fix: get extra headers from Fetch.requestPaused event

lib/puppeteer/network_manager.rb

@@ -217,6 +217,7 @@ def request_interception=(enabled)
       # CDP may have sent a Fetch.requestPaused event already. Check for it.
       if_present(@network_event_manager.get_request_paused(network_request_id)) do |request_paused_event|
         fetch_request_id = request_paused_event['requestId']
+        patch_request_event_headers(event, request_paused_event)
         handle_request(event, fetch_request_id)
         @network_event_manager.forget_request_paused(network_request_id)
       end
@@ -277,12 +278,19 @@ def request_interception=(enabled)
     end
 
     if request_will_be_sent_event
+      patch_request_event_headers(request_will_be_sent_event, event)
       handle_request(request_will_be_sent_event, fetch_request_id)
     else
       @network_event_manager.store_request_paused(network_request_id, event)
     end
   end
 
+  private def patch_request_event_headers(request_will_be_sent_event, request_paused_event)
+    request_will_be_sent_event['request']['headers'].merge!(
+      # includes extra headers, like: Accept, Origin
+      request_paused_event['request']['headers'])
+  end
+
   private def handle_request(event, fetch_request_id)
     redirect_chain = []
     if event['redirectResponse']

spec/integration/request_interception_spec.rb

@@ -12,6 +12,7 @@
 
       expect(request.url).to include('/empty.html')
       expect(request.headers['user-agent']).not_to be_nil
+      expect(request.headers['accept']).not_to be_nil
       expect(request.method).to eq('GET')
       expect(request.post_data).to be_nil
       expect(request.navigation_request?).to eq(true)