AcceptsContentType checks if a request requests a specific content type.

AcceptsJSON returns true if the request requests JSON as a return-format.

InIPRange returns a function which can check if a requests real IP address is available in the provided list of IP ranges.

NotInIPRange returns a function which can check if a requests real IP address is NOT available in the provided list of IP ranges.

RealIP extracts the remote address from a request and takes care of different headers in which an IP address can be stored.

HeaderIDKeyName defines the name of the header used to transmit the request ID.

IPForwarded* must be set as an option to function RealIP() to specify if you trust the forwarded headers.

IPForwarded* must be set as an option to function RealIP() to specify if you trust the forwarded headers.

ForwardedIPHeaders contains a list of available headers which might contain the client IP address.

ID represents a middleware for request Id generation and adding the ID to the header.