to activate the server. The default behavior for a TCP server just invokes listen() on the server’s socket. May be overridden.

server_bind() #内部调用
Called by the server’s constructor to bind the socket to the desired address. May be overridden.

verify_request(request, client_address) #判断一个请求是否合法

#!/usr/bin/python

# -*- coding: utf-8 -*-

import socketserver,os,sys

class MyTCPHandler(socketserver.BaseRequestHandler):

    def handle(self):

        print("new conn:",self.client_address)

        while True:

            data = self.request.recv(1024).strip()

            if not data:

                break

            print([self.client_address],data)

            self.request.sendall(data.upper())   

if __name__ == '__main__':

   port = int(sys.argv[1])

   ip_port = ('127.0.0.1',port)

   server = socketserver.ThreadingTCPServer(ip_port, MyTCPHandler)   #多线程实现并发

   #server  = socketserver.ForkingTCPServer(ip_port, MyTCPHandler)   #多进程实现并发

   #server = socketserver.TCPServer(ip_port, MyTCPHandler)           #单进程的阻塞模式

   server.serve_forever()

socketserver

#!/usr/bin/python

# -*- coding: utf-8 -*-

import socket,os,sys

port = int(sys.argv[1])

ip_port = ('127.0.0.1',port)

sk = socket.socket()

sk.connect(ip_port)

while True:

    inp = input('cmd : ').strip()

    if len(inp) == 0:

        continue

    if inp == 'q':

        break

    sk.send(bytes(inp,'utf8'))

    data = sk.recv(1024)

    print("server reply:",str(data,'utf8'))

sk.close()

socketclient