On Thu, 25 Mar 1999, david shen wrote:
> Hi, Moses
Ok, I will send you a copy of an OO classes that uses the socket command.
It is a little tricky but it should given you a good idea of how the
socket command works. I will send it directly to you and not the list.
> Sure, can you send me the "working" socket example?
>
> >> It seems to me that whoever is responsible for the socket program
> >> needs to know more than the socket command.
> >> The person needs to have the knowledge about the following
> >
> >Tricky in Java.
> >
> >> a) fileevent (get the callback for the client)
> >
> >These two have nothing to do with the socket command and they are
> >already implemented in Jacl.
> >
> >> b) global
> >> c) vwait
> >
> >Not sure what you mean.
> >
>
> I was talking about the examples in the chap 16 of the book, "Practical
> Programming in Tcl and Tk".
>
> e.g.
>
> client example:
Right there is "communication" between these commands but you should
not need to worry about that when implementing the socket command.
You would just need to focus on the code to convert the string options
to the Java socket API. I am planning on implementing a generic Channel
class and Reader/Writer classes that will handle the IO on the socket
(it will also work for files, stdio, stdin and such). I am also going
to be working on the fconfigure command. Once all that is finished the
file event command can be created.
later
mo
> set sock [socket -async host port]
> fileevent $sock w {set connected l] /*the fileevent will be notified
> when the connection occurred */
> global connected
> vwait connected
>
> /* the above example shows that there are some communications between
> the socket and the fileevent */
>
>
>
> server example:
>
> set mainSocket [socket -server Accept 2540]
> proc Accept {newSock addr port} }
> puts "Accepted $newSock from $addr port $port"
> }
> vwait forever
>
> /* the above example shows that there are some communication between the
> server socket and the Accept(callback) functions. */
>
>
> thanks
>
> david
>
>
> >From: Moses DeJong <[EMAIL PROTECTED]>
> >To: david shen <[EMAIL PROTECTED]>
> >CC: [EMAIL PROTECTED], [EMAIL PROTECTED]
> >Subject: Re: [Tcl Java] Re: remote execution
> >Date: Wed, 24 Mar 1999 19:31:13 -0600
> >
> >On Wed, 24 Mar 1999, david shen wrote:
> >
> >> Hi, Mo
> >
> >Those are the only socket commands but sockets can be used in Tcl
> >just like any other file with the puts and gets command. They can
> >also be used by the fconfigure command and the fileevent commands
> >but these do not really matter in Jacl because there is no
> >implementation for fconfigure or fileevent and Java does not support
> >non blocking IO so it is a mute point. What should work is implementing
> >the socket command (client or server or both) and doing blocking IO
> >calls with gets and puts.
> >
> >> Can you tell me a little bit about the scope of the socket
> programming?
> >>
> >> I read the tcl on-line help command.
> >> There are 2 lines in the synopsis:
> >>
> >> socket ?options? host port
> >> socket -server command ?options? port
> >>
> >> and 1 line in the configuration
> >> The fconfigure command .
> >
> >The socket examples are not so hot. I can provide you with some
> >"working" socket examples if you are interested.
> >
> >> I also read the socket programming(chap 16) from the book "Practical
> >> Programming in Tcl and Tk". There are several examples about both
> >> client sockets and server socket.
> >
> >Implementing the "socket" command would not be that hard because it
> >is already implemented in C. It is just a matter of taking the C
> >code and translating it to Java code.
> >
> >> It seems to me that whoever is responsible for the socket program
> >> needs to know more than the socket command.
> >> The person needs to have the knowledge about the following
> >
> >Tricky in Java.
> >
> >> a) fileevent (get the callback for the client)
> >
> >These two have nothing to do with the socket command and they are
> >already implemented in Jacl.
> >
> >> b) global
> >> c) vwait
> >
> >Not sure what you mean.
> >
> >later
> >mo
> >
> >> d) callback command
> >>
> >> Am I correct?
> >>
> >> thanks
> >>
> >> david
> >>
> >>
> >>
> >>
> >>
> >>
> >> >From: Moses DeJong <[EMAIL PROTECTED]>
> >> >To: david shen <[EMAIL PROTECTED]>
> >> >CC: [EMAIL PROTECTED], [EMAIL PROTECTED]
> >> >Subject: [Tcl Java] Re: remote execution
> >> >Date: Wed, 24 Mar 1999 17:52:31 -0600
> >> >
> >> >On Wed, 24 Mar 1999, david shen wrote:
> >> >
> >> >> Hi, guys
> >> >
> >> >That is a little tricky as Jacl does not have a finished
> implementation
> >> >of the socket command yet.
> >> >
> >> >> I would like to run tcl(Jacl) script file on the remote server and
> >> >> then display the result on my machine.
> >> >>
> >> >> What would be the easiest way to to it?
> >> >>
> >> >> I would like to do the following:
> >> >
> >> >You could do this by creating a java socket object directly in Jacl
> >> >using the java::* commands and then invoking the correct methods
> >> >on them. After your Jacl server got a message it could then call
> >> >intep.evalFile() and then write the result back over the network
> >> >connection. That should not be too difficult. If you just want to
> >> >"get it done" this would be the quickest way. If you have a little
> >> >time to spare and you would like to help out you could implement
> >> >the socket command in Jacl. This would be a much better "long term"
> >> >solution as the socket command would become a supported part of
> Jacl.
> >> >I would be willing to provide as much help as I can.
> >> >
> >> >later
> >> >Mo DeJong
> >> >dejong at cs.umn.edu
> >> >
> >> >> 1) using either TCP/IP or RMI to pass the tcl script to the remote
> >> >> machine
> >> >> 2) The remote machine would do the following
> >> >> a) interp.evalFile();
> >> >> b) interp.getResult();
> >> >>
> >> >> 3) pass back the result from 2(b)
> >> >>
> >> >> 4) Is this the best way to do it or there are some other
> >> alternatives?
> >> >>
> >> >> thanks for your help
> >> >>
> >> >> david
> >> >> Get Your Private, Free Email at http://www.hotmail.com
> >> >>
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