public async ValueTask <IReadOnlyCollection <IMessage> > RouteAsync(
RouteHierarchy routes,
IMessage serializedMessage,
bool publish,
CancellationToken cancellation)
{
if (routes == null)
{
throw new ArgumentNullException(nameof(routes));
}
if (routes.Any(p => p == null))
{
throw new ArgumentException("The collection must not contain null values.", nameof(routes));
}
if (serializedMessage == null)
{
throw new ArgumentNullException(nameof(serializedMessage));
}
var idx = serializedMessage.FrameIndex;
using (CheckDisposal(ref cancellation, out var disposal))
{
try
{
try
{
EncodeRouteRequest(serializedMessage, routes, publish);
var response = await SendInternalAsync(serializedMessage, cancellation);
var result = await DecodeRouteResponseAsync(response, cancellation);
return(result);
}
catch
{
Assert(serializedMessage.FrameIndex >= idx);
while (serializedMessage.FrameIndex > idx)
{
serializedMessage.PopFrame();
}
throw;
}
}
catch (OperationCanceledException) when(disposal.IsCancellationRequested)
{
throw new ObjectDisposedException(GetType().FullName);
}
}
}
private static void EncodeRouteRequest(IMessage message, RouteHierarchy routes, bool publish)
{
using (var stream = message.PushFrame().OpenStream())
using (var writer = new BinaryWriter(stream))
{
writer.Write((short)MessageType.Route);
writer.Write((short)0); // Padding
writer.Write(routes.Count);
for (var i = 0; i < routes.Count; i++)
{
var routeBytes = Encoding.UTF8.GetBytes(routes[i].ToString());
writer.Write(routeBytes.Length);
writer.Write(routeBytes);
}
writer.Write(publish);
}
}
