^ :thread-please:

# ktor

[Deactivated User]

^ 🧵

[Deactivated User]

do you have a small snippet reproducing the problem?

[vincent.brule]

I have only a test route with val session = call.mySession as you said to do and I have the error When I tried to access this route with bad header and after the server crash

[vincent.brule]

If you want I can give you the exception ?

[Deactivated User]

Is it ktor 0.9.2, with netty?

[Deactivated User]

how are you installing the sessions feature?

[Deactivated User]

(the configuration I mean)

[vincent.brule]

Yes it 0.9.2 with netty

[vincent.brule]

Like this : install(Sessions) {
header<AnniaSession>(
“ANNIA_SESSION”,
directorySessionStorage(File(“.sessions”), cached = true)
)
}

[Deactivated User]

to seer which storage

[Deactivated User]

that meanas that the session has been deleted

[vincent.brule]

But is it normal that the server crash ?

[Deactivated User]

well it doesn’t crash, only throws an exception for that route

[vincent.brule]

Ok so I need to try and catch all the call.mySession ?

[Deactivated User]

I guess it fails before entering the route

[Deactivated User]

let me check

[vincent.brule]

Ok thanks

[Deactivated User]

looks like a problem to me, please report it here: https://github.com/ktorio/ktor/issues and we will fix as soon as possible

[Deactivated User]

in the meantime you can grab ktor source code locally,

wrap these lines around a try-catch `NoSuchElementException`:
https://github.com/ktorio/ktor/blob/0a45746af0db0457a6e1e988c27d9364cf064962/ktor-server/ktor-server-core/src/io/ktor/sessions/Sessions.kt#L30-L36

./gradlew install

And use 0.9.2-SNAPSHOT

[vincent.brule]

Thanks, just what is the difference between 0.9.2 and 0.9.2-SNAPSHOT please ?

[Deactivated User]

For unexistant sessions that are not available, would be like if no session was provided and you can do whatever you need in your route handler

[Deactivated User]

-SNAPSHOT is not published

[Deactivated User]

if you install the code from master right now

[Deactivated User]

https://github.com/ktorio/ktor/blob/master/gradle.properties#L1

[Deactivated User]

the version would be 0.9.2-SNAPSHOT

[Deactivated User]

that’s why if you apply a fix locally you have to reference to 0.9.2-SNAPSHOT

[vincent.brule]

Ok thank for your help

[Deactivated User]

and include repositories { mavenLocal() } in your build.gradle before any other maven repo, so it gets your local installed version

[vincent.brule]

https://github.com/ktorio/ktor/issues/445

[Deactivated User]

Ok I have checked this

[Deactivated User]

it displays a DEBUG message with the error

[Deactivated User]

but executes the handler

[Deactivated User]

and when calling call.sessions.get<MySession>() it returns null