#twisted

still nothing

I guess PINGs it is

apparently leaving out a parameter in a method means it will silently not be called

hard to catch

Makes one really really miss the protections of an explicitly typed language

specing: If it makes you feel any better, no compiler can type-check the network.

they cannot, but they can catch trying to pass a method that mismatches in the number of parameters

And why are these "Unhandled error in Deferred:" errors always : followed by two newlines?

there is no help at all

And adding .addErrback just makes things not work at all heh

you should get stacktraces from unhandled errors, IIRC. In any case you should be attacking an errback to every Deferred

attaching. although attacking might not be wrong either ;)

also what *is* the status of PB? am I wrong that "other things" should be preferred?

I'm trying to, but apparently doing so has unintended consequences

that sounds very wrong; what is your errback receiving?

(most useful would be to pastebin your code)

e.g. [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionRefusedError'>: Connection was refused by other side: 111: Connection refused.]

that's an errback from a PB call?

very likely the one bound to dfr = factory.getRootObject()

But right now doing addErrback to another deferred object causes this call to block somehow, i.e. flow does not reach the code after it

can you pastebin your code? that shouldn't happen

Oh was using .AddErrback instead of .addErrback

(i.e. attaching an errback shouldn't cause blocking)

Another case of < specing> Makes one really really miss the protections of an explicitly typed language

unless maybe your errback is doing something weird?

its just a print error & reconnect

you can do type stuff in Python if you really want that pain

(e.g. see mypy)

Odd, there is no AddErrback in the API

but somehow it still works?

??

Or maybe the stacktrace is supressed

i.e. python does produce an error, but it is supressed by Twisted

i think PB rips out stacktraces of "local" errors it sends across the wire

but this is in stdout/stderr

from which side?

I should be getting full traces

from where I start the client

it's really hard to help w/o seeing the code

I can try making a minimal example

Tickets pending review: https://tm.tl/#8566, #8966 (the0id), #9100, #9101, #9118 (the0id), #4964 (jameshilliard), #9131, #5739, #9138, #9143, #6938, #9156

Tickets pending review: https://tm.tl/#8566, #8966 (the0id), #9100, #9101, #9118 (the0id), #4964 (jameshilliard), #9131, #5739, #9138, #9143, #6938, #9156

Tickets pending review: https://tm.tl/#8566, #8966 (the0id), #9100, #9101, #9118 (the0id), #4964 (jameshilliard), #9131, #5739, #9138, #9143, #6938, #9156

Lukasa submitted <https://tm.tl/#9157>; - AlreadyCalled error when timing out unresponsive HTTPS client. (unassigned) for review

can you stop ClientService from rescheduling a reconnect? or should i not use clientservice if i dont want a reconnect?

Tickets pending review: https://tm.tl/#8566, #8966 (the0id), #9100, #9101, #9118 (the0id), #4964 (jameshilliard), #9131, #5739, #9138, #9143, #6938, #9157, #9156

ch40s: I think if you stop the service (i.e. detach it from parent, and/or call .stopService()) then it won't reconnect any longer

hey, i haven't used twisted in a while, anyone want to help refresh my memory?

aotaointbin: Twisted is a networking library. It comes with its own pluggable event loop, thread pool, a bunch of useful protocols, and various useful utilities.

i have a long-running function A and a short-running function B, both running with task.LoopingCall.

but obviously B doesn't run while A is running. do i just insert yields into A or something?

ah, yes, @inlineCallbacks and yields, right?

Well, @inlineCallbacks isn't magic. You'll have to break your function up into parts; @inlineCallbacks does that for you, sort of, with a slight cost.

right, i don't mind dropping a yield in front of any blocking io calls...

ah, wait, no, that's wrong too... everything needs to return a deferred...

If you have blocking calls, then you either need to kick those out to the threadpool with .deferToThread() or you need to rewrite them to use Twisted's event-handling and not block.

not my blocking functions, will need to deferToThread :(

so there's nothing like LoopingCallInThread? :P

hi

how to transfer files using twisted?

jamesaxl: magic-wormhole has a Python API that is pretty decent.

aotaointbin: No, and also all the normal caveats of threaded programming apply, so you probably *don't* want to do that much work in a thread.

simpson: thank a lot

very limited shared state, not worried about race conditions.

Tickets pending review: https://tm.tl/#8566, #8966 (the0id), #9100, #9101, #9118 (the0id), #4964 (jameshilliard), #9131, #5739, #9138, #9143, #6938, #9157, #9156

sweet, got it working, thanks!