VuGen cannot record with Chrome an https application which uses QUIC

  • KM01132718
  • 25-Aug-2014
  • 25-Aug-2014


Problems appear during recording of https page in VuGen 11.5x or 12.x with Chrome if the application uses QUIC. LoadRunner currently does not support QUIC and Internet Explorer or Firefox should be used to record the application.


VuGen 11.5x and 12.x are unable to record an https page with Chrome browser.

In the recording log the following error message can be found:

Analyze segments filter initialization ******
****** Error: found multiple wplus_http_wsock_request_ex events with the same processID, sessionid and httpid!

It is followed by "Alternate-Protocol: 443:quic" as shown in the sample below:
****** Response Header For Transaction With Id 316 ******
HTTP/1.1 304 Not Modified
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Date: Thu, 10 Jul 2014 14:15:39 GMT
Server: GFE/2.0
Alternate-Protocol: 443:quic


The error message is caused by QUIC because LoadRunner currently does not support it. 

Once Chrome browser sees Alternate-Protocol: 443:quic header, it switches to QUIC. This is the reason why Chrome cannot be used.


To overcome the problem during recording with VuGen use a browser which does not support QUIC such as Internet Explorer or Firefox.