Add warning about possible service calls blocking indefinitely

Author: bjsowa

rosbridge_server/scripts/rosbridge_websocket.py

@@ -72,6 +72,7 @@ def __init__(self):
         ##################################################
 
         self.protocol_parameter_handling()
+        self.check_deprecated_parameters()
 
         # get tornado application parameters
         tornado_settings = {}
@@ -331,6 +332,15 @@ def protocol_parameter_handling(self):
         UnadvertiseService.services_glob = RosbridgeWebSocket.services_glob
         CallService.services_glob = RosbridgeWebSocket.services_glob
 
+    def check_deprecated_parameters(self):
+        if RosbridgeWebSocket.default_call_service_timeout == 0.0:
+            self.get_logger().warn(
+                "The 'default_call_service_timeout' parameter is currently set to 0.0, "
+                "which means service calls will block indefinitely if no response is received. "
+                "Please note that in the Jazzy and later releases, the default value for this parameter "
+                "will be updated to 5.0 seconds."
+            )
+
 
 def main(args=None):
     if args is None: