public static void WriteMessage(NegotiationMessage negotiationMessage, Stream output)
{
using (var writer = new JsonTextWriter(new StreamWriter(output, _utf8NoBom, 1024, leaveOpen: true)))
{
writer.WriteStartObject();
writer.WritePropertyName(ProtocolPropertyName);
writer.WriteValue(negotiationMessage.Protocol);
writer.WriteEndObject();
}
TextMessageFormatter.WriteRecordSeparator(output);
}
public static void WriteMessage(NegotiationMessage negotiationMessage, Stream output)
{
using (var memoryStream = new MemoryStream())
{
using (var writer = new JsonTextWriter(new StreamWriter(memoryStream)))
{
writer.WriteStartObject();
writer.WritePropertyName(ProtocolPropertyName);
writer.WriteValue(negotiationMessage.Protocol);
writer.WriteEndObject();
}
TextMessageFormatter.WriteMessage(memoryStream.ToArray(), output);
}
}
public static bool TryParseMessage(ReadOnlySequence <byte> buffer, out NegotiationMessage negotiationMessage, out SequencePosition consumed, out SequencePosition examined)
{
var separator = buffer.PositionOf(TextMessageFormatter.RecordSeparator);
if (separator == null)
{
// Haven't seen the entire negotiate message so bail
consumed = buffer.Start;
examined = buffer.End;
negotiationMessage = null;
return(false);
}
else
{
consumed = buffer.GetPosition(1, separator.Value);
examined = consumed;
}
var memory = buffer.IsSingleSegment ? buffer.First : buffer.ToArray();
return(TryParseMessage(memory.Span, out negotiationMessage));
}
public static bool TryParseMessage(ReadOnlySpan <byte> input, out NegotiationMessage negotiationMessage)
{
if (!TextMessageParser.TryParseMessage(ref input, out var payload))
{
throw new InvalidDataException("Unable to parse payload as a negotiation message.");
}
using (var memoryStream = new MemoryStream(payload.ToArray()))
{
using (var reader = new JsonTextReader(new StreamReader(memoryStream)))
{
var token = JToken.ReadFrom(reader);
if (token == null || token.Type != JTokenType.Object)
{
throw new InvalidDataException($"Unexpected JSON Token Type '{token?.Type}'. Expected a JSON Object.");
}
var negotiationJObject = (JObject)token;
var protocol = JsonUtils.GetRequiredProperty <string>(negotiationJObject, ProtocolPropertyName);
negotiationMessage = new NegotiationMessage(protocol);
}
}
return(true);
}