Merge pull request #2201 from pupil-labs/fix_gethostname

Use correct socket API to retrieve local IP address for Service

pupil_src/shared_modules/service_ui.py

@@ -137,9 +137,17 @@ def reset_restart():
 
         g_pool.menubar.append(ui.Button("Reset window size", set_window_size))
 
-        pupil_remote_addr = "{}:{}".format(
-            socket.gethostbyname(socket.gethostname()), g_pool.preferred_remote_port
-        )
+        for *_, (ip, port, *_) in socket.getaddrinfo(
+            "localhost",
+            g_pool.preferred_remote_port,
+            family=socket.AF_INET,
+            type=socket.SOCK_STREAM,
+        ):
+            pupil_remote_addr = f"{ip}:{port}"
+            break
+        else:
+            pupil_remote_addr = "unknown"
+
         g_pool.menubar.append(
             ui.Text_Input(
                 "pupil_remote_addr",