code: public MobicentsSipServletMapping findSipServletMappings(SipServletRequest sipServletRequest) {
  		if(logger.isDebugEnabled()) {
  			logger.debug("Checking sip Servlet Mapping for following request : " + sipServletRequest);
  		}
  		for (MobicentsSipServletMapping sipServletMapping : sipServletMappings) {
  			if(sipServletMapping.getMatchingRule().matches(sipServletRequest)) {
  				return sipServletMapping;
  			} else {
  				logger.debug("Following mapping rule didn't match : servletName => " + 
  						sipServletMapping.getServletName() + " | expression = "+ 
  						sipServletMapping.getMatchingRule().getExpression());
  			}
  		}
  		return null;
  	}
docs: {@inheritDoc}