Batch Script - Call a subroutine for each token

Question

I am trying to pass a token to a subroutine in batch script-

SET devices=host1 host2 host3
FOR /F "tokens=* delims=," %%G IN (%devices%) DO CALL :sendReq %%G

:sendReq

curl.exe http://%1:1234/service/monitor

GOTO :EOF

Problems - The system cannot find the file host1 - is the error message not sure why.

%1 is not resolving to host1?

Solution

for /f is really meant to parse text files or commands, and parses them one whole line at a time. Look at what this produces:

SET devices=host1 host2 host3
FOR /F "tokens=*" %%G IN ("%devices%") DO call :sendReq %%G %%H %%I
goto :EOF

:sendReq
echo Parm1: %1
echo Parm2: %2
echo Parm3: %3
GOTO :EOF

(i.e. each go through the loop reads one whole line, and assigns the different tokens to %G, then %H, %I, %J, ... depending on how many tokens you actually have.)

You just need the simpler version of for:

SET devices=host1 host2 host3
FOR %%G IN (%devices%) DO call :sendReq %%G
goto :EOF

:sendReq
echo In sendReq: %1
GOTO :EOF