#coding=gbk
'''
socket 給百度發送http請求

連接成功后，發送http的get請求，所搜索功能

'''
import socket
import sys
import time
if __name__=='__main__':
??? #創建套接字
??? try :
??????? sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
??? except socket.eorror,e:
??????? print 'socket false:%s'%e
??? print 'socket ...'
???
??? #連接百度ip
??? try :
??????? sock.connect(('220.181.111.148',80))
??? except socket.error,e:
??????? print 'connect false %s'%e
??????? sock.close()
??? print 'connect ...'
???
??? #發送百度首頁面請求并且保持連接
??? try :
??????? print 'send start...'
??????? str='GET / HTTP/1.1\r\nHost:www.baidu.com\r\nConnection:keep-alive\r\n\r\n'
??????? sock.send(str)
??? except socket.eorror,e:
??????? print 'send false'
??????? sock.close()
???
??? data=''
??? data = sock.recv(1024)
??? while (1):?????? '''如何判斷數據接收完畢，在發送http 最前端,
??????????????????????? 包含發送數據文件大小屬性Content-Length，
??????????????????????? 用字符匹配方式取得文件大小,
??????????????????????? 同過大小判斷是否接收完畢。
??????????????????????? '''
??????? print data
??????? beg = data.find('Content-Length:',0,len(data))
??????? end = data.find('Content-Type:',0,len(data))
??????? print beg
??????? print end
??????? if(beg == end):
??????????? print 'connecting closed'
??????????? break
??????? num = long(data[beg+16:end-2])
??????? print num
??????? nums = 0
??????? while (1):
??????????? data=sock.recv(1024)
??????????? print data
??????????? nums +=len(data)
??????????? if(nums >= num):
??????????????? break
??????? word = raw_input('please input your word----->')
??????? str='''GET /s?wd=''' + word + ''' HTTP/1.1
Host:www.baidu.com
Connection: Keep-Alive

'''
??????? print str
??????? sock.send(str)
??????? data = ''
??????? data = sock.recv(1024)???
??? sock.close()
??? print data