Transcoding AMF

Question

It is my desire to transmit some data encoded in Action
Message Format (AMF3) over a socket to and from Flash. I need to
know two things:
1) How to read AMF3 data off a Flash Socket object. I'm
assuming it will come through as an array of bytes and that array
of bytes must be decoded into actual Actionscript
Strings/Arrays/Objects or whatever.
2) How to turn Actionscript vars into AMF encoded binary
strings.
Surely there is some built-in flash object which can do this?
AMFPHP encodes data into AMF for transmission and its Actionscript
client code looks like the attached example.
That code appears to be AS2 and relies on the remoting and
rpc classes
The other example is from Zend_Amf (a framework) that also
uses AMF and they offer some AS3 code that uses NetConnection and
Responder objects.
It would appear that these built-in flash primitives are
built for Remote Procedure Calls and expect return values to be
communicated. I don't see any actual transcoding of objects
from/into AMF which is what I really want. Any help would be much
appreciated.

Answer 1

Responses to amf calls get decoded into native objects
automatically. AMFPHP has as3/amf3 suport as well in recent
versions.
But you can also do your own encoding in actionscript.
Check out the ByteArray class.
You can set the amf encoding version and use writeObject() to
encode.
Encoding is either amf0 (as1 and as2) or amf3 (as3) version