headers：{

host: 'localhost:3000',
  connection: 'close',
  'user-agent': 'Paw/3.1.8 (Macintosh; OS X/10.14.5) GCDHTTPRequest'
}

src/posts/posts.controller.ts

@@ -1,9 +1,10 @@
-import { Controller, Get, Req, Query } from '@nestjs/common';
+import { Controller, Get, Req, Query, Headers } from '@nestjs/common';
 
 @Controller('posts')
 export class PostsController {
     @Get()
-    index(@Query() query) {
+    index(@Headers() headers, @Query() query) {
+        console.log(headers)
         console.log(query)
         return [
             {