/// <summary>
/// Intercepts an asynchronous invocation of a duplex streaming call.
/// </summary>
/// <param name="context">
/// The <see cref="Grpc.Core.Interceptors.ClientInterceptorContext{TRequest, TResponse}"/>
/// associated with the current invocation.
/// </param>
/// <param name="continuation">
/// The callback that continues the invocation process.
/// This can be invoked zero or more times by the interceptor.
/// The interceptor can invoke the continuation passing the given
/// context argument, or substitute as it sees fit.
/// </param>
/// <returns>
/// An instance of <see cref="Grpc.Core.AsyncDuplexStreamingCall{TRequest, TResponse}" />
/// representing an asynchronous duplex-streaming invocation.
/// The interceptor can simply return the return value of the
/// continuation delegate passed to it intact, or construct its
/// own substitute as it sees fit.
/// </returns>
public virtual AsyncDuplexStreamingCall <TRequest, TResponse> AsyncDuplexStreamingCall <TRequest, TResponse>(ClientInterceptorContext <TRequest, TResponse> context, AsyncDuplexStreamingCallContinuation <TRequest, TResponse> continuation)
where TRequest : class
where TResponse : class
{
return(continuation(context));
}
/// <summary>
/// Intercepts an asynchronous invocation of a simple remote call.
/// </summary>
/// <param name="request">The request message of the invocation.</param>
/// <param name="context">
/// The <see cref="Grpc.Core.Interceptors.ClientInterceptorContext{TRequest, TResponse}"/>
/// associated with the current invocation.
/// </param>
/// <param name="continuation">
/// The callback that continues the invocation process.
/// This can be invoked zero or more times by the interceptor.
/// The interceptor can invoke the continuation passing the given
/// request value and context arguments, or substitute them as it sees fit.
/// </param>
/// <returns>
/// An instance of <see cref="Grpc.Core.AsyncUnaryCall{TResponse}" />
/// representing an asynchronous unary invocation.
/// The interceptor can simply return the return value of the
/// continuation delegate passed to it intact, or construct its
/// own substitute as it sees fit.
/// </returns>
public virtual AsyncUnaryCall <TResponse> AsyncUnaryCall <TRequest, TResponse>(TRequest request, ClientInterceptorContext <TRequest, TResponse> context, AsyncUnaryCallContinuation <TRequest, TResponse> continuation)
where TRequest : class
where TResponse : class
{
return(continuation(request, context));
}
public override AsyncUnaryCall <TResponse> AsyncUnaryCall <TRequest, TResponse>(TRequest request, ClientInterceptorContext <TRequest, TResponse> context, AsyncUnaryCallContinuation <TRequest, TResponse> continuation)
{
return(continuation(request, GetNewContext(context)));
}
public override AsyncDuplexStreamingCall <TRequest, TResponse> AsyncDuplexStreamingCall <TRequest, TResponse>(ClientInterceptorContext <TRequest, TResponse> context, AsyncDuplexStreamingCallContinuation <TRequest, TResponse> continuation)
{
return(continuation(GetNewContext(context)));
}
private ClientInterceptorContext <TRequest, TResponse> GetNewContext <TRequest, TResponse>(ClientInterceptorContext <TRequest, TResponse> context)
where TRequest : class
where TResponse : class
{
var metadata = context.Options.Headers ?? new Metadata();
return(new ClientInterceptorContext <TRequest, TResponse>(context.Method, context.Host, context.Options.WithHeaders(interceptor(metadata))));
}