twisted

问题 I am making an iPhone application that communicates to a Twisted socket and it works great when I have one message to send. However, my issue is I need to send many different bits of information to the app. Here is my code. if numrows == 1: #Did login msg = "%s: Login Credentials Success" % _UDID print msg for c in self.factory.clients: c.message(msg) time.sleep(0.5) for result in results: for i in range(1, 6): msg = "%s:L%d;%s" % (_UDID, i, result[i]) print msg for c in self.factory.clients:

问题 I have a Twisted project which seeks to essentially rebroadcast collected data over TCP in JSON. I essentially have a USB library which I need to subscribe to and synchronously read in a while loop indefinitely like so: while True: for line in usbDevice.streamData(): data = MyBrandSpankingNewUSBDeviceData(line) # parse the data, convert to JSON output = convertDataToJSON(data) # broadcast the data ... The problem, of course, is the ... . Essentially, I need to start this process as soon as

问题 I have a list of strings and I want to process the strings in a periodic manner. The period of starting processing a new string is 1 second, and it takes 3 seconds to process a string. What I expect to observe is that from the 3rd second on, I will see a new result every second until all the strings are processed. However, what I actually saw was that all the results showed up together when all of them are generated. So the question is, how to modify the code to achieve what I expect to see?

问题 I have an application which needs to poll a database for possible configuration changes. The application is a simple xmlrpc server using Twisted. I have experimented using Twisted's LoopingCall to perform the polling, but because LoopingCall runs on the main thread, the call to the db is blocking. So if the db call is slow for some reason, requests to the xmlrpc server have to wait. So I tried running the LoopingCall in a thread and couldn't really get it to work. My question is, should I run

问题 In a previous question of mine I got this answer: Subclass twisted.conch.recvline.HistoricRecvLine instead of twisted.protocols.basic.LineReceiver . keystrokeReceived is one of the several additional protocol callbacks available when you are using a terminal instead of a TCP connection. – Jean-Paul Calderone But what if what to have both terminal and TCP Connection? When I subclass HistoricRecvLine I lose the functionality of the TCP connection? So let's start it from the beginning. My .py

问题 I need a reliable way to check if a Twisted-based server, started via twistd (and a TAC-file), was started successfully. It may fail because some network options are setup wrong. Since I cannot access the twistd log (as it is logged to /dev/null, because I don't need the log-clutter twistd produces), I need to find out if the Server was started successfully within a launch-script which wraps the twistd-call. The launch-script is a Bash script like this: #!/usr/bin/bash twistd \ --pidfile

问题 I've written an IRC bot using Twisted and now I've gotten to the point where I want to be able to dynamically reload functionality. In my main program, I do from bots.google import GoogleBot and I've looked at how to use reload to reload modules , but I still can't figure out how to do dynamic re-importing of classes. So, given a Python class , how do I dynamically reload the class definition? 回答1: Reload is unreliable and has many corner cases where it may fail. It is suitable for reloading

问题 Twisted does support TCP Keepalive. But I can't find a simple way to set those on endpoints (client and server). What is the best current practice for doing this? 回答1: I can't see a way that you can achieve this from endpoints cleanly via the API. However take a look at the source to twisted.internet.endpoints._WrappingProtocol - you could possibly set your endpoint to use a _WrappingFactory * which callbacks a deferred when the connection is made. At this point transport is set on the

问题 I need to pull from hundreds of pop3 email accounts, and i want to build a robust server to do this. Would twisted be a good choice for this type of project? Right now a simple prototype would be to pull from a single pop3 account, then it would pull from many but it would be a serialized process. I want to create a server that has multiple threads so it can do things at the same time. 回答1: Twisted is an event-driven networking framework written in Python. It builds heavily on asynchronous

问题 Python newbie here. I'm writing an SMTP server using Twisted and twisted.mail.smtp. I'd like to log incoming connections and possibly dump them when there are too many concurrent connections. Basically, I want ConsoleMessageDelivery.connectionMade() method to be called in the following, when a new connection is made: class ConsoleMessageDelivery: implements(smtp.IMessageDelivery) def connectionMade(self): # This never gets called def receivedHeader(self, helo, origin, recipients): myHostname,