A string that is a valid IPv4 address that is owned by this
server, or "0.0.0.0" to listen on all IP addresses.
port
A number or integer that indicates the server port that should be
listened on. Note that on most Unix-like systems including Linux and Mac OS
X, port numbers smaller than 1025 require root privileges.
app
A collection of functions that define your application. See
Details.
name
A string that indicates the path for the domain socket (on
Unix-like systems) or the name of the named pipe (on Windows).
mask
If non-NULL and non-negative, this numeric value is used
to temporarily modify the process's umask while the domain socket is being
created. To ensure that only root can access the domain socket, use
strtoi("777", 8); or to allow owner and group read/write access, use
strtoi("117", 8). If the value is NULL then the process's
umask is left unchanged. (This parameter has no effect on Windows.)
Details
startServer binds the specified port, but no connections are
actually accepted. See service, which should be called
repeatedly in order to actually accept and handle connections. If the port
cannot be bound (most likely due to permissions or because it is already
bound), an error is raised.
The app parameter is where your application logic will be provided
to the server. This can be a list, environment, or reference class that
contains the following named functions/methods:
call(req)
Process the given HTTP request, and return an
HTTP response. This method should be implemented in accordance with the
Rook
specification.
onHeaders(req)
Optional. Similar to call, but occurs
when headers are received. Return NULL to continue normal
processing of the request, or a Rook response to send that response,
stop processing the request, and ask the client to close the connection.
(This can be used to implement upload size limits, for example.)
onWSOpen(ws)
Called back when a WebSocket connection is established.
The given object can be used to be notified when a message is received from
the client, to send messages to the client, etc. See WebSocket.
The startPipeServer variant can be used instead of
startServer to listen on a Unix domain socket or named pipe rather
than a TCP socket (this is not common).
Value
A handle for this server that can be passed to
stopServer to shut the server down.
providing 
.