topic Re: TLS 1.2 Issue -tetsing on sandbox in Integration and Testing

TLS 1.2 Issue -tetsing on sandbox

smitham — Wed, 19 Jul 2017 15:01:28 GMT

I'm trying to create some test transactions on sandbox. I have IIS 10.0 express and .net 4.6 and i got the error saying that the existing connection was forcibly closed by the remote host. Do we have to do any code changes to fix this?

Re: TLS 1.2 Issue -tetsing on sandbox

NexusSoftware — Wed, 19 Jul 2017 15:31:14 GMT

Try adding the following at the beginning of the function where you make a webrequest:

System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;

Re: TLS 1.2 Issue -tetsing on sandbox

smitham — Wed, 19 Jul 2017 16:40:33 GMT

Sorry this did not help.

Re: TLS 1.2 Issue -tetsing on sandbox

NexusSoftware — Wed, 19 Jul 2017 16:48:57 GMT

Although you may have .Net 4.6 installed, what version are you targeting in your application?

Re: TLS 1.2 Issue -tetsing on sandbox

smitham — Wed, 19 Jul 2017 17:29:01 GMT

I think it is targeting 4.0. I cannot use SecurityProtocolType.Tls12 and SecurityProtocolType.Tls11. I can only use SecurityProtocolType.Tls and which is TLS 1.0 so it cannot connect

Re: TLS 1.2 Issue -tetsing on sandbox

smitham — Wed, 19 Jul 2017 17:42:54 GMT

Target >net Framework 4.5

Re: TLS 1.2 Issue -tetsing on sandbox

NexusSoftware — Wed, 19 Jul 2017 17:56:46 GMT

Post the code you are using to make the request.

Re: TLS 1.2 Issue -tetsing on sandbox

smitham — Wed, 19 Jul 2017 18:56:20 GMT

It got fixed with this code

const SslProtocols _Tls12 = (SslProtocols)0x00000C00;

const SecurityProtocolType Tls12 = (SecurityProtocolType)_Tls12;

ServicePointManager.SecurityProtocol = Tls12;