Not able to call service from Unity

[gianmarco96]

• [x] I am at the right place and my issue is directly related to ROS#. General technical questions I would post e.g. at ROS Answers or Stack Overflow. For library-specific questions I would look for help in the corresponding library forums.
• [x] I have thoroughly read the Contributing Guideline and writing this issue is the right thing to do in my case.

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I have a question!

• [x] I searched the Wiki, open and closed issues for an answer. I tried my best to find the answer by myself without success. I believe that the discussion we will have in this issue, and the solutions we might find, will help me, and likely other community members who have a similar problem.

Here is my question:

Hello, thank you for the fantastic work you did with library!

I'm really struggling to call services from Unity. I have checked the wiki and the examples, but they do not seem to work for me. I'm sure I'm being thick and don't think it's necessarily a ROS# issue. I don't really understand the example of call service shown below:

rosSocket.CallService<rosapi.GetParamRequest, rosapi.GetParamResponse>("/rosapi/get_param", ServiceCallHandler, new rosapi.GetParamRequest("/rosdistro", "default"));

Or better I tried doing the same exact thing to no result. The server is running on the ROS side and when I call it from unity nothing seems to happen. I have created the ServiceCallHandler and generated the service request and response as per instruction. I could provide the example of my application, but I thought that would be very specific to my use case, while instead a more generic example could be useful to everyone.

Let's say I wanted to call the /spawn service from turtlesim node, which everyone has access to, from Unity using this library. What would I need to do? Possibly step by step?

I have used this library for over a year now, but never managed to use a service properly (I always had to find a work around using topics), I reckon I'm not the only one so I'm sure a more generic guide would be useful to others as well.

Thank you so much for your help,

[gianmarco96]

So ok I sorted it by using RosSocket rosSocket = new RosSocket(new RosBridgeClient.Protocols.WebSocketSharpProtocol(uri)); rather than WebSocketNetProtocol, is there a reason why the latter would not work?

[MartinBischoff]

outdated / closing due to inactivity