python编写http代理获取json数据----------------------（1）

#coding=utf-8
import socket
import thread
import urlparse
import select
import threading
import re
import json

BUFLEN=8192


class Proxy(object):
def __init__(self,conn,addr):
self.source=conn
self.request=""
self.Json=""
self.headers={}
self.destnation=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
self.run()

def get_headers(self):
header=''
while True:
header+=self.source.recv(BUFLEN)
index=header.find('\n')
if index >0:
break
#firstLine,self.request=header.split('\r\n',1)
firstLine=header[:index]
self.request=header[index+1:]
self.headers['method'],self.headers['path'],self.headers['protocol']=firstLine.split()

def conn_destnation(self):
url=urlparse.urlparse(self.headers['path'])
hostname=url[1]
port="80"
if hostname.find(':') >0:
addr,port=hostname.split(':')
else:
addr=hostname
port=int(port)
ip=socket.gethostbyname(addr)
#print ip,port
self.destnation.connect((ip,port))
data="%s %s %s\r\n" %(self.headers['method'],self.headers['path'],self.headers['protocol'])
self.destnation.send(data+self.request)
contentType=re.search(r'{',self.request,re.S)
xmlyHost=re.search(r'Host: (.*)\.ximalaya\.(.*)',self.request,re.S)
item=re.findall('({.+)',self.request,re.S)
#filename=re.findall('"serviceId" : "(\w+)"',self.request,re.S)
item=item[0].replace("\n ","").decode("utf-8")
item=re.findall('\"props\"\s*:(.+})\,',item,re.S)
item=item[0].replace(" ","")
#对json文件编码
json_dumps=json.dumps(item,sort_keys=True)
#对json文件解码
json_respone=json.loads(json_dumps)
if contentType and xmlyHost:
print self.request
#print item
#print json_dumps
print json_respone




def renderto(self):
readsocket=[self.destnation]
while True:
data=''
(rlist,wlist,elist)=select.select(readsocket,[],[],3)
if rlist:
data=rlist[0].recv(BUFLEN)
if len(data)>0:
self.source.send(data)
else:
break
def run(self):
self.get_headers()
self.conn_destnation()
self.renderto()



class Server(object):

def __init__(self,host,port):
self.host=host
self.port=port
self.server=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
self.server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.server.bind((host,port))
self.server.listen(5)


def start(self):
while True:
try:
conn,addr=self.server.accept()
Proxy(conn,addr)
except:
pass


s=Server('127.0.0.1',8889)
threads=[]
for i in range(1):
t=threading.Thread(target=s.start,args=())
threads.append(t)
if __name__=='__main__':
#启动线程
for i in threads:
i.start()
#keep thread
for i in threads:
i.join()