@ECHO OFF

SETLOCAL EnableDelayedExpansion

SET IP[1]=203.158.101.100=user_xx@gmail.com
SET IP[2]=8.8.8.8=user_xx@gmail.com

SET TimeBetweenPings=5
SET RetryBeforeEmail=5

REM SETTING FLAGS
FOR /F "tokens=2 delims==" %%A IN ('SET IP[') DO (
   SET AlertFlag[%%A]=0
   SET AlertSentGood[%%A]=1
)

:Home
CLS
REM PINGING DESTINATIONS

ECHO ERR EML TARGET IP ADDRESS
ECHO -------------------------

FOR /F "tokens=2,3 delims==" %%A IN ('SET IP[') DO (
   ECHO [!AlertFlag[%%A]!] [!AlertSentGood[%%A]!] [%%A]
   PING -n 1 %%A >NUL

   IF !errorlevel! == 0 (
      SET AlertFlag[%%A]=0
      IF "!AlertSentGood[%%A]!" == "0" (
         CALL :EMAIL "%%A Resolved" "%%B"
         SET AlertSentGood[%%A]=1
      )
   ) ELSE (
      SET /a AlertFlag[%%A]+=1
   )
   
   IF !AlertFlag[%%A]! == %RetryBeforeEmail% (
      CALL :EMAIL "%%A ERROR ALERT" "%%B"
      SET AlertSentGood[%%A]=0
   )
)
PING -n %TimeBetweenPings% -w 1000 10.0.0.0>NUL
Goto Home


:EMAIL
ECHO SENDING EMAIL
REM PUT BLAT COMMAND HERE
EXIT /b



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