public static async ValueTask <Maybe <T> > TryReadSafeAsync <T>(this IReadableChannel <T> channel)
{
T result;
while (!channel.TryReadSafe(out result))
{
if (!await channel.WaitForNextSafeAsync().ConfigureAwait(false))
{
return(Maybe <T> .Nothing);
}
}
return(new Maybe <T>(result));
}
private static async Task GreetingDuplexStreaming(
IReadableChannel <GreetingRequest> requestStream,
IWriteOnlyChannel <GreetingResponse> responseStream,
MethodCallContext context)
{
Console.WriteLine("Received duplex streaming request from {{{0}}}", context);
var greeting = "Hello!";
await responseStream.WriteAsync(new GreetingResponse { Greeting = greeting }).ConfigureAwait(false);
Console.WriteLine("Sent: {0}", greeting);
while (await requestStream.WaitForNextSafeAsync().ConfigureAwait(false))
{
while (requestStream.TryReadSafe(out var request))
{
Console.WriteLine("Received: {0}", request.Name);
greeting = $"Hello, {request.Name}!";
await responseStream
.WriteAsync(new GreetingResponse { Greeting = greeting })
.ConfigureAwait(false);
Console.WriteLine("Sent: {0}", greeting);
}
}
Console.WriteLine("Request stream completed");
greeting = "Good Bye!";
await responseStream
.WriteAsync(new GreetingResponse { Greeting = greeting })
.ConfigureAwait(false);
Console.WriteLine("Sent: {0}", greeting);
greeting = "See you again!";
await responseStream
.WriteAsync(new GreetingResponse { Greeting = greeting })
.ConfigureAwait(false);
Console.WriteLine("Sent: {0}", greeting);
Console.WriteLine("Completed");
}
private static async Task <GreetingResponse> GreetingClientStreaming(
IReadableChannel <GreetingRequest> requeststream,
MethodCallContext context)
{
Console.WriteLine("Received client streaming request from {{{0}}}", context);
var names = new List <string>();
while (await requeststream.WaitForNextSafeAsync().ConfigureAwait(false))
{
while (requeststream.TryReadSafe(out var request))
{
Console.WriteLine("Received: {0}", request.Name);
names.Add(request.Name);
}
}
Console.WriteLine("Request stream completed");
var greeting = $"Hello, {string.Join(", ", names)}!";
Console.WriteLine("Sending response: {0}", greeting);
return(new GreetingResponse {
Greeting = greeting
});
}
