public static void WriteRequestMessage(HandshakeRequestMessage requestMessage, Stream output)
{
using (var writer = CreateJsonTextWriter(output))
{
writer.WriteStartObject();
writer.WritePropertyName(ProtocolPropertyName);
writer.WriteValue(requestMessage.Protocol);
writer.WriteEndObject();
}
TextMessageFormatter.WriteRecordSeparator(output);
}
public static bool TryParseRequestMessage(ReadOnlySequence <byte> buffer, out HandshakeRequestMessage requestMessage, out SequencePosition consumed, out SequencePosition examined)
{
if (!TryReadMessageIntoSingleMemory(buffer, out consumed, out examined, out var memory))
{
requestMessage = null;
return(false);
}
if (!TextMessageParser.TryParseMessage(ref memory, out var payload))
{
throw new InvalidDataException("Unable to parse payload as a handshake request message.");
}
using (var reader = CreateJsonTextReader(payload))
{
var token = JToken.ReadFrom(reader);
var handshakeJObject = JsonUtils.GetObject(token);
var protocol = JsonUtils.GetRequiredProperty <string>(handshakeJObject, ProtocolPropertyName);
requestMessage = new HandshakeRequestMessage(protocol);
}
return(true);
}
public static void WriteRequestMessage(HandshakeRequestMessage requestMessage, IBufferWriter <byte> output)
{
var textWriter = Utf8BufferTextWriter.Get(output);
try
{
using (var writer = JsonUtils.CreateJsonTextWriter(textWriter))
{
writer.WriteStartObject();
writer.WritePropertyName(ProtocolPropertyName);
writer.WriteValue(requestMessage.Protocol);
writer.WritePropertyName(ProtocolVersionPropertyName);
writer.WriteValue(requestMessage.Version);
writer.WriteEndObject();
writer.Flush();
}
}
finally
{
Utf8BufferTextWriter.Return(textWriter);
}
TextMessageFormatter.WriteRecordSeparator(output);
}
public static bool TryParseRequestMessage(ref ReadOnlySequence <byte> buffer, out HandshakeRequestMessage requestMessage)
{
if (!TextMessageParser.TryParseMessage(ref buffer, out var payload))
{
requestMessage = null;
return(false);
}
var textReader = Utf8BufferTextReader.Get(payload);
try
{
using (var reader = JsonUtils.CreateJsonTextReader(textReader))
{
JsonUtils.CheckRead(reader);
JsonUtils.EnsureObjectStart(reader);
string protocol = null;
int? protocolVersion = null;
var completed = false;
while (!completed && JsonUtils.CheckRead(reader))
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
var memberName = reader.Value.ToString();
switch (memberName)
{
case ProtocolPropertyName:
protocol = JsonUtils.ReadAsString(reader, ProtocolPropertyName);
break;
case ProtocolVersionPropertyName:
protocolVersion = JsonUtils.ReadAsInt32(reader, ProtocolVersionPropertyName);
break;
default:
reader.Skip();
break;
}
break;
case JsonToken.EndObject:
completed = true;
break;
default:
throw new InvalidDataException($"Unexpected token '{reader.TokenType}' when reading handshake request JSON.");
}
}
if (protocol == null)
{
throw new InvalidDataException($"Missing required property '{ProtocolPropertyName}'.");
}
if (protocolVersion == null)
{
throw new InvalidDataException($"Missing required property '{ProtocolVersionPropertyName}'.");
}
requestMessage = new HandshakeRequestMessage(protocol, protocolVersion.Value);
}
}
finally
{
Utf8BufferTextReader.Return(textReader);
}
return(true);
}
