diff --git a/examples/AutomaticPortSelection.js b/examples/AutomaticPortSelection.js
new file mode 100644
index 0000000..584030e
--- /dev/null
+++ b/examples/AutomaticPortSelection.js
@@ -0,0 +1,20 @@
+/* Same as HelloWorld, but with automatic port selection. */
+
+const uWS = require('../dist/uws.js');
+let port = 0; 
+
+const app = uWS./*SSL*/App({
+  key_file_name: 'misc/key.pem',
+  cert_file_name: 'misc/cert.pem',
+  passphrase: '1234'
+}).get('/*', (res, req) => {
+  res.end('Hello World!');
+}).listen(port, (token) => {
+  if (token) {
+    // retrieve listening port
+    port = uWS.us_socket_local_port(token);
+    console.log('Listening to port ' + port);
+  } else {
+    console.log('Failed finding available port');
+  }
+});
diff --git a/src/addon.cpp b/src/addon.cpp
index 53b2bc3..85eec36 100644
--- a/src/addon.cpp
+++ b/src/addon.cpp
@@ -127,6 +127,12 @@ void uWS_us_listen_socket_close(const FunctionCallbackInfo<Value> &args) {
     us_listen_socket_close(0, (struct us_listen_socket_t *) External::Cast(*args[0])->Value());
 }
 
+void uWS_us_socket_local_port(const FunctionCallbackInfo<Value> &args) {
+    // this should take int ssl first, but us_socket_local_port doesn't use it so it doesn't matter
+    int port = us_socket_local_port(0, (struct us_socket_t *) External::Cast(*args[0])->Value());
+    args.GetReturnValue().Set(Integer::New(args.GetIsolate(), port));
+}
+
 /* Temporary KV store (doesn't belong here) */
 #include <unordered_map>
 #include <string>
@@ -365,6 +371,7 @@ PerContextData *Main(Local<Object> exports) {
 
     /* Expose some µSockets functions directly under uWS namespace */
     exports->Set(isolate->GetCurrentContext(), String::NewFromUtf8(isolate, "us_listen_socket_close", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, uWS_us_listen_socket_close)->GetFunction(isolate->GetCurrentContext()).ToLocalChecked()).ToChecked();
+    exports->Set(isolate->GetCurrentContext(), String::NewFromUtf8(isolate, "us_socket_local_port", NewStringType::kNormal).ToLocalChecked(), FunctionTemplate::New(isolate, uWS_us_socket_local_port)->GetFunction(isolate->GetCurrentContext()).ToLocalChecked()).ToChecked();
 
     /* Compression enum */
     exports->Set(isolate->GetCurrentContext(), String::NewFromUtf8(isolate, "DISABLED", NewStringType::kNormal).ToLocalChecked(), Integer::NewFromUnsigned(isolate, uWS::DISABLED)).ToChecked();