Package context defines the Context type, which carries deadlines, cancelation signals, and other request-scoped values across API boundaries and between processes.

Package html implements an HTML5-compliant tokenizer and parser.

Package http2 implements the HTTP/2 protocol.

Package idna implements IDNA2008 using the compatibility processing defined by UTS (Unicode Technical Standard) #46, which defines a standard to deal with the transition from IDNA2003.

Package trace implements tracing of requests and long-lived objects.

Package websocket implements a client and server for the WebSocket protocol as specified in RFC 6455.