Has anyone come across ktor server using CIO hanging on requests? I can’t pin it down yet but I have...

# ktor

[David Smith]

Has anyone come across ktor server using CIO hanging on requests? I can’t pin it down yet but I have multiple requests hitting my server at once and it seems one of them at least is hanging, once it times out on the client side the other requests are handled fine. If I change to use the Netty engine then everything is fine

[Aleksei Tirman [JB]]

What version of Ktor do you use?

[David Smith]

2.0.2

[David Smith]

interestingly, with Netty for POST calls (using jackson) I am hitting https://youtrack.jetbrains.com/issue/KTOR-1286/Cannot-receive-content-via-jackson-negotiator-since-142

[David Smith]

The fix there works with netty but I still have the same issue with CIO.

[David Smith]

receivePipeline.intercept(ApplicationReceivePipeline.Before) {
            withContext(<http://Dispatchers.IO|Dispatchers.IO>) {
                proceed()
            }
        }

[David Smith]

s/fix/workaround