question: public static boolean checkSecurityInfos ( String endpoint , Identity clientIdentity , List < SecurityInfo > securityInfos ) { if ( clientIdentity . isSecure ( ) ) { if ( securityInfos == null || securityInfos . isEmpty ( ) ) { LOG . warn ( "Client '{}' without security info try to connect through the secure endpoint" , endpoint ) ; return false ; } else { for ( SecurityInfo securityInfo : securityInfos ) { if ( checkSecurityInfo ( endpoint , clientIdentity , securityInfo ) ) { return true ; } } return false ; } } else if ( securityInfos != null && ! securityInfos . isEmpty ( ) ) { LOG . warn ( "Client '{}' must connect using DTLS" , endpoint ) ; return false ; } return true ; }
target:  Return true if any of the securityInfos is valid for the given endpoint and client identity.