core/src/main/java/org/apache/ftpserver/command/impl/APPE.java [85:105]:
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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;
                }
            }

            // get filenames
            FtpFile file = null;
            try {
                file = session.getFileSystemView().getFile(fileName);
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core/src/main/java/org/apache/ftpserver/command/impl/STOR.java [85:105]:
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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;
                }
            }

            // get filename
            FtpFile file = null;
            try {
                file = session.getFileSystemView().getFile(fileName);
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