When a parameter is defined to be 'in' header, then swagger-tools makes it available to controllers via 'args' variable, but other header's keys will not be included.
My question is: how to read header keys and values that are not specifically defined in 'parameters' section, such as 'cache-control' or 'X-Requested-With'?
Request headers are included in:
res.socket.parser.incoming.headers