Fix address arg for flwr-simulation

src/py/flwr/server/app.py

@@ -389,7 +389,11 @@ def run_superlink() -> None:
         io_address = (
             f"{CLIENT_OCTET}:{_port}" if _octet == SERVER_OCTET else serverappio_address
         )
-        address = simulationio_address if sim_exec else io_address
+        address = (
+            f"--simulationio-api-address {simulationio_address}"
+            if sim_exec
+            else f"--serverappio-api-address {io_address}"
+        )
         cmd = "flwr-simulation" if sim_exec else "flwr-serverapp"
 
         # Scheduler thread
@@ -446,7 +450,6 @@ def _flwr_scheduler(
             command = [
                 cmd,
                 "--run-once",
-                "--serverappio-api-address",
                 io_api_address,
                 "--insecure",
             ]

src/py/flwr/simulation/app.py

@@ -32,7 +32,11 @@
     get_project_dir,
     unflatten_dict,
 )
-from flwr.common.constant import Status, SubStatus
+from flwr.common.constant import (
+    SIMULATIONIO_API_DEFAULT_CLIENT_ADDRESS,
+    Status,
+    SubStatus,
+)
 from flwr.common.logger import (
     log,
     mirror_output_to_queue,
@@ -73,9 +77,11 @@ def flwr_simulation() -> None:
         description="Run a Flower Simulation",
     )
     parser.add_argument(
-        "--superlink",
+        "--simulationio-api-address",
+        default=SIMULATIONIO_API_DEFAULT_CLIENT_ADDRESS,
         type=str,
-        help="Address of SuperLink's SimulationIO API",
+        help="Address of SuperLink's SimulationIO API (IPv4, IPv6, or a domain name)."
+        f"By default, it is set to {SIMULATIONIO_API_DEFAULT_CLIENT_ADDRESS}.",
     )
     parser.add_argument(
         "--run-once",