mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-18 12:22:10 +03:00
224 lines
4.9 KiB
Plaintext
224 lines
4.9 KiB
Plaintext
|%
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:: +move: output effect
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::
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+$ move [bone card]
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:: +card: output effect payload
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::
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+$ card
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$% [%connect wire [(unit @t) (list @t)] %server]
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[%wait wire @da]
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[%http-response =raw-http-response:light]
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==
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--
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:: utilities:
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::
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|%
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::
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++ parse-request-line
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|= url=@t
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^- [[(unit @ta) site=(list @t)] args=(list [key=@t value=@t])]
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(fall (rush url ;~(plug apat:de-purl:html yque:de-purl:html)) [[~ ~] ~])
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:: +hello:
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::
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++ hello
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|= name=@t
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^- octs
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%- as-octs:mimes:html
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%- crip
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%- en-xml:html
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;html
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;head
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;title:"Hello, {<(trip name)>}"
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==
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;body
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;h1:"Hello, {<(trip name)>}"
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==
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==
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:: helper library that lets an app handle an EventSource.
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::
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:: TODO: This doesn't even attempt to deal with sequence numbers.
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::
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++ event-source
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|_ m=(map =bone last-id=@ud)
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++ abet m
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:: +start-session: called by app to start a session and send first event
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::
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:: This creates a new session where we
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::
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++ start-session
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|= [session=@ud =bone data=wall]
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^- [(list move) _m]
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::
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:- :~ :* bone %http-response
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%start 200
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:~ ['content-type' 'text/event-stream']
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['cache-control' 'no-cache']
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==
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(wall-to-output data)
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complete=%.n
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== ==
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(~(put by m) bone 0)
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:: +session-stopped: external notification that a session ended
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::
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++ session-stopped
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|= =bone
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^- _m
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::
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(~(del by m) bone)
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:: +send-message: sends a message based on the continuation
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::
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++ send-message
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|= [=bone data=wall]
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^- [(list move) _m]
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:- [bone %http-response %continue (wall-to-output data) complete=%.n]~
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(~(jab by m) bone |=(a=@ud +(a)))
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:: +wall-to-output: changes our raw text lines to a text/event-stream
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::
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++ wall-to-output
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|= =wall
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^- (unit octs)
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:- ~
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%- as-octs:mimes:html
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%- crip
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%- zing
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%+ weld
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%+ turn wall
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|= t=tape
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"data: {t}\0a"
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::
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[`tape`['\0a' ~] ~]
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--
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::
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++ part1
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^- octs
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%- as-octs:mimes:html
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%- crip
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"<html><head><title>Hello, ""
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::
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++ part2
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|= name=@t
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^- octs
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%- as-octs:mimes:html
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%- crip
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;: weld
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(trip name)
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""</title></head><body><h1>Hello, ""
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(trip name)
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""</h1>"
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"<p>Time is <span id=time></span></p>"
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::
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%- trip
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'''
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<script>
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var evtSource = new EventSource("/~server/stream", { withCredentials: true } );
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evtSource.onmessage = function(e) {
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var message = document.getElementById("time");
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message.innerHTML = e.data;
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}
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</script>
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'''
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::
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"</body></html>"
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==
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--
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|%
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::
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+$ state
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$: events=(map =bone last-id=@ud)
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==
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--
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::
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|_ [bow=bowl:gall state]
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::
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++ this .
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::
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++ prep
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|= old=(unit state)
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^- (quip move _this)
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~& %prep
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:- [`move`[ost.bow [%connect / [~ /'~server'] %server]] ~]
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?~ old
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this
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this(+<+ u.old)
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:: alerts us that we were bound. we need this because the vane calls back.
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::
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++ bound
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|= [wir=wire success=? binding=binding:light]
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~& [%bound success]
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[~ this]
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::
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++ handle-start-stream
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|= req=http-request:light
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^- (quip move _this)
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:: Start a session sending the current time
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::
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=^ moves events
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(~(start-session event-source events) 0 ost.bow ["{<now.bow>}" ~])
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::
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:_ this
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:- ^- move
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[ost.bow %wait /timer (add now.bow ~s1)]
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::
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moves
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:: +wake: responds to a %wait send from +handle-start-stream
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::
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++ wake
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|= [wir=wire ~]
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^- (quip move _this)
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?. (~(has by events) ost.bow)
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~& [%closed wir now.bow]
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[~ this]
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::
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~& [%timer-tick wir now.bow]
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::
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=^ moves events
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(~(send-message event-source events) ost.bow ["{<now.bow>}" ~])
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::
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:_ this
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:- ^- move
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[ost.bow %wait /timer (add now.bow ~s1)]
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moves
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:: +poke-handle-http-request: received on a new connection established
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::
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++ poke-handle-http-request
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|= [authenticated=? secure=? address=address:light req=http-request:light]
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^- (quip move _this)
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::
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=+ request-line=(parse-request-line url.req)
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~& [%request-line request-line]
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=/ name=@t
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=+ back-path=(flop site.request-line)
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?~ back-path
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'World'
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i.back-path
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?: =(name 'stream')
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(handle-start-stream req)
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~& [%name name]
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::
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:_ this
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:~ ^- move
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:- ost.bow
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:* %http-response
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[%start 200 ['content-type' 'text/html']~ [~ part1] %.n]
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==
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::
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^- move
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:- ost.bow
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:* %http-response
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[%continue [~ (part2 name)] %.y]
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==
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==
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:: +poke-handle-http-cancel: received when a connection was killed
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::
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++ poke-handle-http-cancel
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|= [authenticated=? secure=? address=address:light req=http-request:light]
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^- (quip move _this)
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:: the only long lived connections we keep state about are the stream ones.
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::
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=. events
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(~(session-stopped event-source events) ost.bow)
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::
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[~ this]
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--
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