socket

1.客户端和服务端ssh

import socket,struct
import subprocess

phone = socket.socket( socket.AF_INET , socket.SOCK_STREAM )
phone.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
phone.bind(( '127.0.0.1', 8090 ))
phone.listen(5)

while True:
    conn,addr = phone.accept()
    while True:
        try:
            cmd = conn.recv(1024)
            if not cmd:continue
            res = subprocess.Popen(cmd.decode('utf-8'),
                                   shell = True ,
                                   stdout= subprocess.PIPE ,
                                   stderr= subprocess.PIPE )
            out_data = res.stdout.read()
            error_data = res.stderr.read()
            data_size = len(out_data) + len(error_data)
            conn.send(struct.pack("i",data_size))
            conn.send(out_data)
            conn.send(error_data)

        except Exception:
            break
    conn.close()
phone.close()

import socket,struct

phone = socket.socket(socket.AF_INET , socket.SOCK_STREAM)
phone.connect(('127.0.0.1' , 8090))

while True:
    cmd = input('input cmd:').strip()
    if not cmd: continue
    phone.send(bytes(cmd,encoding='utf-8'))
    baotou = phone.recv(4)
    data_size = struct.unpack("i",baotou)[0]
    recive_data = b""
    recive_size = 0
    while recive_size < data_size:
        data = phone.recv(1024)
        recive_size += len(data)
        recive_data += data
    print(recive_data.decode("utf-8"))
phone.close()

 2.发送报头长度 报头 数据 ssh

#coding:utf-8
import socket
import struct
import json
import subprocess
phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
ip_port=('127.0.0.1',8081)
phone.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
phone.bind(ip_port)
phone.listen(100)

#链接循环
while True:
    conn,addr=phone.accept()
    #通讯循环
    while True:
        try:
            cmd=conn.recv(1024)
            res=subprocess.Popen(cmd.decode('utf-8'),
                             shell=True,
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
            out_res=res.stdout.read()
            err_res=res.stderr.read()
            data_size=len(out_res)+len(err_res)
            head_dic={'data_size':data_size}
            head_json=json.dumps(head_dic)
            head_bytes=head_json.encode('utf-8')

            #part1:先发报头的长度
            head_len=len(head_bytes)
            conn.send(struct.pack('i',head_len))
            #part2:再发送报头
            conn.send(head_bytes)
            #part3:最后发送数据部分
            conn.send(out_res)
            conn.send(err_res)

        except Exception:
            break

    conn.close()
phone.close()

import socket
import struct
import json
phone = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
ip_port = ('127.0.0.1', 8081)
phone.connect(ip_port)
while True:
    cmd = input('>>: ').strip()
    if not cmd: continue
    phone.send(bytes(cmd, encoding='utf-8'))

    # part1:先收报头的长度
    head_struct=phone.recv(4)
    head_len=struct.unpack('i',head_struct)[0]

    # part2:再收报头
    head_bytes=phone.recv(head_len)
    head_json=head_bytes.decode('utf-8')

    head_dic=json.loads(head_json)
    data_size = head_dic['data_size']

    #part3：收数据
    recv_size = 0
    recv_data = b''
    while recv_size < data_size:
        data = phone.recv(1024)
        recv_size += len(data)
        recv_data += data

    print(recv_data.decode('utf-8'))
phone.close()

 3.  FTP

import socket,json,os,struct,subprocess


class Ftp_Server:
    sock_famiy = socket.AF_INET
    sock_type = socket.SOCK_STREAM
    allow_reuse_address = False
    request_queue_size = 100
    max_package_size = 1024
    coding = "utf-8"
    server_dir = '/Users/centos/PycharmProjects/py_fullstack_s4/day35/file_upload'

    def __init__(self,server_addr,bind_active=True):
        self.server_addr=server_addr
        self.socket = socket.socket(self.sock_famiy,self.sock_type)

        if bind_active:
            try:
                self.server_bind()

            except Exception:
                self.server_close()

    def server_bind(self):
        if self.allow_reuse_address:
            self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        self.socket.bind(self.server_addr)
        self.socket.listen(self.request_queue_size)
    def get_request(self):
        return self.socket.accept()

    def server_close(self):
        self.socket.close()

    def run(self):
        while True:
            self.conn,self.client_addr = self.get_request()
            while True:
                try:
                    head_struck = self.conn.recv(4)
                    if not head_struck:break
                    head_len = struct.unpack("i",head_struck)[0]
                    head_json = self.conn.recv(head_len).decode(self.coding)
                    head_dic = json.loads(head_json)
                    cmd = head_dic["cmd"]
                    if hasattr(self,cmd):
                        func = getattr(self,cmd)
                        func(head_dic)
                except Exception:
                    break

    def put(self,args):
        filepath = os.path.join(self.server_dir,args["filename"])
        filesize = args["filesize"]
        recv_size = 0
        with open(filepath,"wb") as f:
            while recv_size < filesize:
                recv_data = self.conn.recv(self.max_package_size)
                f.write(recv_data)
                recv_size += len(recv_data)
                print('recvsize:%s filesize:%s' % (recv_size, filesize))

    def get(self,args):
        filepath = os.path.join(self.server_dir,args["filename"])

        filename = args["filename"]
        filesize = os.path.getsize(filepath)
        head_dict={"filename":os.path.basename(filepath),"filesize":filesize}
        print(head_dict)
        head_json=json.dumps(head_dict)
        head_json_bates=bytes(head_json,encoding=self.coding)
        head_struck=struct.pack("i",len(head_json_bates))
        self.conn.send(head_struck)
        self.conn.send(head_json_bates)

        with open(filepath,"rb") as f:
            for i in f:
                self.conn.send(i)



obj = Ftp_Server(("127.0.0.1",9020))
obj.run()

import socket,json,os,struct

class Ftpclient:
    address_family = socket.AF_INET
    socket_type = socket.SOCK_STREAM
    allow_reuse_address = False
    max_packet_size = 1024
    coding = "utf-8"
    request_queue_size = 100
    server_dir = "/Users/centos/PycharmProjects/py_fullstack_s4/day37/file_upload"

    def __init__(self,server_address,connect=True):
        self.server_address=server_address
        self.socket=socket.socket(self.address_family,self.socket_type)
        if connect:
            try:
                self.client_connect()
            except Exception:
                self.client_clode()

    def client_connect(self):
        self.socket.connect(self.server_address)
    def client_close(self):
        self.socket.close()
    def run(self):
        while True:
            inp = input(">>: ").strip()
            if not inp:continue
            l= inp.split()
            cmd=l[0]
            if hasattr(self,cmd):
                func=getattr(self,cmd)
                func(l)

    def put(self,arg):
        cmd=arg[0]
        filename=arg[1]
        filesize=os.path.getsize(filename)
        head_dict={"cmd":cmd,"filename":os.path.basename(filename),"filesize":filesize}
        head_json=json.dumps(head_dict)
        head_json_bates=bytes(head_json,encoding=self.coding)
        head_struck=struct.pack("i",len(head_json_bates))
        self.socket.send(head_struck)
        self.socket.send(head_json_bates)
        send_size=0
        with open(filename,"rb") as f:
            for line in f:
                self.socket.send(line)
                send_size+=len(line)
                print(send_size)
            else:
                print("upload successful")

    def get(self,args):
        cmd = args[0]
        filename = args[1]
        filesize = len(args)
        head_dict={"cmd":cmd,"filename":os.path.basename(filename),"filesize":filesize}
        head_json=json.dumps(head_dict)
        head_json_bates=bytes(head_json,encoding=self.coding)
        head_struck=struct.pack("i",len(head_json_bates))
        self.socket.send(head_struck)
        self.socket.send(head_json_bates)

        filepath = os.path.join(self.server_dir,filename)
        while True:
            try:
                head_struck = self.socket.recv(4)

                head_len = struct.unpack("i", head_struck)[0]
                head_json = self.socket.recv(head_len).decode(self.coding)
                head_dic = json.loads(head_json)
                print(head_dict)
                recv_size = 0
                print(filepath)
                with open(filepath,"wb") as f:
                    while recv_size < head_dic["filesize"]:
                        data = self.socket.recv(self.max_packet_size)
                        f.write(data)
                        recv_size += len(data)

            except Exception:
                break



obj = Ftpclient(("127.0.0.1",9020))
obj.run()

2. socketserver

　　基于tcp的套接字，关键就是两个循环，一个链接循环，一个通信循环

　　socketserver模块中分两大类：server类（解决链接问题)

　　　　　　　　　　　　　　　　 request类（解决通信问题）

 　　server类

　　　　

 

　　request类

 

　　

　　继承关系:

　　

 

 

 

 

 

 

 

import socketserver,json,os,struct,subprocess


class Ftp_Server(socketserver.BaseRequestHandler):

    request_queue_size = 100
    max_package_size = 1024
    coding = "utf-8"
    server_dir = '/Users/centos/PycharmProjects/py_fullstack_s4/day35/file_upload'


    def handle(self):
        while True:
            try:
                head_struck = self.request.recv(4)
                if not head_struck:break
                head_len = struct.unpack("i",head_struck)[0]
                head_json = self.request.recv(head_len).decode(self.coding)
                head_dic = json.loads(head_json)
                cmd = head_dic["cmd"]
                if hasattr(self,cmd):
                    func = getattr(self,cmd)
                    func(head_dic)
            except Exception:
                break

    def put(self,args):
        filepath = os.path.join(self.server_dir,args["filename"])
        filesize = args["filesize"]
        recv_size = 0
        with open(filepath,"wb") as f:
            while recv_size < filesize:
                recv_data = self.request.recv(self.max_package_size)
                f.write(recv_data)
                recv_size += len(recv_data)
                print('recvsize:%s filesize:%s' % (recv_size, filesize))

    def get(self,args):
        filepath = os.path.join(self.server_dir,args["filename"])

        filename = args["filename"]
        filesize = os.path.getsize(filepath)
        head_dict={"filename":os.path.basename(filepath),"filesize":filesize}
        print(head_dict)
        head_json=json.dumps(head_dict)
        head_json_bates=bytes(head_json,encoding=self.coding)
        head_struck=struct.pack("i",len(head_json_bates))
        self.request.send(head_struck)
        self.request.send(head_json_bates)

        with open(filepath,"rb") as f:
            for i in f:
                self.request.send(i)




obj = socketserver.ThreadingTCPServer(("127.0.0.1",9000),Ftp_Server)

obj.serve_forever()

import socket,json,os,struct

class Ftpclient:
    address_family = socket.AF_INET
    socket_type = socket.SOCK_STREAM
    allow_reuse_address = False
    max_packet_size = 1024
    coding = "utf-8"
    request_queue_size = 100
    server_dir = "/Users/centos/PycharmProjects/py_fullstack_s4/day37/file_upload"

    def __init__(self,server_address,connect=True):
        self.server_address=server_address
        self.socket=socket.socket(self.address_family,self.socket_type)
        if connect:
            try:
                self.client_connect()
            except Exception:
                self.client_clode()

    def client_connect(self):
        self.socket.connect(self.server_address)
    def client_close(self):
        self.socket.close()
    def run(self):
        while True:
            inp = input(">>: ").strip()
            if not inp:continue
            l= inp.split()
            cmd=l[0]
            if hasattr(self,cmd):
                func=getattr(self,cmd)
                func(l)

    def put(self,arg):
        cmd=arg[0]
        filename=arg[1]
        filesize=os.path.getsize(filename)
        head_dict={"cmd":cmd,"filename":os.path.basename(filename),"filesize":filesize}
        head_json=json.dumps(head_dict)
        head_json_bates=bytes(head_json,encoding=self.coding)
        head_struck=struct.pack("i",len(head_json_bates))
        self.socket.send(head_struck)
        self.socket.send(head_json_bates)
        send_size=0
        with open(filename,"rb") as f:
            for line in f:
                self.socket.send(line)
                send_size+=len(line)
                print(send_size)
            else:
                print("upload successful")

    def get(self,args):
        cmd = args[0]
        filename = args[1]
        filesize = len(args)
        head_dict={"cmd":cmd,"filename":os.path.basename(filename),"filesize":filesize}
        head_json=json.dumps(head_dict)
        head_json_bates=bytes(head_json,encoding=self.coding)
        head_struck=struct.pack("i",len(head_json_bates))
        self.socket.send(head_struck)
        self.socket.send(head_json_bates)

        filepath = os.path.join(self.server_dir,filename)
        while True:
            try:
                head_struck = self.socket.recv(4)

                head_len = struct.unpack("i", head_struck)[0]
                head_json = self.socket.recv(head_len).decode(self.coding)
                head_dic = json.loads(head_json)
                print(head_dict)
                recv_size = 0
                print(filepath)
                with open(filepath,"wb") as f:
                    while recv_size < head_dic["filesize"]:
                        data = self.socket.recv(self.max_packet_size)
                        f.write(data)
                        recv_size += len(data)

            except Exception:
                break



obj = Ftpclient(("127.0.0.1",9000))
obj.run()