Charset Encoding in WildFly

All my application files were created using UTF-8 yet WildFly serves them as ISO-8859-1.

So I have a few questions:

• does WildFly have a default charset?
• how does WildFly choose the encoding used to set the charset response header?
• what is the difference between default-encoding and url-charset attributes in the WildFly Undertow subsystem?

You can set the default encoding of Wildfly using the following command on the CLI:

/subsystem=undertow/servlet-container=default:write-attribute(name="default-encoding" value="utf-8")

url-charset is used for encoding/decoding the URL query parameters.