HTTP POST发消息

业务需求：模拟TANX给DSP发消息，protobuf数据已弄好。

代码：

def PostDataToDSP(self,url,postdata):
  headers = {
　　　　#taobao文档规定
      'Content-Type':'application/octet-stream',
      #保持长连接
      'Connection':'Keep-Alive',
  }

  #把protobuf数据转成string
  payload = postdata.SerializeToString()

  conn = httplib.HTTPConnection(url)
  conn.request(method='POST',url='/',body = payload, headers = headers)
  #获取DSP的应答
  response = conn.getresponse()
  if 200 == response.status:
      print 'send successfully'
  else:
      print 'send failed'
  conn.close()
  return response