On 05/06/2014 14:59, Georg Füchsle wrote:
Hallo,
my Application is deployed inside a Firewall and/or behind a Load-Balancer.
My application provies a web-app and an web-service. At some time i have to
call my own web-service from the web-app. In this case I have to use the
internal URL of my server.
At another time I have to give the public URL of my web-app to an interface
to other apps or services. In that caes i have to use the external URL of
my web-app. ( That is the URL of the firewall
or the load balancer)
For example:
The App is deployed internal on the Server with the name webserver1. So the
internal URL would be:
http://webserver1:8080/myapp/
But from outside the office I have to call the Url of the Firewall/Load
balancer:
http::// www.mycompany.com/myapp/
I found a way to read the current URL from the request:
HttpServletRequest request = (HttpServletRequest)
FacesContext.getCurrentInstance().getExternalContext().getRequest();
URL reconstructedURL;
reconstructedURL = new URL(request.getScheme(), request.getServerName(),
request.getServerPort(), "");
But the result is the internal URL, when the User is using the internal URL
and the external URL, when the user is using the external URL.
Is there a possibility to read the internal server-name and port in any
case?
This is not exactly your question, but I have a similar problem when I
have to get the real source address of a forwarded request.
I use this function in this case :
public static String getRemoteAddr(HttpServletRequest req) {
String forwardedFor = req.getHeader("X-Forwarded-For");
if(StringUtils.isNotBlank(forwardedFor)) {
return forwardedFor.split("\\s*,\\s*", 2)[0]; // liste
d'adresses de la forme : client, proxy1, proxy2, etc.
}
return req.getRemoteAddr();
}
I guess, but do not have a requyest to your server at hand to check it,
that there must be a header in your request that you can analyse in a
similar way to get what you are looking for.
With forwardedFor.split("\\s*,\\s*", 2)[1] , I guess that you would have
your public address.
Hope this helps.
Ludovic
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