Test tang port before returing it

latchset · May 5, 2024 · 4525b03 · 4525b03
1 parent 04d5e9f
commit 4525b03
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/pins/tang/tests/tang-common-test-functions.in b/src/pins/tang/tests/tang-common-test-functions.in
@@ -59,7 +59,11 @@ tang_create_adv() {
 # Get a random port to be used with a test tang server.
 tang_new_random_port() {
     tang_sanity_check
-    shuf -i 1024-65535 -n 1
+    local port=$(shuf -i 1024-65535 -n 1)
+    while (: >/dev/tcp/127.0.0.1/$port) 2>/dev/null; do
+        port=$(shuf -i 1024-65535 -n 1)
+    done
+    echo $port
 }
 
 # Removes tang rotated keys from the test server.