Ben Cantrick (mackys) wrote,
Ben Cantrick
mackys

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Help me I am in try / catch hell.


Oh sure, I thought it would be a good idea to use Java to do some port forwarding code we need to extract a video stream off a webserver that's behind a NAT. "It'll be much faster than doing it in C" I said to myself, "and porting should be a snap!" I should have known better.

Let me put it this way: I think I've pretty much had to wrap every single @#$% call to read(), write() and Socket(...) with a try/catch block - some of them with multiple catches. Even socket.setSoTimeout() requires a try/catch block, for fuck's sake! I never had to check the return value from ioctl() in C.

Another thing that annoys me is that byte[]s are the best data structure for low level socket work, but there doesn't seem to be a way to "reset" one to zero length. I don't want to be new'ing 1k arrays constantly, but I have yet to find a good way to express "this array's contents have been transmistted, so feel free to over-write it." I ended up having to declare and maintain a separate int just to hold the number of bytes in the byte[]. Cuz, you know, letting me do byte[].length = 0 or byte[].empty() would have just been way too easy. Rargh!! Stuff like this makes MFC's CString class look well-designed in comparison! And don't get me started on the atrocious travesties that every Java sockets tutorial I've come across has been. I don't think the people who wrote most of those even tried to compile their own code, much less test what happens when a connection actually hangs up...


Well, jigenm4c just gave me some good tips, so maybe select() and http://www.javaalmanac.com will save my bacon. All suggestions are appreciated at this point...
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