Send/receive data directly between phone and TV

[huyduongtu]

My question isn't related to Chromecast much. But I'm stuck and need your help. I already implement Chromecast feature on my Android app to cast Video to Chromecast device. Now I want to do it to Smart TV (LG, Sony) that supports DIAL. Currently I can discover and launch my app on TV. But I don't know how to send and receive data between 2 apps on phone and TV. On TV, I can't create any ServerSocket or WebSocket like Chromecast device because my application is written in HTML5. Are there another way to do it? Thanks in advance