Client API (W3C) • (simple) JavaScript API • Network Protocol (IETF) • Under development • draft-hixie-thewebsocketprotocol-76 • ... • draft-ietf-hybi-thewebsocketprotocol-07* WebSocket Standard 32! Copyright © 2011 – Kaazing Corporation WS Protocol / Handshake !"#$%&'()$*##+%,-,$ *./)0$/12312-14(5671-&.5$ 8692(:10$websocket$ ;.<<1&=.<0$8692(:1$ >1&?WebSocket?@1A0$:!'7B*C'DEF/G>FHDIJKGLMM$ >1&?WebSocket?N2O9O<0$'P60%%14(5671-&.5$ >1&?WebSocket?+2.).&.70$&'()Q$/H612&'()$ >1&?WebSocket?R12/O.<0$S$ $ $ $ $*##+%,-,$,T,$>UO)&'O<9$+2.).&.7/$ $ $ $8692(:10$websocket$ $ $ $;.<<1&=.<0$8692(:1$ $ $ $>1&?WebSocket?V&&16)0$/W6+XYFO#4(LZ[\!]]'G^D@_4N.M$ $ $ $>1&?WebSocket?+2.).&.70$&'()$ 33! Copyright © 2011 – Kaazing Corporation • Connection established by upgrading from the HTTP protocol to the WebSocket protocol using the same TCP connection • Once upgraded, WebSocket data frames can be sent back and forth between the client and the server in full-duplex mode • Frames can be sent full-duplex, in both directions at the same time • Each frame of data: • Starts with a 0x00 byte and ends with a 0xFF byte • Contains UTF-8 data in between: \0x00Hello, WebSocket\0xff • There is no defined maximum size, but JavaScript does not allow >4GB of data) WebSocket Traffic 34! Copyright © 2011 – Kaazing Corporation WebSocket Less Overhead... A lot less!!! \0x00Hello, WebSocket\0xff 35! Copyright © 2011 – Kaazing Corporation WebSocket Client API // Create new WebSocket var mySocket = new WebSocket("ws://echo.websockets.org"); // Attach listeners mySocket.onmessage = function(evt) { doSomeFancyDhtml(evt.data); }; mySocket.onopen = function(evt) {...}; mySocket.onclose = function(evt) {...}; mySocket.onerror = function(evt) {...}; JavaScript 36! Copyright © 2011 – Kaazing Corporation WebSocket Client API // Send data... mySocket.send(”HTML5 WebSocket rocks! "); // Close WebSocket mySocket.close(); JavaScript
ejug
ronnnnn
.jpeg){kind=avatar}
arthur1
akexorcist
hiyanger
smt7174
trishagee
shift_evolve
miu_crescent
sudoakiy
oracle4engineer
gumamon
isaoshimizu
irinanazarova
dougneiner
maggiecrowley
danielanewman
phodgson
morganepeng
tammyeverts
marktimemedia
tanoku
samanthasiow
trallard
lara
