public async override Task OnConnectedAsync(ConnectionContext connection)
{
while (true)
{
var result = await connection.Transport.Input.ReadAsync();
var buffer = result.Buffer;
byte[] corrent = Encoding.ASCII.GetBytes("+OK\r\n");
try
{
if (!buffer.IsEmpty)
{
using (StreamReader sr = new StreamReader(new MemoryStream(buffer.ToArray())))
{
while (!sr.EndOfStream)
{
RespObject content = GetContent(sr);
corrent = GetResponse(content);
_logger.LogDebug(JsonConvert.SerializeObject(content, Formatting.Indented));
}
}
await connection.Transport.Output.WriteAsync(corrent);
}
else if (result.IsCompleted)
{
break;
}
}
finally
{
connection.Transport.Input.AdvanceTo(result.Buffer.End);
}
}
}
private byte[] GetResponse(RespObject content)
{
if (content.Type == RespType.Str)
{
return(Encoding.ASCII.GetBytes("+PONG\r\n"));
}
else
{
return(Encoding.ASCII.GetBytes("+OK\r\n"));
}
}
private RespObject GetContent(StreamReader sr)
{
var type = sr.ReadLine();
if (type.Length < 1)
{
return(null);
}
switch (type[0])
{
case '+':
return(new RespObject()
{
Type = RespType.Str,
Value = type.Substring(1)
});
case '*':
var length = int.Parse(type.Substring(1));
RespObject[] content = new RespObject[length];
for (int i = 0; i < length; i++)
{
content[i] = GetContent(sr);
}
return(new RespObject()
{
Type = RespType.Array,
Value = content
});
case ':':
var number = int.Parse(type.Substring(1));
return(new RespObject()
{
Type = RespType.Int,
Value = number
});
case '-':
var error = type.Substring(1);
return(new RespObject()
{
Type = RespType.Err,
Value = error
});
case '$':
string bulk;
if (type[1] == '-')
{
bulk = null;
}
else
{
bulk = sr.ReadLine();
}
return(new RespObject()
{
Type = RespType.Bulk,
Value = bulk
});
default:
throw new Exception("Invalid value");
}
}
