LengthFieldBasedFrameDecoder variable length field problem.

[magneticB]

Hi,

I'm decoding a simple text based protocol with Netty.  I issue text commands
and an HTTP-like response including xml message comes back from the server,
for example:

200 2769 OK Command completed successfully
<?xml version="1.0" encoding="utf-8" ?>...

On the first line 200 is the response code, it uses HTTP status codes, but
doesn't conform to HTTP standard.  After that 2769 indicates the length of
the message.  Clearly if the message is short this number will have a sorter
length.  How can I use LengthFieldBasedFrameDecoder to cater for a length
field that itself changes in length?  No padding around this field is used.

Here's an example of a shorter response:

200 10 OK Command completed successfully
<?xml vers

Is LengthFieldBasedFrameDecoder the best approch for splitting a text based
protocol?  Unfortunately no delimiter is appended to the end of the message
or I would use DelimiterBasedFrameDecoder.

Thanks for any help,

Tom

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