Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[Solved] EventSessionUpnp::Run unexpected execution
31-12-2016, 04:56 PM (This post was last modified: 06-01-2017 07:03 PM by ChriD.)
Post: #1
[Solved] EventSessionUpnp::Run unexpected execution
Hi,
I get following exception sometimes

Code:
Unhandled exception AssertionFailed at OpenHome/Net/ControlPoint/Upnp/EventUpnp.cpp:182 in thread EventSession 2

AssertHandlerDefault
OpenHome::CallAssertHandler
OpenHome::Net::EventSessionUpnp::Run
OpenHome::SocketTcpSession::Start
OpenHome::MemberTranslator<OpenHome::SocketTcpSession,void (__thiscall OpenHome::SocketTcpSession::*)(void)>::Thunk
OpenHome::Functor::operator()
OpenHome::ThreadFunctor::Run
OpenHome::Thread::EntryPoint
threadEntrypoint
BaseThreadInitThunk
RtlSubscribeWnfStateChangeNotification
RtlSubscribeWnfStateChangeNotification
RtlSubscribeWnfStateChangeNotification

What may be the problem here?
Find all posts by this user
04-01-2017, 09:25 AM
Post: #2
RE: EventSessionUpnp::Run unexpected execution
Callbacks that run when a property changes are not allowed to throw. This assertion fails if one of them does throw.

The immediate fix would be to review all of your code, adding try...catch blocks as appropriate. I can see this'll be a bit of a pain to maintain. Later, I'll change ohNet to silently consume any exceptions instead.
Find all posts by this user
05-01-2017, 01:31 PM
Post: #3
RE: EventSessionUpnp::Run unexpected execution
Ok, Thanks! I'll check this.
I thought i have added try catch blocks in every callback. I may have forgotten one
Find all posts by this user
06-01-2017, 07:03 PM
Post: #4
RE: EventSessionUpnp::Run unexpected execution
I've digged a little deeper and i found out that it happens sometimes on a renderer on the "AVTRansport" "LastChanged" event

And the throw comes from the Os/Windows/SignalHandlers.cpp on line 19
(EXCEPTION_ACCESS_VIOLATION)

So in fact the problem was that i used an undefined pointer in some case (shame on me) and therfore the callback crashed
Find all posts by this user


Forum Jump: