Blue Coat Systems Complete Guide to the X-BlueCoat-Via Header in ProxySG

ProxySG Content Policy Language Guide

Table C.1: HTTP Headers Recognized by the ProxySG

If-Match	Request		X
If-Modified-Since	Request
If-None-Match	Request		X
If-Range	Request
If-Unmodified-Since	Request
Last-Modified	Request/Response
Location	Response	X		X
Max-Forwards	Request
Meter	Request/Response	X		X
Pragma	Request/Response	X		X
Proxy-Authenticate	Response		X
Proxy-Authorization	Request		X
Proxy-Connection	Request		X
Range	Request	X		X
Referer	Request	X		X
Retry-After	Response	X		X
Server	Response	X		X
Set-Cookie	Response	X	X	X
Set-Cookie2	Response	X	X	X
TE	Request		X
Trailer	Request/Response		X
Transfer-Encoding	Request/Response		X
Upgrade	Request/Response		X
User-Agent	Request	X		X
Vary	Response	X	X	X
Via	Request/Response	X	X	X
Warning	Request/Response	X	X	X
WWW-Authenticate	Response

The following table lists custom headers that are recognized by the ProxySG.

Table C.2: Custom HTTP Headers Recognized by the ProxySG

Header Field	Request/Response Form	Allowed Actions
Authentication-Info	Response	append( )
Front-End-Https	Request/Response	rewrite( ), set( ), delete( )
P3P	Request/Response	rewrite( ), set( ), delete( )
Refresh	Request/Response	rewrite( ), set( ), delete( )
X-BlueCoat-Error	Request/Response	Cannot be modified.
X-BlueCoat-Via	Request/Response	delete( )
X-Forwarded-For	Request	rewrite( ), set( ), delete( )

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