Add missing manual pages for cowboy_stream functions

doc/src/manual/cowboy_stream.asciidoc

@@ -344,7 +344,7 @@ fin() :: fin | nofin
 ----
 
 Used in commands and events to indicate that this is
-the end of the stream.
+the end of a direction of a stream.
 
 === partial_req()
 

doc/src/manual/cowboy_stream.data.asciidoc

@@ -0,0 +1,81 @@
+= cowboy_stream:data(3)
+
+== Name
+
+cowboy_stream:data - Handle data for a stream
+
+== Description
+
+[source,erlang]
+----
+data(StreamID, IsFin, Data, State) -> {Commands, State}
+
+StreamID :: cowboy_stream:stream_id()
+IsFin    :: cowboy_stream:fin()
+Data     :: binary()
+Commands :: cowboy_stream:commands()
+State    - opaque
+----
+
+Handle data for a stream.
+
+This function should be called by all stream handlers. It will
+propagate data to the next configured stream handler. Handlers
+do not have to propagate data that has been fully handled.
+
+== Arguments
+
+StreamID::
+
+The stream ID.
+
+IsFin::
+
+Whether this is the end of the request body.
+
+Data::
+
+The data received.
+
+Commands::
+
+The commands to be executed.
+
+State::
+
+The state for the next stream handler.
+
+== Return value
+
+A list of commands and an opaque state is returned.
+
+The list of commands returned should be included in the
+commands returned from the current stream handler. It
+can be modified if necessary.
+
+The state should be stored in the current stream
+handler's state and passed to `cowboy_stream` when
+necessary. The state should be treated as opaque.
+
+== Changelog
+
+* *2.0*: Function introduced.
+
+== Examples
+
+.Propagate data to the next stream handler
+[source,erlang]
+----
+data(StreamID, IsFin, Data, State=#state{next=Next0}) ->
+    MyCommands = my_commands(),
+    {Commands, Next} = cowboy_stream:data(StreamID, IsFin, Data, Next0),
+    {MyCommands ++ Commands, #state{next=Next}}.
+----
+
+== See also
+
+link:man:cowboy_stream(3)[cowboy_stream(3)],
+link:man:cowboy_stream:init(3)[cowboy_stream:init(3)],
+link:man:cowboy_stream:info(3)[cowboy_stream:info(3)],
+link:man:cowboy_stream:terminate(3)[cowboy_stream:terminate(3)],
+link:man:cowboy_stream:early_error(3)[cowboy_stream:early_error(3)]

doc/src/manual/cowboy_stream.early_error.asciidoc

@@ -0,0 +1,73 @@
+= cowboy_stream:early_error(3)
+
+== Name
+
+cowboy_stream:early_error - Handle an early error for a stream
+
+== Description
+
+[source,erlang]
+----
+early_error(StreamID, Reason, PartialReq, Resp, Opts) -> Resp
+
+StreamID   :: cowboy_stream:stream_id()
+Reason     :: cowboy_stream:reason()
+PartialReq :: cowboy_stream:partial_req()
+Resp       :: cowboy_stream:resp_command()
+Opts       :: cowboy:opts()
+----
+
+Handle an early error for a stream.
+
+This function should be called by all stream handlers. It will
+propagate the early error to the next configured stream handler.
+
+== Arguments
+
+StreamID::
+
+The stream ID.
+
+Reason::
+
+Reason for termination.
+
+PartialReq::
+
+The request data that has been received so far.
+
+Resp::
+
+The response that will be sent as a result of the early error.
++
+It may be modified by the stream handler before or after
+being propagated to the next handler.
+
+Opts::
+
+The protocol options.
+
+== Return value
+
+The response to be sent as a result of the early error.
+
+== Changelog
+
+* *2.0*: Function introduced.
+
+== Examples
+
+.Propagate the early error to the next stream handler
+[source,erlang]
+----
+early_error(StreamID, Reason, PartialReq, Resp, Opts) ->
+    cowboy_stream:early_error(StreamID, Reason, PartialReq, Resp, Opts).
+----
+
+== See also
+
+link:man:cowboy_stream(3)[cowboy_stream(3)],
+link:man:cowboy_stream:init(3)[cowboy_stream:init(3)],
+link:man:cowboy_stream:data(3)[cowboy_stream:data(3)],
+link:man:cowboy_stream:info(3)[cowboy_stream:info(3)],
+link:man:cowboy_stream:terminate(3)[cowboy_stream:terminate(3)]

doc/src/manual/cowboy_stream.info.asciidoc

@@ -0,0 +1,77 @@
+= cowboy_stream:info(3)
+
+== Name
+
+cowboy_stream:info - Handle a message for a stream
+
+== Description
+
+[source,erlang]
+----
+info(StreamID, Info, State) -> {Commands, State}
+
+StreamID :: cowboy_stream:stream_id()
+Info     :: any()
+Commands :: cowboy_stream:commands()
+State    - opaque
+----
+
+Handle a message for a stream.
+
+This function should be called by all stream handlers. It will
+propagate the event to the next configured stream handler.
+Handlers do not have to propagate events that have been
+fully handled.
+
+== Arguments
+
+StreamID::
+
+The stream ID.
+
+Info::
+
+The event received.
+
+Commands::
+
+The commands to be executed.
+
+State::
+
+The state for the next stream handler.
+
+== Return value
+
+A list of commands and an opaque state is returned.
+
+The list of commands returned should be included in the
+commands returned from the current stream handler. It
+can be modified if necessary.
+
+The state should be stored in the current stream
+handler's state and passed to `cowboy_stream` when
+necessary. The state should be treated as opaque.
+
+== Changelog
+
+* *2.0*: Function introduced.
+
+== Examples
+
+.Propagate an event to the next stream handler
+[source,erlang]
+----
+info(StreamID, Info, State=#state{next=Next0}) ->
+    MyCommands = my_commands(),
+    {Commands, Next} = cowboy_stream:info(StreamID, Info, Next0),
+    {MyCommands ++ Commands, #state{next=Next}}.
+----
+
+== See also
+
+link:man:cowboy_stream(3)[cowboy_stream(3)],
+link:man:cowboy_stream:init(3)[cowboy_stream:init(3)],
+link:man:cowboy_stream:data(3)[cowboy_stream:data(3)],
+link:man:cowboy_stream:terminate(3)[cowboy_stream:terminate(3)],
+link:man:cowboy_stream:early_error(3)[cowboy_stream:early_error(3)]

doc/src/manual/cowboy_stream.init.asciidoc

@@ -0,0 +1,80 @@
+= cowboy_stream:init(3)
+
+== Name
+
+cowboy_stream:init - Initialize a stream
+
+== Description
+
+[source,erlang]
+----
+init(StreamID, Req, Opts) -> {Commands, State}
+
+StreamID :: cowboy_stream:stream_id()
+Req      :: cowboy_req:req()
+Opts     :: cowboy:opts()
+Commands :: cowboy_stream:commands()
+State    - opaque
+----
+
+Initialize a stream.
+
+This function must be called by all stream handlers. It will
+initialize the next configured stream handler.
+
+== Arguments
+
+StreamID::
+
+The stream ID.
+
+Req::
+
+The Req object.
+
+Opts::
+
+The protocol options.
+
+Commands::
+
+The commands to be executed.
+
+State::
+
+The state for the next stream handler.
+
+== Return value
+
+A list of commands and an opaque state is returned.
+
+The list of commands returned should be included in the
+commands returned from the current stream handler. It
+can be modified if necessary.
+
+The state should be stored in the current stream
+handler's state and passed to `cowboy_stream` when
+necessary. The state should be treated as opaque.
+
+== Changelog
+
+* *2.0*: Function introduced.
+
+== Examples
+
+.Initialize the next stream handler
+[source,erlang]
+----
+init(StreamID, Req, Opts) ->
+    MyCommands = my_commands(),
+    {Commands, Next} = cowboy_stream:init(StreamID, Req, Opts),
+    {MyCommands ++ Commands, #state{next=Next}}.
+----
+
+== See also
+
+link:man:cowboy_stream(3)[cowboy_stream(3)],
+link:man:cowboy_stream:data(3)[cowboy_stream:data(3)],
+link:man:cowboy_stream:info(3)[cowboy_stream:info(3)],
+link:man:cowboy_stream:terminate(3)[cowboy_stream:terminate(3)],
+link:man:cowboy_stream:early_error(3)[cowboy_stream:early_error(3)]

doc/src/manual/cowboy_stream.terminate.asciidoc

@@ -0,0 +1,61 @@
+= cowboy_stream:terminate(3)
+
+== Name
+
+cowboy_stream:terminate - Terminate a stream
+
+== Description
+
+[source,erlang]
+----
+terminate(StreamID, Reason, State) -> ok
+
+StreamID :: cowboy_stream:stream_id()
+Reason   :: cowboy_stream:reason()
+State    - opaque
+----
+
+Terminate a stream.
+
+This function must be called by all stream handlers. It will
+terminate the next configured stream handler.
+
+== Arguments
+
+StreamID::
+
+The stream ID.
+
+Reason::
+
+Reason for termination.
+
+State::
+
+The state for the next stream handler.
+
+== Return value
+
+The atom `ok` is always returned. It can be safely ignored.
+
+== Changelog
+
+* *2.0*: Function introduced.
+
+== Examples
+
+.Terminate the next stream handler
+[source,erlang]
+----
+terminate(StreamID, Reason, State=#state{next=Next0}) ->
+    my_termination(State),
+    cowboy_stream:terminate(StreamID, Reason, Next0).
+----
+
+== See also
+
+link:man:cowboy_stream(3)[cowboy_stream(3)],
+link:man:cowboy_stream:init(3)[cowboy_stream:init(3)],
+link:man:cowboy_stream:data(3)[cowboy_stream:data(3)],
+link:man:cowboy_stream:info(3)[cowboy_stream:info(3)],
+link:man:cowboy_stream:early_error(3)[cowboy_stream:early_error(3)]