Can't get response when send dap::ThreadsRequest to vscode.java.debug

[kuafuwang]

My code :
dap::ThreadsRequest thread_request; auto thread_response = d_ptr->session->send(thread_request).get(); if (thread_response.error) { return; }
And i can't get the respone or error.
And the vscode.debug return some tip:
2020-1-5 15:23:05 Error parsing message: com.google.gson.JsonSyntaxException: Expected a com.google.gson.JsonObject but was com.google.gson.JsonNull Expected a com.google.gson.JsonObject but was com.google.gson.JsonNull com.google.gson.JsonSyntaxException: Expected a com.google.gson.JsonObject but was com.google.gson.JsonNull at com.google.gson.internal.bind.TypeAdapters$35$1.read(TypeAdapters.java:896) at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:129) at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:220) at com.google.gson.Gson.fromJson(Gson.java:888) at com.google.gson.Gson.fromJson(Gson.java:853) at com.google.gson.Gson.fromJson(Gson.java:802) at com.google.gson.Gson.fromJson(Gson.java:774) at com.microsoft.java.debug.core.protocol.JsonUtils.fromJson(JsonUtils.java:26) at com.microsoft.java.debug.core.protocol.AbstractProtocolServer.processData(AbstractProtocolServer.java:219) at com.microsoft.java.debug.core.protocol.AbstractProtocolServer.run(AbstractProtocolServer.java:98) at com.microsoft.java.debug.core.adapter.ProtocolServer.run(ProtocolServer.java:61) at com.microsoft.java.debug.plugin.internal.JavaDebugServer$2.run(JavaDebugServer.java:136) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)
Now i have two way to solve the my problem.
One :
make request to vscode.debug to change they code to make argument as an opiton filed .
mu issue

Two:
Add option filed to dap::ThreadsRequest to make the argument field isn't nulll.

I want to know ,do i have another way to solve my problme?

[ben-clayton]

Thanks for the bug report.
I've created PR #11 to try and fix this. Please let me know if this does or doesn't help.

[kuafuwang]

Thanks . It works.

[ben-clayton]

Reopening. Will close again when the fix lands.