Question

HTTPConnection.request() documentation说：

如果存在body参数，则它应该是标题完成后要发送的数据字符串。或者，它可以是一个打开的文件对象，在这种情况下发送文件的内容;这个文件对象应该支持fileno（）和read（）方法。

所以这通常有效：

import httplib
import os

f = open('data.dat', 'rb')
conn = httplib.HTTPSConnection('localhost', 8000)
conn.request("PUT", "/", f, {
    "Content-Length": os.fstat(f.fileno()).st_size,
    "Content-Type": "application/octet-stream",
})

但如果data.dat大于~5.5MB，则停止工作：

Traceback (most recent call last):
  File "script.py", line 81, in <module>
    conn.request("PUT", "/", f, {
  File "C:\Python27\lib\httplib.py", line 1057, in request
    self._send_request(method, url, body, headers)
  File "C:\Python27\lib\httplib.py", line 1097, in _send_request
    self.endheaders(body)
  File "C:\Python27\lib\httplib.py", line 1053, in endheaders
    self._send_output(message_body)
  File "C:\Python27\lib\httplib.py", line 901, in _send_output
    self.send(message_body)
  File "C:\Python27\lib\httplib.py", line 870, in send
    self.sock.sendall(datablock)
  File "C:\Python27\lib\ssl.py", line 743, in sendall
    v = self.send(data[count:])
  File "C:\Python27\lib\ssl.py", line 709, in send
    v = self._sslobj.write(data)
socket.error: [Errno 10054] An existing connection was forcibly closed by the remote host

但是如果参数f被f.read()替换，它会继续工作！

为什么HTTPSConnection.request（）有时不能与文件对象一起使用？

0 个答案: