Stop using uuid for choose_boundary()
This solution is about 4 times faster than uuid.uuid4().hex method
MODIFY
urllib3/filepost.py
urllib3/filepost.py
from __future__ import absolute_import
+import binascii
import codecs
+import os
from io import BytesIO
@@ -13,16 +15,11 @@ writer = codecs.lookup('utf-8')[3]
def choose_boundary():
"""
Our embarrassingly-simple replacement for mimetools.choose_boundary.
-
- We are lazily loading uuid here, because we don't want its issues
-
- https://bugs.python.org/issue5885
- https://bugs.python.org/issue11063
-
- to affect our entire library.
"""
- from uuid import uuid4
- return uuid4().hex
+ boundary = binascii.hexlify(os.urandom(16))
+ if six.PY3:
+ boundary = boundary.decode('ascii')
+ return boundary
def iter_field_objects(fields):
@@ -72,7 +69,7 @@ def encode_multipart_formdata(fields, boundary=None):
:param boundary:
If not specified, then a random boundary will be generated using
- :func:`mimetools.choose_boundary`.
+ :func:`urllib3.filepost.choose_boundary`.
"""
body = BytesIO()
if boundary is None:

Stop using uuid for choose_boundary()

This solution is about 4 times faster than uuid.uuid4().hex method