Upgraded .NET Framework to 4.6.1 and getting socket exceptions

Question

Initially my project was on .NET framework 4.5 and then I migrated it to .NET framework 4.6.1 And Now, I am getting Socket Exceptions which was not there earlier with .NET 4.5

Error message as:

Inner Exception --------------- Type : System.ServiceModel.CommunicationException, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Message : The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '00:00:59.9900000'.

Inner Exception --------------- Type : System.Net.Sockets.SocketException, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Message : An existing connection was forcibly closed by the remote host

Can anyone please tell, how upgrade in .NET framework is affecting it and what should be the solution?

How did you "migrate" the application? Did you just change the target framework of the project? Can you share a minimal reproducible example? — itsme86
There's no problem with 4.6.1. The error complains that the remote server closed the connection. — Panagiotis Kanavos
I changed the target framework of project in Visual Studio under properties -> Application -> Target framework. And then build the application code. — SANKET_121
@PanagiotisKanavos but it works in .NET 4.5 Then why not in 4.6.1 ? — SANKET_121
We don't know, because you won't share code that exhibits the problem. I can guarantee you that others have successfully used sockets in 4.6.1. — itsme86

HGMamaci HGMamaci · Accepted Answer · 2019-07-29T15:12:13

This might be caused from the server/host security settings. To change security settings you set following before calling remote data:

System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;

System.Net.SecurityProtocolType enum contains all options. If you need multiple seperate them with or (|)

Upgraded .NET Framework to 4.6.1 and getting socket exceptions

1 Answers