retrofit2를 통해 Json-rpc을 보내는 방법?

Question

json-rpc을 retrofit2을 통해 보내려고했습니다. 이 내 인터페이스 :

public interface ApiInterfaceJson { 

@POST 
@Headers("Content-Type: application/json") 
Call<String> getDataJson(
     @Url String url, 
     @Body RequestBody body); 

}

이 retrofit 만들기 :

retrofitJson = new Retrofit.Builder() 
      .addConverterFactory(ScalarsConverterFactory.create()) 
      .baseUrl("http://localhost:8800") 
      .client(client) 
      .build(); 

    apiInterfaceJson = retrofitJson.create(ApiInterfaceJson.class); 

전화 :

JSONObject paramObject = new JSONObject(); 
    try { 
     paramObject.put("id", "0"); 
     paramObject.put("name", "user"); 
     paramObject.put("command", "finish"); 
    }catch(Exception e){ 
    } 
    RequestBody requestBody= RequestBody.create(MediaType.parse("application/json"), paramObject.toString());  
MinersMonitorApplication.getApiJson().getDataJson("http://10.10.10.230:10000", requestBody).enqueue(new Callback<String>() { 
      @Override 
      public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {}    
      @Override 
      public void onFailure(Call<String> call, Throwable t) { 
      } 
     }); 

결과는 SocketTimeoutException입니다.

Answer 1

시도의 추가 권한

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />