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Verbose netcat #113

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Verbose netcat #113

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36baf32
Add netcat support from command line
evandrocoan Oct 3, 2021
1075354
Created the --verbose mode to show progress each attempt (for slow CI…
evandrocoan Oct 3, 2021
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21 changes: 18 additions & 3 deletions wait-for-it.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,8 @@ Usage:
Alternatively, you specify the host and port as host:port
-s | --strict Only execute subcommand if the test succeeds
-q | --quiet Don't output any status messages
-v | --verbose Output each failed attempt to connect
-nc | --netcat Force to use netcat instead of bash tcp detection
-t TIMEOUT | --timeout=TIMEOUT
Timeout in seconds, zero for no timeout
-- COMMAND ARGS Execute command with args after the test finishes
Expand All @@ -32,11 +34,15 @@ wait_for()
WAITFORIT_start_ts=$(date +%s)
while :
do
if [[ $WAITFORIT_ISBUSY -eq 1 ]]; then
nc -z $WAITFORIT_HOST $WAITFORIT_PORT
if [[ $WAITFORIT_ISBUSY -eq 1 ]] || [[ $WAITFORIT_NETCAT -eq 1 ]]; then
nc -z${WAITFORIT_VERBOSE:-} $WAITFORIT_HOST $WAITFORIT_PORT
WAITFORIT_result=$?
else
(echo -n > /dev/tcp/$WAITFORIT_HOST/$WAITFORIT_PORT) >/dev/null 2>&1
if [[ -z "$WAITFORIT_VERBOSE" ]]; then
(echo -n > /dev/tcp/$WAITFORIT_HOST/$WAITFORIT_PORT) >/dev/null 2>&1
else
(echo -n > /dev/tcp/$WAITFORIT_HOST/$WAITFORIT_PORT)
fi
WAITFORIT_result=$?
fi
if [[ $WAITFORIT_result -eq 0 ]]; then
Expand Down Expand Up @@ -81,10 +87,18 @@ do
WAITFORIT_CHILD=1
shift 1
;;
-v| --verbose)
export WAITFORIT_VERBOSE=v
shift 1
;;
-q | --quiet)
WAITFORIT_QUIET=1
shift 1
;;
-nc | --netcat)
export WAITFORIT_NETCAT=1
shift 1
;;
-s | --strict)
WAITFORIT_STRICT=1
shift 1
Expand Down Expand Up @@ -140,6 +154,7 @@ WAITFORIT_TIMEOUT=${WAITFORIT_TIMEOUT:-15}
WAITFORIT_STRICT=${WAITFORIT_STRICT:-0}
WAITFORIT_CHILD=${WAITFORIT_CHILD:-0}
WAITFORIT_QUIET=${WAITFORIT_QUIET:-0}
export WAITFORIT_NETCAT=${WAITFORIT_NETCAT:-0}

# Check to see if timeout is from busybox?
WAITFORIT_TIMEOUT_PATH=$(type -p timeout)
Expand Down