twisted

Autobahn with sendMessage using threading and twisted

由 99封情书 提交于 2019-12-24 04:49:08
问题 From this thread (sendMessage from outside in autobahn running in separate thread) I am trying to get the code below working. But I am getting the following error: File "/usr/local/lib/python2.7/dist-packages/autobahn/websocket/protocol.py", line 2421, in sendMessage assert(type(payload) == bytes) exceptions.AssertionError: Can anybody tell me where I am going wrong? from autobahn.twisted.websocket import WebSocketServerProtocol, WebSocketServerFactory import threading from twisted.python

How to Handle POST requests in Twisted

由 房东的猫 提交于 2019-12-24 00:36:21
问题 I have a very simple twisted script where you can handle POST requests: class FormPage(Resource): isLeaf = True def render_GET(self, request): return b"""<html><body><form method="POST"><input name="form-field" type="text" /></form></body></html>""" def render_POST(self, request): return '<html><body>You submitted: %s</body></html>' % (cgi.escape(request.args["form-field"][0]),) factory = Site(FormPage()) reactor.listenTCP(80, factory) reactor.run() But whenever I run this and fill out the

Uhandled error in pysnmp twisted client with more than 1000 hosts

由 老子叫甜甜 提交于 2019-12-24 00:00:38
问题 I have this code: from twisted.internet import reactor from twisted.internet import defer, task from pysnmp.entity import engine, config from pysnmp.carrier.twisted import dispatch from pysnmp.carrier.twisted.dgram import udp from pysnmp.entity.rfc3413.twisted import cmdgen import __webimport__ import tools.config from tools.database import makedsn import psycopg2 def cmp_varBinds(varBind, varName): if varName[0] in str(varBind[0]): return True def cbFun(cbCtx, ip, varNames): (errorIndication

Can reactor.connectTCP occur after reactor.run in twisted python?

由 一笑奈何 提交于 2019-12-23 17:18:33
问题 I wish to add more protocols and factories after reactor runs. I couldn't find documentation which says this is allowed. When I make reactor.run before reactor.connectTCP, the program hangs around buildProtocol in factory. Is it possible to add reactor.connectTCP to the reactor after reactor.run? 回答1: Yes, you can start or stop listening on a TCP port at any time in Twisted. However, code like reactor.run() reactor.listenTCP(...) won't work because run() only returns when the reactor has been

Python Twisted Client Connection Lost

由 99封情书 提交于 2019-12-23 15:17:13
问题 I have this twisted client, which connects with a twisted server having an index. I ran this client from command-line. It worked fine. Now I modified it to run in loop (see main() ) so that I can keep querying. But the client runs only once. Next time it simply says connection lost \n Connection lost - goodbye! . What am i doing wrong? In the loop I am reconnecting to the server, it that wrong? from twisted.internet import reactor from twisted.internet import protocol from settings import AS

twisted dns doesn't work

由 女生的网名这么多〃 提交于 2019-12-23 14:53:28
问题 I'd like to know why the following doesn't work. from twisted internet import defer, reactor from twisted.python.failure import Failure import twisted.names.client def do_lookup(do_lookup): d = twisted.names.client.getHostByName(domain) d.addBoth(lookup_done) def lookup_done(result): print 'result:', result reactor.stop() domain = 'twistedmatrix.com' reactor.callLater(0, do_lookup, domain) reactor.run() Results in: result: [Failure instance: Traceback (failure with no frames): <class 'twisted

twisted dns doesn't work

由 夙愿已清 提交于 2019-12-23 14:52:11
问题 I'd like to know why the following doesn't work. from twisted internet import defer, reactor from twisted.python.failure import Failure import twisted.names.client def do_lookup(do_lookup): d = twisted.names.client.getHostByName(domain) d.addBoth(lookup_done) def lookup_done(result): print 'result:', result reactor.stop() domain = 'twistedmatrix.com' reactor.callLater(0, do_lookup, domain) reactor.run() Results in: result: [Failure instance: Traceback (failure with no frames): <class 'twisted

Autobahn websocket issue while running with twistd using tac file

由 穿精又带淫゛_ 提交于 2019-12-23 13:11:42
问题 I have a WebSocket server implemented using autobahn WebSocket framework using twisted. WebSocket server runs fine when the program ran with python. But if I run this using twistd server runner by creating tac file as twisted service, I get the following error in server while any client try to establish connection and the handshake is failing. 2015-12-08 07:17:56,022 - CRITICAL - twisted.publishToNewObserver() 154 Unhandled Error Traceback (most recent call last): File "/opt/nrgi-ws/nrgi-ws

How non blocking read/write throught remote FileSystem

由 末鹿安然 提交于 2019-12-23 10:48:34
问题 Is there a way to write and read files on a remote filesystem (such as NFS, SSHFS, or sambafs) in a way that read or write or even open return immediately with an error code? In fact I'm using Twisted and I want to know whether there is a safe way to access remote files without blocking my reactor. 回答1: In Twisted, for remote filesystems just like for any other blocking calls, you can use threads.deferToThread -- a reasonably elegant way to deal with pesky blocking syscalls!-) 回答2: This is

Python Twisted and database connections

由 蹲街弑〆低调 提交于 2019-12-23 10:19:55
问题 Our projects at work include synchronous applications (short lived) and asynchronous Twisted applications (long lived). We're re-factoring our database and are going to build an API module to decouple all of the SQL in that module. I'd like to create that API so both synchronous and asynchronous applications can use it. For the synchronous applications I'd like calls to the database API to just return data (blocking) just like using MySQLdb, but for the asynchronous applications I'd like
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