What do you mean for _scale_ ? I must say I never wrote RMI code but I
thought it was the easiest way to allow two java objects to communicate with
minimum efforts and great power: am I wrong?
I don't know the problems we can encounter in firewalling, but I think
there's a way to make RMI working throught most firewalls, but I can be
wrong.
Roberto
----- Original Message -----
From: "Eric Hancock" <[EMAIL PROTECTED]>
To: "Java Apache Mail Server" <[EMAIL PROTECTED]>
Sent: Friday, July 14, 2000 6:53 PM
Subject: Re: User manager
>
> RMI doesn't scale terribly well. You end up writing too much code to make
> it work.
>
> It also won't make it through some firewalls, NAT servers, etc...
>
> > Why we need a protocol to manage users and not just use RMI (or CORBA if
> > needed) to send messages to remote classes?
> >
> > Roberto
> >
> > ----- Original Message -----
> > From: "Christophe Marchal" <[EMAIL PROTECTED]>
> > To: "Java Apache Mail Server" <[EMAIL PROTECTED]>
> > Sent: Wednesday, July 05, 2000 11:06 AM
> > Subject: User manager
> >
> >
> >> As someone ask me (Frederico B.) to do it, there is a new structured
> >> protocol for user management :
> >>
> >> All request must have an answer with something to say if it is good or
> > not.
> >> Thus all answer must begin with
> >> +OK if the request is correct and the answer too
> >> -ERR if the request is incorrect or if the remote manager cna't answer
> >> the request
> >>
> >> There are the function of the remote manager :
> >>
> >> - Add a new user :
> >> ADDUSER username password
> >>
> >> possible results:
> >> -ERR usage : ADDUSER [username] [password]
> >> -ERR User already exists
> >> +OK User {username} added
> >>
> >> - Delete an existing user :
> >> DELUSER username
> >>
> >> possible results:
> >> -ERR usage : DELUSER [username]
> >> +OK User [username] deleted
> >> +OK User [username] doesn't exist
> >>
> >> comment :
> >> I don't know how to distinguish the response when a user does
> >> not exist,
> >> because if it doesn't exist it isn't in the list of user and a
> >> delete action is to remove it from this list.
> >> Tell me what you think.
> >>
> >> - List all existing user :
> >> LISTUSERS
> >>
> >> possible results:
> >> -OK {nbusers} existing accounts
> >> user: {username}
> >> ...(repeat the same structure fo all user)
> >>
> >> - Count the existing user :
> >> COUNTUSERS
> >>
> >> possible results:
> >> +OK {nbusers} existing accounts
> >>
> >> - Verify if a user exists or not :
> >> VERIFYUSER [username]
> >>
> >> posible results:
> >> -ERR usage : VERIFYUSER [username]
> >> -ERR User {username} does not exists
> >> +OK User {username} exists
> >>
> >> comment :
> >> I change the name of the command to be close of the other
> >> command.
> >> I think in a near future the remote manager will do a lot of
> >> other stuff (like configuration of the server) not related to the user
> >> management so it may exist another command VERIFY related to this other
> >> stuff.
> >>
> >> - Change the password of an existing user :
> >> CHGUSERPASS [username] [newpassword]
> >>
> >> possible results:
> >> -ERR usage : CHGUSERPASS [username] [newpassword]
> >> -ERR User does not exist
> >> +OK Password changed for {username}
> >>
> >> - Quit the remote manager :
> >> QUIT
> >>
> >> possible result:
> >> +OK Bye
> >>
> >> - Help :
> >> HELP
> >>
> >> possible results:
> >> +OK Currently implemented commands :
> >> HELP
> >> Display this help
> >> ADDUSER [username] [password] Add a new
> > user
> >> DELUSER [username] delete
> >> existing user
> >> LISTUSERS
> >> display existing accounts
> >> COUNTUSERS
> >> display the number of existing accounts
> >> VERIFYUSER [username] verify if
> >> specified user exist
> >> CHGUSERPASS [username] [newpassword] change password of an
> >> existing user
> >> QUIT
> >> close connection
> >>
> >> If the request is none of this, the result is :
> >> -ERR Unknown command
> >>
> >> As you see there isn't a lot of change to do :
> >> - Change the message response of all command
> >> - Change the VERIFY command
> >> - Add the CHGUSERPASS command
> >>
> >> I hope someone can quickly make change because I'm not already familiar
> > with
> >> CVS and I have not already successful compile the James source, so it's
> > not
> >> easy for the test.
> >>
> >>
> >> Christophe Marchal
> >>
> >>
> >>
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> >>
> >>
> >
> >
> >
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> >
>
>
>
>
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