Partially update manual for the cowboy_req

Only the access functions have been modified so far.

1 files changed, 52 insertions, 0 deletions

diff --git a/doc/src/manual/cowboy_req.host.asciidoc b/doc/src/manual/cowboy_req.host.asciidoc
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+= cowboy_req:host(3)
+
+== Name
+
+cowboy_req:host - URI host name
+
+== Description
+
+[source,erlang]
+----
+host(Req :: cowboy_req:req()) -> Host :: binary()
+----
+
+Return the host name of the effective request URI.
+
+The host name can also be obtained using pattern matching:
+
+[source,erlang]
+----
+#{host := Host} = Req.
+----
+
+== Arguments
+
+Req::
+
+The Req object.
+
+== Return value
+
+The host name is returned as a lowercase binary string.
+It is case insensitive.
+
+== Changelog
+
+* *2.0*: Only the host name is returned, it is no longer wrapped in a tuple.
+* *1.0*: Function introduced.
+
+== Examples
+
+.Get the effective request URI's host name
+[source,erlang]
+----
+Host = cowboy_req:host(Req).
+----
+
+== See also
+
+link:man:cowboy_req(3)[cowboy_req(3)],
+link:man:cowboy_req:binding(3)[cowboy_req:binding(3)],
+link:man:cowboy_req:bindings(3)[cowboy_req:bindings(3)],
+link:man:cowboy_req:host_info(3)[cowboy_req:host_info(3)]