It is using WinSCP.exe and WinSCPnet.dll version is 22.214.171.124
With one of the SFTP serve , we are frequently seeing issue where WinSCP logs "Host not communicating error" and BizTalk gives error "System.TimeoutException: Timeout waiting for WinSCP to respond"
Below is the WinSCP log. We keep getting same log as below until we restart the BizTalk server after which it starts a new connection and is able to transfer files.
>**Host is not communicating for 15 seconds. >Wait for another 15 seconds?** () >Script: Host is not communicating for more than 15 seconds. >Still waiting... >Note: If the problem repeats, try turning off 'Optimize connection buffer size'. > Warning: Aborting this operation will close connection! >Data has arrived, closing query to user. > Answer: OK >Network error: Software caused connection abort >Connection was lost, asking what to do. > Asking user: >Network error: Software caused connection abort () >Script: Network error: Software caused connection abort >Answer: Retry >Script: Searching for host... >Looking up host “X.X.X.X” for SSH connection >Connecting to “X.X.X.X” port 22 >Connecting to host...