public PipeReader(IPipeStream pipeStream, TransportMessageHandler messageHandler, Action onDisconnected)
{
_pipeStream = pipeStream;
_messageHandler = messageHandler;
_onDisconnected = onDisconnected;
_transport = new NamedPipeTransport(_pipeStream);
}
public async Task Read(TransportMessageHandler messageHandler)
{
var packet = await ReadPacketFromPipe().ConfigureAwait(false);
while (packet.Position < packet.Length)
{
var message = new TransportMessage();
message.MergeDelimitedFrom(packet);
switch (message.DataCase)
{
case TransportMessage.DataOneofCase.RequestInit:
messageHandler.HandleRequestInit(message.RequestInit.MethodFullName,
message.RequestInit.Deadline?.ToDateTime());
break;
case TransportMessage.DataOneofCase.Headers:
var headerMetadata = ConstructMetadata(message.Headers.Metadata);
messageHandler.HandleHeaders(headerMetadata);
break;
case TransportMessage.DataOneofCase.PayloadInfo:
var payload = new byte[message.PayloadInfo.Size];
if (message.PayloadInfo.InSamePacket)
{
packet.Read(payload, 0, payload.Length);
}
else
{
_pipeStream.Read(payload, 0, payload.Length);
}
messageHandler.HandlePayload(payload);
break;
case TransportMessage.DataOneofCase.RequestControl:
switch (message.RequestControl)
{
case RequestControl.Cancel:
messageHandler.HandleCancel();
break;
case RequestControl.StreamEnd:
messageHandler.HandleStreamEnd();
break;
}
break;
case TransportMessage.DataOneofCase.Trailers:
var trailerMetadata = ConstructMetadata(message.Trailers.Metadata);
var status = new Status((StatusCode)message.Trailers.StatusCode,
message.Trailers.StatusDetail);
messageHandler.HandleTrailers(trailerMetadata, status);
break;
}
}
}