add workers for bingAI

en/searchurl/cloudflare/bing.js

@@ -0,0 +1,29 @@
+export default {
+  async fetch(req, _env) {
+    let url = req.url;
+    let iSlash = url.indexOf('/',11);
+    let nUrl = "https://www.bing.com/"+url.substring(iSlash+1);
+    return goUrl(req, nUrl);
+  }
+}
+
+function goUrl(request, url) {
+  //构建 fetch 参数
+  let fp = {
+    method: request.method,
+    headers: {}
+  }
+  //保留头部信息
+  let reqHeaders = new Headers(request.headers);
+  let dropHeaders = ["cookie","user-agent","accept","accept-language"];
+  let he = reqHeaders.entries();
+  for (let h of he) {
+    let key = h[0],
+	value = h[1];
+    if (dropHeaders.includes(key)) {
+      fp.headers[key] = value;
+    }
+  }
+  return fetch(url, fp);
+}
+