draft

.gitignore

@@ -0,0 +1,5 @@
+gradle
+.idea
+.gradle
+build
+config

README.md

@@ -0,0 +1,5 @@
+VIAaaS
+---
+Note: this isn't working yet, and I don't know if this will be continued.
+Idea: server.example.com.25565.v1_12_2.viaaas.example.com (default 25565 port and version default as auto)
+TODO: What to do with online mode?

build.gradle.kts

@@ -0,0 +1,32 @@
+plugins {
+    application
+    kotlin("jvm") version "1.3.72"
+}
+
+application {
+    mainClassName = "com.github.creeper123123321.viaaas.ViaaaSKt"
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
+
+group = "com.github.creeper123123321.viaaas"
+version = "0.0.1-SNAPSHOT"
+extra.set("archivesBaseName", "VIAaaS")
+
+repositories {
+    mavenCentral()
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+    maven("https://repo.viaversion.com/")
+}
+
+dependencies {
+    implementation("us.myles:viaversion:3.1.0")
+    implementation("io.netty:netty-all:4.1.51.Final")
+    implementation(kotlin("stdlib-jdk8"))
+}
+
+val run: JavaExec by tasks
+run.standardInput = System.`in`

gradlew

@@ -0,0 +1,183 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,100 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

src/main/kotlin/com/github/creeper123123321/viaaas/CloudCodec.kt

@@ -0,0 +1,108 @@
+package com.github.creeper123123321.viaaas
+
+import io.netty.buffer.ByteBuf
+import io.netty.channel.Channel
+import io.netty.channel.ChannelHandler
+import io.netty.channel.ChannelHandlerContext
+import io.netty.channel.ChannelInitializer
+import io.netty.handler.codec.MessageToMessageDecoder
+import io.netty.handler.codec.MessageToMessageEncoder
+import io.netty.handler.codec.ReplayingDecoder
+import io.netty.handler.timeout.ReadTimeoutHandler
+import us.myles.ViaVersion.api.data.UserConnection
+import us.myles.ViaVersion.api.protocol.ProtocolPipeline
+import us.myles.ViaVersion.api.type.Type
+import us.myles.ViaVersion.exception.CancelCodecException
+import us.myles.ViaVersion.exception.CancelDecoderException
+import us.myles.ViaVersion.exception.CancelEncoderException
+import us.myles.ViaVersion.packets.State
+import us.myles.ViaVersion.util.PipelineUtil
+import java.util.concurrent.TimeUnit
+
+@ChannelHandler.Sharable
+object FrameCoder : MessageToMessageEncoder<ByteBuf>() {
+    override fun encode(ctx: ChannelHandlerContext, msg: ByteBuf, out: MutableList<Any>) {
+        val length = ctx.alloc().buffer(5)
+        Type.VAR_INT.writePrimitive(length, msg.readableBytes())
+        out.add(length)
+        out.add(msg.retain())
+    }
+}
+
+class FrameDecoder : ReplayingDecoder<ByteBuf>() {
+    override fun decode(ctx: ChannelHandlerContext, input: ByteBuf, out: MutableList<Any>) {
+        val length = Type.VAR_INT.readPrimitive(input)
+        if (length >= 2097152) throw IndexOutOfBoundsException()
+        out.add(input.readRetainedSlice(length))
+    }
+}
+
+object ChannelInit : ChannelInitializer<Channel>() {
+    override fun initChannel(ch: Channel) {
+        ch.pipeline().addLast("frame-encoder", FrameCoder)
+                .addLast("frame-decoder", FrameDecoder())
+                .addLast("timeout", ReadTimeoutHandler(30, TimeUnit.SECONDS))
+                .addLast("handler", CloudSideForwarder(null))
+        val user = UserConnection(ch)
+        ProtocolPipeline(user)
+
+        ch.pipeline().addBefore("encoder", "via-encoder", CloudEncodeHandler(user))
+        ch.pipeline().addBefore("decoder", "via-decoder", CloudDecodeHandler(user))
+    }
+}
+
+class CloudDecodeHandler(val info: UserConnection) : MessageToMessageDecoder<ByteBuf>() {
+    override fun decode(ctx: ChannelHandlerContext, bytebuf: ByteBuf, out: MutableList<Any>) {
+        if (!info.checkIncomingPacket()) throw CancelDecoderException.generate(null)
+        if (!info.shouldTransformPacket()) {
+            out.add(bytebuf.retain())
+            return
+        }
+        val transformedBuf: ByteBuf = ctx.alloc().buffer().writeBytes(bytebuf)
+        try {
+            if (info.protocolInfo!!.state == State.HANDSHAKE) {
+                val id = Type.VAR_INT.readPrimitive(transformedBuf)
+                Type.VAR_INT.writePrimitive(transformedBuf, id)
+                if (id == 0 && info.get(CloudData::class.java) == null) {
+                    val ver = Type.VAR_INT.readPrimitive(transformedBuf) // Client ver
+                    Type.VAR_INT.writePrimitive(transformedBuf, ver)
+                    val origAddr = Type.STRING.read(transformedBuf)
+                    val addr = origAddr.split(" ")[0].split(".")
+                    val port = Type.SHORT.readPrimitive(transformedBuf)
+                }
+            }
+
+            info.transformIncoming(transformedBuf, CancelDecoderException::generate)
+            out.add(transformedBuf.retain())
+        } finally {
+            transformedBuf.release()
+        }
+    }
+
+    override fun exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable) {
+        if (PipelineUtil.containsCause(cause, CancelCodecException::class.java)) return
+        super.exceptionCaught(ctx, cause)
+    }
+}
+
+class CloudEncodeHandler(val info: UserConnection) : MessageToMessageEncoder<ByteBuf>() {
+    override fun encode(ctx: ChannelHandlerContext, bytebuf: ByteBuf, out: MutableList<Any>) {
+        info.checkOutgoingPacket()
+        if (!info.shouldTransformPacket()) {
+            out.add(bytebuf.retain())
+            return
+        }
+        val transformedBuf: ByteBuf = ctx.alloc().buffer().writeBytes(bytebuf)
+        try {
+            info.transformOutgoing(transformedBuf, CancelEncoderException::generate)
+            out.add(transformedBuf.retain())
+        } finally {
+            transformedBuf.release()
+        }
+    }
+
+    override fun exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable) {
+        if (PipelineUtil.containsCause(cause, CancelCodecException::class.java)) return
+        super.exceptionCaught(ctx, cause)
+    }
+}

src/main/kotlin/com/github/creeper123123321/viaaas/CloudHandler.kt

@@ -0,0 +1,17 @@
+package com.github.creeper123123321.viaaas
+
+import io.netty.buffer.ByteBuf
+import io.netty.channel.Channel
+import io.netty.channel.ChannelHandlerContext
+import io.netty.channel.SimpleChannelInboundHandler
+import io.netty.util.ReferenceCountUtil
+
+class CloudSideForwarder(var other: Channel?): SimpleChannelInboundHandler<ByteBuf>() {
+    override fun channelRead0(ctx: ChannelHandlerContext, msg: ByteBuf) {
+        try {
+            other?.write(msg)
+        } finally {
+            ReferenceCountUtil.release(msg)
+        }
+    }
+}

src/main/kotlin/com/github/creeper123123321/viaaas/CloudPlatform.kt

@@ -0,0 +1,168 @@
+package com.github.creeper123123321.viaaas
+
+import io.netty.buffer.ByteBuf
+import io.netty.channel.DefaultEventLoop
+import us.myles.ViaVersion.AbstractViaConfig
+import us.myles.ViaVersion.api.Via
+import us.myles.ViaVersion.api.ViaAPI
+import us.myles.ViaVersion.api.ViaVersionConfig
+import us.myles.ViaVersion.api.boss.BossBar
+import us.myles.ViaVersion.api.boss.BossColor
+import us.myles.ViaVersion.api.boss.BossStyle
+import us.myles.ViaVersion.api.command.ViaCommandSender
+import us.myles.ViaVersion.api.configuration.ConfigurationProvider
+import us.myles.ViaVersion.api.data.StoredObject
+import us.myles.ViaVersion.api.data.UserConnection
+import us.myles.ViaVersion.api.platform.*
+import us.myles.ViaVersion.api.protocol.ProtocolRegistry
+import us.myles.ViaVersion.boss.CommonBoss
+import us.myles.ViaVersion.bungee.providers.BungeeMovementTransmitter
+import us.myles.ViaVersion.commands.ViaCommandHandler
+import us.myles.ViaVersion.protocols.base.VersionProvider
+import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.MovementTransmitterProvider
+import us.myles.ViaVersion.sponge.VersionInfo
+import us.myles.viaversion.libs.gson.JsonObject
+import java.io.File
+import java.net.URL
+import java.util.*
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.Executors
+import java.util.concurrent.Future
+import java.util.concurrent.TimeUnit
+import java.util.logging.Logger
+
+object CloudLoader : ViaPlatformLoader {
+    override fun unload() {
+    }
+
+    override fun load() {
+        Via.getManager().providers.use(MovementTransmitterProvider::class.java, BungeeMovementTransmitter());
+    }
+
+}
+
+object CloudCommands : ViaCommandHandler()
+object CloudInjector : ViaInjector {
+    override fun getEncoderName(): String = "via-encoder"
+    override fun getDecoderName() = "via-decoder"
+    override fun getDump(): JsonObject = JsonObject()
+
+    override fun uninject() {
+    }
+
+    override fun inject() {
+    }
+
+
+    override fun getServerProtocolVersion() = 47 // Dummy
+}
+
+class CloudBossBar(title: String, health: Float, style: BossStyle, color: BossColor) : CommonBoss<Unit>(title, health, color, style)
+object CloudAPI : ViaAPI<Unit> {
+    override fun isInjected(p0: UUID): Boolean = false
+    override fun createBossBar(p0: String, p1: BossColor, p2: BossStyle): BossBar<*> = CloudBossBar(p0, 0f, p2, p1)
+    override fun createBossBar(p0: String, p1: Float, p2: BossColor, p3: BossStyle): BossBar<*> = CloudBossBar(p0, p1, p3, p2)
+
+    override fun sendRawPacket(p0: Unit?, p1: ByteBuf?) {
+        TODO("Not yet implemented")
+    }
+    override fun sendRawPacket(p0: UUID?, p1: ByteBuf?) {
+        TODO("Not yet implemented")
+    }
+
+    override fun getPlayerVersion(p0: Unit?): Int {
+        TODO("Not yet implemented")
+    }
+    override fun getPlayerVersion(p0: UUID?): Int {
+        TODO("Not yet implemented")
+    }
+    override fun getVersion(): String = CloudPlatform.pluginVersion
+    override fun getSupportedVersions(): SortedSet<Int> = ProtocolRegistry.getSupportedVersions()
+}
+
+object CloudPlatform : ViaPlatform<Unit> {
+    val connMan = ViaConnectionManager()
+    val executor = Executors.newCachedThreadPool()
+    val eventLoop = DefaultEventLoop()
+    override fun sendMessage(p0: UUID, p1: String) {
+        // todo
+    }
+    override fun kickPlayer(p0: UUID, p1: String): Boolean = false // todo
+    override fun getApi(): ViaAPI<Unit> = CloudAPI
+    override fun getDataFolder(): File = File("viaversion")
+    override fun getConf(): ViaVersionConfig = CloudConfig
+    override fun onReload() {
+    }
+    override fun getDump(): JsonObject = JsonObject()
+    override fun runSync(runnable: Runnable): TaskId = CloudTask(eventLoop.submit(runnable))
+    override fun runSync(p0: Runnable, p1: Long): TaskId = CloudTask(eventLoop.schedule(p0, p1 * 50L, TimeUnit.MILLISECONDS))
+    override fun runRepeatingSync(p0: Runnable, p1: Long): TaskId = CloudTask(eventLoop.scheduleAtFixedRate(p0, 0, p1 * 50L, TimeUnit.MILLISECONDS))
+    override fun getPlatformVersion(): String = "VIAaaS"
+    override fun runAsync(p0: Runnable): TaskId = CloudTask(CompletableFuture.runAsync(p0, executor))
+    override fun getLogger(): Logger = Logger.getLogger("ViaVersion")
+    override fun getConnectionManager(): ViaConnectionManager = connMan
+    override fun getOnlinePlayers(): Array<ViaCommandSender> = arrayOf()
+    override fun cancelTask(p0: TaskId?) {
+        (p0 as CloudTask).obj.cancel(false)
+    }
+    override fun isPluginEnabled(): Boolean = true
+    override fun getConfigurationProvider(): ConfigurationProvider {
+        TODO("Not yet implemented")
+    }
+    override fun getPlatformName(): String = "VIAaaS"
+    override fun getPluginVersion(): String = VersionInfo.VERSION
+    override fun isOldClientsAllowed(): Boolean = true
+}
+
+
+object CloudConfig : AbstractViaConfig(File("config/viaversion.yml")) {
+    // https://github.com/ViaVersion/ViaFabric/blob/mc-1.16/src/main/java/com/github/creeper123123321/viafabric/platform/VRViaConfig.java
+    override fun getDefaultConfigURL(): URL = javaClass.classLoader.getResource("assets/viaversion/config.yml")!!
+
+    override fun handleConfig(config: Map<String, Any>) {
+        // Nothing Currently
+    }
+
+    override fun getUnsupportedOptions(): List<String> = UNSUPPORTED
+    override fun isAntiXRay(): Boolean = false
+    override fun isItemCache(): Boolean = false
+    override fun isNMSPlayerTicking(): Boolean = false
+    override fun is1_12QuickMoveActionFix(): Boolean = false
+    override fun getBlockConnectionMethod(): String = "packet"
+    override fun is1_9HitboxFix(): Boolean = false
+    override fun is1_14HitboxFix(): Boolean = false
+
+    // Based on Sponge ViaVersion
+    private val UNSUPPORTED = listOf("anti-xray-patch", "bungee-ping-interval",
+                "bungee-ping-save", "bungee-servers", "quick-move-action-fix", "nms-player-ticking",
+                "item-cache", "velocity-ping-interval", "velocity-ping-save", "velocity-servers",
+                "blockconnection-method", "change-1_9-hitbox", "change-1_14-hitbox")
+
+    init {
+        // Load config
+        reloadConfig()
+    }
+}
+
+class CloudTask(val obj: Future<*>) : TaskId {
+    override fun getObject(): Any = obj
+}
+
+object CloudConsoleSender : ViaCommandSender {
+    override fun sendMessage(p0: String) = println(p0.replace(Regex("§."), ""))
+    override fun getName(): String = "VIAaaS console"
+    override fun getUUID(): UUID = UUID.fromString(name)
+    override fun hasPermission(p0: String): Boolean = true
+}
+
+object CloudVersionProvider: VersionProvider() {
+    override fun getServerProtocol(connection: UserConnection): Int {
+        val data = connection.get(CloudData::class.java)
+        val ver = data?.backendVer
+        if (ver != null) return ver
+        return super.getServerProtocol(connection)
+    }
+}
+
+data class CloudData(val userConnection: UserConnection, val backendAddr: String, val backendVer: Int)
+    : StoredObject(userConnection)

src/main/kotlin/com/github/creeper123123321/viaaas/ViaaaS.kt

@@ -0,0 +1,48 @@
+package com.github.creeper123123321.viaaas
+
+import io.netty.bootstrap.ServerBootstrap
+import io.netty.channel.nio.NioEventLoopGroup
+import io.netty.channel.socket.nio.NioServerSocketChannel
+import us.myles.ViaVersion.ViaManager
+import us.myles.ViaVersion.api.Via
+import us.myles.ViaVersion.api.data.MappingDataLoader
+import us.myles.ViaVersion.api.data.UserConnection
+
+
+fun main(args: Array<String>) {
+    Via.init(ViaManager.builder()
+            .injector(CloudInjector)
+            .loader(CloudLoader)
+            .commandHandler(CloudCommands)
+            .platform(CloudPlatform).build())
+
+    MappingDataLoader.enableMappingsCache()
+
+    Via.getManager().init()
+    val boss = NioEventLoopGroup()
+    val worker = NioEventLoopGroup()
+    val future = ServerBootstrap().group(boss, worker)
+            .channel(NioServerSocketChannel::class.java)
+            .childHandler(ChannelInit)
+            .bind(25565)
+
+    loop@ while (true) {
+        try {
+            val cmd = readLine()?.trim()?.split(" ")
+            when (cmd?.get(0)) {
+                "stop", "end" -> break@loop
+                "viaversion", "viaver" -> Via.getManager().commandHandler.onCommand(CloudConsoleSender, cmd.subList(1, cmd.size)
+                        .toTypedArray())
+                else -> println("unknown command")
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+    }
+
+    future.channel().close().sync()
+    boss.shutdownGracefully()
+    worker.shutdownGracefully()
+    Via.getManager().destroy()
+}
+