How can I upload a Zipfile to my Application Server using an Applet?

I'm using kind of an uncommon, maybe even insecure way now. Since I need to send a describing Object anyway I just appended my file as an array of bytes I lookup my TakeStuffEJB via JNDI, and then I'll invoke a remote-method that wants a byte as parameter. I do CRC32 integrity checks on client and server side and it works.

There is a limit to filesize though. Files above 20 MB whill throw a MarshalException("Not Completed") after a while Maybe this is insane because I don't think RMI was designed for filetransfers. But I'll give it a try since the files I'm sending a rarely larger than 1 MB.

I'm using kind of an uncommon, maybe even insecure way now. Since I need to send a describing Object anyway I just appended my file as an array of bytes. I lookup my TakeStuffEJB via JNDI, and then I'll invoke a remote-method that wants a byte as parameter.

I do CRC32 integrity checks on client and server side and it works. There is a limit to filesize though. Files above 20 MB whill throw a MarshalException("Not Completed") after a while.

Maybe this is insane because I don't think RMI was designed for filetransfers. But I'll give it a try since the files I'm sending a rarely larger than 1 MB.

I further improved this with a Stateful Session Bean. With 3 Methods, initNewFileTransfer(FileNameAndInfo) writeChunk(byte data, int NumberOfBytes) finishFileTransfer(long checksum) I secure the order of the methodcalls with a StateEnum and in @PrePassivate I can reset states and free resources. This way I can do a buffered transfer through RMI with any size.

– unR Jun 14 at 10:00.

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