2019 - COSCUP - 復活一個 Browser Game - Unlight 開源事件

Transcript

1. Revive a Browser Game Server The Open Unlight Project Photo by Artem Labunsky on Unsplash
2. WEB DEVELOPER GAME DEVELOPER ૵ ࣌ ݭ໵ @elct9620
5. Ruby + ActionScript 3
7. Adobe Flash IDE is unavailable!
8. mxmlc src/Unlight.mxml
9. Unlight can be compiled by Flex SDK 3.x
10. Failed because missing files
12. Setup environment takes much time
13. The source code always become dirty
15. •Always reset client compile environment •Patches / Rework •Customizable Server/Client •Adjustable Docker compose configure
17. Secure Remote Password not matched!
19. http://srp.stanford.edu/design.html
20. http://srp.stanford.edu/design.html Step 1. Client create PublicKey A
21. http://srp.stanford.edu/design.html Step 2. Server create PublicKey B and send it with Salt to user
22. http://srp.stanford.edu/design.html Step 3~. Compute SessionKey and verify other's Matcher
33. (／‵Д′)／~ ╧╧
36. 24 Core CPU 24G RAM 98K IOPS SSD 300M/100M FTTH Sponsor by Poka
37. Feel "LAG" after 500 online players
40. (0.214518s) SELECT * FROM `card_inventories` WHERE ( `card_inventories`. `chara_card_deck_id` = 2971)
41. src/model/card_inventory.rb
43. ALTER TABLE card_inventories ADD INDEX chara_card_deck_id (chara_card_deck_id)
45. About 100x faster
47. About 1000 online players without "LAG"
48. •Adjust Cpuset to fix database on specify cores •Adjust Swappiness to prevent use disk •Adjust Full Table Index to cache small table
49. •Move Database outside Docker •Enable SR-IOV to use physics network card •Add partition to database
50. Estimate capability > 3000 online players
51. •DAU about 500 online players •Rows grow fast
 Only two weeks we have 10M ~ 20M rows •1 Developer
 1 DevOps
 1 Player Support
52. But how to hosting this game?
53. Add CloudWatch to analytic online players
54. Open Unlight's Reword/Customize
57. Open Unlight's Allow add customize gems
58. Tricks to allow Docker add optional files
59. customize/server/src/authentication.rb
60. customize/server/src/payment.ru
62. Use Rack to implement API server
64. Extend CLI to serve in docker
67. Hosting a game have to support players resolve problems
68. SmartLook can replay player session to debug
69. ZenDesk can help players in one central system
70. •ZenDesk - Player support •SmartLook - Client Debug (for HTML5) •Asana - Issue Tracking •AWS - CDN/Monitoring •Discord - Co-working
71. The HTML5 version?
72. Flash will be removed at 2020 in Chrome
73. The Unlight client is Flash
74. But no one knows CPA will maintenance or not
75. From TCPSocket to WebSocket
76. Client Server Packet The TCPSocket send packet directly
77. Client Server Packet The WebSocket send packet with WebSocket wrapper WebSocket
78. Unlight use EventMachine handles connection
79. Comment out all EventMachine connection
80. Implement a Rack middleware with WebSocket gem
81. Add Rack's .ru and it can be served by Puma or Unicorn
82. We already migrated 90% server to WebSocket
83. How the client communicates with the server?
84. It convert data to a command
85. Each packet should have a header to describe command
86. JavaScript can create 2 byte struct?
87. new Int8Array([0x00, 0x03, 0x00, 0x01, 0x00, 0x0a])
88. (／‵Д′)／~ ╧╧
89. You can learn how the C programmer think by Unlight's Ruby source code
90. From Golang to WebAssembly
91. func AuthCmd(name string) []byte { buffer := new(bytes.Buffer) binary.Write(buffer, binary.BigEndian, uint16(1)) binary.Write(buffer, binary.BigEndian, []byte(name)) return buffer.Bytes() }
92. GOOS=js GOARCH=wasm go build -o libul.go
93. Convert Unlight to HTML5 is possible!
94. What the next?
95. Test! Test! Test!
96. We are trying to learn to host a game server as a programmer
97. And last ...
98. New security problem is coming!
99. Thanks