Initial Commit

.gitignore

@@ -0,0 +1,120 @@
+# User-specific stuff
+.idea/
+testing/
+*.iml
+*.ipr
+*.iws
+
+# IntelliJ
+out/
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+.gradle
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Cache of project
+.gradletasknamecache
+
+**/build/
+
+# Common working directory
+run/
+runs/
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+

build.gradle

@@ -0,0 +1,28 @@
+plugins {
+    id 'java'
+}
+
+group 'de.pauljako'
+version '1.0.0'
+
+repositories {
+    mavenCentral()
+    maven {
+        name "craftsblockReleases"
+        url "https://repo.craftsblock.de/releases"
+    }
+
+
+}
+
+dependencies {
+    implementation 'de.craftsblock:craftsnet:3.2.2-SNAPSHOT'
+    implementation 'de.craftsblock.craftscore:CraftsCore:3.7.53-SNAPSHOT'
+    implementation 'com.squareup.okhttp3:okhttp:4.12.0'
+    implementation 'com.google.code.gson:gson:2.10'
+
+}
+
+test {
+    useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,252 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# 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"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

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+@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
+@rem SPDX-License-Identifier: Apache-2.0
+@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=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@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% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+: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 %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 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!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1,2 @@
+rootProject.name = 'AirServer'
+

src/main/java/de/pauljako/cosmeticserver/ClientMapping.java

@@ -0,0 +1,7 @@
+package de.pauljako.cosmeticserver;
+
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+public record ClientMapping(UUID uuid, ConcurrentHashMap<String, Object> cosmetics) {
+}

src/main/java/de/pauljako/cosmeticserver/CosmeticServer.java

@@ -0,0 +1,58 @@
+package de.pauljako.cosmeticserver;
+
+import de.craftsblock.craftscore.json.Json;
+import de.craftsblock.craftscore.json.JsonParser;
+import de.craftsblock.craftsnet.addon.Addon;
+import de.craftsblock.craftsnet.api.Handler;
+
+import java.io.File;
+
+public class CosmeticServer extends Addon {
+
+
+    private static CosmeticServer instance;
+
+    private Json serverCosmetics;
+
+    private Thread thread;
+
+    @Override
+    public void onEnable() {
+
+        instance = this;
+
+        File assets = new File(getDataFolder(), "assets");
+        assets.mkdirs();
+
+        File file = new File(getDataFolder(), "cosmetics.json");
+        serverCosmetics = JsonParser.parse(file);
+
+        routeRegistry().share("/v1/cosmetic/assets", assets);
+
+        CosmeticSocket socket = new CosmeticSocket();
+        routeRegistry().register((Handler) socket);
+        listenerRegistry().register(socket);
+        new HeartbeatThread();
+    }
+
+    @Override
+    public void onDisable() {
+        try {
+            thread.interrupt();
+            thread.join(15);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        instance = null;
+
+    }
+
+    public Json getServerCosmetics() {
+        return serverCosmetics;
+    }
+
+    public static CosmeticServer instance() {
+        return instance;
+    }
+}

src/main/java/de/pauljako/cosmeticserver/CosmeticSocket.java

@@ -0,0 +1,138 @@
+package de.pauljako.cosmeticserver;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import de.craftsblock.craftscore.event.EventHandler;
+import de.craftsblock.craftscore.event.ListenerAdapter;
+import de.craftsblock.craftscore.json.Json;
+import de.craftsblock.craftscore.json.JsonParser;
+import de.craftsblock.craftscore.utils.Validator;
+import de.craftsblock.craftsnet.api.websocket.*;
+import de.craftsblock.craftsnet.api.websocket.annotations.MessageReceiver;
+import de.craftsblock.craftsnet.api.websocket.annotations.Socket;
+import de.craftsblock.craftsnet.events.sockets.ClientDisconnectEvent;
+
+import java.io.IOException;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Socket("/v1/cosmetic")
+public class CosmeticSocket implements SocketHandler, ListenerAdapter {
+
+    public static final ConcurrentHashMap<WebSocketClient, ClientMapping> clients = new ConcurrentHashMap<>();
+
+    public static final ConcurrentHashMap<UUID, ClientMapping> cosmetics = new ConcurrentHashMap<>();
+
+    @MessageReceiver
+    public void handleMessage(SocketExchange exchange, String message) throws IOException {
+        WebSocketClient client = exchange.client();
+        if (!Validator.isJsonValid(message)) {
+            client.sendMessage(JsonParser.parse("{}")
+                    .set("error", "Send data must be in JSON format")
+                    .asString());
+            return;
+        }
+
+        Json data = JsonParser.parse(message);
+        if (data.contains("search")) {
+
+            String type = data.getString("search");
+            String name = data.getString("name");
+
+            JsonObject cosmetic = searchServerCosmetic(type, name);
+
+            Json result = Json.empty()
+                    .set("id", data.getLong("id"))
+                    .set("search", type)
+                    .set("name", name)
+                    .set("result", false);
+
+            if (cosmetic != null) {
+                result.set("result", cosmetic);
+            }
+
+            exchange.client().sendMessage(result.toString());
+            return;
+        }
+
+        if (data.contains("cosmetics") && data.contains("uuid")) {
+            UUID uuid = UUID.fromString(data.getString("uuid"));
+
+            ConcurrentHashMap<String, Object> cosmetics = new ConcurrentHashMap<>();
+            data.get("cosmetics").getAsJsonObject().entrySet().forEach(entry -> cosmetics.put(entry.getKey(), entry.getValue()));
+
+
+            convertToServer(cosmetics);
+
+            ClientMapping mapping = new ClientMapping(uuid, cosmetics);
+            exchange.broadcast(JsonParser.parse("{}")
+                    .set("uuid", uuid.toString())
+                    .set("cosmetics", bakeData(cosmetics))
+                    .asString());
+            clients.put(client, mapping);
+            CosmeticSocket.cosmetics.put(uuid, mapping);
+        }
+
+        JsonArray array = new JsonArray();
+        if (data.contains("data")) {
+            for (UUID uuid : data.getStringList("data").stream().map(UUID::fromString).toList()) {
+                if (cosmetics.containsKey(uuid)) {
+                    ClientMapping mapping = cosmetics.get(uuid);
+                    Json target = JsonParser.parse("{}");
+                    target.set("uuid", uuid.toString());
+                    target.set("cosmetics", bakeData(mapping.cosmetics()));
+                    array.add(target.getObject());
+                }
+            }
+        }
+
+        client.sendMessage(JsonParser.parse("{}")
+                .set("data", array)
+                .asString());
+
+    }
+
+    private void convertToServer(ConcurrentHashMap<String, Object> cosmetics) {
+        cosmetics.forEach((type, data) -> {
+            if (!(data instanceof JsonElement element)) return;
+            if (!element.isJsonPrimitive() && !element.getAsJsonPrimitive().isString()) return;
+
+            String name = element.getAsString();
+            JsonObject cosmetic = searchServerCosmetic(type, name);
+            if (cosmetic == null) return;
+            cosmetics.put(type, cosmetic);
+        });
+    }
+
+    private JsonObject searchServerCosmetic(String type, String name) {
+        Json serverCosmetics = CosmeticServer.instance().getServerCosmetics();
+
+        if (!serverCosmetics.contains(type + "." + name)) return null;
+        Json cosmetic = JsonParser.parse(serverCosmetics.get(type + "." + name));
+        String id = cosmetic.contains("id") ? cosmetic.getString("id") : name;
+        return (JsonObject) JsonParser.parse("{}")
+                .set("display", cosmetic.contains("display") ? cosmetic.get("display") : name)
+                .set("name", name)
+                .set("delay", cosmetic.contains("delay") ? cosmetic.getInt("delay") : 30)
+                .set("frames", cosmetic.contains("frames") ? cosmetic.getStringList("frames").size() : 1)
+                .set("url", "http://cosmetic.airclient.pauljako.de/v1/cosmetic/assets/" + type + "/" + name + "/frame_" + id)
+                .getObject();
+    }
+
+    private JsonElement bakeData(ConcurrentHashMap<String, Object> elements) {
+        Json object = JsonParser.parse("{}");
+        elements.forEach(object::set);
+        return object.getObject();
+    }
+
+    @EventHandler
+    public void handleDisconnect(ClientDisconnectEvent event) {
+        WebSocketClient client = event.getExchange().client();
+        if (!clients.containsKey(client)) return;
+
+        ClientMapping mapping = clients.remove(client);
+        cosmetics.remove(mapping.uuid());
+    }
+
+}

src/main/java/de/pauljako/cosmeticserver/HeartbeatThread.java

@@ -0,0 +1,29 @@
+package de.pauljako.cosmeticserver;
+
+import de.craftsblock.craftsnet.api.websocket.WebSocketClient;
+
+public class HeartbeatThread implements Runnable{
+
+    public HeartbeatThread() {
+        Thread thread = new Thread(this);
+        thread.setName("Connection Heartbeat Thread");
+        thread.start();
+        Runtime.getRuntime().addShutdownHook(new Thread(thread::interrupt));
+    }
+
+    @Override
+    public void run() {
+        while (!Thread.currentThread().isInterrupted()) {
+
+            try {
+                for (WebSocketClient client : CosmeticSocket.clients.keySet()) {
+                    client.sendMessage("ping");
+                }
+                Thread.sleep(15000);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+
+        }
+    }
+}

src/main/resources/addon.json

@@ -0,0 +1,4 @@
+{
+  "name": "AirServer",
+  "main": "de.pauljako.cosmeticserver.CosmeticServer"
+}