protected bool TryGetStringFromFieldDelimiter(IByteBuffer input, string packetSignature, out string value)
{
value = null;
int startIndex = input.ReaderIndex;
for (int i = 0; input.ReadableBytes > 0; i++)
{
switch (input.ReadByte())
{
case ProtocolConstants.FIELD_DELIMITER_SPACES:
case ProtocolConstants.FIELD_DELIMITER_TAB:
value = input.GetString(startIndex, i, Encoding.UTF8);
return(true);
case ProtocolConstants.NEW_LINES_CR:
case ProtocolConstants.NEW_LINES_LF:
#if DEBUG
_logger.LogWarning($"[130]NATS protocol name of `{packetSignature}` is invalid. Text = ", input.ReadString(input.ReadableBytes, Encoding.UTF8));
#endif
return(false);
default:
break;
}
}
return(false);
}
protected string GetStringFromFieldDelimiter(IByteBuffer input, string packetSignature)
{
int startIndex = input.ReaderIndex;
for (int i = 0; input.ReadableBytes > 0; i++)
{
switch (input.ReadByte())
{
case ProtocolConstants.FIELD_DELIMITER_SPACES:
case ProtocolConstants.FIELD_DELIMITER_TAB:
return(input.GetString(startIndex, i, Encoding.UTF8));
case ProtocolConstants.NEW_LINES_CR:
if (ProtocolConstants.NEW_LINES_LF == input.SafeReadByte())
{
input.SetReaderIndex(startIndex);
return(string.Empty);
}
#if DEBUG
_logger.LogWarning($"[157]NATS protocol name of `{packetSignature}` is invalid. Text = ", input.ReadString(input.ReadableBytes, Encoding.UTF8));
#endif
break;
default:
break;
}
}
return(string.Empty);
}
protected override void Decode(IChannelHandlerContext context, IByteBuffer input, List <object> output)
{
if (input.GetString(0, 3, Encoding.UTF8).StartsWith("GET"))
{
// this is a websocket upgrade request, so add the appropriate decoders/encoders
context.Channel.Pipeline.AddAfter("messageInterceptor", "websocketCodec", new WebSocketFrameCodec());
context.Channel.Pipeline.AddAfter("messageInterceptor", "protocolHandler", new WebSocketServerProtocolHandler("/", true));
context.Channel.Pipeline.AddAfter("messageInterceptor", "objectAggregator", new HttpObjectAggregator(65536));
context.Channel.Pipeline.AddAfter("messageInterceptor", "httpCodec", new HttpServerCodec());
}
// Remove ourselves
context.Channel.Pipeline.Remove(this);
}
protected bool TryGetStringFromNewlineDelimiter(IByteBuffer input, string packetSignature, out string value)
{
value = null;
int startIndex = input.ReaderIndex;
for (int i = 0; input.ReadableBytes > 0; i++)
{
if (ProtocolConstants.NEW_LINES_CR == input.ReadByte())
{
if (ProtocolConstants.NEW_LINES_LF == input.SafeReadByte())
{
value = input.GetString(startIndex, i, Encoding.UTF8);
return(true);
}
#if DEBUG
_logger.LogWarning($"[181]NATS protocol name of `{packetSignature}` is invalid. Text = ", input.ReadString(input.ReadableBytes, Encoding.UTF8));
#endif
break;
}
}
return(false);
}