Server/clients connection periodically

[akis3110]

Good afternoon. I'm trying to build an application where the server can periodically (eg, 1 time a day) to communicate with clients and ask them to return a file (namely CkeckSum). can someone help me because I am not guru in java

Thanks in advance

[masijade]

With what? What about it do you not understand?

[akis3110]

I think I must use File Transfer Protocol...right? So I must make a ftp server and ftp client....I have no I idea how can the server communicate automatically once a day and ask for the checksum

[masijade]

Not necessarily. What is creting the "checksum", or is it to be createrd "on the fly". Are these *nix machines? If so, look into JSch or SSH2 in order to make use of SSH. If not, and the machines have a running ftp server on each of them already, then use ftp to download the files (if whatever is creating them is creating them in the right places), otherwise you need to write a small server on each machine (that runs constantly, or at least as a scheduled task between specific times) and another program to contact all of these and receive a file from them. Judging by the last few comments, however, you are currently in far above your head.

[Norm]

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