Setting up maximum of connections for web - wildfly

Question

In JBoss7 we've restricted number of web connections by using this
<connector name="https" scheme="https" protocol="HTTP/1.1" socket-binding="https" secure="true" max-connections="3000">
for urn:jboss:domain:web:1.0 subsystem which is replaced by urn:jboss:domain:undertow:1.2 in the wildfly. How to setup max-connections in wildfly?
I went through the documentation and didn't find matching attribute.
Thanks

Answer 1

Try add under filters definition
<filters>
<connection-limit name="limit-connections" max-concurrent-requests="3000" queue-size="100"/>
</filters>
and then under host or location add (depends on your need)
<filter-ref name="limit-connections"/>
See a configuration example and Model Reference
Also take a look in Configuring the Web server Pool: http://www.javacodegeeks.com/2014/01/entering-undertow-web-server.html

Answer 2

The above comment from Federico Sierra is correct. But in Wildfly 10.x the filter name 'connection-limit' doesn't exist anymore. Instead it is now called 'request-limit'.
So for Wildfly 10.x add filter reference in the untertow subsystem inside 'server' and 'host' context and the request-limit filter inside the 'filters' context:
<subsystem xmlns="urn:jboss:domain:undertow:3.1">
[...]
<server name="default-server">
[...]
<host name="default-host" alias="localhost">
<location name="/" handler="welcome-content"/>
[...]
<filter-ref name="limit-connections"/>
</host>
</server>
[...]
<filters>
<response-header name="server-header" header-name="Server" header-value="WildFly/10"/>
<response-header name="x-powered-by-header" header-name="X-Powered-By" header-value="Undertow/1"/>
<request-limit name="limit-connections" max-concurrent-requests="3000" queue-size="100"/>
</filters>
</subsystem>
Reference: https://github.com/wildfly/wildfly/blob/master/undertow/src/test/resources/org/wildfly/extension/undertow/undertow-3.1.xml

Answer 3

If you want to limit the maximum number of concurrent connections for an HTTP/HTTPS/AJP Connector you have to set the attribute max-connections.
Example:
/subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=max-connections,value=300)
Source: How to set the maximum number of Web connections in WildFly

Answer 4

I would use the max-conncections attribute as defined in the documentation. Either for http and/or https connections. It is defined as
"The maximum number of concurrent connections. Only values greater
than 0 are allowed. For unlimited connections simply undefine this
attribute value."
I don't see the benefit of defining an extra filter. But maybe the others can shed some light on this... So similar to the other solutions it would look like this:
<subsystem xmlns="urn:jboss:domain:undertow:10.0">
[...]
<server name="default-server">
<http-listener name="default" socket-binding="http" max-connections="3000" redirect-socket="https" enable-http2="true"/>
<https-listener name="https" socket-binding="https" max-connections="3000" security-realm="ApplicationRealm" enable-http2="true" />
[...]
</server>
[...]
</subsystem>
Update: I just realized that this is the standalone.xml solution to what Francesco is proposing...