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listen function (a wrapper around
httpuv::service or later::run_now) added to
for more convenient use of JRC apps in Jupyter Notebooks.onlyServer argument is added to the
openPage function to prevent opening a browser
tab.
Bug in the thisArg argument of the
callFunction function is fixed.
setLimits now used to set any kind of restriction to
memory usage. It replaces numberOfConnections and
limitStorage. Now, also number of processed messages per
second or the amount of processed information can be limited, so that
the app will not get stuck after receiving too many messages.
onClose callback added to the openPage
function. It allows to specify actions to be taken when a WebSocket
connection is closed (user closes the page).
getPort added as a function and as a method of class
App to query for a port number of the running app.
sendData now handles the NAs properly.
Issue with failing to establish a WebSocket connection to a complex address fixed.
allowedDirectories argument is added to the
openPage function (and also the corresponding function and
method allowDirectories). Now user can specify the list of
directories that can be accessed by server. By default, it’s the
rootDirectory, the current working directory and a
temporary directory for the current R session.
Issue with incorrect serving of the file types that are supposed to be send as bytes fixed.
jrc now imports R.utils for more robust
paths handling.
Issue with file separator in Windows fixed.
Now app is stored in packages namespace immediately after
initialization. This fixes a problem with wrapper functions inside
onStart.
jrc now supports multiple connections to a single
server and thus can be used to create server apps that are intended to
be used by multiple clients simultaneously. This change requires some
additional arguments in some of the functions as well as several new
ones. However, backwards compatibility is maintained.
jrc now depends on R6 and each app is
represented with a single object. One can manage the app with methods of
this object, which allows to run several apps inside one R session. For
more information, check man pages of classes App and
Session.
jrc now works properly on RStudio Server
sendData no longer crashes when
keepAsVector = FALSE and some NAs are present.
jrc now works with httpuv < 1.5.2
(it no longer depends on httpuv::randomPort()).
jrc now imports mime for defining
content type when serving a page.
Now most of the request from the server must be manually
authorized in the R session to prevent misuse of publicly available apps
based on jrc. Functions authorize,
allowVariables, allowFunctions,
limitStorage have been added. Check their man pages for
more information.
openPage now have browser argument,
which allows to specify a browser to open a page (previously the default
browser was used with no alternatives).
Function getPage is added. This function returns the
main page-handling object with all the information about current
session.
Function callFunction added on both R and JavaScript
sides. It allows to call a function by name, list of arguments and name
of variable to which assign the result.
Now port for the local server is selected by
httpuv::randomPort() function. User can also provide a port
number as an argument to the openPage function.
sendData now has argument rowwise which
allows to send matrices and data.frames to JavaScript not only rowwise
(default), but also columnwise.
If in sendData keepAsVector = FALSE
jrc now checks recursively for any arrays of length 1 to
replace them with scalars (important for lists).
Some bugs with changing variable types in
jrc.sendData fixed.
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.