Add localization support. Fixes #230

This is less flexible, but it is an Adventure-native solution and doesn't require an onerous amount of work to maintain.

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

@@ -78,6 +78,7 @@ import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.ResourceBundle;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ConcurrentHashMap;
@@ -90,7 +91,11 @@ import java.util.function.IntFunction;
 import java.util.stream.Collectors;
 import net.kyori.adventure.audience.Audience;
 import net.kyori.adventure.audience.ForwardingAudience;
+import net.kyori.adventure.key.Key;
 import net.kyori.adventure.text.Component;
+import net.kyori.adventure.translation.GlobalTranslator;
+import net.kyori.adventure.translation.TranslationRegistry;
+import net.kyori.adventure.util.UTF8ResourceBundleControl;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.asynchttpclient.AsyncHttpClient;
@@ -193,6 +198,8 @@ public class VelocityServer implements ProxyServer, ForwardingAudience {
     logger.info("Booting up {} {}...", version().getName(), version().getVersion());
     console.setupStreams();
 
+    registerTranslations();
+
     serverKeyPair = EncryptionUtils.createRsaKeyPair(1024);
 
     cm.logChannelInformation();
@@ -236,6 +243,15 @@ public class VelocityServer implements ProxyServer, ForwardingAudience {
     Metrics.VelocityMetrics.startMetrics(this, configuration.getMetrics());
   }
 
+  private void registerTranslations() {
+    final TranslationRegistry translationRegistry = TranslationRegistry
+        .create(Key.key("velocity", "translations"));
+    translationRegistry.registerAll(Locale.US,
+        ResourceBundle.getBundle("com/velocitypowered/proxy/messages", Locale.US,
+            UTF8ResourceBundleControl.get()), false);
+    GlobalTranslator.get().addSource(translationRegistry);
+  }
+
   @SuppressFBWarnings("DM_EXIT")
   private void doStartupConfigLoad() {
     try {

proxy/src/main/java/com/velocitypowered/proxy/command/builtin/CommandMessages.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.velocitypowered.proxy.command.builtin;
+
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.TranslatableComponent;
+import net.kyori.adventure.text.format.NamedTextColor;
+
+public class CommandMessages {
+
+  public static final TranslatableComponent PLAYERS_ONLY = Component.translatable(
+      "velocity.command.players-only", NamedTextColor.RED);
+  public static final TranslatableComponent SERVER_DOES_NOT_EXIST = Component.translatable(
+      "velocity.command.server-does-not-exist", NamedTextColor.RED);
+}

proxy/src/main/java/com/velocitypowered/proxy/command/builtin/GlistCommand.java

@@ -78,11 +78,7 @@ public class GlistCommand {
     final CommandSource source = context.getSource();
     sendTotalProxyCount(source);
     source.sendMessage(Identity.nil(),
-        Component.text().content("To view all players on servers, use ")
+        Component.translatable("velocity.command.glist-view-all", NamedTextColor.YELLOW));
-            .color(NamedTextColor.YELLOW)
-            .append(Component.text("/glist all", NamedTextColor.DARK_AQUA))
-            .append(Component.text(".", NamedTextColor.YELLOW))
-            .build());
     return 1;
   }
 
@@ -98,7 +94,7 @@ public class GlistCommand {
       Optional<RegisteredServer> registeredServer = server.server(serverName);
       if (!registeredServer.isPresent()) {
         source.sendMessage(Identity.nil(),
-            Component.text("Server " + serverName + " doesn't exist.", NamedTextColor.RED));
+            CommandMessages.SERVER_DOES_NOT_EXIST.args(Component.text(serverName)));
         return -1;
       }
       sendServerPlayers(source, registeredServer.get(), false);
@@ -107,10 +103,19 @@ public class GlistCommand {
   }
 
   private void sendTotalProxyCount(CommandSource target) {
+    int online = server.countConnectedPlayers();
     target.sendMessage(Identity.nil(), Component.text()
-        .content("There are ").color(NamedTextColor.YELLOW)
+        .append(Component.text(Integer.toString(online), NamedTextColor.GREEN))
-        .append(Component.text(server.connectedPlayers().size(), NamedTextColor.GREEN))
+        .append(Component.space())
-        .append(Component.text(" player(s) online.", NamedTextColor.YELLOW))
+        .append(Component.translatable(
+            online == 1
+                ? "velocity.command.glist-player-singular"
+                : "velocity.command.glist-player-plural",
+            NamedTextColor.YELLOW
+        ))
+        .append(Component.space())
+        .append(Component.translatable("velocity.command.glist-total-suffix",
+            NamedTextColor.YELLOW))
         .build());
   }
 

proxy/src/main/java/com/velocitypowered/proxy/command/builtin/ServerCommand.java

@@ -35,6 +35,7 @@ import java.util.stream.Stream;
 import net.kyori.adventure.identity.Identity;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.TranslatableComponent;
 import net.kyori.adventure.text.event.ClickEvent;
 import net.kyori.adventure.text.format.NamedTextColor;
 
@@ -53,8 +54,7 @@ public class ServerCommand implements SimpleCommand {
     final String[] args = invocation.arguments();
 
     if (!(source instanceof Player)) {
-      source.sendMessage(Identity.nil(), Component.text("Only players may run this command.",
+      source.sendMessage(Identity.nil(), CommandMessages.PLAYERS_ONLY);
-          NamedTextColor.RED));
       return;
     }
 
@@ -64,8 +64,8 @@ public class ServerCommand implements SimpleCommand {
       String serverName = args[0];
       Optional<RegisteredServer> toConnect = server.server(serverName);
       if (!toConnect.isPresent()) {
-        player.sendMessage(Identity.nil(),
+        player.sendMessage(Identity.nil(), CommandMessages.SERVER_DOES_NOT_EXIST
-            Component.text("Server " + serverName + " doesn't exist.", NamedTextColor.RED));
+            .args(Component.text(serverName)));
         return;
       }
 
@@ -78,19 +78,23 @@ public class ServerCommand implements SimpleCommand {
   private void outputServerInformation(Player executor) {
     String currentServer = executor.connectedServer().map(ServerConnection::serverInfo)
         .map(ServerInfo::name).orElse("<unknown>");
-    executor.sendMessage(Identity.nil(), Component.text(
+    executor.sendMessage(Identity.nil(), Component.translatable(
-        "You are currently connected to " + currentServer + ".", NamedTextColor.YELLOW));
+        "velocity.command.server-current-server",
+        NamedTextColor.YELLOW,
+        Component.text(currentServer)));
 
     List<RegisteredServer> servers = BuiltinCommandUtil.sortedServerList(server);
     if (servers.size() > MAX_SERVERS_TO_LIST) {
-      executor.sendMessage(Identity.nil(), Component.text(
+      executor.sendMessage(Identity.nil(), Component.translatable(
-          "Too many servers to list. Tab-complete to show all servers.", NamedTextColor.RED));
+          "velocity.command.server-too-many", NamedTextColor.RED));
       return;
     }
 
     // Assemble the list of servers as components
-    TextComponent.Builder serverListBuilder = Component.text().content("Available servers: ")
+    TextComponent.Builder serverListBuilder = Component.text()
-        .color(NamedTextColor.YELLOW);
+        .append(Component.translatable("velocity.command.server-available",
+            NamedTextColor.YELLOW))
+        .append(Component.space());
     for (int i = 0; i < servers.size(); i++) {
       RegisteredServer rs = servers.get(i);
       serverListBuilder.append(formatServerComponent(currentServer, rs));
@@ -106,17 +110,31 @@ public class ServerCommand implements SimpleCommand {
     ServerInfo serverInfo = server.serverInfo();
     TextComponent serverTextComponent = Component.text(serverInfo.name());
 
-    String playersText = server.connectedPlayers().size() + " player(s) online";
+    int connectedPlayers = server.connectedPlayers().size();
+    TranslatableComponent playersTextComponent;
+    if (connectedPlayers == 1) {
+      playersTextComponent = Component.translatable("velocity.command.server-tooltip-player-online");
+    } else {
+      playersTextComponent = Component.translatable("velocity.command.server-tooltip-players-online");
+    }
+    playersTextComponent = playersTextComponent.args(Component.text(connectedPlayers));
+
     if (serverInfo.name().equals(currentPlayerServer)) {
       serverTextComponent = serverTextComponent.color(NamedTextColor.GREEN)
           .hoverEvent(
-              showText(Component.text("Currently connected to this server\n" + playersText))
+              showText(
+                  Component.translatable("velocity.command.server-tooltip-current-server")
+                    .append(Component.newline())
+                    .append(playersTextComponent))
           );
     } else {
       serverTextComponent = serverTextComponent.color(NamedTextColor.GRAY)
           .clickEvent(ClickEvent.runCommand("/server " + serverInfo.name()))
           .hoverEvent(
-              showText(Component.text("Click to connect to this server\n" + playersText))
+              showText(
+                  Component.translatable("velocity.command.server-tooltip-offer-connect-server")
+                      .append(Component.newline())
+                      .append(playersTextComponent))
           );
     }
     return serverTextComponent;

proxy/src/main/java/com/velocitypowered/proxy/command/builtin/VelocityCommand.java

@@ -17,7 +17,6 @@
 
 package com.velocitypowered.proxy.command.builtin;
 
-import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
@@ -49,6 +48,7 @@ import java.util.stream.Collectors;
 import net.kyori.adventure.identity.Identity;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.TranslatableComponent;
 import net.kyori.adventure.text.event.ClickEvent;
 import net.kyori.adventure.text.event.HoverEvent;
 import net.kyori.adventure.text.format.NamedTextColor;
@@ -180,17 +180,15 @@ public class VelocityCommand implements SimpleCommand {
     public void execute(CommandSource source, String @NonNull [] args) {
       try {
         if (server.reloadConfiguration()) {
-          source.sendMessage(Identity.nil(), Component.text(
+          source.sendMessage(Component.translatable("velocity.command.reload-success",
-              "Configuration reloaded.", NamedTextColor.GREEN));
+              NamedTextColor.GREEN));
         } else {
-          source.sendMessage(Identity.nil(), Component.text(
+          source.sendMessage(Component.translatable("velocity.command.reload-failure",
-              "Unable to reload your configuration. Check the console for more details.",
               NamedTextColor.RED));
         }
       } catch (Exception e) {
         logger.error("Unable to reload configuration", e);
-        source.sendMessage(Identity.nil(), Component.text(
+        source.sendMessage(Component.translatable("velocity.command.reload-failure",
-            "Unable to reload your configuration. Check the console for more details.",
             NamedTextColor.RED));
       }
     }
@@ -219,33 +217,35 @@ public class VelocityCommand implements SimpleCommand {
 
       ProxyVersion version = server.version();
 
-      TextComponent velocity = Component.text().content(version.getName() + " ")
+      Component velocity = Component.text().content(version.getName() + " ")
           .decoration(TextDecoration.BOLD, true)
           .color(VELOCITY_COLOR)
           .append(Component.text(version.getVersion()).decoration(TextDecoration.BOLD, false))
           .build();
-      TextComponent copyright = Component
+      Component copyright = Component
-          .text("Copyright 2018-2020 " + version.getVendor() + ". " + version.getName()
+          .translatable("velocity.command.version-copyright",
-              + " is licensed under the terms of the GNU General Public License v3.");
+              Component.text(version.getVendor()),
+              Component.text(version.getName()));
       source.sendMessage(Identity.nil(), velocity);
       source.sendMessage(Identity.nil(), copyright);
 
       if (version.getName().equals("Velocity")) {
-        TextComponent velocityWebsite = Component.text()
+        TextComponent embellishment = Component.text()
-            .content("Visit the ")
+            .append(Component.text().content("velocitypowered.com")
-            .append(Component.text().content("Velocity website")
                 .color(NamedTextColor.GREEN)
+                .decoration(TextDecoration.UNDERLINED, true)
                 .clickEvent(
                     ClickEvent.openUrl("https://www.velocitypowered.com"))
                 .build())
-            .append(Component.text(" or the "))
+            .append(Component.text(" - "))
-            .append(Component.text().content("Velocity GitHub")
+            .append(Component.text().content("GitHub")
                 .color(NamedTextColor.GREEN)
+                .decoration(TextDecoration.UNDERLINED, true)
                 .clickEvent(ClickEvent.openUrl(
                     "https://github.com/VelocityPowered/Velocity"))
                 .build())
             .build();
-        source.sendMessage(Identity.nil(), velocityWebsite);
+        source.sendMessage(Identity.nil(), embellishment);
       }
     }
 
@@ -274,12 +274,13 @@ public class VelocityCommand implements SimpleCommand {
       int pluginCount = plugins.size();
 
       if (pluginCount == 0) {
-        source.sendMessage(Identity.nil(), Component.text(
+        source.sendMessage(Component.translatable("velocity.command.no-plugins",
-            "No plugins installed.", NamedTextColor.YELLOW));
+            NamedTextColor.YELLOW));
         return;
       }
 
-      TextComponent.Builder output = Component.text().content("Plugins: ")
+      TranslatableComponent.Builder output = Component.translatable()
+          .key("velocity.command.plugins-list")
           .color(NamedTextColor.YELLOW);
       for (int i = 0; i < pluginCount; i++) {
         PluginContainer plugin = plugins.get(i);
@@ -300,15 +301,21 @@ public class VelocityCommand implements SimpleCommand {
 
       description.url().ifPresent(url -> {
         hoverText.append(Component.newline());
-        hoverText.append(Component.text("Website: " + url));
+        hoverText.append(Component.translatable(
+            "velocity.command.plugin-tooltip-website",
+            Component.text(url)));
       });
       if (!description.authors().isEmpty()) {
         hoverText.append(Component.newline());
         if (description.authors().size() == 1) {
-          hoverText.append(Component.text("Author: " + description.authors().get(0)));
+          hoverText.append(Component.translatable("velocity.command.plugin-tooltip-author",
+              Component.text(description.authors().get(0))));
         } else {
-          hoverText.append(Component.text("Authors: " + Joiner.on(", ")
+          hoverText.append(
-              .join(description.authors())));
+              Component.translatable("velocity.command.plugin-tooltip-author",
+                Component.text(String.join(", ", description.authors()))
+              )
+          );
         }
       }
       description.description().ifPresent(pdesc -> {
@@ -352,8 +359,8 @@ public class VelocityCommand implements SimpleCommand {
       JsonArray connectOrder = new JsonArray();
       List<String> attemptedConnectionOrder = ImmutableList.copyOf(
               server.configuration().getAttemptConnectionOrder());
-      for (int i = 0; i < attemptedConnectionOrder.size(); i++) {
+      for (String s : attemptedConnectionOrder) {
-        connectOrder.add(attemptedConnectionOrder.get(i));
+        connectOrder.add(s);
       }
 
       JsonObject proxyConfig = InformationUtils.collectProxyConfig(server.configuration());
@@ -446,7 +453,7 @@ public class VelocityCommand implements SimpleCommand {
           e.getCause().printStackTrace();
         } catch (JsonParseException e) {
           source.sendMessage(Component.text()
-                  .content("An error occurred on the Velocity-servers and the dump could not "
+                  .content("An error occurred on the Velocity servers and the dump could not "
                           + "be completed. Please contact the Velocity staff about this problem. "
                           + "If you do, provide the details about this error from the Velocity "
                           + "console or server log.")

proxy/src/main/java/com/velocitypowered/proxy/config/VelocityConfiguration.java

@@ -45,7 +45,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Random;
-import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
 import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
 import org.apache.logging.log4j.LogManager;
@@ -72,25 +71,23 @@ public class VelocityConfiguration implements ProxyConfig {
   @Expose private final Advanced advanced;
   @Expose private final Query query;
   private final Metrics metrics;
-  private final Messages messages;
   private net.kyori.adventure.text.@MonotonicNonNull Component motdAsComponent;
   private @Nullable Favicon favicon;
 
   private VelocityConfiguration(Servers servers, ForcedHosts forcedHosts, Advanced advanced,
-      Query query, Metrics metrics, Messages messages) {
+      Query query, Metrics metrics) {
     this.servers = servers;
     this.forcedHosts = forcedHosts;
     this.advanced = advanced;
     this.query = query;
     this.metrics = metrics;
-    this.messages = messages;
   }
 
   private VelocityConfiguration(String bind, String motd, int showMaxPlayers, boolean onlineMode,
       boolean preventClientProxyConnections, boolean announceForge,
       PlayerInfoForwarding playerInfoForwardingMode, byte[] forwardingSecret,
       boolean onlineModeKickExistingPlayers, PingPassthroughMode pingPassthrough, Servers servers,
-      ForcedHosts forcedHosts, Advanced advanced, Query query, Metrics metrics, Messages messages) {
+      ForcedHosts forcedHosts, Advanced advanced, Query query, Metrics metrics) {
     this.bind = bind;
     this.motd = motd;
     this.showMaxPlayers = showMaxPlayers;
@@ -106,7 +103,6 @@ public class VelocityConfiguration implements ProxyConfig {
     this.advanced = advanced;
     this.query = query;
     this.metrics = metrics;
-    this.messages = messages;
   }
 
   /**
@@ -373,10 +369,6 @@ public class VelocityConfiguration implements ProxyConfig {
     return advanced.isLogCommandExecutions();
   }
 
-  public Messages getMessages() {
-    return messages;
-  }
-
   @Override
   public String toString() {
     return MoreObjects.toStringHelper(this)
@@ -450,7 +442,6 @@ public class VelocityConfiguration implements ProxyConfig {
     CommentedConfig advancedConfig = config.get("advanced");
     CommentedConfig queryConfig = config.get("query");
     CommentedConfig metricsConfig = config.get("metrics");
-    CommentedConfig messagesConfig = config.get("messages");
     PlayerInfoForwarding forwardingMode = config.getEnumOrElse("player-info-forwarding-mode",
         PlayerInfoForwarding.NONE);
     PingPassthroughMode pingPassthroughMode = config.getEnumOrElse("ping-passthrough",
@@ -480,8 +471,7 @@ public class VelocityConfiguration implements ProxyConfig {
         new ForcedHosts(forcedHostsConfig),
         new Advanced(advancedConfig),
         new Query(queryConfig),
-        new Metrics(metricsConfig),
+        new Metrics(metricsConfig)
-        new Messages(messagesConfig, defaultConfig.get("messages"))
     );
   }
 
@@ -793,73 +783,4 @@ public class VelocityConfiguration implements ProxyConfig {
       return enabled;
     }
   }
-
-  public static class Messages {
-
-    private final CommentedConfig toml;
-    private final CommentedConfig defaultToml;
-
-    private final String kickPrefix;
-    private final String disconnectPrefix;
-    private final String onlineModeOnly;
-    private final String noAvailableServers;
-    private final String alreadyConnected;
-    private final String movedToNewServerPrefix;
-    private final String genericConnectionError;
-
-    private Messages(CommentedConfig toml, CommentedConfig defaultToml) {
-      this.toml = toml;
-      this.defaultToml = defaultToml;
-      this.kickPrefix = getString("kick-prefix");
-      this.disconnectPrefix = getString("disconnect-prefix");
-      this.onlineModeOnly = getString("online-mode-only");
-      this.noAvailableServers = getString("no-available-servers");
-      this.alreadyConnected = getString("already-connected");
-      this.movedToNewServerPrefix = getString("moved-to-new-server-prefix");
-      this.genericConnectionError = getString("generic-connection-error");
-    }
-
-    private String getString(String path) {
-      String def = defaultToml.getOrElse(path, "");
-      if (toml == null) {
-        return def;
-      }
-      return toml.getOrElse(path, def);
-    }
-
-    public Component getKickPrefix(String server) {
-      return deserialize(String.format(kickPrefix, server));
-    }
-
-    public Component getDisconnectPrefix(String server) {
-      return deserialize(String.format(disconnectPrefix, server));
-    }
-
-    public Component getOnlineModeOnly() {
-      return deserialize(onlineModeOnly);
-    }
-
-    public Component getNoAvailableServers() {
-      return deserialize(noAvailableServers);
-    }
-
-    public Component getAlreadyConnected() {
-      return deserialize(alreadyConnected);
-    }
-
-    public Component getMovedToNewServerPrefix() {
-      return deserialize(movedToNewServerPrefix);
-    }
-
-    public Component getGenericConnectionError() {
-      return deserialize(genericConnectionError);
-    }
-
-    private Component deserialize(String str) {
-      if (str.startsWith("{")) {
-        return GsonComponentSerializer.gson().deserialize(str);
-      }
-      return LegacyComponentSerializer.legacyAmpersand().deserialize(str);
-    }
-  }
 }

proxy/src/main/java/com/velocitypowered/proxy/connection/backend/LoginSessionHandler.java

@@ -50,8 +50,8 @@ import net.kyori.adventure.text.TextComponent;
 
 public class LoginSessionHandler implements MinecraftSessionHandler {
 
-  private static final TextComponent MODERN_IP_FORWARDING_FAILURE = Component
+  private static final Component MODERN_IP_FORWARDING_FAILURE = Component
-      .text("Your server did not send a forwarding request to the proxy. Is it set up correctly?");
+      .translatable("velocity.error.modern-forwarding-failed");
 
   private final VelocityServer server;
   private final VelocityServerConnection serverConn;

proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java

@@ -168,9 +168,8 @@ public class ClientPlaySessionHandler implements MinecraftSessionHandler {
           .exceptionally(e -> {
             logger.info("Exception occurred while running command for {}",
                 player.username(), e);
-            player.sendMessage(Identity.nil(),
+            player.sendMessage(Component.translatable("velocity.command.generic-error",
-                Component.text("An error occurred while running this command.",
+                NamedTextColor.RED));
-                    NamedTextColor.RED));
             return null;
           });
     } else {
@@ -335,7 +334,8 @@ public class ClientPlaySessionHandler implements MinecraftSessionHandler {
 
   @Override
   public void exception(Throwable throwable) {
-    player.disconnect(server.configuration().getMessages().getGenericConnectionError());
+    player.disconnect(Component.translatable("velocity.error.player-connection-error",
+        NamedTextColor.RED));
   }
 
   @Override

proxy/src/main/java/com/velocitypowered/proxy/connection/client/ConnectedPlayer.java

@@ -446,18 +446,18 @@ public class ConnectedPlayer implements MinecraftConnectionAssociation, Player {
         wrapped = cause;
       }
     }
-    String userMessage;
+
+    Component friendlyError;
     if (connectedServer != null && connectedServer.serverInfo().equals(server.serverInfo())) {
-      userMessage = "Your connection to " + server.serverInfo().name() + " encountered an "
+      friendlyError = Component.translatable("velocity.error.connected-server-error",
-          + "error.";
+          Component.text(server.serverInfo().name()));
     } else {
       logger.error("{}: unable to connect to server {}", this, server.serverInfo().name(),
           wrapped);
-      userMessage = "Unable to connect to " + server.serverInfo().name() + ". Try again "
+      friendlyError = Component.translatable("velocity.error.connecting-server-error",
-          + "later.";
+          Component.text(server.serverInfo().name()));
     }
-    handleConnectionException(server, null, Component.text(userMessage,
+    handleConnectionException(server, null, friendlyError.color(NamedTextColor.RED), safe);
-        NamedTextColor.RED), safe);
   }
 
   /**
@@ -473,26 +473,22 @@ public class ConnectedPlayer implements MinecraftConnectionAssociation, Player {
       return;
     }
 
-    VelocityConfiguration.Messages messages = this.server.configuration().getMessages();
     Component disconnectReason = GsonComponentSerializer.gson().deserialize(disconnect.getReason());
     String plainTextReason = PASS_THRU_TRANSLATE.serialize(disconnectReason);
     if (connectedServer != null && connectedServer.serverInfo().equals(server.serverInfo())) {
       logger.error("{}: kicked from server {}: {}", this, server.serverInfo().name(),
           plainTextReason);
-      handleConnectionException(server, disconnectReason, Component.text()
+      handleConnectionException(server, disconnectReason,
-          .append(messages.getKickPrefix(server.serverInfo().name())
+          Component.translatable("velocity.error.moved-to-new-server", NamedTextColor.RED,
-              .colorIfAbsent(NamedTextColor.RED))
+              Component.text(server.serverInfo().name()),
-          .color(NamedTextColor.RED)
+              disconnectReason), safe);
-          .append(disconnectReason)
-          .build(), safe);
     } else {
       logger.error("{}: disconnected while connecting to {}: {}", this,
           server.serverInfo().name(), plainTextReason);
-      handleConnectionException(server, disconnectReason, Component.text()
+      handleConnectionException(server, disconnectReason,
-          .append(messages.getDisconnectPrefix(server.serverInfo().name())
+          Component.translatable("velocity.error.cant-connect", NamedTextColor.RED,
-              .colorIfAbsent(NamedTextColor.RED))
+              Component.text(server.serverInfo().name()),
-          .append(disconnectReason)
+              disconnectReason), safe);
-          .build(), safe);
     }
   }
 
@@ -576,8 +572,10 @@ public class ConnectedPlayer implements MinecraftConnectionAssociation, Player {
                           protocolVersion()), ((Impl) status).isSafe());
                       break;
                     case SUCCESS:
-                      sendMessage(Identity.nil(), server.configuration().getMessages()
+                      sendMessage(Component.translatable("velocity.error.moved-to-new-server",
-                          .getMovedToNewServerPrefix().append(friendlyReason));
+                          NamedTextColor.RED,
+                          Component.text(originalEvent.server().serverInfo().name()),
+                          friendlyReason));
                       break;
                     default:
                       // The only remaining value is successful (no need to do anything!)

proxy/src/main/java/com/velocitypowered/proxy/connection/client/HandshakeSessionHandler.java

@@ -70,7 +70,10 @@ public class HandshakeSessionHandler implements MinecraftSessionHandler {
   @Override
   public boolean handle(LegacyHandshakePacket packet) {
     connection.closeWith(LegacyDisconnectPacket
-        .from(Component.text("Your client is old, please upgrade!", NamedTextColor.RED)));
+        .from(Component.text(
+            "Your client is extremely old. Please update to a newer version of Minecraft.",
+            NamedTextColor.RED)
+        ));
     return true;
   }
 
@@ -122,7 +125,7 @@ public class HandshakeSessionHandler implements MinecraftSessionHandler {
 
     InetAddress address = ((InetSocketAddress) connection.getRemoteAddress()).getAddress();
     if (!server.getIpAttemptLimiter().attempt(address)) {
-      ic.disconnectQuietly(Component.text("You are logging in too fast, try again later."));
+      ic.disconnectQuietly(Component.translatable("velocity.error.logging-in-too-fast"));
       return;
     }
 
@@ -132,7 +135,8 @@ public class HandshakeSessionHandler implements MinecraftSessionHandler {
     // and lower, otherwise IP information will never get forwarded.
     if (server.configuration().getPlayerInfoForwardingMode() == PlayerInfoForwarding.MODERN
         && handshake.getProtocolVersion().lt(ProtocolVersion.MINECRAFT_1_13)) {
-      ic.disconnectQuietly(Component.text("This server is only compatible with 1.13 and above."));
+      ic.disconnectQuietly(Component.translatable(
+          "velocity.error.modern-forwarding-needs-new-client"));
       return;
     }
 

proxy/src/main/java/com/velocitypowered/proxy/connection/client/LoginSessionHandler.java

@@ -65,6 +65,7 @@ import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ThreadLocalRandom;
 import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
 import net.kyori.adventure.translation.GlobalTranslator;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -152,7 +153,8 @@ public class LoginSessionHandler implements MinecraftSessionHandler {
                 GameProfile.class), true);
           } else if (profileResponse.getStatusCode() == 204) {
             // Apparently an offline-mode user logged onto this online-mode proxy.
-            inbound.disconnect(server.configuration().getMessages().getOnlineModeOnly());
+            inbound.disconnect(Component.translatable("velocity.error.online-mode-only",
+                NamedTextColor.RED));
           } else {
             // Something else went wrong
             logger.error(
@@ -192,9 +194,7 @@ public class LoginSessionHandler implements MinecraftSessionHandler {
           Optional<Component> disconnectReason = result.denialReason();
           if (disconnectReason.isPresent()) {
             // The component is guaranteed to be provided if the connection was denied.
-            Component disconnectReasonTranslated = GlobalTranslator.render(disconnectReason.get(),
+            inbound.disconnect(disconnectReason.get());
-                Locale.getDefault());
-            inbound.disconnect(disconnectReasonTranslated);
             return;
           }
 
@@ -243,7 +243,8 @@ public class LoginSessionHandler implements MinecraftSessionHandler {
           mcConnection, inbound.connectedHost().orElse(null), onlineMode);
       this.connectedPlayer = player;
       if (!server.canRegisterConnection(player)) {
-        player.disconnect0(server.configuration().getMessages().getAlreadyConnected(), true);
+        player.disconnect0(Component.translatable("velocity.error.already-connected-proxy",
+            NamedTextColor.RED), true);
         return CompletableFuture.completedFuture(null);
       }
 
@@ -304,8 +305,8 @@ public class LoginSessionHandler implements MinecraftSessionHandler {
             player.disconnect0(reason.get(), true);
           } else {
             if (!server.registerConnection(player)) {
-              player.disconnect0(server.configuration().getMessages()
+              player.disconnect0(Component.translatable("velocity.error.already-connected-proxy"),
-                      .getAlreadyConnected(), true);
+                  true);
               return;
             }
 
@@ -333,8 +334,8 @@ public class LoginSessionHandler implements MinecraftSessionHandler {
         .thenRunAsync(() -> {
           Optional<RegisteredServer> toTry = event.initialServer();
           if (!toTry.isPresent()) {
-            player.disconnect0(server.configuration().getMessages()
+            player.disconnect0(Component.translatable("velocity.error.no-available-servers",
-                    .getNoAvailableServers(), true);
+                NamedTextColor.RED), true);
             return;
           }
           player.createConnectionRequest(toTry.get()).fireAndForget();

proxy/src/main/java/com/velocitypowered/proxy/connection/util/ConnectionMessages.java

@@ -19,16 +19,17 @@ package com.velocitypowered.proxy.connection.util;
 
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.TranslatableComponent;
 import net.kyori.adventure.text.format.NamedTextColor;
 
 public class ConnectionMessages {
 
-  public static final TextComponent ALREADY_CONNECTED = Component
+  public static final TranslatableComponent ALREADY_CONNECTED = Component
-      .text("You are already connected to this server!", NamedTextColor.RED);
+      .translatable("velocity.error.already-connected", NamedTextColor.RED);
-  public static final TextComponent IN_PROGRESS = Component
+  public static final TranslatableComponent IN_PROGRESS = Component
-      .text("You are already connecting to a server!", NamedTextColor.RED);
+      .translatable("velocity.error.already-connecting", NamedTextColor.RED);
-  public static final TextComponent INTERNAL_SERVER_CONNECTION_ERROR = Component
+  public static final TranslatableComponent INTERNAL_SERVER_CONNECTION_ERROR = Component
-      .text("An internal server connection error occurred.", NamedTextColor.RED);
+      .translatable("velocity.error.internal-server-connection-error", NamedTextColor.RED);
 
   private ConnectionMessages() {
     throw new AssertionError();

proxy/src/main/java/com/velocitypowered/proxy/console/VelocityConsole.java

@@ -26,9 +26,12 @@ import com.velocitypowered.api.permission.PermissionFunction;
 import com.velocitypowered.api.permission.Tristate;
 import com.velocitypowered.proxy.VelocityServer;
 import java.util.List;
+import java.util.Locale;
 import net.kyori.adventure.identity.Identity;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
+import net.kyori.adventure.translation.GlobalTranslator;
 import net.minecrell.terminalconsole.SimpleTerminalConsole;
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.LogManager;
@@ -52,8 +55,8 @@ public final class VelocityConsole extends SimpleTerminalConsole implements Cons
 
   @Override
   public void sendMessage(@NonNull Identity identity, @NonNull Component message) {
-    logger.info(net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection()
+    Component translated = GlobalTranslator.render(message, Locale.getDefault());
-        .serialize(message));
+    logger.info(LegacyComponentSerializer.legacySection().serialize(translated));
   }
 
   @Override
@@ -114,7 +117,8 @@ public final class VelocityConsole extends SimpleTerminalConsole implements Cons
   protected void runCommand(String command) {
     try {
       if (!this.server.commandManager().execute(this, command).join()) {
-        sendMessage(Component.text("Command not found.", NamedTextColor.RED));
+        sendMessage(Component.translatable("velocity.command.command-does-not-exist",
+            NamedTextColor.RED));
       }
     } catch (Exception e) {
       logger.error("An error occurred while running this command.", e);

proxy/src/main/resources/com/velocitypowered/proxy/messages.properties

@@ -0,0 +1,62 @@
+#
+# Copyright (C) 2018 Velocity Contributors
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+
+velocity.error.already-connected=You are already connected to this server!
+velocity.error.already-connected-proxy=You are already connected to this proxy!
+velocity.error.already-connecting=You are already trying to connect to a server!
+velocity.error.cant-connect=Unable to connect to {0}: {1}
+velocity.error.connecting-server-error=Unable to connect you to {0}. Please try again later.
+velocity.error.connected-server-error=Your connection to {0} encountered a problem.
+velocity.error.internal-server-connection-error=An internal server connection error occurred.
+velocity.error.logging-in-too-fast=You are logging in too fast, try again later.
+velocity.error.online-mode-only=You are not logged into your Minecraft account. If you are logged into your Minecraft account, try restarting your Minecraft client.
+velocity.error.player-connection-error=An internal error occurred in your connection.
+velocity.error.modern-forwarding-needs-new-client=This server is only compatible with Minecraft 1.13 and above.
+velocity.error.modern-forwarding-failed=Your server did not send a forwarding request to the proxy. Make sure the server is configured for Velocity forwarding.
+velocity.error.moved-to-new-server=YOu were kicked from {0}: {1}
+velocity.error.no-available-servers=There are no available servers to connect you to. Try again later or contact an admin.
+
+# Commands
+velocity.command.generic-error=An error occurred while running this command.
+velocity.command.command-does-not-exist=This command does not exist.
+
+velocity.command.players-only=Only players can run this command.
+velocity.command.server-does-not-exist=The specified server {0} does not exist.
+
+velocity.command.server-current-server=You are currently connected to {0}.
+velocity.command.server-too-many=There are too many servers set up. Use tab completion to get individual server counts.
+velocity.command.server-available=Available servers:
+velocity.command.server-tooltip-player-online={0} player online
+velocity.command.server-tooltip-players-online={0} players online
+velocity.command.server-tooltip-current-server=Currently connected to this server
+velocity.command.server-tooltip-offer-connect-server=Click to connect to this server
+
+velocity.command.glist-player-singular=player
+velocity.command.glist-player-plural=players
+velocity.command.glist-total-suffix= are currently connected to the proxy.
+velocity.command.glist-view-all=To view all players on servers, use /glist all.
+
+velocity.command.reload-success=Velocity configuration successfully reloaded.
+velocity.command.reload-failure=Unable to reload your Velocity configuration. Check the console for more details.
+
+velocity.command.version-copyright=Copyright 2018-2021 {0}. {1} is licensed under the terms of the GNU General Public License v3.
+
+velocity.command.no-plugins=There are no plugins currently installed.
+velocity.command.plugins-list=Plugins: {0}
+velocity.command.plugin-tooltip-website=Website: {0}
+velocity.command.plugin-tooltip-author=Author: {0}
+velocity.command.plugin-tooltip-authors=Authors: {0}

proxy/src/main/resources/default-velocity.toml

@@ -141,20 +141,4 @@ port = 25577
 map = "Velocity"
 
 # Whether plugins should be shown in query response by default or not
-show-plugins = false
+show-plugins = false
-
-# Legacy color codes and JSON are accepted in all messages.
-[messages]
-# Prefix when the player gets kicked from a server.
-#   First argument '%s': the server name
-kick-prefix = "&cKicked from %s: "
-
-# Prefix when the player is disconnected from a server.
-#   First argument '%s': the server name
-disconnect-prefix = "&cCan't connect to %s: "
-
-online-mode-only = "&cThis server only accepts connections from online-mode clients.\n\n&7Did you change your username? Sign out of Minecraft, sign back in, and try again."
-no-available-servers = "&cThere are no available servers."
-already-connected = "&cYou are already connected to this proxy!"
-moved-to-new-server-prefix = "&cThe server you were on kicked you: "
-generic-connection-error = "&cAn internal error occurred in your connection."