How to play sound if phone connects to network? - batch-file

Question

I try to write a little batch script. It should play a sound if my phone joins my network.
#echo off
:A
ping -n 1 xxx.xxx.xxx.xx | findstr TTL && start airsiren.wav
goto A
The problem is now that if the phone is detected, it repeatedly starts the sound. But it's supposed to just play once.
Does anyone know a simple fix? Maybe with an IF condition?
I haven't been doing much with batch, but I think I got some basic knowledge.

Answer 1

I suggest following code:
#echo off
set "LastExitCode=1"
:Loop
%SystemRoot%\System32\ping.exe -n 1 xxx.xxx.xxx.xx | %SystemRoot%\System32\find.exe /C "TTL" >nul
if not %ErrorLevel% == %LastExitCode% set "LastExitCode=%ErrorLevel%" & if %ErrorLevel% == 0 start "Play sound" airsiren.wav
%SystemRoot%\System32\timeout.exe /T 5 /NOBREAK
if not errorlevel 1 goto Loop
PING outputs a line with TTL if there is a response on echo request and exits usually with value 0 on receiving a response and with 1 on getting no response. But PING does not always exit with 0 on a positive response which is the reason for using FIND.
FIND processes the output of PING and searches for lines containing the string TTL. FIND exits with value 0 on finding at least one line with TTL and otherwise with 1 for indicating no line found containing the search string. The output of FIND to handle STDOUT is of no interest and therefore reduced to a minimum by using option /C and redirected to device NUL.
Now the exit code of FIND is compared with an environment variable which holds last exit value of FIND initialized with value 1.
On current exit code being equal last exit code, there is no change in availability of the pinged device on network and therefore nothing to do.
Otherwise on a difference the current exit code is assigned to the environment variable for next loop run and current exit code is compared with value 0. If this second condition is true the pinged device sent the first time a positive response on echo request by PING. In this case the sound is played.
There is nothing else done on pinged device not available anymore on network, i.e. the exit code changes from 0 to 1.
Then a delay of 5 seconds is started using TIMEOUT with giving the user to break it with Ctrl+C. This reduces the processor core usage giving Windows the possibility to use the processor core for other processes and also reduces network usage when the pinged device is available at the moment on network. And of course the pinged device does not need anymore to permanently response on echo requests.
A jump to label Loop is done if TIMEOUT exited normally without a user break. Otherwise on user pressing Ctrl+C the batch file processing also ends.
TIMEOUT with parameter /NOBREAK requires Windows 7 or a later Windows version.
For understanding the used commands and how they work, open a command prompt window, execute there the following commands, and read entirely all help pages displayed for each command very carefully.
echo /?
find /?
goto /?
if /?
ping /?
set /?
start /?
timeout /?
See also single line with multiple commands using Windows batch file for an explanation of operator & and meaning of if not errorlevel 1.

Answer 2

This can be fixed very easily using %errorlevel% and an IF statement.
Original script by Jelle Geerts.
#ECHO OFF
:Search
ping -n 1 "xxx.xxx.xxx.xx" | findstr /r /c:"[0-9] *ms"
if %errorlevel% == 0 (
echo Device was found!
start airsiren.wav
pause.
) else (
goto Search
)

Answer 3

My solution:
#echo off &:: modem_tester_xp+.bat
REM original https://www.elektroda.pl/rtvforum/topic2917839.html
setlocal EnableDelayedExpansion
rem set connection name (for newer than Win XP) from Network Connections (preferred name doesn't have space)
set _connection_name=internet
rem make file which close this script
echo #echo.^>"%~dpn0.exit"^&#del /q "%%~f0">"%~dp0close_%~nx0"
for /f "tokens=2-4 delims==." %%a in ('wmic os get Version /value ^|find "="') do if "%%~c" neq "" set "_system_version=%%~a.%%~b"
set "_con_ip="
set "_my_ip.last="
:start
::-n (seconds+1)
ping 127.0.0.1 >nul -n 3
set "_my_ip="
if not defined _con_ip call :get_con_ip "%_connection_name%"
if defined _con_ip for /f "tokens=3-5 delims= " %%p in ('route print ^|find " 0.0.0.0 "') do if "%%~r" neq "" if /i "%%~p"=="%_con_ip%" ( set "_my_ip=%%~p" ) else if /i "%%~q"=="%_con_ip%" set "_my_ip=%%~q"
rem if connection lost clean variable _my_ip.last
if not defined _my_ip (
set "_con_ip="
set "_my_ip.last="
) else if /i "%_my_ip%" neq "%_my_ip.last%" (
rem remember last connection addres
set "_my_ip.last=%_my_ip%"
call :2run
)
if not exist "%~dpn0.exit" goto start
del /q "%~dpn0.exit"
endlocal
goto :eof
:get_con_ip &::ConnectionName:return variable _con_ip
if "%_system_version%"=="5.1" (
rem XP find modem address
for /f "tokens=2 delims== " %%a in ('netsh diag show gateway WAN* ^|find "." ^|find "="') do if "!_con_ip!"=="" set "_con_ip=%%~a"
) else (
rem if newer works like win7, if not: if "%_system_version%"=="6.1" (rem Windows 7
if "%~1" neq "" for /f "tokens=1,4* delims= " %%n in ('netsh interface ipv4 show interfaces ^|find /i "%~1"') do if "!_con_ip!"=="" if /i "%%~p"=="%~1" for /f "tokens=1* delims=:" %%i in ('netsh interface ipv4 show addresses %%~n ^|find "." ^|find /i "ip"') do if "!_con_ip!"=="" set "_con_ip=%%~j"
if "!_con_ip!" neq "" set "_con_ip=!_con_ip: =!"
)
goto :eof
:2run
rem run external
rem start "modem started" /min /b cmd /c "echo %date% %time% '%_my_ip%'&pause"
start airsiren.wav

Answer 4

There are two problems with your code
Your code will unconditionally goes to the beginning even after the phone is connected, so it repeats playing the sound. You could use ... && (start airsiren.wav & goto :EOF) to terminate the batch file or use another label other than :EOF to do something else. But this doesn't give you the option to keep monitoring the phone for disconnection and re-connection.
You have to check the setting of the default media player (Typically Windows Media Player) and make sure that it is not set to continuously loop or repeat the media. Also it is overkill and somewhat inconvenient to launch a full fledged media player just for playing back a short notification sound, and usually you have to close the media player afterwards.
So this is the code I propose which solves the above mentioned obstacles by providing the option to continuously monitor the phone's connection status and also provide a more programmatic way to play the notification sound in a self contained player by using a hybrid BAT/JSCript solution.
#if (#Code)==(#BatchScript) /* Hybrid BAT/JScript line */
#echo off
setlocal EnableExtensions DisableDelayedExpansion
set #PlaySound=start "" /b cscript //nologo //e:JScript "%~f0"
set "SoundFile.Connect=%SystemRoot%\media\ringout.wav"
set "SoundFile.Disconnect=?"
set "GenFail.Localized.Text=General failure"
:: set to 0 to disable continuous connection monitoring
set "ContinuousMonitoring=1"
set "PhoneIP=xxx.xxx.xxx.xxx"
set "Timeout=3000"
setlocal EnableDelayedExpansion
set "CheckGeneralFailure=1"
echo [%TIME%] Waiting for connection...
:WaitForConnection
ping -n 1 %PhoneIP% -w %Timeout% | findstr "TTL" >nul && (
echo [!TIME!] Phone Connected.
!#PlaySound! "!SoundFile.Connect!"
if %ContinuousMonitoring% NEQ 0 goto :MonitorConnection
goto :EOF
) || (
if !CheckGeneralFailure! NEQ 0 (
ping -n 1 %PhoneIP% -w 100 | findstr /i /c:"%GenFail.Localized.Text%" >nul && (
ping -n 1 -w %Timeout% 127.255.255.255 >nul
(call,) %= Set errorlevel to 0 =%
) || set "CheckGeneralFailure=0"
)
goto :WaitForConnection
)
:MonitorConnection
ping -n 1 %PhoneIP% | findstr "TTL" >nul && (
ping -n 1 -w %Timeout% 127.255.255.255 >nul
goto :MonitorConnection
) || (
echo [!TIME!] Phone Disconnected.
echo [!TIME!] Waiting for connection...
set "CheckGeneralFailure=1"
REM Play another sound for disconnect?
goto :WaitForConnection
)
goto :EOF
/*** End of batch code ***/
#end
/*** JScript Sound Player ***/
var wmpps = {
Undefined : 0,
Stopped : 1,
Paused : 2,
Playing : 3,
ScanForward : 4,
ScanReverse : 5,
Buffering : 6,
Waiting : 7,
MediaEnded : 8,
Transitioning : 9,
Ready : 10,
Reconnecting : 11,
Last : 12
};
var SoundFile;
if (WScript.Arguments.length) SoundFile = WScript.Arguments(0);
var WaitCount = 0;
var objPlayer = new ActiveXObject("WMPlayer.OCX.7");
with(objPlayer) {
URL = SoundFile;
settings.volume = 100;
settings.setMode("loop", false);
controls.play();
while(playState == wmpps.Transitioning) {
WaitCount+=1;
if (WaitCount > 200) break;
WScript.Sleep(10);
}
if (playState == wmpps.Playing) {
while(playState != wmpps.Stopped) WScript.Sleep(1000);
}
close();
}