Python客戶端與服務端的簡單網頁程式設計範例

這篇文章主要介紹了Python簡單網路程式設計,詳細介紹了客戶端與服務端的具體實作技巧與相關注意事項,需要的朋友可以參考下

本文實例講述了Python簡單網路程式設計。分享給大家供大家參考，具體如下：

內容目錄

#1. 客戶端（client.py）
2. 服務端（server.py )

一、客戶端（client.py）

import socket
import sys
port = 70
host = sys.argv[1]
filename = sys.argv[2]
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, port))
fd = s.makefile("rw", 0)
fd.write(filename + "\n")
for line in fd.readlines():
  sys.stdout.write(line)

程式透過socket.socket()建立一個Socket，參數告訴系統需要一個Internet Socket進行TCP通訊。接著程式連結遠端的主機名，並提供檔案名稱。最後獲得回應後在螢幕上列印出來。

測試

python client.py quux.org /

顯示

iWelcome to gopher at quux.org! fake  (NULL) 0
i  fake  (NULL) 0
iThis server has a lot of information of historic interest, fake  (NULL) 0
ifunny, or just plain entertaining -- all presented in Gopher. fake  (NULL) 0
iThere are many mirrors here of rare or valuable files with the fake  (NULL) 0
iaim to preserve them in case their host disappears. PLEASE READ  fake  (NULL) 0
i"About This Server" FOR IMPORTANT NOTES AND LEGAL INFORMATION. fake  (NULL) 0
i  fake  (NULL) 0
0About This Server /About This Server.txt gopher.quux.org 70 +
1Archives  /Archives  gopher.quux.org 70 +
1Books /Books gopher.quux.org 70 +
1Communication /Communication gopher.quux.org 70 +
iThis directory contains the entire text of the book  fake  (NULL) 0
i"We the Media: Grassroots Journalism by the People, for the People"  fake  (NULL) 0
iby Dan Gillmor in various formats. fake  (NULL) 0
i  fake  (NULL) 0
iFeel free to download and enjoy.  fake  (NULL) 0
1Computers /Computers gopher.quux.org 70 +
1Current Issues and Events (Updated Apr. 23, 2002) /Current  gopher.quux.org 70 +
1Development Projects  /devel gopher.quux.org 70 +
0Gopher's 10th Anniversary /3.0.0.txt gopher.quux.org 70
1Government, Politics, Law, and Conflict  /Government gopher.quux.org 70 +
0How To Help  /How To Help.txt  gopher.quux.org 70 +
1Humor and Fun /Humor and Fun gopher.quux.org 70 +
1Index to Quux.Org /Archives/index gopher.quux.org 70
1Internet  /Internet  gopher.quux.org 70 +
1Other Gopher Servers  /Software/Gopher/servers  gopher.quux.org 70
1People /People gopher.quux.org 70 +
1Reference /Reference gopher.quux.org 70 +
1Software and Downloads /Software  gopher.quux.org 70 +
1The Gopher Project /Software/Gopher  gopher.quux.org 70
0What's New /whatsnew.txt  gopher.quux.org 70 +　

##

# coding: utf-8
import socket
host = ''
port = 51421
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((host, port))
s.listen(1)        #每次最多只有一个等候处理
print "Server is running on port %d; press Ctrl-C to terminate." %port
while 1:
  clientsock, clientaddr = s.accept()
  clientfile = clientsock.makefile('rw', 0)
  clientfile.write("Welcome, " + str(clientaddr) + "\n")
  clientfile.write("Please enter a string: ")
  line = clientfile.readline().strip()
  clientfile.write("You entered %d characters. \n" %len(line))
  clientfile.close()
  clientsock.close()

##

python server.py

###################################建立一個socket，設定成可重複使用的（reusable），綁定連接埠號碼51421（可選大於1024的任一值），呼叫listen（）###函數###，開始等待來自客戶端的請求，同時設定最多只有一個等候處理的連結。 ######主###循環###對a.accept（）函數呼叫開始，程式連接一個客戶端後立刻停止，接收使用者的輸入。 ######執行一個範例######先執行server.py###

jihite@ubuntu:~/web$ telnet localhost 51421
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Welcome, ('127.0.0.1', 59853)
Please enter a string: mm
You entered 2 characters.
Connection closed by foreign host.

###另開一個終端，連接localhost的51421埠。　###rrreee

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