diff --git a/lib/requestHandler.js b/lib/requestHandler.js
index 0f8c3f7..03067ce 100644
--- a/lib/requestHandler.js
+++ b/lib/requestHandler.js
@@ -272,7 +272,15 @@ function getUserReqHandler(userRule, recorder) {
 
     const host = req.headers.host;
     const protocol = (!!req.connection.encrypted && !(/^http:/).test(req.url)) ? 'https' : 'http';
-    const fullUrl = protocol === 'http' ? req.url : (protocol + '://' + host + req.url);
+
+    // try find fullurl https://github.com/alibaba/anyproxy/issues/419
+    let fullUrl = protocol + '://' + host + req.url;
+    if (protocol === 'http') {
+      const reqUrlPattern = url.parse(req.url);
+      if (reqUrlPattern.host && reqUrlPattern.protocol) {
+        fullUrl = req.url;
+      }
+    }
 
     const urlPattern = url.parse(fullUrl);
     const path = urlPattern.path;