Stream JSON between devices with Wifi Direct

Question

I need to transmit data between devices via JSON and store the data on Sqlite. That is, there will be a device responsible for receiving the data and at the end will send a "OK" message to the device that sent the data.

I’m using Wifi direct And I’ve already implemented the connection enabling, the search for nearby devices and the connection between them. I would like an idea of how to send the JSON and receive the reply tbem via JSON.