Sequence

The sequnece document describes the ingorant client's tenacious aquisition of countable/asdf.html as described in the Transactions document. *** This is still being worked on ***

object	caller	method	purpose	imp
			server starts
PEPAgent	server	addAlwaysExtension	register extensions that are always used by this server	yes
PEPAgent	server	addURLExtension	register extensions with URLs in an extension map	yes
			client starts
PEPAgent	client	addAlwaysExtension	register extensions that are always used by this client	yes
PEPAgent	client	addURLExtension	register extensions with URLs in an extension map	yes
			client starts a request
PEPAgent	client	generateHeaders	instantiate always and URL extensions	yes
extension	PEPAgent	generateHeaders	create instance and assign header name(s)	yes
extension	client*	pre request generation	extensions that need or generate a resource before request proceeds, may generate whole request	no
extension	client*	post request generation	extensions may modify the generated request	no
extension	client*	after connect	negotiation protocols	no
extension	client*	streaming request	compression, encryption, real-time	no
				no
extension	server	on accept, before read	extension provides an alternate (binary) transport protocol, replacing HTTP, but using the same channel	no
extension	server	after reading first line	look up extension based on URI	no
extension	server	before reading message	extension implements an incoming streaming protocol, eg encrytpion or compression	no
extension	server	handleHeaders	extension defines a new method, updates data (including instance generation from a policy-decl (PEPInfo)), fulfills request (common in error messages)	yes
extension	server	before generating a reply	extension modifies server's intended reply (for instance, browse list on resource not found error) or updates data based on it.	yes
extension	server	generateHeaders	extension modifies other known headers.	no
extension	server	before write	alternate transport protocol	no
extension	server	while writing message	outgoing streaming protocol	no

* - client calls PEPAgent which calls all extensions