I'm a user of the product Sony QX1 and recently there is something wrong.
As known, there are two ways to set up connection between the camera and another device. The camera could set up a wifi connection like a hotspot, to which the other device could connect. And this just works pretty smoothly.
The problem lies in the other mode when the camera and a PC or cellphone connect to the same wifi. According to the statements described in Camera Remote API, the function setCameraFunction is supposed to help reach and control the camera remotely and it has two values, "Remote Shooting" and "Content Transfer".
When using the "Content Transfer" mode, there appears an unknown error described as "Not Available Now".
The overall result is as follows:
HTTP/1.1 200 OK
Connection: close
Content-Length: 40
Content-Type: application/json
{"id":1,"error":[1,"Not Available Now"]}