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WebRTC Conference Japan
WebRTC DataChannel2015/2/6 13:00-13:20 @
Mist Technologies CEO/Founder / Shintaro TanakaTwitter:
@qpSHiNqp
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@qpSHiNqp Mist Technologies
http://www.mist-t.co.jp/ MistCDNP2PCDN
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WebRTC DataChannel
+
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WebRTC DataChannel
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P2P ,
ArrayBuffer, ArrayBufferView, Blob, Stringsend
WebRTC DataChannel
var peerConnection = new RTCPeerConnection(); !var dataChannel =
!
peerConnection.createDataChannel(hogehoge, dcOptions); !//
dcOptionsSCTPconfig!
dataChannel.onmesage = function(evt) { !console.log(evt.data);
!
}; !// )
createDataChannelcreateOffer/Answer!dataChannel.send(This is a test
message.); //
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1 SCTP createDataChannel2 maxRetransmitTime
maxRetransmitsReliable (TCP)
DataChannel
SCTP TCPUDP Configurable1
DTLS Payload
UDP SCTPTransport UDP
IP
WebRTC DataChannel
var dcOptions = { ! ordered: false, ! maxRetransmitTime: 3000, !
maxRetransmits: 5 !}; !var dc = ! pc.createDataChannel( ! foo,
dcOptions);
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?
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DHT () ChordWebRTC
WebRTC key:value
DataChannelinsert / retrieve
KVS DB scalablePure-P2P ()
webrtc-chord 1: DHT https://github.com/tsujio/webrtc-chord
http://ntsujio.hatenablog.com/entry/2014/07/03/221023
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P2P File APIArrayBuffersend() up
Sharefest
https://www.sharefest.me
ShareDrop http://sharedrop.io
WebDrop 2: http://wdrop.in
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String ArrayBuffer Blob ArrayBufferView
onmessage
1
Chrome 40.0 OK
OK ()
(Error) OK ArrayBuffer
Opera 24.0 OK
OK ()
(Error) OK ArrayBuffer
Firefox 34.0 OK OK OK OK Blob
- 2:
1. ChromeBlobsendonmessageArrayBuffer
BinaryPackpack BlobArrayBufferArrayBuffer
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1. UDP
Buffering & Chunk 2. SDP (Chrome)
SDP1 (b=AS:1638400)
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1. https://bloggeek.me/send-file-webrtc-data-api/ 2.
UDP65515
(SCTPreliable, localhost) Chrome Chrome
256KBDataChannelclose
66528B2chunk Firefox Firefox (?)
chunk, onmessage1 Firefox Chrome ; 16KBchunk
Chromechunkonmessage Chrome Firefox
Firefoxchunkonmessage
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DataChannel WebWeb
CDN-edge
CDN
MistCDN3: P2PCDN http://www.mist-t.co.jp/
Web
CDN
CDN
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CDN
PeerCDN, Peer5, Swarmify
StreamRoot, BemTV ()
MistCDN3: P2PCDN http://www.mist-t.co.jp/
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, WebRTC
Peer
P2PCDN3: P2PCDN
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Pure P2PP2P SkyWayPaaS webrtc-chordDHT / P2PCDNWebSkype,
Ustream
DataChannel Web ? ?
WebRTCDiscussion
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SlideShare: http://goo.gl/Xvv0JL
[email protected] []
