mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-07 20:31:06 -05:00
277 lines
9.8 KiB
CoffeeScript
277 lines
9.8 KiB
CoffeeScript
define [], () ->
|
|
ONEHOUR = 1000 * 60 * 60
|
|
class ConnectionManager
|
|
|
|
|
|
disconnectAfterMs: ONEHOUR * 24
|
|
|
|
lastUserAction : new Date()
|
|
|
|
constructor: (@ide, @$scope) ->
|
|
if !io?
|
|
console.error "Socket.io javascript not loaded. Please check that the real-time service is running and accessible."
|
|
@ide.socket =
|
|
on: () ->
|
|
$scope.$apply () =>
|
|
@$scope.state.error = "Could not connect to websocket server :("
|
|
return
|
|
|
|
setInterval(() =>
|
|
@disconnectIfInactive()
|
|
, ONEHOUR)
|
|
|
|
# trigger a reconnect immediately if network comes back online
|
|
window.addEventListener 'online', =>
|
|
sl_console.log "[online] browser notified online"
|
|
if !@connected
|
|
@tryReconnectWithRateLimit({force:true})
|
|
|
|
@userIsLeavingPage = false
|
|
window.addEventListener 'beforeunload', =>
|
|
@userIsLeavingPage = true
|
|
return # Don't return true or it will show a pop up
|
|
|
|
@connected = false
|
|
@userIsInactive = false
|
|
@gracefullyReconnecting = false
|
|
|
|
@$scope.connection =
|
|
reconnecting: false
|
|
# If we need to force everyone to reload the editor
|
|
forced_disconnect: false
|
|
inactive_disconnect: false
|
|
|
|
@$scope.tryReconnectNow = () =>
|
|
# user manually requested reconnection via "Try now" button
|
|
@tryReconnectWithRateLimit({force:true})
|
|
|
|
@$scope.$on 'cursor:editor:update', () =>
|
|
@lastUserAction = new Date() # time of last edit
|
|
if !@connected
|
|
# user is editing, try to reconnect
|
|
@tryReconnectWithRateLimit()
|
|
|
|
document.querySelector('body').addEventListener 'click', (e) =>
|
|
if !@connected and e.target.id != 'try-reconnect-now-button'
|
|
# user is editing, try to reconnect
|
|
@tryReconnectWithRateLimit()
|
|
|
|
@ide.socket = io.connect null,
|
|
reconnect: false
|
|
'connect timeout': 30 * 1000
|
|
"force new connection": true
|
|
|
|
# The "connect" event is the first event we get back. It only
|
|
# indicates that the websocket is connected, we still need to
|
|
# pass authentication to join a project.
|
|
|
|
@ide.socket.on "connect", () =>
|
|
sl_console.log "[socket.io connect] Connected"
|
|
|
|
# The next event we should get is an authentication response
|
|
# from the server, either "connectionAccepted" or
|
|
# "connectionRejected".
|
|
|
|
@ide.socket.on 'connectionAccepted', (message) =>
|
|
sl_console.log "[socket.io connectionAccepted] allowed to connect"
|
|
@connected = true
|
|
@gracefullyReconnecting = false
|
|
@ide.pushEvent("connected")
|
|
|
|
@$scope.$apply () =>
|
|
@$scope.connection.reconnecting = false
|
|
@$scope.connection.inactive_disconnect = false
|
|
if @$scope.state.loading
|
|
@$scope.state.load_progress = 70
|
|
|
|
# we have passed authentication so we can now join the project
|
|
setTimeout(() =>
|
|
@joinProject()
|
|
, 100)
|
|
|
|
@ide.socket.on 'connectionRejected', (err) =>
|
|
sl_console.log "[socket.io connectionRejected] session not valid or other connection error"
|
|
# we have failed authentication, usually due to an invalid session cookie
|
|
return @reportConnectionError(err)
|
|
|
|
# Alternatively the attempt to connect can fail completely, so
|
|
# we never get into the "connect" state.
|
|
|
|
@ide.socket.on "connect_failed", () =>
|
|
@connected = false
|
|
$scope.$apply () =>
|
|
@$scope.state.error = "Unable to connect, please view the <u><a href='http://sharelatex.tenderapp.com/help/kb/latex-editor/editor-connection-problems'>connection problems guide</a></u> to fix the issue."
|
|
|
|
# We can get a "disconnect" event at any point after the
|
|
# "connect" event.
|
|
|
|
@ide.socket.on 'disconnect', () =>
|
|
sl_console.log "[socket.io disconnect] Disconnected"
|
|
@connected = false
|
|
@ide.pushEvent("disconnected")
|
|
|
|
@$scope.$apply () =>
|
|
@$scope.connection.reconnecting = false
|
|
|
|
if !$scope.connection.forced_disconnect and !@userIsInactive and !@gracefullyReconnecting
|
|
@startAutoReconnectCountdown()
|
|
|
|
# Site administrators can send the forceDisconnect event to all users
|
|
|
|
@ide.socket.on 'forceDisconnect', (message) =>
|
|
@$scope.$apply () =>
|
|
@$scope.permissions.write = false
|
|
@$scope.connection.forced_disconnect = true
|
|
@ide.socket.disconnect()
|
|
@ide.showGenericMessageModal("Please Refresh", """
|
|
We're performing maintenance on ShareLaTeX and you need to refresh the editor.
|
|
Sorry for any inconvenience.
|
|
The editor will refresh in automatically in 10 seconds.
|
|
""")
|
|
setTimeout () ->
|
|
location.reload()
|
|
, 10 * 1000
|
|
|
|
@ide.socket.on "reconnectGracefully", () =>
|
|
sl_console.log "Reconnect gracefully"
|
|
@reconnectGracefully()
|
|
|
|
# Error reporting, which can reload the page if appropriate
|
|
|
|
reportConnectionError: (err) ->
|
|
sl_console.log "[socket.io] reporting connection error"
|
|
if err?.message == "not authorized" or err?.message == "invalid session"
|
|
window.location = "/login?redir=#{encodeURI(window.location.pathname)}"
|
|
else
|
|
@ide.socket.disconnect()
|
|
@ide.showGenericMessageModal("Something went wrong connecting", """
|
|
Something went wrong connecting to your project. Please refresh is this continues to happen.
|
|
""")
|
|
|
|
joinProject: () ->
|
|
sl_console.log "[joinProject] joining..."
|
|
# Note: if the "joinProject" message doesn't reach the server
|
|
# (e.g. if we are in a disconnected state at this point) the
|
|
# callback will never be executed
|
|
@ide.socket.emit 'joinProject', {
|
|
project_id: @ide.project_id
|
|
}, (err, project, permissionsLevel, protocolVersion) =>
|
|
if err?
|
|
return @reportConnectionError(err)
|
|
|
|
if @$scope.protocolVersion? and @$scope.protocolVersion != protocolVersion
|
|
location.reload(true)
|
|
|
|
@$scope.$apply () =>
|
|
@$scope.protocolVersion = protocolVersion
|
|
@$scope.project = project
|
|
@$scope.permissionsLevel = permissionsLevel
|
|
@$scope.state.load_progress = 100
|
|
@$scope.state.loading = false
|
|
@$scope.$broadcast "project:joined"
|
|
|
|
reconnectImmediately: () ->
|
|
@disconnect()
|
|
@tryReconnect()
|
|
|
|
disconnect: () ->
|
|
sl_console.log "[socket.io] disconnecting client"
|
|
@ide.socket.disconnect()
|
|
|
|
startAutoReconnectCountdown: () ->
|
|
sl_console.log "[ConnectionManager] starting autoreconnect countdown"
|
|
twoMinutes = 2 * 60 * 1000
|
|
if @lastUserAction? and new Date() - @lastUserAction > twoMinutes
|
|
# between 1 minute and 3 minutes
|
|
countdown = 60 + Math.floor(Math.random() * 120)
|
|
else
|
|
countdown = 3 + Math.floor(Math.random() * 7)
|
|
|
|
if @userIsLeavingPage #user will have pressed refresh or back etc
|
|
return
|
|
|
|
@$scope.$apply () =>
|
|
@$scope.connection.reconnecting = false
|
|
@$scope.connection.reconnection_countdown = countdown
|
|
|
|
setTimeout(=>
|
|
if !@connected
|
|
@timeoutId = setTimeout (=> @decreaseCountdown()), 1000
|
|
, 200)
|
|
|
|
cancelReconnect: () ->
|
|
# clear timeout and set to null so we know there is no countdown running
|
|
if @timeoutId?
|
|
sl_console.log "[ConnectionManager] cancelling existing reconnect timer"
|
|
clearTimeout @timeoutId
|
|
@timeoutId = null
|
|
|
|
decreaseCountdown: () ->
|
|
@timeoutId = null
|
|
return if !@$scope.connection.reconnection_countdown?
|
|
sl_console.log "[ConnectionManager] decreasing countdown", @$scope.connection.reconnection_countdown
|
|
@$scope.$apply () =>
|
|
@$scope.connection.reconnection_countdown--
|
|
|
|
if @$scope.connection.reconnection_countdown <= 0
|
|
@$scope.$apply () =>
|
|
@tryReconnect()
|
|
else
|
|
@timeoutId = setTimeout (=> @decreaseCountdown()), 1000
|
|
|
|
tryReconnect: () ->
|
|
sl_console.log "[ConnectionManager] tryReconnect"
|
|
@cancelReconnect()
|
|
delete @$scope.connection.reconnection_countdown
|
|
return if @connected
|
|
@$scope.connection.reconnecting = true
|
|
# use socket.io connect() here to make a single attempt, the
|
|
# reconnect() method makes multiple attempts
|
|
@ide.socket.socket.connect()
|
|
# record the time of the last attempt to connect
|
|
@lastConnectionAttempt = new Date()
|
|
setTimeout (=> @startAutoReconnectCountdown() if !@connected), 2000
|
|
|
|
MIN_RETRY_INTERVAL: 1000 # ms, rate limit on reconnects for user clicking "try now"
|
|
BACKGROUND_RETRY_INTERVAL : 5 * 1000 # ms, rate limit on reconnects for other user activity (e.g. cursor moves)
|
|
|
|
tryReconnectWithRateLimit: (options) ->
|
|
# bail out if the reconnect is already in progress
|
|
return if @$scope.connection?.reconnecting
|
|
# bail out if we are going to reconnect soon anyway
|
|
reconnectingSoon = @$scope.connection?.reconnection_countdown? and @$scope.connection.reconnection_countdown <= 5
|
|
clickedTryNow = options?.force # user requested reconnection
|
|
return if reconnectingSoon and not clickedTryNow
|
|
# bail out if we tried reconnecting recently
|
|
allowedInterval = if clickedTryNow then @MIN_RETRY_INTERVAL else @BACKGROUND_RETRY_INTERVAL
|
|
return if @lastConnectionAttempt? and new Date() - @lastConnectionAttempt < allowedInterval
|
|
@tryReconnect()
|
|
|
|
disconnectIfInactive: ()->
|
|
@userIsInactive = (new Date() - @lastUserAction) > @disconnectAfterMs
|
|
if @userIsInactive and @connected
|
|
@disconnect()
|
|
@$scope.$apply () =>
|
|
@$scope.connection.inactive_disconnect = true
|
|
|
|
RECONNECT_GRACEFULLY_RETRY_INTERVAL: 5000 # ms
|
|
MAX_RECONNECT_GRACEFULLY_INTERVAL: 60 * 5 * 1000 # 5 minutes
|
|
reconnectGracefully: () ->
|
|
@reconnectGracefullyStarted ?= new Date()
|
|
userIsInactive = (new Date() - @lastUserAction) > @RECONNECT_GRACEFULLY_RETRY_INTERVAL
|
|
maxIntervalReached = (new Date() - @reconnectGracefullyStarted) > @MAX_RECONNECT_GRACEFULLY_INTERVAL
|
|
if userIsInactive or maxIntervalReached
|
|
sl_console.log "[reconnectGracefully] User didn't do anything for last 5 seconds, reconnecting"
|
|
@_reconnectGracefullyNow()
|
|
else
|
|
sl_console.log "[reconnectGracefully] User is working, will try again in 5 seconds"
|
|
setTimeout () =>
|
|
@reconnectGracefully()
|
|
, @RECONNECT_GRACEFULLY_RETRY_INTERVAL
|
|
|
|
_reconnectGracefullyNow: () ->
|
|
@gracefullyReconnecting = true
|
|
@reconnectGracefullyStarted = null
|
|
# Clear cookie so we don't go to the same backend server
|
|
$.cookie("SERVERID", "", { expires: -1, path: "/" })
|
|
@reconnectImmediately()
|