import socket
server = socket.socket()
server.bind(("127.0.0.1",6969))
server.listen()con,addr=server.accept()
while True:data=con.recv(1024)data_uper=str(data,"utf-8").upper()con.send(bytes(data_uper,"utf-8"))

import socket
client = socket.socket()
client.connect(('127.0.0.1',6969))
x=input(">>:")
client.send(bytes("good 你好",encoding="utf-8"))
data=client.recv(1024)
print(str(data,"utf-8"))

import socket
server = socket.socket()
server.bind(("127.0.0.1",6969))
server.listen()
while True:con,addr=server.accept()print(addr)while True:try:data=con.recv(1024)#在程序正常退出，也就是con的tcp连接正常中断，data直接为0执行下一步except Exception as e:break   #防止在windows下，强制关闭，con通道错误而报错，linux下不用这样if not data:breakprint(str(data,"utf8"))x=input(">：")con.send(bytes(x,"utf-8"))

import socket
client = socket.socket()
client.connect(('127.0.0.1',6969))
while True:x=input(">>:")if not x:continue #解决在阻塞模型下，直接回车卡住的bugclient.send(bytes(x,encoding="utf-8"))data=client.recv(1024)print(str(data,"utf-8"))

import os
import socket
server = socket.socket()
server.bind(("127.0.0.1",6969))
server.listen()
while True:con,addr=server.accept()print(addr)while True:try:data=con.recv(1024)#在程序正常退出，也就是con的tcp连接正常中断，data直接为0执行下一步except Exception as e:break   #防止在windows下，强制关闭，con通道错误而报错，linux下不用这样if not data:breakcmd_line=str(data,"utf-8")cmd_result=os.popen(cmd_line,"r").read()if not cmd_result: #当os.popen执行非系统命令时，返回值为空cmd_result = "未知命令"cmd_result=bytes(cmd_result,"utf-8")cmd_result_len=bytes(str(len(cmd_result)),"utf-8")#int与bytes之间不能直接转换。#len 在str与bytes类型之间的长度是不一致的！！！print("发送数据长度",str(cmd_result_len,"utf-8"))con.send(cmd_result_len)flag=con.recv(1024)  #通过一次recv来解决两个send之间粘包的问题。con.send(cmd_result)

import socket
client = socket.socket()
client.connect(('127.0.0.1',6969))
while True:x=input(">>:")if not x:continueclient.send(bytes(x,encoding="utf-8"))recv_len=int(str(client.recv(1024),"utf-8"))client.send(bytes("ok","utf-8"))print(recv_len)data=bytes()while len(data) != recv_len:data += client.recv(1024)print(str(data,"utf-8"))

import os
import socket
server = socket.socket()
server.bind(("127.0.0.1",6969))
server.listen()while True:con,addr = server.accept()while True:cmd=str(con.recv(1024),"utf-8")print(cmd)cmd = cmd.split()if cmd[0] == "push":print(cmd[0])f = open(cmd[1], "rb")file_size = os.stat(cmd[1]).st_sizeprint(file_size)con.send(bytes(str(file_size), encoding="utf-8"))flag=con.recv(1024)# for line in f:#     con.send(line)data_size=0while file_size != data_size:data=f.read(1024)con.send(data)data_size += len(data)print(data_size)print("发送完毕")f.close()

import socket
import os
client = socket.socket()
client.connect(("127.0.0.1",6969))while True:cmd=bytes(input("->:"),"utf8")client.send(cmd)file_size = int(str(client.recv(1024), "utf-8"))client.send("ok".encode("utf-8"))data_len = 0f = open("1.new.avi","wb")while file_size != data_len:data = client.recv(1024)data_len += len(data)f.write(data)print(data_len)f.close()

import socketserverclass MyTCPHandler(socketserver.BaseRequestHandler):"""The request handler class for our server.It is instantiated once per connection to the server, and mustoverride the handle() method to implement communication to theclient."""def handle(self):# self.request is the TCP socket connected to the clientself.data = self.request.recv(1024).strip()print("{} wrote:".format(self.client_address[0]))print(self.data)# just send back the same data, but upper-cased
        self.request.sendall(self.data.upper())if __name__ == "__main__":HOST, PORT = "localhost", 9999# Create the server, binding to localhost on port 9999server = socketserver.TCPServer((HOST, PORT), MyTCPHandler)# Activate the server; this will keep running until you# interrupt the program with Ctrl-Cserver.serve_forever()