public bool TryParseMessage(ref ReadOnlySequence <byte> input, IInvocationBinder binder, out HubMessage message)
{
if (!BinaryMessageParser.TryParseMessage(ref input, out var payload))
{
message = null;
return(false);
}
var arraySegment = GetArraySegment(payload);
message = ParseMessage(arraySegment.Array, arraySegment.Offset, binder);
return(message != null);
}
public byte[] GetMessageBytes(HubMessage message)
{
return(HubProtocolExtensions.GetMessageBytes(this, message));
}
public bool TryParseMessage(ref ReadOnlySequence <byte> input, IInvocationBinder binder, out HubMessage message)
{
if (!TextMessageParser.TryParseMessage(ref input, out var payload))
{
message = null;
return(false);
}
var textReader = Utf8BufferTextReader.Get(payload);
try
{
message = ParseMessage(textReader, binder);
}
finally
{
Utf8BufferTextReader.Return(textReader);
}
return(message != null);
}
public void WriteMessage(HubMessage message, IBufferWriter <byte> output)
{
WriteMessageCore(message, output);
TextMessageFormatter.WriteRecordSeparator(output);
}
private void WriteMessageCore(HubMessage message, IBufferWriter <byte> stream)
{
var textWriter = Utf8BufferTextWriter.Get(stream);
try
{
using (var writer = JsonUtils.CreateJsonTextWriter(textWriter))
{
writer.WriteStartObject();
switch (message)
{
case InvocationMessage m:
WriteMessageType(writer, HubProtocolConstants.InvocationMessageType);
WriteHeaders(writer, m);
WriteInvocationMessage(m, writer);
break;
case StreamInvocationMessage m:
WriteMessageType(writer, HubProtocolConstants.StreamInvocationMessageType);
WriteHeaders(writer, m);
WriteStreamInvocationMessage(m, writer);
break;
case StreamItemMessage m:
WriteMessageType(writer, HubProtocolConstants.StreamItemMessageType);
WriteHeaders(writer, m);
WriteStreamItemMessage(m, writer);
break;
case CompletionMessage m:
WriteMessageType(writer, HubProtocolConstants.CompletionMessageType);
WriteHeaders(writer, m);
WriteCompletionMessage(m, writer);
break;
case CancelInvocationMessage m:
WriteMessageType(writer, HubProtocolConstants.CancelInvocationMessageType);
WriteHeaders(writer, m);
WriteCancelInvocationMessage(m, writer);
break;
case PingMessage _:
WriteMessageType(writer, HubProtocolConstants.PingMessageType);
break;
case CloseMessage m:
WriteMessageType(writer, HubProtocolConstants.CloseMessageType);
WriteCloseMessage(m, writer);
break;
default:
throw new InvalidOperationException($"Unsupported message type: {message.GetType().FullName}");
}
writer.WriteEndObject();
writer.Flush();
}
}
finally
{
Utf8BufferTextWriter.Return(textWriter);
}
}
