修改：协议和配置表

assets/Scripts/chat18x/data/EnvData.ts

@@ -0,0 +1,32 @@
+/**
+ * 环境数据
+ */
+import { BaseData } from "./BaseData";
+
+export class EnvData extends BaseData {
+    // cdn地址
+    private _cdn: string = '';
+
+    public reset(): void {
+        this._cdn = '';
+    }
+
+    public clear(): void {
+        this._cdn = '';
+    }
+
+    public destroy(): void {
+        super.destroy();
+        this._cdn = null;
+    }
+
+    /** 设置cdn地址 */
+    public set cdn(value: string) {
+        this._cdn = value;
+    }
+
+    /** 获取cdn地址 */
+    public get cdn(): string {
+        return this._cdn;
+    } 
+}