Am 11.02.2013 15:51, schrieb Itamar Turner-Trauring:
>
>
> On Mon, Feb 11, 2013 at 9:24 AM, Michael Schlenker <m...@contact.de
> <mailto:m...@contact.de>> wrote:
>
> Is there some pre-made solution, or would i have to hook into the
> connection setup of twisted.web and check the first few bytes for the
> signs of an SSL Handshake signature?
>
>
> Subclassing the HTTP protocol class and just adding a check in
> dataReceived is probably the easiest thing to do, yes. Might be worth
> filing a ticket for this as well. My guess is the logic would be
> something like "in dataReceived, if you've not hit first line, and any
> byte is non-ASCII, close connection", which has the nice property of
> being more general than just SSL. Or perhaps check what Apache does exactly.
>
Okay, solved it like this:
from twisted.web import server, http
class HTTPChannel(http.HTTPChannel):
"""
HTTP Channel that recognizes connection attempts via non-HTTP
and closes the connection in such cases.
"""
def __init__(self):
http.HTTPChannel.__init__(self)
self.__request_line_received = False
def lineReceived(self, line):
self.__request_line_received = True
http.HTTPChannel.lineReceived(self, line)
def dataReceived(self, data):
if not self.__request_line_received:
# check for any binary garbage, e.g. not ASCII
# e.g. ssl connection attempt
try:
data.decode('ascii')
except UnicodeDecodeError:
return self.transport.loseConnection()
http.HTTPChannel.dataReceived(self, data)
class Site(server.Site):
protocol = HTTPChannel
Works fine. Thx for the suggestion to check for ASCII.
Michael
--
Michael Schlenker
Software Architect
CONTACT Software GmbH Tel.: +49 (421) 20153-80
Wiener Straße 1-3 Fax: +49 (421) 20153-41
28359 Bremen
http://www.contact.de/ E-Mail: m...@contact.de
Sitz der Gesellschaft: Bremen
Geschäftsführer: Karl Heinz Zachries, Ralf Holtgrefe
Eingetragen im Handelsregister des Amtsgerichts Bremen unter HRB 13215
_______________________________________________
Twisted-Python mailing list
Twisted-Python@twistedmatrix.com
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
