Enhance network.port_is_up function by adding a check_interval_sec parameter for customizable retry intervals. Update logging to reflect the new interval, improving feedback during port availability checks.

scripts/network.lua

@@ -39,11 +39,12 @@ function network.get_socket()
 end
 
 -- Check if a TCP port is accepting connections within a timeout (seconds)
-function network.port_is_up(host, port, timeout_sec)
+function network.port_is_up(host, port, timeout_sec, check_interval_sec)
   -- Set defaults with clear intent
   host = host or "127.0.0.1"
   port = port or 0
   timeout_sec = timeout_sec or 30
+  check_interval_sec = check_interval_sec or 2
 
   -- Convert to proper types
   host = tostring(host)
@@ -58,20 +59,19 @@ function network.port_is_up(host, port, timeout_sec)
 
     -- Implement timeout loop with short intervals
     local start_time = os.time()
-    local check_interval = 1 -- Check every 1 second
 
     while (os.time() - start_time) < timeout do
       local cmd = string.format("nc -z -w1 %s %d 2>/dev/null", host, port)
-      local result = os.execute(cmd)
-      if result == 0 then
+      local success, reason, code = os.execute(cmd)
+      if success and reason == "exit" and code == 0 then
         utils.log("Port " .. port .. " is now available on " .. host)
         return true
       end
 
       -- Wait before next check
       if (os.time() - start_time) < timeout then
-        utils.log("Port " .. port .. " not yet available on " .. host .. ", retrying in " .. check_interval .. "s...")
-        os.execute("sleep " .. check_interval)
+        utils.log("Port " .. port .. " not yet available on " .. host .. ", retrying in " .. check_interval_sec .. "s...")
+        os.execute("sleep " .. check_interval_sec)
       end
     end