frontend/client: connection parameters

frontend/artiq

@@ -7,6 +7,12 @@ from artiq.management.pc_rpc import Client
 
 def _get_args():
     parser = argparse.ArgumentParser(description="ARTIQ client")
+    parser.add_argument(
+        "-s", "--server", default="::1",
+        help="hostname or IP of the master to connect to")
+    parser.add_argument(
+        "--port", default=8888, type=int,
+        help="TCP port to use to connect to the master")
     parser.add_argument(
         "-o", "--run-once", default=[], nargs=3,
         action="append",
@@ -20,7 +26,7 @@ def _get_args():
 
 def main():
     args = _get_args()
-    remote = Client("::1", 8888)
+    remote = Client(args.server, args.port)
     try:
         for path, name, timeout in args.run_once:
             remote.run_once(