BackendConfig
constructor(schemaVersion: Int, serverId: String, proxySecret: String, previousProxySecret: String?, proxyConnectHost: String, proxyConnectPort: Int, messagingHost: String, messagingPort: Int, messagingEnabled: Boolean, controlSenderId: String, controlMaxPayload: Int, controlReplayWindowMillis: Long, controlReplayMaxEntries: Int, controlMaxSkewMillis: Long, controlTtlMillis: Long, controlMaxInflight: Int = 256, controlExpectedSenderId: String = "proxy", requireAuthenticatedMode: Boolean, enforceProxy: Boolean, referralSourceHost: String, referralSourcePort: Int, replayWindowMillis: Long, replayMaxEntries: Int)