reconnect.coffee
1.23 KB
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unless window.Offline
throw new Error "Offline Reconnect brought in without offline.js"
rc = Offline.reconnect = {}
retryIntv = null
reset = ->
if rc.state? and rc.state isnt 'inactive'
Offline.trigger 'reconnect:stopped'
rc.state = 'inactive'
rc.remaining = rc.delay = Offline.getOption('reconnect.initialDelay') ? 3
next = ->
delay = Offline.getOption('reconnect.delay') ? Math.min(Math.ceil(rc.delay * 1.5), 3600)
rc.remaining = rc.delay = delay
tick = ->
return if rc.state is 'connecting'
rc.remaining -= 1
Offline.trigger 'reconnect:tick'
if rc.remaining is 0
tryNow()
tryNow = ->
return if rc.state isnt 'waiting'
Offline.trigger 'reconnect:connecting'
rc.state = 'connecting'
Offline.check()
down = ->
return unless Offline.getOption('reconnect')
reset()
rc.state = 'waiting'
Offline.trigger 'reconnect:started'
retryIntv = setInterval tick, 1000
up = ->
if retryIntv?
clearInterval retryIntv
reset()
nope = ->
return unless Offline.getOption('reconnect')
if rc.state is 'connecting'
Offline.trigger 'reconnect:failure'
rc.state = 'waiting'
next()
rc.tryNow = tryNow
reset()
Offline.on 'down', down
Offline.on 'confirmed-down', nope
Offline.on 'up', up