我正在使用Flask-uploads将文件上传到我的 Flask 服务器。允许的最大大小是通过使用设置的flaskext.uploads.patch_request_class(app, 16 * 1024 * 1024)
。
我的客户端应用程序(单元测试)使用请求来发布一个很大的文件。
我可以看到我的服务器返回一个带有 status 的 HTTP 响应413: Request Entity Too Large
。但是客户端在请求代码中引发了异常
ConnectionError: HTTPConnectionPool(host='api.example.se', port=80): Max retries exceeded with url: /images (Caused by <class 'socket.error'>: [Errno 32] Broken pipe)
我的猜测是服务器断开接收套接字并将响应发送回客户端。但是当客户端收到一个损坏的发送套接字时,它会引发异常并跳过响应。
问题:
- 我对 Flask-Uploads 和 requests 的猜测是否正确?
- Flask-Uploads 和 request 处理 413 错误是否正确?
- 当帖子很大时,我是否应该期望我的客户端代码返回一些 html?
更新
这是一个重现我的问题的简单示例。
服务器.py
from flask import Flask, request
app = Flask(__name__)
app.config['MAX_CONTENT_LENGTH'] = 1024
@app.route('/post', methods=('POST',))
def view_post():
return request.data
app.run(debug=True)
客户端.py
from tempfile import NamedTemporaryFile
import requests
def post(size):
print "Post with size %s" % size,
f = NamedTemporaryFile(delete=False, suffix=".jpg")
for i in range(0, size):
f.write("CoDe")
f.close()
# Post
files = {'file': ("tempfile.jpg", open(f.name, 'rb'))}
r = requests.post("http://127.0.0.1:5000/post", files=files)
print "gives status code = %s" % r.status_code
post(16)
post(40845)
post(40846)
客户的结果
Post with size 16 gives status code = 200
Post with size 40845 gives status code = 413
Post with size 40846
Traceback (most recent call last):
File "client.py", line 18, in <module>
post(40846)
File "client.py", line 13, in post
r = requests.post("http://127.0.0.1:5000/post", files=files)
File "/opt/python_env/renter/lib/python2.7/site-packages/requests/api.py", line 88, in post
return request('post', url, data=data, **kwargs)
File "/opt/python_env/renter/lib/python2.7/site-packages/requests/api.py", line 44, in request
return session.request(method=method, url=url, **kwargs)
File "/opt/python_env/renter/lib/python2.7/site-packages/requests/sessions.py", line 357, in request
resp = self.send(prep, **send_kwargs)
File "/opt/python_env/renter/lib/python2.7/site-packages/requests/sessions.py", line 460, in send
r = adapter.send(request, **kwargs)
File "/opt/python_env/renter/lib/python2.7/site-packages/requests/adapters.py", line 354, in send
raise ConnectionError(e)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=5000): Max retries exceeded with url: /post (Caused by <class 'socket.error'>: [Errno 32] Broken pipe)
我的版本
$ pip freeze
Flask==0.10.1
Flask-Mail==0.9.0
Flask-SQLAlchemy==1.0
Flask-Uploads==0.1.3
Jinja2==2.7.1
MarkupSafe==0.18
MySQL-python==1.2.4
Pillow==2.1.0
SQLAlchemy==0.8.2
Werkzeug==0.9.4
blinker==1.3
itsdangerous==0.23
passlib==1.6.1
python-dateutil==2.1
requests==2.0.0
simplejson==3.3.0
six==1.4.1
virtualenv==1.10.1
voluptuous==0.8.1
wsgiref==0.1.2