An existing connection was forcibly closed by the remote host

nu — Wed, 12 Jul 2017 16:39:53 GMT

Hello.

I'm trying to fix my test requests. For now when I'm sending a request to the 'https://apitest.authorize.net/xml/v1/request.api' I'm getting an exception.

[SocketException (0x2746): An existing connection was forcibly closed by the remote host]

TLS 1.2 is enabled, Windows Server 2008 r2. Any suggestions please?

Thanks!

Re: An existing connection was forcibly closed by the remote host

NexusSoftware — Wed, 12 Jul 2017 17:56:09 GMT

Try adding the following to your application in order to see what version of TLS your schannel.dll is using:

var response = WebRequest.Create("https://www.howsmyssl.com/a/check").GetResponse();
var responseData = new StreamReader(response.GetResponseStream()).ReadToEnd();
Response.WriteLine(responseData);

If < TLS 1.2 add the following at the beginning of the function where you make a webrequest:

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

Re: An existing connection was forcibly closed by the remote host

nu — Thu, 13 Jul 2017 18:05:54 GMT

Thank you @NexusSoftware!

Now I'm getting "

The client and server cannot communicate, because they do not possess a common algorithm

" error.

I think the reason is that I have a website running on ASP.NET 2,0 & .Net 2.0 so I should upgrade them too ASAP.

Re: An existing connection was forcibly closed by the remote host

NexusSoftware — Thu, 13 Jul 2017 18:14:19 GMT

Yes, .Net version 4.6 supports TLS 1.2 by default. Version 4.5 can be set to use TLS 1.2 using the above mentioned technique.

Re: An existing connection was forcibly closed by the remote host

se12sha — Mon, 24 Jul 2017 15:32:52 GMT

I have been getting the same error over the last couple of days when i try sending transaction request in SANDBOX environment.

I tried with all the required configurations as per the solution(s) suggested in the developer blogs but i can't get reid of this error.

Error Details:

System.Net.WebException was unhandled

HResult=-2146233079

Message=The underlying connection was closed: An unexpected error occurred on a send.

Source=System

StackTrace:

at System.Net.HttpWebRequest.GetResponse()

at AuthorizeNet.Util.HttpUtility.PostData[TQ,TS](Environment env, TQ request)

at AuthorizeNet.Api.Controllers.Bases.ApiOperationBase`2.Execute(Environment environment)

at net.authorize.sample.ChargeCreditCard.Run(String ApiLoginID, String ApiTransactionKey, Decimal amount) in c:\Users\seshag\Documents\Collectors\sample-code-csharp-master\sample-code-csharp-master\PaymentTransactions\ChargeCreditCard.cs:line 68

at net.authorize.sample.SampleCode.RunMethod(String methodName) in c:\Users\seshag\Documents\Collectors\sample-code-csharp-master\sample-code-csharp-master\SampleCode.cs:line 228

at net.authorize.sample.SampleCode.SelectMethod() in c:\Users\seshag\Documents\Collectors\sample-code-csharp-master\sample-code-csharp-master\SampleCode.cs:line 63

at net.authorize.sample.SampleCode.Main(String[] args) in c:\Users\seshag\Documents\Collectors\sample-code-csharp-master\sample-code-csharp-master\SampleCode.cs:line 26

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

InnerException: System.IO.IOException

HResult=-2146232800

Message=Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.

Source=System

StackTrace:

at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)

at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)

at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)

at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)

at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result)

at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size)

at System.Net.ConnectStream.WriteHeaders(Boolean async)

InnerException: System.Net.Sockets.SocketException

HResult=-2147467259

Message=An existing connection was forcibly closed by the remote host

Source=System

ErrorCode=10054

NativeErrorCode=10054

StackTrace:

at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)

at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)

InnerException:

Configuration Details of my local machine

I am testing the Authorise.NET API with Sample Code Solution downloaded from GIT repository in Visual Studio 2012. I have installed .NET framework 4.6.2 on my Windows.

Target .NET version I have set in config files is as follows

App.config

</startup>

Packages.config

</packages>

I can't even explictly set to TLS12 in my code as it does not show me tLS2 option

System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls

Would appreciate your support on resolving this issue.

Thanks

Sesha

Re: An existing connection was forcibly closed by the remote host

NexusSoftware — Mon, 24 Jul 2017 15:58:11 GMT

Hello,

using System.Net;
using System.Security.Authentication;

In the function where you make your web request, try:

   const SslProtocols _Tls12 = (SslProtocols)0x00000C00;
   const SecurityProtocolType Tls12 = (SecurityProtocolType)_Tls12;
   ServicePointManager.SecurityProtocol = Tls12;

Re: An existing connection was forcibly closed by the remote host

se12sha — Tue, 25 Jul 2017 11:19:27 GMT

I tried as suggested and it worked like a champ! Thanks a lot for your help.

Sesha

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