md5sum mismatch when using custom ros service to communicate between android tablet running ROSJava and ROS
I need to communicate between an android tablet and PC. I am able to communicate between them using ros publishers and subscribers without an issue. However, I am running into trouble when I need to make a custom rosservice communication between the two.
I have followed the tutorials here to create a custom ros service using ros java. In my case, the tablet (running android studio) is the client and the PC is the server. After following the tutorial I extract a jar file from rosjava post compilation and use it in android studio to be able to run the client. I am using the exact same code for my client as shown in the tutorial. I have changed the service name and request data as needed for my use case.
The custom service has a string message type as both request and response.
Upon running the client, I receive a md5sum mismatch error as below and the tablet crashes :
[WARN] [1642691160.823770]: Could not process inbound connection: request from [/planner_ui_waypoint_service]: md5sums do not match: [6e8c62b390dd09eb60220ad7325cbdf7] vs. [f0a450661f3d644729d0b1a2391be31c]{'message_definition': 'string goal\n', 'service': '/planner_ui_waypoint_service', 'callerid': '/planner_ui_waypoint_service', 'md5sum': '6e8c62b390dd09eb60220ad7325cbdf7', 'persistent': '1', 'type': 'planner_ui/PlannerUIServiceRequest'}
The error occurs even before the tablet is able to send a request to the PC. The handshake fails when the client runs the connectNode.NewServiceClient line of code (line 51 in the client sample code in the tutorial above)
How can I resolve the issue? If anyone has used a custom rosservice in rosjava can you please help me by walking me through the steps you took.
Thank You
