Router と WebSocket

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第2回CloudFoundry輪読会講演資料

cloud foundryのrouterとかを弄って、WebSocket動くようにしてみましたよ!!というお話

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  • Router と WebSocket

    1. 1. Router WebSocket 2011/11/17(thu) 2 CloudFoundry
    2. 2. • (@komasshu)• WebSocket• Google API Expert (HTML5)• Microsoft Valuable Professional (IE)
    3. 3. CloudFoundryWebSocket ...
    4. 4. WebSocket• HTML5 API/Protocol• Web •
    5. 5. • Web(port=80) VPN • SSL-VPN
    6. 6. Handshake
    7. 7. Handshake
    8. 8. HandshakeFrames
    9. 9. point : UpgradeRequest Header (client => server) GET /chat HTTP/1.1 Host: server.example.com Upgrade: websocketResponse Header (server => client) HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Upgrade HTTP WebSocket
    10. 10. HTTP Compatible• VPN • FW, Proxy • HTTP/1.1 • • Web VPN
    11. 11. http://www.ericom.com/html5_client_vmware_view.asp http://www.publickey1.jp/blog/11/webhtml5.html
    12. 12. CloudFoundry WebSocket orz• why? • nginx 2 • router HTTP/1.1 rails sinatra nginx router node.js DEA
    13. 13. • nginx • zip Access log HTTPS• router • URL routing URL routing unix domain tcp socket socket rails (tcp socket ) 80/443 sinatra nginx router node.js DEA
    14. 14. WebSocket nginx • Request HTTP (502) • tcp_proxy Patch •https://github.com/yaoweibin/nginx_tcp_proxy_module
    15. 15. nginx.conftcp { upstream vcap_router { server unix:/tmp/router.sock;# server 127.0.0.1:2222;# check interval=3000 rise=2 fall=5 timeout=1000; } tcp_nodelay off; server { listen 80; server_name _; proxy_read_timeout 200000; proxy_send_timeout 200000; proxy_pass vcap_router; }}
    16. 16. WebSocket router• HTTP Request/Response HTTP• WebSocket Frames• HTTP
    17. 17. dialog of router.rb request Header router request/sec Router on_headers _complete() unix module module node.jsnginx domain TCP socket socket ClientConnection AppConnection on_headers _complete() response Header response latency
    18. 18. WebSocketUpgrade: websocket proof of conceptWebsocketConnection router module TCP socket node.js on_headers AppConnection _complete() on_headers unix module _complete() nginx domain socket ClientConnection module WebsocketConne TCP socket node.js ction WS
    19. 19. client_connection.rbdef on_headers_complete(headers) .... # [kom] Check connection mode(websocket or not) @is_websocket = (headers[UPGRADE_HEADER] == WEBSOCKET) ? true : false Router.log.info "@is_websocket : #{@is_websocket}" .... if (@is_websocket) host, port = @droplet[:host], @droplet[:port] @bound_app_conn = EM.connect(host, port, WebsocketConnection, self,@headers, @droplet) return end ....end
    20. 20. websocket_connection.rbmodule WebsocketConnection def initialize client, header, droplet @client, @header, @droplet = client, header, droplet end def connection_completed send_data(@header) end def receive_data(data) @client.send_data(data) end def terminate end orzend
    21. 21. Demo (echo server)
    22. 22. • proof of concept• production• zip, ssl NG• WebSocketConnection• :)
    23. 23. Thank you!!http://twitter.com/komasshu
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