[BREAKING] support new dispatch server mechanism

build.gradle

@@ -10,14 +10,14 @@ sourceCompatibility = 17
 targetCompatibility = 17
 
 group 'me.exzork.gcauth'
-version '1.0-SNAPSHOT'
+version '2.0.0'
 
 repositories {
     mavenCentral()
 }
 
 dependencies {
-    implementation group: 'tech.xigam', name: 'grasscutter', version: '1.0.2-dev'
+    implementation files('lib/grasscutter-1.0.3-dev.jar')
     implementation 'org.springframework.security:spring-security-crypto:5.6.3'
     implementation 'commons-logging:commons-logging:1.2'
     implementation 'com.auth0:java-jwt:3.19.1'

src/main/java/me/exzork/gcauth/GCAuth.java

@@ -2,10 +2,24 @@ package me.exzork.gcauth;
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
-import com.sun.net.httpserver.HttpServer;
 import emu.grasscutter.Grasscutter;
+import emu.grasscutter.database.DatabaseHelper;
+import emu.grasscutter.game.Account;
+import emu.grasscutter.net.proto.QueryCurrRegionHttpRspOuterClass;
 import emu.grasscutter.plugin.Plugin;
+import emu.grasscutter.server.dispatch.DispatchHttpJsonHandler;
+import emu.grasscutter.server.dispatch.json.ComboTokenReqJson;
+import emu.grasscutter.server.dispatch.json.ComboTokenResJson;
+import emu.grasscutter.server.dispatch.json.LoginResultJson;
+import emu.grasscutter.server.dispatch.json.LoginTokenRequestJson;
+import emu.grasscutter.server.event.dispatch.QueryAllRegionsEvent;
+import emu.grasscutter.server.event.dispatch.QueryCurrentRegionEvent;
+import express.Express;
 import me.exzork.gcauth.handler.*;
+import org.eclipse.jetty.server.Connector;
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.ServerConnector;
+import org.eclipse.jetty.util.ssl.SslContextFactory;
 
 import java.io.File;
 import java.io.FileReader;
@@ -13,6 +27,7 @@ import java.io.FileWriter;
 import java.io.IOException;
 import java.nio.file.Files;
 
+
 public class GCAuth extends Plugin {
     private static Config config;
     private static final File configFile = new File(Grasscutter.getConfig().PLUGINS_FOLDER+"GCAuth/config.json");
@@ -31,13 +46,234 @@ public class GCAuth extends Plugin {
 
     @Override
     public void onEnable() {
-        HttpServer server = Grasscutter.getDispatchServer().getServer();
+
-        server.createContext("/grasscutter/auth_status",new AuthStatusHandler());
+        Express httpServer = new Express(config -> {
-        server.createContext("/grasscutter/login", new LoginHandler());
+            config.server(() -> {
-        server.createContext("/grasscutter/register", new RegisterHandler());
+                Server server = new Server();
-        server.createContext("/grasscutter/change_password", new ChangePasswordHandler());
+                ServerConnector serverConnector;
-        server.removeContext("/hk4e_global/mdk/shield/api/login");
+
-        server.createContext("/hk4e_global/mdk/shield/api/login", new ClientLoginHandler());
+                if(Grasscutter.getConfig().getDispatchOptions().UseSSL) {
+                    SslContextFactory.Server sslContextFactory = new SslContextFactory.Server();
+                    File keystoreFile = new File(Grasscutter.getConfig().getDispatchOptions().KeystorePath);
+
+                    if(keystoreFile.exists()) {
+                        try {
+                            sslContextFactory.setKeyStorePath(keystoreFile.getPath());
+                            sslContextFactory.setKeyStorePassword(Grasscutter.getConfig().getDispatchOptions().KeystorePassword);
+                        } catch (Exception e) {
+                            e.printStackTrace();
+                            Grasscutter.getLogger().warn("[Dispatch] Unable to load keystore. Trying default keystore password...");
+
+                            try {
+                                sslContextFactory.setKeyStorePath(keystoreFile.getPath());
+                                sslContextFactory.setKeyStorePassword("123456");
+                                Grasscutter.getLogger().warn("[Dispatch] The default keystore password was loaded successfully. Please consider setting the password to 123456 in config.json.");
+                            } catch (Exception e2) {
+                                Grasscutter.getLogger().warn("[Dispatch] Error while loading keystore!");
+                                e2.printStackTrace();
+                            }
+                        }
+
+                        serverConnector = new ServerConnector(server, sslContextFactory);
+                    } else {
+                        Grasscutter.getLogger().warn("[Dispatch] No SSL cert found! Falling back to HTTP server.");
+                        Grasscutter.getConfig().getDispatchOptions().UseSSL = false;
+
+                        serverConnector = new ServerConnector(server);
+                    }
+                } else {
+                    serverConnector = new ServerConnector(server);
+                }
+
+                serverConnector.setPort(Grasscutter.getConfig().getDispatchOptions().Port);
+                server.setConnectors(new Connector[]{serverConnector});
+                return server;
+            });
+
+            config.enforceSsl = Grasscutter.getConfig().getDispatchOptions().UseSSL;
+            if(Grasscutter.getConfig().DebugMode.equalsIgnoreCase("ALL")) {
+                config.enableDevLogging();
+            }
+        });
+
+        httpServer.get("/grasscutter/auth_status",new AuthStatusHandler());
+        httpServer.post("/grasscutter/login", new LoginHandler());
+        httpServer.post("/grasscutter/register", new RegisterHandler());
+        httpServer.post("/grasscutter/change_password", new ChangePasswordHandler());
+        httpServer.post("/hk4e_global/mdk/shield/api/login", new ClientLoginHandler());
+
+        httpServer.get("/", (req, res) -> res.send("Welcome to Grasscutter"));
+
+        httpServer.raw().error(404, ctx -> {
+            if(Grasscutter.getConfig().DebugMode.equalsIgnoreCase("MISSING")) {
+                Grasscutter.getLogger().info(String.format("[Dispatch] Potential unhandled %s request: %s", ctx.method(), ctx.url()));
+            }
+            ctx.contentType("text/html");
+            ctx.result("<!doctype html><html lang=\"en\"><body><img src=\"https://http.cat/404\" /></body></html>"); // I'm like 70% sure this won't break anything.
+        });
+
+        // Dispatch
+        httpServer.get("/query_region_list", (req, res) -> {
+            // Log
+            Grasscutter.getLogger().info(String.format("[Dispatch] Client %s request: query_region_list", req.ip()));
+
+            // Invoke event.
+            QueryAllRegionsEvent event = new QueryAllRegionsEvent(Grasscutter.getDispatchServer().regionListBase64); event.call();
+            // Respond with event result.
+            res.send(event.getRegionList());
+        });
+
+        httpServer.get("/query_cur_region/:id", (req, res) -> {
+            String regionName = req.params("id");
+            // Log
+            Grasscutter.getLogger().info(
+                    String.format("Client %s request: query_cur_region/%s", req.ip(), regionName));
+            // Create a response form the request query parameters
+            String response = "CAESGE5vdCBGb3VuZCB2ZXJzaW9uIGNvbmZpZw==";
+            if (req.query().values().size() > 0) {
+                response = Grasscutter.getDispatchServer().regions.get(regionName).getBase64();
+            }
+
+            // Invoke event.
+            QueryCurrentRegionEvent event = new QueryCurrentRegionEvent(response); event.call();
+            // Respond with event result.
+            res.send(event.getRegionInfo());
+        });
+
+
+        // Login via token
+        httpServer.post("/hk4e_global/mdk/shield/api/verify", (req, res) -> {
+            // Get post data
+            LoginTokenRequestJson requestData = null;
+            try {
+                String body = req.ctx().body();
+                requestData = Grasscutter.getGsonFactory().fromJson(body, LoginTokenRequestJson.class);
+            } catch (Exception ignored) {
+            }
+
+            // Create response json
+            if (requestData == null) {
+                return;
+            }
+            LoginResultJson responseData = new LoginResultJson();
+            Grasscutter.getLogger().info(String.format("[Dispatch] Client %s is trying to log in via token", req.ip()));
+
+            // Login
+            Account account = DatabaseHelper.getAccountById(requestData.uid);
+
+            // Test
+            if (account == null || !account.getSessionKey().equals(requestData.token)) {
+                responseData.retcode = -111;
+                responseData.message = "Game account cache information error";
+
+                Grasscutter.getLogger()
+                        .info(String.format("[Dispatch] Client %s failed to log in via token", req.ip()));
+            } else {
+                responseData.message = "OK";
+                responseData.data.account.uid = requestData.uid;
+                responseData.data.account.token = requestData.token;
+                responseData.data.account.email = account.getEmail();
+
+                Grasscutter.getLogger().info(String.format("[Dispatch] Client %s logged in via token as %s",
+                        req.ip(), responseData.data.account.uid));
+            }
+
+            res.send(responseData);
+        });
+
+        // Exchange for combo token
+        httpServer.post("/hk4e_global/combo/granter/login/v2/login", (req, res) -> {
+            // Get post data
+            ComboTokenReqJson requestData = null;
+            try {
+                String body = req.ctx().body();
+                requestData = Grasscutter.getGsonFactory().fromJson(body, ComboTokenReqJson.class);
+            } catch (Exception ignored) {
+            }
+
+            // Create response json
+            if (requestData == null || requestData.data == null) {
+                return;
+            }
+            ComboTokenReqJson.LoginTokenData loginData = Grasscutter.getGsonFactory().fromJson(requestData.data, ComboTokenReqJson.LoginTokenData.class); // Get login
+            // data
+            ComboTokenResJson responseData = new ComboTokenResJson();
+
+            // Login
+            Account account = DatabaseHelper.getAccountById(loginData.uid);
+
+            // Test
+            if (account == null || !account.getSessionKey().equals(loginData.token)) {
+                responseData.retcode = -201;
+                responseData.message = "Wrong session key.";
+
+                Grasscutter.getLogger().info(
+                        String.format("[Dispatch] Client %s failed to exchange combo token", req.ip()));
+            } else {
+                responseData.message = "OK";
+                responseData.data.open_id = loginData.uid;
+                responseData.data.combo_id = "157795300";
+                responseData.data.combo_token = account.generateLoginToken();
+
+                Grasscutter.getLogger().info(
+                        String.format("[Dispatch] Client %s succeed to exchange combo token", req.ip()));
+            }
+
+            res.send(responseData);
+        });
+
+        // TODO: There are some missing route request types here (You can tell if they are missing if they are .all and not anything else)
+        //  When http requests for theses routes are found please remove it from the list in DispatchHttpJsonHandler and update the route request types here
+
+        // Agreement and Protocol
+        // hk4e-sdk-os.hoyoverse.com
+        httpServer.get("/hk4e_global/mdk/agreement/api/getAgreementInfos", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"marketing_agreements\":[]}}"));
+        // hk4e-sdk-os.hoyoverse.com
+        httpServer.post("/hk4e_global/combo/granter/api/compareProtocolVersion", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"modified\":true,\"protocol\":{\"id\":0,\"app_id\":4,\"language\":\"en\",\"user_proto\":\"\",\"priv_proto\":\"\",\"major\":7,\"minimum\":0,\"create_time\":\"0\",\"teenager_proto\":\"\",\"third_proto\":\"\"}}}"));
+
+        // Game data
+        // hk4e-api-os.hoyoverse.com
+        httpServer.all("/common/hk4e_global/announcement/api/getAlertPic", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"total\":0,\"list\":[]}}"));
+        // hk4e-api-os.hoyoverse.com
+        httpServer.all("/common/hk4e_global/announcement/api/getAlertAnn", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"alert\":false,\"alert_id\":0,\"remind\":true}}"));
+        // hk4e-api-os.hoyoverse.com
+        httpServer.all("/common/hk4e_global/announcement/api/getAnnList", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"list\":[],\"total\":0,\"type_list\":[],\"alert\":false,\"alert_id\":0,\"timezone\":0,\"t\":\"" + System.currentTimeMillis() + "\"}}"));
+        // hk4e-api-os-static.hoyoverse.com
+        httpServer.all("/common/hk4e_global/announcement/api/getAnnContent", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"list\":[],\"total\":0}}"));
+        // hk4e-sdk-os.hoyoverse.com
+        httpServer.all("/hk4e_global/mdk/shopwindow/shopwindow/listPriceTier", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"suggest_currency\":\"USD\",\"tiers\":[]}}"));
+
+        // Captcha
+        // api-account-os.hoyoverse.com
+        httpServer.post("/account/risky/api/check", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"id\":\"none\",\"action\":\"ACTION_NONE\",\"geetest\":null}}"));
+
+        // Config
+        // sdk-os-static.hoyoverse.com
+        httpServer.get("/combo/box/api/config/sdk/combo", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"vals\":{\"disable_email_bind_skip\":\"false\",\"email_bind_remind_interval\":\"7\",\"email_bind_remind\":\"true\"}}}"));
+        // hk4e-sdk-os-static.hoyoverse.com
+        httpServer.get("/hk4e_global/combo/granter/api/getConfig", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"protocol\":true,\"qr_enabled\":false,\"log_level\":\"INFO\",\"announce_url\":\"https://webstatic-sea.hoyoverse.com/hk4e/announcement/index.html?sdk_presentation_style=fullscreen\\u0026sdk_screen_transparent=true\\u0026game_biz=hk4e_global\\u0026auth_appid=announcement\\u0026game=hk4e#/\",\"push_alias_type\":2,\"disable_ysdk_guard\":false,\"enable_announce_pic_popup\":true}}"));
+        // hk4e-sdk-os-static.hoyoverse.com
+        httpServer.get("/hk4e_global/mdk/shield/api/loadConfig", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"id\":6,\"game_key\":\"hk4e_global\",\"client\":\"PC\",\"identity\":\"I_IDENTITY\",\"guest\":false,\"ignore_versions\":\"\",\"scene\":\"S_NORMAL\",\"name\":\"原神海外\",\"disable_regist\":false,\"enable_email_captcha\":false,\"thirdparty\":[\"fb\",\"tw\"],\"disable_mmt\":false,\"server_guest\":false,\"thirdparty_ignore\":{\"tw\":\"\",\"fb\":\"\"},\"enable_ps_bind_account\":false,\"thirdparty_login_configs\":{\"tw\":{\"token_type\":\"TK_GAME_TOKEN\",\"game_token_expires_in\":604800},\"fb\":{\"token_type\":\"TK_GAME_TOKEN\",\"game_token_expires_in\":604800}}}}"));
+        // Test api?
+        // abtest-api-data-sg.hoyoverse.com
+        httpServer.post("/data_abtest_api/config/experiment/list", new DispatchHttpJsonHandler("{\"retcode\":0,\"success\":true,\"message\":\"\",\"data\":[{\"code\":1000,\"type\":2,\"config_id\":\"14\",\"period_id\":\"6036_99\",\"version\":\"1\",\"configs\":{\"cardType\":\"old\"}}]}"));
+
+        // log-upload-os.mihoyo.com
+        httpServer.all("/log/sdk/upload", new DispatchHttpJsonHandler("{\"code\":0}"));
+        httpServer.all("/sdk/upload", new DispatchHttpJsonHandler("{\"code\":0}"));
+        httpServer.post("/sdk/dataUpload", new DispatchHttpJsonHandler("{\"code\":0}"));
+        // /perf/config/verify?device_id=xxx&platform=x&name=xxx
+        httpServer.all("/perf/config/verify", new DispatchHttpJsonHandler("{\"code\":0}"));
+
+        // Logging servers
+        // overseauspider.yuanshen.com
+        httpServer.all("/log", new DispatchHttpJsonHandler("{\"code\":0}"));
+        // log-upload-os.mihoyo.com
+        httpServer.all("/crash/dataUpload", new DispatchHttpJsonHandler("{\"code\":0}"));
+
+        httpServer.get("/gacha", (req, res) -> res.send("<!doctype html><html lang=\"en\"><head><title>Gacha</title></head><body></body></html>"));
+
+        Grasscutter.getDispatchServer().setHttpServer(httpServer);
     }
 
     @Override
@@ -63,5 +299,15 @@ public class GCAuth extends Plugin {
         }
     }
 
+
+    public static class RegionData {
+        QueryCurrRegionHttpRspOuterClass.QueryCurrRegionHttpRsp parsedRegionQuery;
+        String Base64;
+
+        public RegionData(QueryCurrRegionHttpRspOuterClass.QueryCurrRegionHttpRsp prq, String b64) {
+            this.parsedRegionQuery = prq;
+            this.Base64 = b64;
+        }
+    }
     public static Config getConfig() {return config;}
 }

src/main/java/me/exzork/gcauth/handler/AbstractHandler.java

@@ -1,23 +0,0 @@
-package me.exzork.gcauth.handler;
-
-import com.sun.net.httpserver.HttpExchange;
-import com.sun.net.httpserver.HttpHandler;
-import emu.grasscutter.Grasscutter;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.Collections;
-
-public abstract class AbstractHandler implements HttpHandler {
-    void responseJSON(HttpExchange t, Object data) throws IOException {
-        // Create a response
-        String response = Grasscutter.getGsonFactory().toJson(data);
-        // Set the response header status and length
-        t.getResponseHeaders().put("Content-Type", Collections.singletonList("application/json"));
-        t.sendResponseHeaders(200, response.getBytes().length);
-        // Write the response string
-        OutputStream os = t.getResponseBody();
-        os.write(response.getBytes());
-        os.close();
-    }
-}

src/main/java/me/exzork/gcauth/handler/AuthStatusHandler.java

@@ -1,18 +1,20 @@
 package me.exzork.gcauth.handler;
 
-import com.sun.net.httpserver.HttpExchange;
+import express.http.HttpContextHandler;
+import express.http.Request;
+import express.http.Response;
 import me.exzork.gcauth.GCAuth;
 import me.exzork.gcauth.json.AuthResponseJson;
 
 import java.io.IOException;
 
-public class AuthStatusHandler extends AbstractHandler{
+public class AuthStatusHandler implements HttpContextHandler {
     @Override
-    public void handle(HttpExchange t) throws IOException {
+    public void handle(Request request, Response response) throws IOException {
         AuthResponseJson authResponse = new AuthResponseJson();
         authResponse.success = true;
         authResponse.message = GCAuth.getConfig().Enable ? "AUTH_ENABLED" : "AUTH_DISABLED";
         authResponse.jwt = "";
-        responseJSON(t, authResponse);
+        response.send(authResponse);
     }
 }

src/main/java/me/exzork/gcauth/handler/ChangePasswordHandler.java

@@ -1,10 +1,11 @@
 package me.exzork.gcauth.handler;
 
 import com.google.gson.Gson;
-import com.sun.net.httpserver.HttpExchange;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.game.Account;
-import emu.grasscutter.utils.Utils;
+import express.http.HttpContextHandler;
+import express.http.Request;
+import express.http.Response;
 import me.exzork.gcauth.GCAuth;
 import me.exzork.gcauth.json.AuthResponseJson;
 import me.exzork.gcauth.json.ChangePasswordAccount;
@@ -12,14 +13,14 @@ import me.exzork.gcauth.utils.Authentication;
 
 import java.io.IOException;
 
-public class ChangePasswordHandler extends AbstractHandler{
+public class ChangePasswordHandler implements HttpContextHandler {
     @Override
-    public void handle(HttpExchange t) throws IOException {
+    public void handle(Request request, Response response) throws IOException {
         AuthResponseJson authResponse = new AuthResponseJson();
 
         if (GCAuth.getConfig().Enable) {
             try {
-                String requestBody = Utils.toString(t.getRequestBody());
+                String requestBody = request.ctx().body();
                 if (requestBody.isEmpty()) {
                     authResponse.success = false;
                     authResponse.message = "EMPTY_BODY"; // ENG = "No data was sent with the request"
@@ -51,14 +52,13 @@ public class ChangePasswordHandler extends AbstractHandler{
                 authResponse.jwt = "";
                 Grasscutter.getLogger().error("[Dispatch] Error while changing user password.");
                 e.printStackTrace();
-                responseJSON(t, authResponse);
+                response.send(authResponse);
             }
         } else {
             authResponse.success = false;
             authResponse.message = "AUTH_DISABLED"; // ENG = "Authentication is not required for this server..."
             authResponse.jwt = "";
         }
-
+        response.send(authResponse);
-        responseJSON(t, authResponse);
     }
 }

src/main/java/me/exzork/gcauth/handler/ClientLoginHandler.java

@@ -1,24 +1,26 @@
 package me.exzork.gcauth.handler;
 
-import com.sun.net.httpserver.HttpExchange;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.database.DatabaseHelper;
 import emu.grasscutter.game.Account;
 import emu.grasscutter.server.dispatch.json.LoginAccountRequestJson;
 import emu.grasscutter.server.dispatch.json.LoginResultJson;
-import emu.grasscutter.utils.Utils;
+import express.http.HttpContextHandler;
+import express.http.Request;
+import express.http.Response;
 import me.exzork.gcauth.GCAuth;
 import me.exzork.gcauth.utils.Authentication;
 
 import java.io.IOException;
 
-public class ClientLoginHandler extends AbstractHandler{
+public class ClientLoginHandler implements HttpContextHandler {
 
     @Override
-    public void handle(HttpExchange t) throws IOException {
+    public void handle(Request request, Response response) throws IOException {
         LoginAccountRequestJson requestData = null;
         try {
-            String body = Utils.toString(t.getRequestBody());
+            String body = request.ctx().body();
+            Grasscutter.getLogger().info("Received login request: " + body);
             requestData = Grasscutter.getGsonFactory().fromJson(body, LoginAccountRequestJson.class);
         } catch (Exception ignored) {
         }
@@ -30,18 +32,18 @@ public class ClientLoginHandler extends AbstractHandler{
         LoginResultJson responseData = new LoginResultJson();
 
         Grasscutter.getLogger()
-                .info(String.format("[Dispatch] Client %s is trying to log in", t.getRemoteAddress()));
+                .info(String.format("[Dispatch] Client %s is trying to log in", request.ip()));
 
         // Login
         Account account = null;
         if(GCAuth.getConfig().Enable){
             account = Authentication.getAccountByOneTimeToken(requestData.account);
             if(account == null) {
+                Grasscutter.getLogger().info("[Dispatch] Client " + request.ip() + " failed to log in");
                 responseData.retcode = -201;
                 responseData.message = "Token is invalid";
-                responseJSON(t, responseData);
+                response.send(responseData);
             }
-            ;
         }else{
             account = DatabaseHelper.getAccountByName(requestData.account);
         }
@@ -55,6 +57,10 @@ public class ClientLoginHandler extends AbstractHandler{
                 // added.
                 account = DatabaseHelper.createAccountWithId(requestData.account, 0);
 
+                for (String permission : Grasscutter.getConfig().getDispatchOptions().defaultPermissions) {
+                    account.addPermission(permission);
+                }
+
                 if (account != null) {
                     responseData.message = "OK";
                     responseData.data.account.uid = account.getId();
@@ -63,20 +69,20 @@ public class ClientLoginHandler extends AbstractHandler{
 
                     Grasscutter.getLogger()
                             .info(String.format("[Dispatch] Client %s failed to log in: Account %s created",
-                                    t.getRemoteAddress(), responseData.data.account.uid));
+                                    request.ip(), responseData.data.account.uid));
                 } else {
                     responseData.retcode = -201;
                     responseData.message = "Username not found, create failed.";
 
                     Grasscutter.getLogger().info(String.format(
-                            "[Dispatch] Client %s failed to log in: Account create failed", t.getRemoteAddress()));
+                            "[Dispatch] Client %s failed to log in: Account create failed", request.ip()));
                 }
             } else {
                 responseData.retcode = -201;
                 responseData.message = "Username not found.";
 
                 Grasscutter.getLogger().info(String
-                        .format("[Dispatch] Client %s failed to log in: Account no found", t.getRemoteAddress()));
+                        .format("[Dispatch] Client %s failed to log in: Account no found", request.ip()));
             }
         } else {
             // Account was found, log the player in
@@ -85,10 +91,10 @@ public class ClientLoginHandler extends AbstractHandler{
             responseData.data.account.token = account.generateSessionKey();
             responseData.data.account.email = account.getEmail();
 
-            Grasscutter.getLogger().info(String.format("[Dispatch] Client %s logged in as %s", t.getRemoteAddress(),
+            Grasscutter.getLogger().info(String.format("[Dispatch] Client %s logged in as %s", request.ip(),
                     responseData.data.account.uid));
         }
 
-        responseJSON(t, responseData);
+        response.send(responseData);
     }
 }

src/main/java/me/exzork/gcauth/handler/LoginHandler.java

@@ -1,10 +1,11 @@
 package me.exzork.gcauth.handler;
 
 import com.google.gson.Gson;
-import com.sun.net.httpserver.HttpExchange;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.game.Account;
-import emu.grasscutter.utils.Utils;
+import express.http.HttpContextHandler;
+import express.http.Request;
+import express.http.Response;
 import me.exzork.gcauth.GCAuth;
 import me.exzork.gcauth.json.AuthResponseJson;
 import me.exzork.gcauth.json.LoginGenerateToken;
@@ -12,14 +13,14 @@ import me.exzork.gcauth.utils.Authentication;
 
 import java.io.IOException;
 
-public class LoginHandler extends AbstractHandler{
+public class LoginHandler implements HttpContextHandler {
     @Override
-    public void handle(HttpExchange t) throws IOException {
+    public void handle(Request request, Response response) throws IOException {
         AuthResponseJson authResponse = new AuthResponseJson();
 
         if (GCAuth.getConfig().Enable) {
             try {
-                String requestBody = Utils.toString(t.getRequestBody());
+                String requestBody = request.ctx().body();
                 if (requestBody.isEmpty()) {
                     authResponse.success = false;
                     authResponse.message = "EMPTY_BODY"; // ENG = "No data was sent with the request"
@@ -55,7 +56,6 @@ public class LoginHandler extends AbstractHandler{
             authResponse.message = "AUTH_DISABLED"; // ENG = "Authentication is not required for this server..."
             authResponse.jwt = "";
         }
-
+        response.send(authResponse);
-        responseJSON(t, authResponse);
     }
 }

src/main/java/me/exzork/gcauth/handler/RegisterHandler.java

@@ -1,11 +1,12 @@
 package me.exzork.gcauth.handler;
 
 import com.google.gson.Gson;
-import com.sun.net.httpserver.HttpExchange;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.database.DatabaseHelper;
 import emu.grasscutter.game.Account;
-import emu.grasscutter.utils.Utils;
+import express.http.HttpContextHandler;
+import express.http.Request;
+import express.http.Response;
 import me.exzork.gcauth.GCAuth;
 import me.exzork.gcauth.json.AuthResponseJson;
 import me.exzork.gcauth.json.RegisterAccount;
@@ -13,14 +14,14 @@ import me.exzork.gcauth.utils.Authentication;
 
 import java.io.IOException;
 
-public class RegisterHandler extends AbstractHandler{
+public class RegisterHandler implements HttpContextHandler {
     @Override
-    public void handle(HttpExchange t) throws IOException {
+    public void handle(Request request, Response response) throws IOException {
         AuthResponseJson authResponse = new AuthResponseJson();
 
         if (GCAuth.getConfig().Enable) {
             try {
-                String requestBody = Utils.toString(t.getRequestBody());
+                String requestBody = request.ctx().body();
                 if (requestBody.isEmpty()) {
                     authResponse.success = false;
                     authResponse.message = "EMPTY_BODY"; // ENG = "No data was sent with the request"
@@ -57,7 +58,6 @@ public class RegisterHandler extends AbstractHandler{
             authResponse.message = "AUTH_DISABLED"; // ENG = "Authentication is not required for this server..."
             authResponse.jwt = "";
         }
-
+        response.send(authResponse);
-        responseJSON(t, authResponse);
     }
 }