feat: 新增海外站点流量限制和CORS配置优化

- 新增yxai.chat域名到CORS白名单
- 为海外站点yxai.chat添加大流量接口访问限制
- 修复Azure OpenAI图像生成服务默认尺寸设置

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Application/Services/OpenApiService.cs

@@ -21,6 +21,7 @@ public class OpenApiService : ApplicationService
     private readonly AiGateWayManager _aiGateWayManager;
     private readonly ISqlSugarRepository<AiModelEntity> _aiModelRepository;
     private readonly AiBlacklistManager _aiBlacklistManager;
+
     public OpenApiService(IHttpContextAccessor httpContextAccessor, ILogger<OpenApiService> logger,
         TokenManager tokenManager, AiGateWayManager aiGateWayManager,
         ISqlSugarRepository<AiModelEntity> aiModelRepository, AiBlacklistManager aiBlacklistManager)
@@ -69,11 +70,12 @@ public class OpenApiService : ApplicationService
     public async Task ImagesGenerationsAsync([FromBody] ImageCreateRequest input, CancellationToken cancellationToken)
     {
         var httpContext = this._httpContextAccessor.HttpContext;
+        Intercept(httpContext);
         var userId = await _tokenManager.GetUserIdAsync(GetTokenByHttpContext(httpContext));
         await _aiBlacklistManager.VerifiyAiBlacklist(userId);
         await _aiGateWayManager.CreateImageForStatisticsAsync(httpContext, userId, null, input);
     }
-    
+
     /// <summary>
     /// 向量生成
     /// </summary>
@@ -83,6 +85,7 @@ public class OpenApiService : ApplicationService
     public async Task EmbeddingAsync([FromBody] ThorEmbeddingInput input, CancellationToken cancellationToken)
     {
         var httpContext = this._httpContextAccessor.HttpContext;
+        Intercept(httpContext);
         var userId = await _tokenManager.GetUserIdAsync(GetTokenByHttpContext(httpContext));
         await _aiBlacklistManager.VerifiyAiBlacklist(userId);
         await _aiGateWayManager.EmbeddingForStatisticsAsync(httpContext, userId, null, input);
@@ -127,4 +130,12 @@ public class OpenApiService : ApplicationService
 
         return null;
     }
+
+    private void Intercept(HttpContext httpContext)
+    {
+        if (httpContext.Request.Host.Value == "yxai.chat")
+        {
+            throw new UserFriendlyException("当前海外站点不支持大流量接口，请使用转发站点：https://ai.ccnetcore.com");
+        }
+    }
 }

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain/AiGateWay/Impl/ThorAzureOpenAI/Images/AzureOpenAIServiceImageService.cs

@@ -13,7 +13,7 @@ public class AzureOpenAIServiceImageService : IImageService
         var createClient = AzureOpenAIFactory.CreateClient(options);
 
         var client = createClient.GetImageClient(imageCreate.Model);
-
+        imageCreate.Size??="1024x1024";
         // 将size字符串拆分为宽度和高度
         var size = imageCreate.Size.Split('x');
         if (size.Length != 2)