Subject: FTPS - slow initial connection
Date: 2022-08-11 17:24:41
From: Lindsay
Source: ftps-slow-initial-connection

.NET Framework 4.8
We are facing a performance problem - Why is it significantly slow (around 1 minute) first time for TLS authentication.

Second time onwards TLS authentication is fast. When there is gap in communication of some hours (no connection/communication) with the FTP server, then again the significantly slowness is observed for TLS authentication

Note this is FTPS

How do I control this timeout? 
Is there any tracing to see this flow? How do I enable it?
What is reasonable time it should take to validate certificate chains?


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