Minor performance optimization

libsession/src/main/java/org/session/libsession/snode/SnodeAPI.kt

@@ -34,7 +34,7 @@ object SnodeAPI {
     // Settings
     private val maxRetryCount = 6
     private val minimumSnodePoolCount = 12
-    private val minimumSwarmSnodeCount = 2
+    private val minimumSwarmSnodeCount = 3
     // Use port 4433 if the API level can handle the network security configuration and enforce pinned certificates
     private val seedNodePort = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) 443 else 4433
     private val seedNodePool by lazy {
@@ -44,7 +44,7 @@ object SnodeAPI {
             setOf( "https://storage.seed1.loki.network:$seedNodePort ", "https://storage.seed3.loki.network:$seedNodePort ", "https://public.loki.foundation:$seedNodePort" )
         }
     }
-    private val snodeFailureThreshold = 4
+    private val snodeFailureThreshold = 3
     private val targetSwarmSnodeCount = 2
     private val useOnionRequests = true
 
@@ -252,19 +252,20 @@ object SnodeAPI {
 
     private fun removeDuplicates(publicKey: String, rawMessages: List<*>): List<*> {
         val receivedMessageHashValues = database.getReceivedMessageHashValues(publicKey)?.toMutableSet() ?: mutableSetOf()
-        return rawMessages.filter { rawMessage ->
+        val result = rawMessages.filter { rawMessage ->
             val rawMessageAsJSON = rawMessage as? Map<*, *>
             val hashValue = rawMessageAsJSON?.get("hash") as? String
             if (hashValue != null) {
                 val isDuplicate = receivedMessageHashValues.contains(hashValue)
                 receivedMessageHashValues.add(hashValue)
-                database.setReceivedMessageHashValues(publicKey, receivedMessageHashValues)
                 !isDuplicate
             } else {
                 Log.d("Loki", "Missing hash value for message: ${rawMessage?.prettifiedDescription()}.")
                 false
             }
         }
+        database.setReceivedMessageHashValues(publicKey, receivedMessageHashValues)
+        return result
     }
 
     private fun parseEnvelopes(rawMessages: List<*>): List<SignalServiceProtos.Envelope> {
@@ -305,7 +306,7 @@ object SnodeAPI {
             }
         }
         when (statusCode) {
-            400, 500, 503 -> { // Usually indicates that the snode isn't up to date
+            400, 500, 502, 503 -> { // Usually indicates that the snode isn't up to date
                 handleBadSnode()
             }
             406 -> {