TCP/IP file transfer and a router

[Mark Space]

Well, unless I have misunderstood something, FTP programs require an
FTP server which I don't have, nor is it feasable to set up one on
every PC that might run this little program I am creating.

Java will require that you set up a program, some program, also.
There's nothing to receive the transfer request if you don't. Even the
other comments about using Apache code will require some kind of server.

There is an FTP server built into most version of Windows. Have you
looked into just enabling that?

How about Windows file sharing? Just turn that on and use Explorer.
Any already working solution, whether it's FTP, HTTP or Windows, will be
much easier to implement than trying to roll your own.

Anyone has mention IP address in the form of "192.168.x.y" has got the
right idea. It is address like this, ones behind a personal router,

Doesn't matter. Everything above should work still, unless your router
is borked. And even then everything will still work if your router
isn't involved (ie, all PCs are connected via a switch).

that I want to connect to. If this isn't possible then I have a
problem. Does anyone have any solutions? The easier the better.

FTP pretty easy, and supported by most web browsers. Windows file
sharing harder on you, but probably easier on the users once it's going.

 

[Mark Space]

Google for "UDP Hole Punching"..

Google for "Thread Necromancy"...

 

[Christian]

Google for "Thread Necromancy"...

something like that:

http://redwing.hutman.net/~mreed/warriorshtm/necromancer.htm

 

[Christian H]

Google for "UDP Hole Punching"..