Poco HTTPClientSession adding headers to HTTPRequest
There is one solution. It can help to others.
request.add("string:key","string:value") //In order to add headers to request.
Eg:
request.add("X-Make","Xiaomi");request.add("X-Model","Redmi 4");request.add("X-Platform","android");request.add("X-Platform-Version","6.0.1");
It works for me.