Ignore SSL errors caused by self signed certificate

[NateKomodo]

I am unable to connect to a websocket based API running locally as it uses a self signed certificate. How can i disable certificate validation?

[Marfusios]

Disabling SSL validation is done globally in .NET and not specific to websocket client. See: https://stackoverflow.com/questions/38138952/bypass-invalid-ssl-certificate-in-net-core

[NateKomodo]

I'm using .NET framework, not .NET core

[Marfusios]

The same approach, they brought it back to .NET core for backward compatibility.

[NateKomodo]

I'm not sure why youre pointing me to that post, ServicePointManager.ServerCertificateValidationCallback has no effect on this, and ServerCertificateCustomValidationCallback requires a http handler

[Marfusios]

Then, unfortunately, cannot help you, I used ServicePointManager.ServerCertificateValidationCallback sometime in the past and it worked.

It seems they added a new API for this in version 2.1 of netstandard (which is not covered by .NET Framework). https://social.msdn.microsoft.com/Forums/vstudio/en-US/8fb8dc56-580e-42a0-a89d-706f2d1417aa/add-remotecertificatevalidationcallback-to-clientwebsocket?forum=netfxbcl

[doghappy]

_ws = new System.Net.WebSockets.ClientWebSocket();
// Please do not use in production environment
_ws.Options.RemoteCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;

[alexCharters]

If you are using .NET Framework, add this line at some point before attempting connection: ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => { return true; };