Mailman 3 May 2003 - Twisted

[Twisted-Python] ReconnectingClientFactory.stopTrying
by Eric C. Newton May 3, 2003

May 3, 2003

RedHat 9.0 Twisted 1.0.4 I have two servers, A and B, connected over a network which may, or may not be working well. Server A wants to send a bunch of data over to Server B. I'm using ReconnectingClientFactory to get A connected to B even in the presence of failures. Once Server A dumps the data on B, it should disconnect and go back to doing it's (unrelated) work, and close the connection on B. ReconnectingClientFactory has "stopTrying" which I call to prevent future connections from … [View More]

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[Twisted-Python] Updated TLS patch
by Jp Calderone May 3, 2003

May 3, 2003

I've taken Jeremy Rossi's TLS patch and updated it for current CVS, and also cleaned up the parts of it that broke regular TCP when SSL was unavailable. What I have been completely unable to do is prevent this from introducing a branch/function call into the common path for doRead/doWrite, even when TLS is not in use. In order of desirability (imho), this can be fixed by: Rewrite tcp.py, more or less completely, *without* juggling methods as it currently does. Take the _TLS_* … [View More]

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[Twisted-Python] website down?
by Justin Ryan May 2, 2003

May 2, 2003

Is there a problem with the twistedmatrix.com server? Port 80 takes ~15-30s to answer, and never responds to a GET / (though my browser did show a title after several minutes at one point).. -j

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[Twisted-Python] adbapi question
by Jon Dyte May 2, 2003

May 2, 2003

Hi Below is a small script. My question is what is the correct way to exit after using the adbapi stuff. The script as it stands just hangs the terminal until I Ctrl-Z and kill it. sample run jon> python simpledb.py jon jon jon Done 0 finished {1026: <connection object at 0x8228048>} 0 [<_MainThread(MainThread, started)>, <Thread(PoolThread-136416140-1, started)>] Jon import sys import threading import pprint from twisted.enterprise import adbapi from twisted.internet … [View More]

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[Twisted-Python] NNTP/SMTP authentication
by Abe Fettig May 2, 2003

May 2, 2003

Hi folks, In order to really get NNTP and SMTP (securely) integrated with Hep I need to get authentication working. Both of these protocols support authentication, although it's not required by the core RFCs. But as far as I can tell neither of the modules in twisted/protocols supports authentication at the moment. Is anyone working on this already? If not, I'd like to do it myself, and I'd appreciate some help in understanding the 'right' way to implement authentication in Twisted. I've … [View More]

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[Twisted-Python] Twisted 1.0.4 - Typo in code
by Francois Pinard May 2, 2003

May 2, 2003

Hi, a mini-tiny nit. In Twisted-1.0.4/twisted/persisted/styles.py, the doc-string writes "peristed" instead of "persisted". P.S. - Is there an email address I could use for such nits, instead of bothering the whole list? -- François Pinard http://www.iro.umontreal.ca/~pinard

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[Twisted-Python] reactors and sys.exc_value
by Anthony Baxter May 1, 2003

May 1, 2003

It looks like pretty much all of the reactors use sys.exc_value in an exception handler. Is there a reason this is done instead of the much safer sys.exc_info()[1] ? Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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Re: [Twisted-Python] twisted 30% slower than asyncore?
by Anthony Baxter May 1, 2003

May 1, 2003

The following patch to t.i.default.py removes the creation of the 'Failure' objects in the common case of connectionDone or connectionLost, instead using a cache of two existing objects. The second patch (which I've already emailed to Itamar, but will send here as well for completeness) makes a similar change to the code in tcp.py. The two combined make a test over the loopback interface go from around 300 request/second to about 450 requests/second when serving very small objects (2K) from … [View More]apache on the same host. There's a bunch of other speedups possible in SelectReactor.doSelect() - making globals local, &c. Anthony --- ../../../../twisted/internet/default.py Tue Apr 22 01:32:15 2003 +++ default.py Thu May 1 18:38:20 2003 @@ -422,7 +422,12 @@ reads=reads, writes=writes, rhk=reads.has_key, - whk=writes.has_key): + whk=writes.has_key, + faildict={ + error.ConnectionDone:failure.Failure(error.ConnectionDone()), + error.ConnectionLost:failure.Failure(error.ConnectionLost()), + } + ): """Run one iteration of the I/O monitor loop. This will run all selectables who had input or output readiness @@ -479,7 +484,11 @@ self.removeReader(selectable) self.removeWriter(selectable) try: - selectable.connectionLost(failure.Failure(why)) + f = faildict.get(why.__class__) + if f: + selectable.connectionLost(f) + else: + selectable.connectionLost(failure.Failure(why)) except: log.deferr() log.logOwner.disown(selectable) --- twisted/internet/tcp.py 22 Apr 2003 20:31:16 -0000 1.115 +++ twisted/internet/tcp.py 1 May 2003 06:55:26 -0000 @@ -468,7 +468,7 @@ except: log.deferr() - def loseConnection(self): + def loseConnection(self, connDone=failure.Failure(main.CONNECTION_DONE)): """Stop accepting connections on this port. This will shut down my socket and call self.connectionLost(). @@ -476,8 +476,7 @@ self.disconnecting = 1 self.stopReading() if self.connected: - self.reactor.callLater(0, self.connectionLost, - failure.Failure(main.CONNECTION_DONE)) + self.reactor.callLater(0, self.connectionLost, connDone) stopListening = loseConnection [View Less]

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[Twisted-Python] WovenQuotes Howto Problem
by steve＠shrogers.com May 1, 2003

May 1, 2003

I'm playing with Twisted 1.0.4. After making it through the first couple of TwistedQuotes examples, I get the following failure with the TwistedQuotes example. 2003/04/28 10:05 [HTTPChannel,0,127.0.0.1] exceptions.TypeError: getData() takes exactly 1 argument (2 given)

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[Twisted-Python] twisted 30% slower than asyncore?
by Anthony Baxter May 1, 2003

May 1, 2003

I kinda suspected that twisted might be slower than asyncore for the straight go-hell-for-leather usage in pythondirector, but I'd not got around to actually testing it. It seems like it's nearly 30% slower than the equivalent asyncore code! This seems a bit higher than I'd expect -- but given all the extra overhead of object creation I guess it's not all that surprising. Current CVS python, Twisted 1.0.4. Has anyone else done similar benchmarking and found different results? I'm not planning … [View More]

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