An error occurred while trying to HTTP request https & # 8594; Handshake

I am using webservice using basicHttpsbinding

as follows

 EXCClient CreateClient()
    {
        var binding = new System.ServiceModel.BasicHttpsBinding();
        binding.ReaderQuotas.MaxArrayLength = int.MaxValue;
        binding.MaxReceivedMessageSize = int.MaxValue;
        binding.UseDefaultWebProxy = false;
        var endpoint = new System.ServiceModel.EndpointAddress("https://{siteName}/{service}");

        var client = new EXCClient(binding, endpoint);
        return client;
        //return new EXCClient();
    }

      

        
        
        
      

    

The resource site is hosted on IIS 7.5 and has multiple sites located on the server. I am using a .net forms site, the calling code is as follows

var x = service.Client.GetResults({parameter});

      

        
        
        
      

    

When started, this service will return results for about 15 minutes and then start this error.

An error occurred while transmitting the HTTP request https: // {siteName} / {service} /. This could be because the server certificate is not configured properly with HTTP.SYS in the case of HTTPS. It can also be caused by a security binding mismatch between client and server.

The connected connection was closed: An unexpected error occurred while sending. ---> System.IO.IOException: The handshake failed due to an unexpected packet format.

If I reuse the application pool for the site, the service starts returning results again for about 15 minutes and then crashes again. My application pool has no memory limit.

app.config

looks like

<bindings>
    <basicHttpBinding>
        <binding name="BasicHttpBinding_EXC">
            <security mode="Transport" />
        </binding>
        <binding name="BasicHttpBinding_EXC1" />
    </basicHttpBinding>
</bindings>
<client>
    <endpoint address="https://vadrs.tax.utah.gov/vdx/" binding="basicHttpsBinding"
        bindingConfiguration="BasicHttpBinding_EXC" contract="UTVehicleServices.EXC"
        name="BasicHttpBinding_EXC" />
</client>