1 files changed, 18 insertions, 0 deletions
diff --git a/ransim/docker/ransim-docker/wait-for-port.sh b/ransim/docker/ransim-docker/wait-for-port.sh
new file mode 100644
index 0000000..10f08de
--- /dev/null
+++ b/ransim/docker/ransim-docker/wait-for-port.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+if [[ $# -ne 2 ]]; then
+	echo "Usage: wait-for-port hostname port" >&2
+	exit 1
+fi
+
+host=$1
+port=$2
+
+echo "Waiting for $host port $port open"
+until telnet $host $port </dev/null 2>/dev/null | grep -q '^Connected'; do
+	sleep 1
+done
+
+echo "$host port $port is open"
+
+exit 0