various things

build.gradle

@@ -7,17 +7,20 @@ group 'com.velocitypowered'
 version '1.0-SNAPSHOT'
 
 sourceCompatibility = 1.8
+targetCompatibility = 1.8
 
 repositories {
+    mavenLocal()
     mavenCentral()
 }
 
 dependencies {
-    compile 'io.netty:netty-handler:4.1.27.Final'
+    compile 'com.google.code.gson:gson:2.8.5'
+    compile 'com.google.guava:guava:25.1-jre'
     compile 'io.netty:netty-codec:4.1.27.Final'
     compile 'io.netty:netty-codec-http:4.1.27.Final'
-    compile 'com.google.guava:guava:25.1-jre'
+    compile 'io.netty:netty-handler:4.1.27.Final'
-    compile 'com.google.code.gson:gson:2.8.5'
     compile 'net.kyori:text:1.12-1.5.0'
-    testCompile group: 'junit', name: 'junit', version: '4.12'
+    testCompile 'org.junit.jupiter:junit-jupiter-api:5.3.0-M1'
+    testCompile 'org.junit.jupiter:junit-jupiter-engine:5.3.0-M1'
 }

settings.gradle

@@ -1,2 +1 @@
 rootProject.name = 'velocity'
-

src/main/java/com/velocitypowered/proxy/Velocity.java

@@ -5,9 +5,6 @@ public class Velocity {
         VelocityServer server = new VelocityServer();
         server.initialize();
 
-        while (true) {
+        Thread.currentThread().join();
-            // temporary until jline is added.
-            Thread.sleep(999999);
-        }
     }
 }

src/main/java/com/velocitypowered/proxy/protocol/StateRegistry.java

@@ -1,6 +1,8 @@
 package com.velocitypowered.proxy.protocol;
 
 import com.velocitypowered.proxy.protocol.packets.*;
+import io.netty.util.collection.IntObjectHashMap;
+import io.netty.util.collection.IntObjectMap;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -49,7 +51,7 @@ public enum StateRegistry {
     public static class ProtocolMappings {
         private final ProtocolConstants.Direction direction;
         private final StateRegistry state;
-        private final Map<Integer, Supplier<? extends MinecraftPacket>> idsToSuppliers = new HashMap<>();
+        private final IntObjectMap<Supplier<? extends MinecraftPacket>> idsToSuppliers = new IntObjectHashMap<>();
         private final Map<Class<? extends MinecraftPacket>, Integer> packetClassesToIds = new HashMap<>();
 
         public ProtocolMappings(ProtocolConstants.Direction direction, StateRegistry state) {

src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftPipelineUtils.java

@@ -6,22 +6,32 @@ import io.netty.handler.timeout.ReadTimeoutHandler;
 
 import java.util.concurrent.TimeUnit;
 
-public class MinecraftPipelineUtils {
+public interface MinecraftPipelineUtils {
-    public static void strapPipelineForProxy(Channel ch) {
+    String FRAME_DECODER = "frame-decoder";
-        ch.pipeline().addLast("read-timeout", new ReadTimeoutHandler(30, TimeUnit.SECONDS));
+    String FRAME_ENCODER = "frame-encoder";
-        ch.pipeline().addLast("legacy-ping-decode", new LegacyPingDecoder());
+    String LEGACY_PING_DECODER = "legacy-ping-decoder";
-        ch.pipeline().addLast("frame-decoder", new MinecraftVarintFrameDecoder());
+    String LEGACY_PING_ENCODER = "legacy-ping-encoder";
-        ch.pipeline().addLast("legacy-ping-encode", LegacyPingEncoder.INSTANCE);
+    String MINECRAFT_DECODER = "minecraft-decoder";
-        ch.pipeline().addLast("frame-encoder", MinecraftVarintLengthEncoder.INSTANCE);
+    String MINECRAFT_ENCODER = "minecraft-encoder";
-        ch.pipeline().addLast("minecraft-decoder", new MinecraftDecoder(ProtocolConstants.Direction.TO_SERVER));
+    String READ_TIMEOUT = "read-timeout";
-        ch.pipeline().addLast("minecraft-encoder", new MinecraftEncoder(ProtocolConstants.Direction.TO_CLIENT));
+
+    static void strapPipelineForProxy(Channel ch) {
+        ch.pipeline()
+          .addLast(READ_TIMEOUT, new ReadTimeoutHandler(30, TimeUnit.SECONDS))
+          .addLast(LEGACY_PING_DECODER, new LegacyPingDecoder())
+          .addLast(FRAME_DECODER, new MinecraftVarintFrameDecoder())
+          .addLast(LEGACY_PING_ENCODER, LegacyPingEncoder.INSTANCE)
+          .addLast(FRAME_ENCODER, MinecraftVarintLengthEncoder.INSTANCE)
+          .addLast(MINECRAFT_DECODER, new MinecraftDecoder(ProtocolConstants.Direction.TO_SERVER))
+          .addLast(MINECRAFT_ENCODER, new MinecraftEncoder(ProtocolConstants.Direction.TO_CLIENT));
     }
 
-    public static void strapPipelineForBackend(Channel ch) {
+    static void strapPipelineForBackend(Channel ch) {
-        ch.pipeline().addLast("read-timeout", new ReadTimeoutHandler(30, TimeUnit.SECONDS));
+        ch.pipeline()
-        ch.pipeline().addLast("frame-decoder", new MinecraftVarintFrameDecoder());
+          .addLast(READ_TIMEOUT, new ReadTimeoutHandler(30, TimeUnit.SECONDS))
-        ch.pipeline().addLast("frame-encoder", MinecraftVarintLengthEncoder.INSTANCE);
+          .addLast(FRAME_DECODER, new MinecraftVarintFrameDecoder())
-        ch.pipeline().addLast("minecraft-decoder", new MinecraftDecoder(ProtocolConstants.Direction.TO_CLIENT));
+          .addLast(FRAME_ENCODER, MinecraftVarintLengthEncoder.INSTANCE)
-        ch.pipeline().addLast("minecraft-encoder", new MinecraftEncoder(ProtocolConstants.Direction.TO_SERVER));
+          .addLast(MINECRAFT_DECODER, new MinecraftDecoder(ProtocolConstants.Direction.TO_CLIENT))
+          .addLast(MINECRAFT_ENCODER, new MinecraftEncoder(ProtocolConstants.Direction.TO_SERVER));
     }
 }

src/main/java/com/velocitypowered/proxy/util/UuidUtils.java

@@ -3,20 +3,18 @@ package com.velocitypowered.proxy.util;
 import com.google.common.base.Preconditions;
 
 import java.nio.charset.StandardCharsets;
+import java.util.Objects;
 import java.util.UUID;
 
 public enum UuidUtils {
     ;
 
-    public static UUID fromMojang(String id) {
+    public static UUID fromUndashed(final String string) {
-        Preconditions.checkNotNull(id, "id");
+        Objects.requireNonNull(string, "string");
-        Preconditions.checkArgument(id.length() == 32, "Length is incorrect");
+        Preconditions.checkArgument(string.length() == 32, "Length is incorrect");
-        return UUID.fromString(
+        return new UUID(
-                id.substring(0, 8) + "-" +
+            Long.parseUnsignedLong(string.substring(0, 16), 16),
-                        id.substring(8, 12) + "-" +
+            Long.parseUnsignedLong(string.substring(16), 16)
-                        id.substring(12, 16) + "-" +
-                        id.substring(16, 20) + "-" +
-                        id.substring(20, 32)
         );
     }
 

src/test/java/com/velocitypowered/proxy/util/EncryptionUtilsTest.java

@@ -1,19 +1,20 @@
 package com.velocitypowered.proxy.util;
 
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 
-public class EncryptionUtilsTest {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class EncryptionUtilsTest {
     @Test
-    public void twoComplementsSha1Digest() throws Exception {
+    void twoComplementsSha1Digest() throws Exception {
         String notchHash = hexDigest("Notch");
-        Assert.assertEquals("4ed1f46bbe04bc756bcb17c0c7ce3e4632f06a48", notchHash);
+        assertEquals("4ed1f46bbe04bc756bcb17c0c7ce3e4632f06a48", notchHash);
 
         String jebHash = hexDigest("jeb_");
-        Assert.assertEquals("-7c9d5b0044c130109a5d7b5fb5c317c02b4e28c1", jebHash);
+        assertEquals("-7c9d5b0044c130109a5d7b5fb5c317c02b4e28c1", jebHash);
     }
 
     private String hexDigest(String str) throws Exception {

src/test/java/com/velocitypowered/proxy/util/UuidUtilsTest.java

@@ -1,26 +1,25 @@
 package com.velocitypowered.proxy.util;
 
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 import java.util.UUID;
 
-import static org.junit.Assert.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class UuidUtilsTest {
+class UuidUtilsTest {
-    private static final UUID VALID_UUID = UUID.fromString("6b501978-d3be-4f33-bcf6-6e7808f37a0d");
+    private static final UUID EXPECTED_DASHED_UUID = UUID.fromString("6b501978-d3be-4f33-bcf6-6e7808f37a0d");
-    private static final String VALID_MOJANG_UUID = "6b501978d3be4f33bcf66e7808f37a0d";
+    private static final String ACTUAL_UNDASHED_UUID = EXPECTED_DASHED_UUID.toString().replace("-", "");
 
     private static final UUID TEST_OFFLINE_PLAYER_UUID = UUID.fromString("708f6260-183d-3912-bbde-5e279a5e739a");
     private static final String TEST_OFFLINE_PLAYER = "tuxed";
 
     @Test
-    public void fromMojang() {
+    void testFromUndashed() {
-        Assert.assertEquals("UUIDs do not match", VALID_UUID, UuidUtils.fromMojang(VALID_MOJANG_UUID));
+        assertEquals(EXPECTED_DASHED_UUID, UuidUtils.fromUndashed(ACTUAL_UNDASHED_UUID), "UUIDs do not match");
     }
 
     @Test
-    public void generateOfflinePlayerUuid() {
+    void generateOfflinePlayerUuid() {
-        Assert.assertEquals("UUIDs do not match", TEST_OFFLINE_PLAYER_UUID, UuidUtils.generateOfflinePlayerUuid(TEST_OFFLINE_PLAYER));
+        assertEquals(TEST_OFFLINE_PLAYER_UUID, UuidUtils.generateOfflinePlayerUuid(TEST_OFFLINE_PLAYER), "UUIDs do not match");
     }
 }