小调整

packages/gui/extra/scripts/tampermonkey.script

@@ -35,7 +35,7 @@
 .____ds-icon____{
 	position: fixed;
 	right: 5px;
-	top: 35%;
+	top: 30%;
 	z-index: 9999;
 	width: 36px;
 	height: 36px;

packages/mitmproxy/src/lib/interceptor/impl/res/AfterOPTIONSHeaders.js

@@ -16,10 +16,10 @@ module.exports = {
     }
 
     // 替换响应头
-    responseReplaceApi.replaceResponseHeaders(headers, res, proxyRes)
-
+    if (responseReplaceApi.replaceResponseHeaders(headers, res, proxyRes)) {
       res.setHeader('DS-AfterOPTIONSHeaders-Interceptor', true)
       log.info('AfterOPTIONSHeaders intercept:', JSON.stringify(headers))
+    }
   },
   is (interceptOpt) {
     return !!interceptOpt.options

packages/mitmproxy/src/lib/interceptor/impl/res/responseReplace.js

@@ -38,7 +38,7 @@ function replaceResponseHeaders (newHeaders, res, proxyRes) {
     // 新增响应头
     for (const headerKey in newHeaders) {
       const headerValue = newHeaders[headerKey]
-      if (!headerValue || headerValue === REMOVE) {
+      if (headerValue == null || headerValue === REMOVE) {
         continue
       }
 
@@ -46,6 +46,9 @@ function replaceResponseHeaders (newHeaders, res, proxyRes) {
       preHeaders[headerKey] = null // 标记原先响应头为null
     }
 
+    if (lodash.isEmpty(preHeaders)) {
+      return null
+    }
     // 返回原先响应头
     return preHeaders
   }