Correct InvokeAddress

[tobiasrdm]

This pull request fixes #225 and fixes #183

Implementation details

Two new classes have been created: BaseUrlInfo and BaseUrlInfo.Builder.

The following logic is used now:

• serverName: if preferedServerName is non-null and non-empty, it will be used as the server name. Otherwise, the server name will be obtained from request.getServerName()
• serverPort and contextPath was obtained from request.
• BaseUrlInfo.getBaseUrl() and BaseUrlInfo.getServerUrl() don't append 80 or 443 ports to the URL.
• protocol is obtained from request.getHeader("X-Forwarded-Proto") or from request.getScheme() instead of checking request.isSecure().

The method public BaseUrlInfo getBaseUrlInfo(final HttpServletRequest request) was created on class AbstractController, and it passes the value of server.endpoint.address environment setting as the preferedServerName, to keep backward compatibility.

The method AbstractController.getHostAddress() has been removed, because it is no longer used.

[karldahlgren]

Amazing @tobiasrdm!
Thank you once again for all your contributions.

Best regards,
Karl Dahlgren