diff --git a/package-lock.json b/package-lock.json
index b43b1c6..52e957f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "colyseus.js",
-  "version": "0.16.14",
+  "version": "0.16.15",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "colyseus.js",
-      "version": "0.16.14",
+      "version": "0.16.15",
       "license": "MIT",
       "dependencies": {
         "@colyseus/msgpackr": "^1.10.5",
diff --git a/src/Client.ts b/src/Client.ts
index 94b7d9e..697a10a 100644
--- a/src/Client.ts
+++ b/src/Client.ts
@@ -1,10 +1,10 @@
+import { discordURLBuilder } from './3rd_party/discord';
+import { Auth } from './Auth';
 import { ServerError } from './errors/ServerError';
-import { Room } from './Room';
-import { SchemaConstructor } from './serializer/SchemaSerializer';
 import { HTTP } from "./HTTP";
-import { Auth } from './Auth';
 import { SeatReservation } from './Protocol';
-import { discordURLBuilder } from './3rd_party/discord';
+import { Room, splitURL } from './Room';
+import { SchemaConstructor } from './serializer/SchemaSerializer';
 
 export type JoinOptions = any;
 
@@ -33,7 +33,7 @@ export interface EndpointSettings {
 
 export interface ClientOptions {
     headers?: { [id: string]: string };
-    urlBuilder?: (url: URL) => string;
+    urlBuilder?: (url: URL | ReturnType<typeof splitURL>) => string;
 }
 
 export class Client {
@@ -43,7 +43,7 @@ export class Client {
     public auth: Auth;
 
     protected settings: EndpointSettings;
-    protected urlBuilder: (url: URL) => string;
+    protected urlBuilder: (url: URL | ReturnType<typeof splitURL>) => string;
 
     constructor(
         settings: string | EndpointSettings = DEFAULT_ENDPOINT,
@@ -55,8 +55,8 @@ export class Client {
             // endpoint by url
             //
             const url = (settings.startsWith("/"))
-                ? new URL(settings, DEFAULT_ENDPOINT)
-                : new URL(settings);
+                ? splitURL(settings, DEFAULT_ENDPOINT)
+                : splitURL(settings);
 
             const secure = (url.protocol === "https:" || url.protocol === "wss:");
             const port = Number(url.port || (secure ? 443 : 80));
@@ -254,7 +254,7 @@ export class Client {
 
         const endpointURL = `${endpoint}/${room.processId}/${room.roomId}?${params.join('&')}`;
         return (this.urlBuilder)
-            ? this.urlBuilder(new URL(endpointURL))
+            ? this.urlBuilder(splitURL(endpointURL))
             : endpointURL;
     }
 
@@ -262,7 +262,7 @@ export class Client {
         const path = segments.startsWith("/") ? segments : `/${segments}`;
         const endpointURL = `${(this.settings.secure) ? "https" : "http"}://${this.settings.hostname}${this.getEndpointPort()}${this.settings.pathname}${path}`;
         return (this.urlBuilder)
-            ? this.urlBuilder(new URL(endpointURL))
+            ? this.urlBuilder(splitURL(endpointURL))
             : endpointURL;
     }
 
diff --git a/src/Room.ts b/src/Room.ts
index b532f95..3644cce 100644
--- a/src/Room.ts
+++ b/src/Room.ts
@@ -8,11 +8,57 @@ import { createNanoEvents } from './core/nanoevents';
 import { createSignal } from './core/signal';
 
 import { decode, encode, Iterator } from '@colyseus/schema';
-import { SchemaConstructor, SchemaSerializer } from './serializer/SchemaSerializer';
 import { CloseCode } from './errors/ServerError';
+import { SchemaConstructor, SchemaSerializer } from './serializer/SchemaSerializer';
 
 import { Packr, unpack } from '@colyseus/msgpackr';
 
+export function splitURL(url: string, base?: string) {
+    // 检查 URL 是否为空或非字符串
+    if (!url || typeof url !== 'string') {
+        throw new Error("URL must be a non-empty string");
+    }
+
+    // 尝试使用全局 URL 构造函数
+    if (typeof globalThis !== 'undefined' && globalThis.URL) {
+        try {
+            return base ? new URL(url, base) : new URL(url);
+        } catch (e) {
+            // URL 构造函数可能会因为无效 URL 抛出错误
+            // 继续使用备选方案
+        }
+    }
+
+    // 如果有基础 URL 且 url 是相对路径，先进行合并
+    if (base && url.startsWith('/')) {
+        // 简单合并，可能需要更复杂的逻辑来处理各种情况
+        let baseUrl = base;
+        if (baseUrl.endsWith('/')) {
+            baseUrl = baseUrl.slice(0, -1);
+        }
+        url = baseUrl + url;
+    }
+
+    // 备选方案：使用正则表达式解析 URL
+    var urlPattern = /^(?:([A-Za-z]+):)?(?:\/\/)?(?:([0-9.\-A-Za-z]+)(?::(\d+))?)?(\/[^?#]*)?(?:\?([^#]*))?(?:#(.*))?$/;
+    var matches = url.match(urlPattern);
+    if (!matches) {
+        throw new Error("Invalid URL");
+    }
+    
+    return {
+        protocol: matches[1] ? matches[1] + ":" : "",
+        hostname: matches[2] || "",
+        port: matches[3] || "",
+        pathname: matches[4] || "/",
+        search: matches[5] ? "?" + matches[5] : "",
+        hash: matches[6] ? "#" + matches[6] : "",
+        href: url,
+        origin: (matches[1] ? matches[1] + "://" : "//") + (matches[2] || "") + (matches[3] ? ":" + matches[3] : "")
+    };
+}
+
+
 export interface RoomAvailable<Metadata = any> {
     name: string;
     roomId: string;
@@ -21,7 +67,7 @@ export interface RoomAvailable<Metadata = any> {
     metadata?: Metadata;
 }
 
-export class Room<State= any> {
+export class Room<State = any> {
     public roomId: string;
     public sessionId: string;
     public reconnectionToken: string;
@@ -97,7 +143,7 @@ export class Room<State= any> {
 
         // FIXME: refactor this.
         if (options.protocol === "h3") {
-            const url = new URL(endpoint);
+            const url = splitURL(endpoint);
             connection.connect(url.origin, options);
 
         } else {
@@ -135,7 +181,7 @@ export class Room<State= any> {
         const it: Iterator = { offset: 1 };
         this.packr.buffer[0] = Protocol.ROOM_DATA;
 
-        if (typeof(type) === "string") {
+        if (typeof (type) === "string") {
             encode.string(this.packr.buffer, type, it);
 
         } else {
@@ -156,7 +202,7 @@ export class Room<State= any> {
         const it: Iterator = { offset: 1 };
         this.packr.buffer[0] = Protocol.ROOM_DATA;
 
-        if (typeof(type) === "string") {
+        if (typeof (type) === "string") {
             encode.string(this.packr.buffer, type, it);
 
         } else {
@@ -177,7 +223,7 @@ export class Room<State= any> {
         const it: Iterator = { offset: 1 };
         this.packr.buffer[0] = Protocol.ROOM_DATA_BYTES;
 
-        if (typeof(type) === "string") {
+        if (typeof (type) === "string") {
             encode.string(this.packr.buffer, type, it);
 
         } else {
@@ -196,7 +242,7 @@ export class Room<State= any> {
         this.connection.send(this.packr.buffer.subarray(0, it.offset + bytes.byteLength));
     }
 
-    public get state (): State {
+    public get state(): State {
         return this.serializer.getState();
     }
 
@@ -293,14 +339,14 @@ export class Room<State= any> {
         }
     }
 
-    private destroy () {
+    private destroy() {
         if (this.serializer) {
             this.serializer.teardown();
         }
     }
 
     private getMessageHandlerKey(type: string | number): string {
-        switch (typeof(type)) {
+        switch (typeof (type)) {
             // string
             case "string": return type;
 
diff --git a/src/transport/WebSocketTransport.ts b/src/transport/WebSocketTransport.ts
index 82f8069..e25d5da 100644
--- a/src/transport/WebSocketTransport.ts
+++ b/src/transport/WebSocketTransport.ts
@@ -7,9 +7,21 @@ export class WebSocketTransport implements ITransport {
     ws: WebSocket | NodeWebSocket;
     protocols?: string | string[];
 
-    constructor(public events: ITransportEventMap) {}
+    constructor(public events: ITransportEventMap) { }
 
     public send(data: Buffer | Uint8Array): void {
+        // 微信小程序不支持直接发送Uint8Array
+        // WeChat Mini Program does not support sending Uint8Array directly
+        if (globalThis?.wx) {
+            if (data instanceof Uint8Array) {
+                this.ws.send(data.slice().buffer);
+            } else if (Array.isArray(data)){
+                this.ws.send((new Uint8Array(data)).buffer);
+            } else {
+                this.ws.send(data);
+            }
+            return;
+        }
         this.ws.send(data);
     }
 
@@ -23,6 +35,8 @@ export class WebSocketTransport implements ITransport {
      */
     public connect(url: string, headers?: any): void {
         try {
+            if (globalThis?.wx) throw new Error("WeChat Mini Program does not support custom headers");
+
             // Node or Bun environments (supports custom headers)
             this.ws = new WebSocket(url, { headers, protocols: this.protocols });