Caused by: retrofit.RetrofitError: method POST must have a request body

Question

I am using retrofit to make a post api call, I am getting the following error while trying to hit the endpoint.

     Caused by: rx.exceptions.OnErrorNotImple         


        

Answer 1

It looks like Retrofit wants POST requests to have a payload. There's already an issue for it: https://github.com/square/retrofit/issues/854

As a workaround, you could do something like this:

@POST("/service/v2/auth/ip-address")
rx.Observable verifyIP(@Body Object dummy);

and then do:

LoginService service = CKRestClient.get().create(LoginService.class);

service.verifyIP(null).observeOn(AndroidSchedulers.mainThread()).subscribe(
  new Action1() {
    @Override
    public void call(AuthState authState) {
      // ...
    }
  });
});

Or, if service.verifyIP(null) throws a NPE, replace it with service.verifyIP("") or similar.