In case empty selector in SubscribeNative we should use default dynamic merged head - also valid for anyLabelSelector (#173)

src/main/kotlin/io/emeraldpay/dshackle/upstream/Selector.kt

@@ -28,10 +28,13 @@ class Selector {
         @JvmStatic
         val empty = EmptyMatcher()
 
+        @JvmStatic
+        val anyLabel = AnyLabelMatcher()
+
         @JvmStatic
         fun convertToMatcher(req: BlockchainOuterClass.Selector?): LabelSelectorMatcher {
             return when {
-                req == null -> AnyLabelMatcher()
+                req == null -> anyLabel
                 req.hasLabelSelector() -> req.labelSelector.let { selector ->
                     if (StringUtils.isNotEmpty(selector.name)) {
                         val values = selector.valueList
@@ -43,7 +46,7 @@ class Selector {
                             LabelMatcher(selector.name, selector.valueList)
                         }
                     } else {
-                        AnyLabelMatcher()
+                        anyLabel
                     }
                 }
                 req.hasAndSelector() -> AndMatcher(
@@ -66,7 +69,7 @@ class Selector {
                 )
                 req.hasNotSelector() -> NotMatcher(convertToMatcher(req.notSelector.selector))
                 req.hasExistsSelector() -> ExistsMatcher(req.existsSelector.name)
-                else -> AnyLabelMatcher()
+                else -> anyLabel
             }
         }
 

src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum_pos/EthereumPosMultiStream.kt

@@ -158,7 +158,7 @@ open class EthereumPosMultiStream(
     }
 
     override fun getHead(mather: Selector.Matcher): Head =
-        if (mather == Selector.empty) {
+        if (mather == Selector.empty || mather == Selector.anyLabel) {
             head
         } else {
             filteredHeads.computeIfAbsent(mather.describeInternal().intern()) { _ ->