The document discusses Shirasu, an open-source WebSocket server implemented in Erlang. It describes how to install and run Shirasu on an Amazon EC2 instance to provide various WebSocket services like chat, stock data streaming, and command line tools. Key points include configuring Shirasu via a YAML file to listen on port 8000 and map HTTP requests to external URLs or local commands via WebSocket.

1. WebSocket
November 2011
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2. http://j.mp/ws201111
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3. MiCHiLU Labs.
ENDOH takanao
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4. 4

5. WebSocket
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6. WebSocket
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7. HTML5
• •
• CSS3 •
• •
• 3D
•
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8. WebSocket
•
•
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9. WebSocket
shirasu.ws
WebSocket
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10. shirasu.ws
• https://github.com/michilu/shirasu
• Misultin
HTTP
• Erlang
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11. shirasu.ws
• Fedora Linux RPM
Red Hat Enterprise Linux
•
YAML
•
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12. shirasu.ws
• path
path
• HTTP
HTTP
• HTTP GET
HTTP WebSocket
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13. 13

14. • Fedora 14 Amazon EC2
• Shirasu WebSocket
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15. Amazon EC2
• AWS
• AWS
• Fedora 14
• ssh
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16. AWS
• AWS
http://j.mp/r3KAwO
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17. AWS
• EC2 US East EC2 Dashboard Launch Instance
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18. AWS
• Request Instances Wizard My AMIs
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19. AWS
• “ami-669f680f” Select
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20. AWS
• INSTANCE DETAILS Continue
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21. AWS
• INSTANCE DETAILS Continue
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22. AWS
• INSTANCE DETAILS Continue
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23. AWS
• Key Pair Key Pair
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24. AWS
• pem
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25. AWS
• CONFIGURE FIREWALL Continue
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26. AWS
• REVIEW Continue
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27. AWS
• Close
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28. AWS
• EC2 Instances
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29. AWS
• Public DNS
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30. AWS
• Security Groups default TCP Port/8000
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31. •
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32. • pem
$ chmod 600 ~/Downloads/shirasu.pem
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33. • AWS ssh
$ ssh -i ~/Downloads/shirasu.pem
ec2-user@ec2-****.compute-1.amazonaws.com
…
Are you sure you want to continue connecting
(yes/no)? yes
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34. • AWS ssh
…
Appliance: fedora-14 appliance 1.0
Hostname: ip-10-203-13-209
IP Address: 10.203.13.209
[ec2-user@ip-10-203-13-209 ~]$
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35. Amazon EC2
• shirasu RPM
•
• shirasu
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36. • shirasu RPM
EC2$ curl -O -L http://j.mp/nv9UYI
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37. • rpm
EC2$ rpm --test -ivh shirasu-0.1.2-1.fc14.i386.rpm
error: Failed dependencies:
PyYAML is needed by shirasu-0.1.2-1.fc14.i386
erlang-misultin is needed by shirasu-0.1.2-1.fc14.i386
erlang-mochiweb is needed by shirasu-0.1.2-1.fc14.i386
erlang-sasl is needed by shirasu-0.1.2-1.fc14.i386
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38. • yum
EC2$ sudo yum install -y
PyYAML erlang-misultin
erlang-mochiweb erlang-sasl
…
Complete!
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39. • rpm shirasu
EC2$ sudo rpm -ivh shirasu-0.1.2-1.fc14.i386.rpm
Preparing... ########################################### [100%]
1:shirasu ########################################### [100%]
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40. Amazon EC2
• shirasu
• WebSocket
• shirasu
• shirasu
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41. • shirasu
EC2$ sudo service shirasu start
Starting Shirasu: [ OK ]
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42. WebSocket
http://ec2-*.compute-1.amazonaws.com:8000/index.html
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43. 1. Chat
• Connect
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44. 1. Chat
• Send
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45. 2. Exchange Chart
• vs
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46. 3. Twitter Streaming
• shirasu
EC2$ sudo vi /etc/shirasu/shirasu.yaml
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47. 3. Twitter Streaming
• <SCREEN_NAME> <PASSWORD>
...
shirasu_http_stream:
/stream.twitter.com/1/statuses/sample.json:
"http://
<SCREEN_NAME>:<PASSWORD>@stream.twitter.com/1/
statuses/sample.json"
/exchange/USDJPY:
- "http://chartapi.finance.yahoo.com/instrument/
1.0/USDJPY=X/chartdata;type=quote;range=2d/csv/"
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48. 3. Twitter Streaming
• shirasu
EC2$ sudo service shirasu reload
Reloading Shirasu: [ OK ]
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49. 3. Twitter Streaming
• Twitter Streaming API WebSocket
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50. 4. Pingman
• Traceroute, Ping WebSocket
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51. • shirasu
EC2$ sudo service shirasu stop
Stopping Shirasu: [ OK ]
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52. 52

53. path
• shirasu
• ws://host:8000/chat
• “/chat” path
•
path
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54. path
Server Clients
client 1
/path
client 2
/foo client 3
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55. HTTP GET
• HTTP CSV
• http://chartapi.finance.yahoo.com/
chartapi.finance.yahoo.cominstrument/1.0/
USDJPY=X/chartdata;type=quote;range=2d/csv/
• HTTP HTTP
• http://<SCREEN_NAME>:<PASSWORD>@
stream.twitter.com/1/statuses/sample.json
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56. HTTP GET
Server Clients
HTTP GET
CSV
Twitter Streaming API
/ HTTP
client 1
/exchange
client 2
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57. CommandLine
•
• WebSocket
• $ ping -c 10 google.com
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58. HTTP GET
Server Clients
client 1
/exchange
client 2
$ ping -c 10 google.com
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59. 59

60. shirasu
• shirasu listen port
/etc/shirasu/shirasu.yaml
…
shirasu:
listen:
port: 8000
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61. HTTP GET
• shirasu_http_stream
/etc/shirasu/shirasu.yaml
…
shirasu_http_stream:
<path1>: <URL1>
<path2>:
- <URL1>
- <URL2>
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62. • shirasu_http_serve
/etc/shirasu/shirasu.yaml
…
shirasu_http_serve:
<path>: <directory path>
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63. • shirasu_commandline
/etc/shirasu/shirasu.yaml
…
shirasu_commandline:
<path1>: “traceroute google.com”
<path2>:
- “ping -c 5 google.com”
- “ping -c 10 google.com”
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64. Amazon EC2
• AWS
•
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65. AWS
• AWS
http://j.mp/r3KAwO
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66. AWS
• EC2 Instance Instance Action Terminate
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67. WebSocket
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68. WebSocket
1. Google Chrome
2.
3.
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69. WebSocket
1. Network
2. WebSocket
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70. WebSocket
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71. • WebSocket EC2
•
• shirasu
• shirasu
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72. WebSocket.JP
http://websocket.jp
WebSocket
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73. http://j.mp/o5jxmI
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