fix deprecated/experimental warn

build.gradle.kts

@@ -37,6 +37,7 @@ version = "0.2.2-SNAPSHOT+" + try {
 extra.set("archivesBaseName", "VIAaaS")
 
 repositories {
+    //mavenLocal()
     mavenCentral()
     maven("https://oss.sonatype.org/content/repositories/snapshots")
     maven("https://repo.viaversion.com/")

src/main/kotlin/com/viaversion/aas/Util.kt

@@ -72,6 +72,7 @@ fun mcCfb8(key: ByteArray, mode: Int): Cipher {
 }
 
 // https://github.com/VelocityPowered/Velocity/blob/6467335f74a7d1617512a55cc9acef5e109b51ac/api/src/main/java/com/velocitypowered/api/util/UuidUtils.java
+@OptIn(ExperimentalUnsignedTypes::class)
 fun parseUndashedId(string: String): UUID {
     Preconditions.checkArgument(string.length == 32, "Length is incorrect")
     return UUID(

src/main/kotlin/com/viaversion/aas/handler/state/HandshakeState.kt

@@ -42,7 +42,7 @@ class HandshakeState : MinecraftConnectionState {
             throw StacklessException("Rate-limited")
         }
         val virtualPort = packet.port
-        val extraData = packet.address.substringAfter(0.toChar(), missingDelimiterValue = "") // todo
+        val extraData = packet.address.substringAfter(0.toChar(), missingDelimiterValue = "").ifEmpty { null } // todo
         val virtualHostNoExtra = packet.address.substringBefore(0.toChar())
 
         val parsed = VIAaaSConfig.hostName.map {

src/main/kotlin/com/viaversion/aas/provider/AspirinVersionProvider.kt

@@ -8,6 +8,6 @@ object AspirinVersionProvider : BaseVersionProvider() {
     override fun getClosestServerProtocol(connection: UserConnection): Int {
         val ver = connection.channel!!.pipeline().get(MinecraftHandler::class.java).data.viaBackServerVer
         if (ver != null) return ver
-        return super.getServerProtocol(connection)
+        return super.getClosestServerProtocol(connection)
     }
 }