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Example ports

 [1/4] from: ptretter::charter::net at: 7-Sep-2000 17:27


Can someone provide an example of sending something to a port and how to know if you are getting a response. Paul Tretter

 [2/4] from: rebol:techscribe at: 7-Sep-2000 16:35


Hi Paul, Assume two REBOL processes (i.e. you launch REBOL twice on the same machine, or on two different machines connected by TCP/IP. I assume same machine here and use local host setting, 127.0.01 for the client.) REBOL process 1: will be indicated by prompt 1>> REBOL process 2: will be indicated by prompt 2>> Simple Session: 1>> server: open/lines tcp://:8000 2>> client: open/lines tcp://127.0.0.1:8000 2>> insert client "Hi, there." 2>> close client 1>> port: first server 1>> print first port Hi, there. BETTER use copy to prevent data loss on server side: 1>> port: first server 1>> print copy port Hi, there. Complex (Bi-directional) Session: 1>> server: open tcp://:8000 1>> input-buffer: make string! 1024 1>> while [true] [ 1>> server-port: first server 1>> while [true] [ 1>> wait server-port 1>> read-io server-port input-buffer 1024 1>> break 1>> ] 1>> print input-buffer 1>> insert server-port join input-buffer [" from server."] 1>> clear input-buffer 1>> close server-port 1>> ] 2>> message:" Client here. " 2>> client: open tcp://127.0.0.1:8000 2>> insert client message 2>> print copy client 2>> close client Note that once you have sent something on a client port, you must close the client port and open it again, before you can send more stuff out that port. At 05:27 PM 9/7/00 -0500, you wrote:
>Can someone provide an example of sending something to a port and how to >know if you are getting a response. > >Paul Tretter >
;- Elan [ : - ) ] author of REBOL: THE OFFICIAL GUIDE REBOL Press: The Official Source for REBOL Books http://www.REBOLpress.com visit me at http://www.TechScribe.com

 [3/4] from: ptretter:charter at: 7-Sep-2000 19:50


Elan, This is fantastic information. This is exactly the kind of information that should go in the docs. Anyone second the motion? Makes it much plainer to understand. I didnt know about the close after each send from the client. Paul Tretter

 [4/4] from: rebol:techscribe at: 7-Sep-2000 22:12


Hi Paul, thanks. I believe http://www.rebol.com/users/netports.html explains the whole thing quite well. Specifically check http://www.rebol.com/users/netports.html#ExchangingMessages Note that the sender port must be closed before the listening port will collect the message and make it available to the print function At 07:50 PM 9/7/00 -0500, you wrote:
>Elan, > This is fantastic information. This is exactly the kind of information
<<quoted lines omitted: 60>>
> http://www.REBOLpress.com > visit me at http://www.TechScribe.com
;- Elan [ : - ) ] author of REBOL: THE OFFICIAL GUIDE REBOL Press: The Official Source for REBOL Books http://www.REBOLpress.com visit me at http://www.TechScribe.com

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