For my web service, I wrote some logic to prevent multipart/form-dataPOSTs more than, say, 4mb.
This boils down to the following (I removed all use of WebOb and simply reduced it to simple vanilla WSGI code):
import paste.httpserver
form = """\
<html>
<body>
<form method="post" enctype="multipart/form-data" action="/">
<input type="file" name="photopicker" />
<input type="submit" />
</form>
</body>
</html>
"""
limit = 4 * 1024 * 1024
def upload_app(environ, start_response):
if environ['REQUEST_METHOD'] == 'POST':
if int(environ.get('CONTENT_LENGTH', '0')) > limit:
start_response('400 Ouch', [('content-type', 'text/plain')])
return ["Upload is too big!"]
start_response('200 OK', [('content-type', 'text/html')])
return [form]
paste.httpserver.serve(upload_app, port=7007)
The logic shown works correctly when testing a device. But as soon as I tried to send actual files larger than 4 MB in size to this endpoint, I received such errors on the client side:
Error 101 (net::ERR_CONNECTION_RESET): Unknown error. from google chromeThe connection to the server was reset while the page was loading. from firefox
The same error occurs when using the wsgirefPython built-in HTTP server .
: environ['wsgi.input'].read() HTTP 400, reset . , . , , .
HTTP: , TCP- HTTP- . , close -ing shutdown, .
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