private ChannelFactory CreateChannelFactory(Type serviceContract, Uri baseUri)
{
var uri = GetFullUri(serviceContract, baseUri);
var channelFactoryClass = typeof(ChannelFactory <>).MakeGenericType(new [] { serviceContract });
return(_args.Configuration.ConfigureChannelFactory(
new ServiceChannelConfigurationArgs(channelFactoryClass,
uri,
AuthenticationAttribute.IsAuthenticationRequired(serviceContract),
_args.MaxReceivedMessageSize,
_args.CertificateValidationMode,
_args.RevocationMode)));
}
public object GetService(Type serviceContract)
{
// check if the service is provided by this provider
if (CanProvideService(serviceContract))
{
return(null);
}
// create the channel
var authenticationRequired = AuthenticationAttribute.IsAuthenticationRequired(serviceContract);
var credentials = authenticationRequired
? new ChannelCredentials {
UserName = this.UserName, Password = this.Password
}
: null;
var channel = _channelProvider.GetPrimary(serviceContract, credentials);
// create an AOP proxy around the channel, and return that
return(CreateChannelProxy(serviceContract, channel));
}
/// <summary>
/// Creates a channel for the specified contract, using the specified factory.
/// Note that this method modifies the factory, therefore it cannot be re-used!
/// </summary>
/// <param name="serviceContract"></param>
/// <param name="factory"></param>
/// <param name="credentials"></param>
/// <returns></returns>
private static IClientChannel CreateChannel(Type serviceContract, ChannelFactory factory, ChannelCredentials credentials)
{
var authenticationRequired = AuthenticationAttribute.IsAuthenticationRequired(serviceContract);
if (authenticationRequired)
{
factory.Credentials.UserName.UserName = credentials.UserName;
factory.Credentials.UserName.Password = credentials.Password;
}
// invoke the CreateChannel method on the factory
var createChannelMethod = factory.GetType().GetMethod("CreateChannel", Type.EmptyTypes);
var channel = (IClientChannel)createChannelMethod.Invoke(factory, null);
Platform.Log(LogLevel.Debug, "Created service channel instance for service {0}, authenticationRequired={1}, endpoint={2}",
serviceContract.Name, authenticationRequired, factory.Endpoint.Address.Uri);
// add some identifying information to the channel, in case we are asked to obtain a failover channel
channel.Extensions.Add(new ChannelInfo(serviceContract, credentials));
return(channel);
}
/// <summary>
/// Tests a service contract to see if it requires authentication.
/// </summary>
/// <param name="serviceContract"></param>
/// <returns></returns>
public static bool IsAuthenticationRequired(Type serviceContract)
{
AuthenticationAttribute authAttr = AttributeUtils.GetAttribute <AuthenticationAttribute>(serviceContract);
return(authAttr == null ? true : authAttr.AuthenticationRequired);
}
