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Python客戶端與服務端的簡單網頁程式設計範例

黄舟
發布: 2017-05-28 11:11:08
原創
1998 人瀏覽過

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)

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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)

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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

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python client.py quux.org /

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顯示

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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 + 

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##

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<strong># coding: utf-8

import socket

host = &#39;&#39;

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(&#39;rw&#39;, 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()</strong>

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##

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python server.py

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###################################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###

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jihite@ubuntu:~/web$ telnet localhost 51421

Trying 127.0.0.1...

Connected to localhost.

Escape character is &#39;^]&#39;.

Welcome, (&#39;127.0.0.1&#39;, 59853)

Please enter a string: mm

You entered 2 characters.

Connection closed by foreign host.

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

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