WildFly -> Undertow -> mapping subdomain to war file not working

Question

WildFly 8.1.0 Final Windows Server 2012 R2

I have two sub-domains pointing at this server, and I want requests to each sub-domain to trigger a different war file

Answer 1

I tested a setup similar to yours on Ubuntu 14.04 with WildFly 8.1.0.Final and Firefox 30, and for me, it works after adding a WEB-INF/jboss-web.xml to one my wars:

<jboss-web>
    <virtual-host>other-host</virtual-host>
</jboss-web>

I defined two different host aliases for the same IP in my /etc/hosts, and my browser gets redirected to the different web apps for http://alias1:8080 and http://alias2:8080 as expected.

Answer 2

This is a bug in current undertow subsystem implementation. It only properly processes default-web-module for default host and doesn't even take it into account for non default hosts.

I created https://issues.jboss.org/browse/WFLY-3639 to track & fix it.

as a workaround until this is fixed add

jboss-web.xml to WEB-INF of your myapp2.war

with content:

<jboss-web>
    <virtual-host>other-host</virtual-host>
    <context-root>/</context-root>
</jboss-web>

which will tell server to what host & context root it should be bound to.

Answer 3

default-host is the virtual host that will be used if an incoming request as no Host: header. So to get the requests to your other server, the request sent by the client should have "Host: other-host" in the request header.

A sample HTTP request from client looks like,

GET /Some/Resource HTTP/1.1
Accept: ....
Host: other-host
....
....

See if this works.