validate if port param existed

src/methods/allow.js

@@ -59,9 +59,11 @@ module.exports.address = async function (address, port, protocol) {
     if (!checkAddress) return false;
 
     // port validation
+    if (port) {
       if (typeof port !== "number") throw new Error("The port must be type of number.");
       let checkPort = util.checkAppropriatePort(port);
       if (!checkPort) return false;
+    };
 
     // protocol (tcp/udp) validation
     if (protocol) {

src/methods/deny.js

@@ -59,9 +59,11 @@ module.exports.address = async function (address, port, protocol) {
     if (!checkAddress) return false;
 
     // port validation
+    if (port) {
       if (typeof port !== "number") throw new Error("The port must be type of number.");
       let checkPort = util.checkAppropriatePort(port);
       if (!checkPort) return false;
+    };
 
     // protocol (tcp/udp) validation
     if (protocol) {