primitives for parsing and composing HTTP headers. Its functionality is
normally hidden by the other parts of the HTTP server and client
libraries. We provide a brief overview of http_reply/3
which can be accessed from the reply body using an exception as explain
in section 3.1.1.
Field(Value). Type is one of:
library(http/html_write)described in section 3.18.
File(+MimeType, +Path), but do not include a modification time header.
stream(+Stream, +Len), but the data on Stream must contain an HTTP header.