在特定网站上使用Bing Visual Search

如何解决在特定网站上使用Bing Visual Search

我正在尝试使用bing视觉搜索api从特定网站中搜索图像，我的网站托管在azure上，其网址类似于https://abc.z21.web.core.windows.net/ 我正在使用以下代码向视觉Serach API发送请求：

            let visualSearchBaseURL = 'https://api.cognitive.microsoft.com/bing/v7.0/images/visualsearch',boundary = 'boundary_ABC123DEF456',startBoundary = '--' + boundary,endBoundary = '--' + boundary + '--',newLine = "\r\n",bodyHeader = 'Content-disposition: form-data; name="kNowledgeRequest"' + newLine + newLine;
            
            let siteurl = "https://abc.z21.web.core.windows.net";
            let postBody = {
                imageInfo: {
                    imageInsightsToken: insightsToken
                },kNowledgeRequest: {
                    filters: { site: siteurl }
                }
            }
            let requestBody = startBoundary + newLine;
            requestBody += bodyHeader;
            requestBody += JSON.stringify(postBody) + newLine + newLine;
            requestBody += endBoundary + newLine;

            let request = new XMLHttpRequest();

            try {
                request.open("POST",visualSearchBaseURL);
            }
            catch (e) {
                renderErrorMessage("Error performing visual search: " + e.message);
            }
            request.setRequestHeader("Ocp-Apim-Subscription-Key","***************************");
            request.setRequestHeader("Content-Type","multipart/form-data; boundary=" + boundary);
            request.addEventListener("load",handleVisualSearchResponse);
            request.send(requestBody);
        }```
The above code works fine if site filter is set to any other domain like "www.xyz.com" but not working with above set url. 
Any help on this would be really appreciated.