Under Review
Last Updated: 25 Oct 2017 17:36 by Imported User
Imported User
Created on: 25 Oct 2017 04:59
Type: Feature Request
1
Fiddler adds a one second overhead on PUT requests
I've struggled debugging a slow put-request to our ASP.NET Core 2.0 Web API. After trying most things, I realized turning Fiddler off solved it. I've confirmed this, enabling the listener adds about 1s overhead to the request. This is only present for PUT requests.

POST-request with Fiddler on: ~20ms

Identical request with PUT, Fiddler on: ~1.200ms

Identical request with PUT, Fiddler off: ~20ms
1 comment
Eric
Posted on: 25 Oct 2017 05:00
It seems likely that your client application hasn't disabled ServicePointManager.Expect100Continue (http://msdn.microsoft.com/en-us/library/system.net.servicepointmanager.expect100continue.aspx) . Depending on your scenarios, you may wish to do so.

See https://blogs.msdn.microsoft.com/fiddler/2011/11/05/net-httpwebrequests-and-expect-100-continue/