When your BCWF service is configured to use a forwarding host, the parent ProxySG appliance could be blocking requests based on the policies configured on it.
A typical BCWF request, looks like the following example:
Note that the request is sent over port 80, when you use unsecure connections.
GET /1/B/BCWF-FEB0111/BLU00001/0/GET/http/www.intuit-technologies.com/80/ HTTP/1.1
Host: 199.19.249.203
Accept: */*
X-Orig-User-Agent: Opera/9.80 (Windows NT 5.1; U; en) Presto/2.7.62 Version/11.01
User-Agent: BlueCoat ProxySG
Accept-Language: en-us
HTTP/1.1 200 Ok
Cache-control: max-age=86400
Content-type: text/html
Date: Thu, 17 Feb 2011 16:15:55 GMT
Last-Modified: Thu, 17 Feb 2011 16:15:55 GMT
Content-length: 61
<Result>
<Code>08010000</Code>
<DirC>15</DirC>
</Result>
When configured to use a forwarding host (sending to port 8080 on a parent proxy for example) it looks like this
GET http://199.19.249.201:80/1/R/3108061058/BLU00001/0/GET/http/www.intuit-technologies.com/80/ HTTP/1.1
Host: 199.19.249.201
Accept: */*
X-Orig-User-Agent: Opera/9.80 (Windows NT 5.1; U; en) Presto/2.7.62 Version/11.01
User-Agent: BlueCoat ProxySG
Accept-Language: en-us
HTTP/1.1 200 Ok
Cache-control: max-age=86400
Content-type: text/html
Date: Mon, 21 Feb 2011 13:37:55 GMT
Last-Modified: Mon, 21 Feb 2011 13:37:55 GMT
Content-length: 61
Proxy-Connection: Keep-Alive
Connection: Keep-Alive
Age: 0
<Result>
<Code>04008000</Code>
<DomC>15</DomC>
</Result>
Configuration - Forwarding Target = TEST