core/src/main/java/org/apache/ftpserver/command/impl/RETR.java [123:139]:
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                return;
            }

            // 24-10-2007 - added check if PORT or PASV is issued, see
            // https://issues.apache.org/jira/browse/FTPSERVER-110
            //TODO move this block of code into the super class. Also, it makes 
            //sense to have this as the first check before checking everything 
            //else such as the file and its permissions.  
            DataConnectionFactory connFactory = session.getDataConnection();
            if (connFactory instanceof IODataConnectionFactory) {
                InetAddress address = ((IODataConnectionFactory) connFactory)
                        .getInetAddress();
                if (address == null) {
                    session.write(new DefaultFtpReply(
                            FtpReply.REPLY_503_BAD_SEQUENCE_OF_COMMANDS,
                            "PORT or PASV must be issued first"));
                    return;
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core/src/main/java/org/apache/ftpserver/command/impl/STOR.java [85:98]:
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                return;
            }

            // 24-10-2007 - added check if PORT or PASV is issued, see
            // https://issues.apache.org/jira/browse/FTPSERVER-110
            DataConnectionFactory connFactory = session.getDataConnection();
            if (connFactory instanceof IODataConnectionFactory) {
                InetAddress address = ((IODataConnectionFactory) connFactory)
                        .getInetAddress();
                if (address == null) {
                    session.write(new DefaultFtpReply(
                            FtpReply.REPLY_503_BAD_SEQUENCE_OF_COMMANDS,
                            "PORT or PASV must be issued first"));
                    return;
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