Python socket模組方法實現詳解
阿新 • • 發佈:2020-01-09
這篇文章主要介紹了Python socket模組方法實現詳解,文中通過示例程式碼介紹的非常詳細,對大家的學習或者工作具有一定的參考學習價值,需要的朋友可以參考下
socket ssh (不帶防止粘包的方法)
#! /usr/bin/env python # -*- coding:utf-8 -*- # Author Ian Ying # mail: [email protected] import socket import os server = socket.socket() server.bind(('localhost',6969)) #繫結被監聽埠 server.listen(5) #監聽埠 while True: print("我要開始等電話了") conn,addr = server.accept() # 就是等待的意思 #conn就是客戶端連過來的時候,在伺服器端為其生成的一個連線例項 print("電話來了%s"% [conn,addr]) while True: data = conn.recv(1024) if not data: print('client is lost.') break # res = os.popen(data).read() #popen就是開啟命令執行,read就是獲取結果 # with open('filename','r') as ret: #這兩行就 可以用過來傳輸檔案了。 # data = ret.read() print('receive:',data) conn.send(data.upper()) server.close()
socket client 模組
#! /usr/bin/env python # -*- coding:utf-8 -*- # Author Ian Ying # mail: [email protected] import socket client = socket.socket() #宣告socket型別,同時生成socket連結物件 client.connect(('localhost',6969)) #localhost就是本機地址 while True: msg = input('input msg >>:').strip() if len(msg) == 0: continue #檢查msg的資訊,防止無輸入資訊 #client.send(b"Hello,world!") #傳送資訊 client.send(msg.encode('utf-8')) data = client.recv(1024) #預設接受1024位元組,就是1k # with open('filename','w') as ret: # 這兩行就 可以用過來傳輸檔案了。 # ret = data.write() print(data.decode()) client.close() #關閉埠
防止粘包的socket_ssh.py
#! /usr/bin/env python # -*- coding:utf-8 -*- # Author Ian Ying # mail: [email protected] import socket import os server = socket.socket() server.bind(('localhost',addr = server.accept() # 就是等待的意思 #conn就是客戶端連過來的時候,在伺服器端為其生成的一個連線例項 while True: data = conn.recv(1024).decode() print("電話來了%s" % type(data)) # if type(data) is str: # data = data.strip() if not data: print('client is lost.') break cmd_res = os.popen(data).read() #popen就是開啟命令執行,read就是獲取結果 cmd_res_size = str(len(cmd_res.encode("utf-8"))) print("before send",len(cmd_res),"size after encode",cmd_res_size) if len(cmd_res) == 0: print("there is no output.") res_warning = "there is no output." conn.send(res_warning.encode("utf-8")) continue else: conn.send(cmd_res_size.encode("utf8")) print(conn.recv(1024).decode()) #通過接收資料的形式來強制傳送緩衝區的資料,防止粘包。 # with open('filename','r') as ret: #這兩行就 可以用過來傳輸檔案了。 # data = ret.read() #print('receive:',data) print('receive:',data) conn.send(cmd_res.encode("utf-8")) # conn.send(bytes(cmd_res)) #不可行。傳輸的時候是需要encoding server.close()
socket_client.py
#! /usr/bin/env python # -*- coding:utf-8 -*- # Author Ian Ying # mail: [email protected] import socket client = socket.socket() #宣告socket型別,同時生成socket連結物件 client.connect(('localhost',world!") #傳送資訊 client.send(msg.encode('utf-8')) received_size = client.recv(1024).decode() #用來記錄接受的資料大小 print("接收的資料大小",received_size) received_cont = b'' received_cont_size = 0 # 用來判斷接受資料的大小 if received_size != "there is no output." : client.send("準備好了,可以傳送。".encode()) #傳送確認資訊,以防止粘包 received_size = int(received_size) #資料需要變成int才能進行判斷 while received_size != received_cont_size: #判斷encode後的長度是否一致。 received_cont_for_test = client.recv(1024) received_cont_size += int(len(received_cont_for_test)) received_cont = received_cont + received_cont_for_test print("當前結束後的資料大小為:",received_cont_size) # print(received_cont_size) else: print("資料接收完成,接收的資料大小為:",received_cont_size) print("接收的內容為:\n",received_cont.decode(),"\n") else: print("output:\n",received_size) # data = client.recv(1024) #預設接受1024位元組,就是1k # with open('filename','w') as ret: # 這兩行就 可以用過來傳輸檔案了。 # ret = data.write() # print(data.decode()) # print(str(data)) client.close() #關閉埠
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