Firewall-friendly connection establishment

["Fromm, Stefan" <Fr...@dresden-informatik.de>]

Hello,
 
I have the following scenario. A web service is running on the internet.
My intranet server connects to this web service. After connection the
web service is supposed to reuse the connection, become the client and
send requests to the intranet server. This is firewall-friendly, because
I do not have to open my intranet firewall to allow incoming requests.
Instead I have to open the firewall for outgoing requests only. Once the
connection is established, the web service could reuse it and send its
requests. Using plain sockets it is simple to implement such a scenario.
My question is, if this would also be possible with CXF? The underlying
protocol can be HTTP(S) or TCP(S). I would need some hints where to
start from reading documentation, because I am new to CXF.
 
Best regards
Stefan Fromm

Re: Firewall-friendly connection establishment

[Daniel Kulp <dk...@apache.org>]

Wow.  Interesting case.   You're going to have to write a custom transport for 
this.     Normally, a custom transport isn't that hard.   A Conduit for the 
client side and a Destination for the server side.   However, in this case 
where the conduit becomes a destination and vice-versa might require a bit 
extra work under the covers to achieve.

Dan


On Fri December 4 2009 4:16:29 am Fromm, Stefan wrote:
> Hello,
> 
> I have the following scenario. A web service is running on the internet.
> My intranet server connects to this web service. After connection the
> web service is supposed to reuse the connection, become the client and
> send requests to the intranet server. This is firewall-friendly, because
> I do not have to open my intranet firewall to allow incoming requests.
> Instead I have to open the firewall for outgoing requests only. Once the
> connection is established, the web service could reuse it and send its
> requests. Using plain sockets it is simple to implement such a scenario.
> My question is, if this would also be possible with CXF? The underlying
> protocol can be HTTP(S) or TCP(S). I would need some hints where to
> start from reading documentation, because I am new to CXF.
> 
> Best regards
> Stefan Fromm
> 

-- 
Daniel Kulp
dkulp@apache.org
http://www.dankulp.com/blog