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REBOL [ Title: "Handy Server Monitor Window" Date: 2-May-2002 Version: 1.0.0 File: %monitor.r Author: "Carl Sassenrath" Purpose: {A handy script that monitors various servers (such as web and email servers) and displays them in a nice little status window. } Email: %carl--rebol--com library: [ level: none platform: none type: none domain: [other-net tcp web GUI] tested-under: none support: none license: none see-also: none ] ] sleep-time: 60 ;-- Main window layout: window: layout [ style lab text 100x24 right middle style inf info 200 font-color white style err info 40 center across origin 8 space 4x4 h2 "Server Monitor" return lab "Status:" t1: info 200 "Initializing" text "Errs" center bottom 40x24 bold return l2: lab "Email Port:" t2: inf 200 e2: err return l3: lab "Web Server:" t3: inf 200 e3: err return l4: lab "Docs Server:" t4: inf 200 e4: err return l5: lab "CGI Script:" t5: inf 200 e5: err return ] ;-- Set error counts: foreach face [e2 e3 e4 e5] [set in get face 'text 0] ;-- Window update functions: start: func [lab str] [ stat none none str lab/color: gold show lab ] done: func [lab] [ lab/color: none show lab ] count-error: func [face] [ face/text: face/text + 1 show face ] stat: func [face 'status str] [ t1/text: str show t1 if face [ face/text: str face/color: select [ok 0.130.0 bad 150.0.0] status show face ] ] check: func [face title block /local info err] [ if none? info: find window/pane face [exit] set [info err] next info start face reform ["Connecting to" title] either error? try block [ stat info bad reform ["Failed:" title] count-error err ][ stat info ok reform [title "Ok"] ] done face ] view/new window forever [ ;-- Clear all status boxes: foreach face [t2 t3 t4 t5] [ face: get face face/color: black face/text: "" show face ] ;-- Try to connect via tcp to known address: check l2 "TCP Email Port" [ close open [ scheme: 'tcp host: port-id: 25 ] ] ;-- Try connect and request from HTTP servers: check l3 "REBOL Web Server" [read] check l4 "REBOL Tech Server" [read] check l5 "CGI Test" [ read ] ;-- Count down to next check: repeat n sleep-time [ wait 1 if not viewed? window [quit] ; in case window was closed stat none none reform ["Checking in" sleep-time - n "seconds"] ] ]
halt ;; to terminate script if DO'ne from webpage
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  • (carl:rebol:com)