Hallo Ludovic,
thanks for Your answer. But it didn't work for me. In my example the header:
String forwardedFor = req.getHeader("X-Forwarded-For")
was null.
I also found this link:
http://stackoverflow.com/questions/3867197/get-the-server-port-number-from-tomcat-with-out-a-request
But also there I didnt find an answer. Maybe I will make a configuration
for the internal URL and use this. The administrators will damn me.
Cheers Gio
2014-06-05 17:01 GMT+02:00 [email protected] <[email protected]>:
> 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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