WCF Service calls error out with message Could not establish secure channel for SSL/TLS with authority - wcf

Question

Hello I am trying to call a web service:-
https://example.com/Dealio/DealioCapLinkSvc.svc (actual name hidden).
I am able to browse this service on the browser. However when I call the service through my client application I get the following error:-
Could not establish secure channel for SSL/TLS with authority 'example.com'.
Can any one tell me what is going on ?
Below is App Config:-
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="SOAPEndPoint1" />
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://example.com/dealio/DealioCapLinkSvc.svc/soap"
binding="basicHttpBinding" bindingConfiguration="SOAPEndPoint1"
behaviorConfiguration="authBehavior"
contract="DealioService.IDealioLib" name="SOAPEndPoint1" />
</client>
<behaviors>
<serviceBehaviors>
<behavior>
<serviceMetadata httpGetEnabled="True" httpsGetEnabled="True" />
<serviceDebug includeExceptionDetailInFaults="False" />
</behavior>
</serviceBehaviors>
<!-- Security Behavior -->
<endpointBehaviors>
<behavior name="authBehavior">
<authBehavior />
</behavior>
</endpointBehaviors>
</behaviors>
<extensions>
<behaviorExtensions>
<add name="authBehavior" type="CanadaDealio.AuthBehavior, CanadaDealio , Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
</behaviorExtensions>
</extensions>
</system.serviceModel>
</configuration>
This is the code that calls the service:-
static void Main(string[] args)
{
Deal deal = new Deal();
deal = PopulateDealDetails(deal);
DealReturnResults dealioReturnResults = null;
DealioLibClient dealioServiceProxy = new DealioLibClient();
try
{
ValidationErrorList validationErrorList =
dealioServiceProxy.ValidateDealDetails(deal);
}
catch(Exception e)
{
}
}
Can anyone tell me what is going on ? I don't think this should be very hard to call a WCF Service.

Answer 1

If you look at the Microsoft Documentation, they have the below example that shows how to connect basichttpbinding to SSL
<system.serviceModel>
<services>
<service
type="Microsoft.ServiceModel.Samples.CalculatorService"
behaviorConfiguration="CalculatorServiceBehavior">
<endpoint address=""
binding="basicHttpBinding"
bindingConfiguration="Binding1"
contract="Microsoft.ServiceModel.Samples.ICalculator" />
</service>
</services>
<bindings>
<basicHttpBinding>
<!-- Configure basicHttpBinding with Transport security -- >
<!-- mode and clientCredentialType set to None.-->
<binding name="Binding1">
<security mode="Transport">
<transport clientCredentialType="None"
proxyCredentialType="None">
<extendedProtectionPolicy
policyEnforcement="WhenSupported"
protectionScenario="TransportSelected">
<customServiceNames></customServiceNames>
</extendedProtectionPolicy>
</security>
</binding>
</basicHttpBinding>
</bindings>
</system.serviceModel>

Answer 2

try to add the following code snippets when invoke the web service via adding the service reference.
Client-side.
ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
ServiceReference1.ServiceClient client = new ServiceReference1.ServiceClient();
client.ClientCredentials.ServiceCertificate.Authentication.CertificateValidationMode = System.ServiceModel.Security.X509CertificateValidationMode.None;
try
{
var result = client.SayHello();
Console.WriteLine(result);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
Feel free to let me know if the problem still exists.