(being respectful with occurences that might change the behaviour, i.e. default database prefixes)

Raise InvalidArgumentException if $retryURL is not a string AND is not null

Use InvalidArgumentException instead of SimpleSAML_Error_Exception when dealing with wrong input parameters.

Move SimpleSAML_Utilities:: checkCookie() to SimpleSAML\Utils\HTTP::checkSessionCookie() and deprecate the former.

SimpleSAML_Utilities::resolvePath was moved incorrectly to \SimpleSAML\Utils\HTTP instead of \SimpleSAML\Utils\System. Fix that.

Move SimpleSAML_Utilities:: redirectUntrustedURL() to SimpleSAML\Utils\HTTP:: redirectUntrustedURL() and deprecate the former.

Move SimpleSAML_Utilities:: checkURLAllowed() to SimpleSAML\Utils\HTTP:: checkURLAllowed() and deprecate the former.

Move SimpleSAML_Utilities:: redirectTrustedURL() to SimpleSAML\Utils\HTTP:: redirectTrustedURL() and deprecate the former.

Move SimpleSAML_Utilities:: setCookie() to SimpleSAML\Utils\HTTP:: setCookie() and deprecate the former.

Move the createPostRedirectLink(), postRedirect() and createHttpPostRedirectLink() methods in SimpleSAML_Utilities to \SimpleSAML\Utils\HTTP. The last one is made private, the others are renamed to submitPOSTData() and getPOSTRedirectURL(), respectively. Deprecate the three old ones.

Move SimpleSAML_Utilities::normalizeURL() to SimpleSAML\Utils\HTTP::normalizeURL() and deprecate the former.

Move SimpleSAML_Utilities::resolveURL() to SimpleSAML\Utils\HTTP::resolveURL() and deprecate the former.

Move SimpleSAML_Utilities::selfURLNoQuery() to SimpleSAML\Utils\HTTP::getSelfURLNoQuery() and deprecate the former.

Move SimpleSAML_Utilities::selfURL() to SimpleSAML\Utils\HTTP::getSelfURL() and deprecate the former.

Move SimpleSAML_Utilities::selfURLhost() to SimpleSAML\Utils\HTTP::getSelfURLHost() and deprecate the former.

Move SimpleSAML_Utilities::getFirstPathElement() to SimpleSAML\Utils\HTTP::getFirstPathElement() and deprecate the former.

Move SimpleSAML_Utilities::getSelfHostWithPath() to SimpleSAML\Utils\HTTP::getSelfHostWithPath() and deprecate the former.

Move SimpleSAML_Utilities::getSelfHost() to SimpleSAML\Utils\HTTP::getSelfHost() and deprecate the former.

Move SimpleSAML_Utilities:::getAcceptLanguage() to SimpleSAML\Utils\HTTP::getAcceptLanguage() and deprecate the former.

Move SimpleSAML_Utilities:::getBaseURL() to SimpleSAML\Utils\HTTP::getBaseURL() and deprecate the former.

Move SimpleSAML_Utilities:::resolvePath() to SimpleSAML\Utils\HTTP::resolvePath() and deprecate the former.

Move SimpleSAML_Utilities::addURLparameter() to SimpleSAML\Utils\HTTP::addURLParameters() and deprecate the former.

Move SimpleSAML_Utilities::parseQueryString() to SimpleSAML\Utils\HTTP::parseQueryString() and deprecate the former.

Move SimpleSAML_Utilities::getServerHosst(), getServerHTTPS() and getServerPort() to SimpleSAML\Utils\HTTP.