Mailman 3 February 2017 - Twisted

[Twisted-Python] "twistd" in Twisted 16.4.0 can't import modules/packages from current working directory
by Yuri 14 Feb '17

14 Feb '17

Hi all I couldn't find Twisted-specific group, so posting here. Recently Twisted 16.4.0 got released. Yesterday I've tried to upgrade it for my apps and got an error. I've created simple example, which demonstrates it. File service.tac: ======================================= import os from twisted.application import service, internet import mymodule application = service.Application("Demo application") ---------------------------------------- File mymodule.py: ======================================== def myfunction(asd): """ Stub function """ ---------------------------------------- If you try to run it with twistd -y service.tac you'll get an error: == output ============================== Unhandled Error Traceback (most recent call last): File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 648, in run runApp(config) File "/usr/local/lib/python2.7/site-packages/twisted/scripts/twistd.py", line 25, in runApp _SomeApplicationRunner(config).run() File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 379, in run self.application = self.createOrGetApplication() File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 444, in createOrGetApplication application = getApplication(self.config, passphrase) --- <exception caught here> --- File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 455, in getApplication application = service.loadApplication(filename, style, passphrase) File "/usr/local/lib/python2.7/site-packages/twisted/application/service.py", line 411, in loadApplication passphrase) File "/usr/local/lib/python2.7/site-packages/twisted/persisted/sob.py", line 223, in loadValueFromFile eval(codeObj, d, d) File "service.tac", line 7, in <module> import mymodule exceptions.ImportError: No module named mymodule Failed to load application: No module named mymodule ---------------------------------------- The errors comes down to this: twistd script does not add current working directory to python path (or removes it, I don't know what exactly happens), so it fails to import any packages/modules from it. The issue does not appear in previous version (Twisted 16.3.2). Any ideas what caused it?

6 14

[Twisted-Python] deprecate using paths with trial
by Jean-Paul Calderone 14 Feb '17

14 Feb '17

Hello, Since trial has stopped adding the working directory to sys.path, it seems very sensible to also stop accepting paths as a way to specify what tests to run. Instead, only package, module, class, or test method names should be accepted. Please add your thoughts (reasoned arguments, not +1s and -1s) to this ticket: https://twistedmatrix.com/trac/ticket/9035 Thanks, Jean-Paul

2 1

[Twisted-Python] 主动式营销成外贸企业新蓝海
by Sunsesoft.Du 13 Feb '17

13 Feb '17

1 0

[Twisted-Python] SMTP: Authenticating on Outbound emails only
by Anthony Lukach 12 Feb '17

12 Feb '17

I am working on putting together an SMTP server implemented within Twisted. This will act as a conduit to my API, where there are two basic flows: 1) A device that supports sending email can "send" an email through the SMTP server. This is, in effect, the SMTP server handling the message as an outbound request. The device would authenticate with the server and then provide it the message to be sent (which in reality will be uploaded to my API). 2) A device can send an email to my SMTP server via their own SMTP server. My server would receive the incoming message, parse its contents, and then upload the data to my API. Naturally, these incoming messages would not be required to authenticate with the server. I'm having trouble constructing the server in a way that outbound messages require authentication but incoming messages do not. My service currently looks more or less like below: from twisted.cred.portal import Portal from twisted.mail import smtpfrom twisted.mail.imap4 import LOGINCredentials, PLAINCredentialsclass SMTPFactory(smtp.SMTPFactory): protocol = smtp.ESMTP def buildProtocol(self, addr): # Add authentication to SMTP server p = smtp.SMTPFactory.buildProtocol(self, addr) p.challengers = { "LOGIN": LOGINCredentials, "PLAIN": PLAINCredentials } # Set a timeout for the connection message to be processed p.timeout = 200 return p provider = Provider('localhost', settings) # Multiple checkers that for backwards compatibilitycascade = CascadeChecker()cascade.registerChecker(FilePasswordDB(pw_file)) # ... some other checks portal = Portal(SimpleRealm(options, provider)) portal.registerChecker(cascade) internet.TCPServer(2500, SMTPFactory(portal )) The problem is that, as currently written, I need to authenticate with the server upon connection. Naturally, this doesn't make sense for the inbound emails. It seems that a common pattern is to analyze the "to" address of the emails and to allow any incoming emails (without authentication) that have a matching domain, however this seems difficult to configure with Twisted as I don't have the context of the email at the time the authentication check is done. Can anyone direct me to an example of an SMTP server that is both accepting inbound and outbound emails and authenticates only on outbound emails? PS, I'm not super familiar with the inner workings of email or the SMTP protocol, please let me know if I'm heading in the wrong direction Best, Anthony

2 2

[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 12 Feb '17

12 Feb '17

1 0

[Twisted-Python] 您的产品那么好，国外的客户是否知道呢？准确投递到客户手上，请联系
by Sunsesoft.Du 09 Feb '17

09 Feb '17

1 0

[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 05 Feb '17

05 Feb '17

1 0