Hi, after reading through the logic of `Session` p...

# ktor

[Hong Phuc]

Hi, after reading through the logic of Session plugin, I saw that the providerData will not be empty if a session provider is configured, meaning the client doesn't need to have a session cookies or session header to trigger the "Session found for" log when the client hit an endpoint. Is this the intended design or a bug? If there is any ktor dev in the channel may you guys have a look? Thanks in advance.

public val Sessions: RouteScopedPlugin<SessionsConfig> = createRouteScopedPlugin("Sessions", ::SessionsConfig) {
    val providers = pluginConfig.providers.toList()

    application.attributes.put(SessionProvidersKey, providers)

    onCall { call ->
        // For each call, call each provider and retrieve session data if needed.
        // Capture data in the attribute's value
        val providerData = providers.associateBy({ it.name }) {
            it.receiveSessionData(call)
        }

        if (providerData.isEmpty()) {
            LOGGER.trace("No sessions found for ${call.request.uri}")
        } else {
            val sessions = providerData.keys.joinToString()
            LOGGER.trace("Sessions found for ${call.request.uri}: $sessions")
        }
        val sessionData = SessionData(providerData)
        call.attributes.put(SessionDataKey, sessionData)
    }

[Aleksei Tirman [JB]]

Thank you. I've commented on https://youtrack.jetbrains.com/issue/KTOR-7922.