Network System Laboratory - Backup source of Second Life/Protocol/UDP(No. 5)

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* Second Life UDP Protocols [#l5a84492]

** UDP パケットの構造[#n36a2c2e]
- 参考
-- http://lib.openmetaverse.org/wiki/Protocol_%28network%29
-- http://wiki.secondlife.com/wiki/Packet_Layout

- Second Life のUDPパケットでは Big Endianと Little Endian が混在している．要注意．
- 以下，特に断らない場合は1Byte = 8bit = 1octet として記述 （一般的には 1Byte=8bit とは限らない）

**** ''KK ZZ ZZ ZZ ZZ HH [MM MM ...] LL [LL LL LL] 　ボディ部''[#s1d7c544]

- ''KK'' パケット種別．以下のオクテットの論理和 (1octet)
 #define MSG_APPENDED_ACKS		0x10
 #define MSG_RESENT			0x20
 #define MSG_RELIABLE			0x40
 #define MSG_ZEROCODED			0x80
-- [[MSG_APPENDED_ACKS>Second Life/Protocol/UDP/MSG_APPENDED_ACKS]]： ボディの最後にACKデータが追加されている．
-- MSG_RESENT： 再送パケット
-- MSG_RELIABLE： ACKの返答を要求するパケット
-- MSG_ZEROCODED： ボディ部は 0x00 の連長圧縮で圧縮されている

- ''ZZ ZZ ZZ ZZ''  1から始まるパケットのシーケンス番号（パケット番号） (4octet) ''Big Endien''
- ''HH''  エクストラ（拡張）ヘッダの長さ(オクテット単位） (1octet)
- ''[MM MM ....]''  エクストラ（拡張）ヘッダ (長さは ''HH'' に依存)
- ''LL [LL LL LL]''  プロトコル番号（ボディの種別）
 Fixed:  0xFF 0xFF 0xFF XX            XX は任意のオクテット
 Low:    0xFF 0xFF XX XX
 Medium: 0xFF XX
 High:   XX

*** サンプル [#afe88bef]
 S->P [6983]: 0xc0 seq = 795 UDP message is  Low 1     TestMessage
 c0 00 00 03 1b 00 ff ff 00 01 9e 7a de a0 42 de    . . . . . . . . . . . z . . B .
 67 48 65 8a 5a b1 a4 fe 20 47 95 00 01 ff 00 01    g H e . Z . . .   G . . . . . .
 c2 28 d1 cf 4b 5d 4b a8 84 f4 89 9a 07 96 aa 97    . ( . . K ] K . . . . . . . . .
 90 00 01 81 4a eb ad d3 34 c1 25 76 f7 dc 97 42    . . . . J . . . 4 . % v . . . B
 04 32 0d 88 00 01 63 ce e0 35 45 ca ff 4d bf 16    . 2 . . . . c . . 5 E . . M . .
 3d de d8 b5 80 e6 84 00 01 e1 53 35 6f ca 1e 63    = . . . . . . . . . S 5 o . . c
 ...............................................

 c0                                                パケット種別 (MSG_RELIABLE | MSG_ZEROCODED)
 00 00 03 1b                                       シーケンス番号 (795) Big Endian
 00                                                拡張ヘッダの長さ (0)
 ff ff 00 01                                       プロトコル番号 (Low 1: TestMessage)
 9e 7a de a0 42 de 67 48 65 8a 5a b1 a4 fe 20 47   ボディ
 ...............................................

** 主な UDPパケット [#wf666a31]
- 参考： http://lib.openmetaverse.org/template/
- カテゴリー(High, Medium, Low, Fixed) は処理の優先順位か？

*** High [#c4fd1854]
- 008 [08] [[RequestImage>./RequestImage]]
- 009 [09] [[ImageData>./ImageData]]
- 010 [0A] [[ImagePacket>./ImagePacket]]
- 018 [12] [[SendXferPacket>./SendXferPacket]]
- 023 [17] [[ParcelProperties>./ParcelProperties]]

*** Medium [#d9ed2b1d]
- 007 [FF 07] [[CrossedRegion>Second Life/Protocol/UDP/CrossedRegion]]

*** Low [#hbb6770b]
- 001 [FF FF 00 01] [[TestMessage>./TestMessage]]
- 069 [FF FF 00 45] [[TeleportFinish>./TeleportFinish]]
- 140 [FF FF 00 8C] [[SimStats>./SimStats]]
- 148 [FF FF 00 94] [[RegionHandshake>./RegionHandshake]]
- 151 [FF FF 00 97] [[EnableSimulator>./EnableSimulator]]
- 152 [FF FF 00 98] [[DisableSimulator>./DisableSimulator]]
- 156 [FF FF 00 9C] [[RequestXfer>./RequestXfer]]
- 163 [FF FF 00 A3] [[KickUser>./KickUser]]
- 174 [FF FF 00 AE] [[AvatarPropertiesUpdate>./AvatarPropertiesUpdate]]
- 250 [FF FF 00 FA] [[AgentMovementComplete>./AgentMovementComplete]]
- 252 [FF FF 00 FC] [[LogoutRequest>./LogoutRequest]]
- 262 [FF FF 01 06] [[MuteListRequest>./MuteListRequest]]
- 263 [FF FF 01 07] [[UpdateMuteListEntry>./UpdateMuteListEntry]]
- 264 [FF FF 01 08] [[RemoveMuteListEntry>./RemoveMuteListEntry]]
- 318 [FF FF 01 3E] [[MuteListUpdate>./MuteListUpdate]]
- 409 [FF FF 01 99] [[MapBlockReply>./MapBlockReply]]

*** Fixed [#k9c9b858]
- 251 [FF FF FF FB] [[PacketAck>./PacketAck]]
#br

*** etc.etc. [#ub380996]
- [[MSG_APPENDED_ACKS>Second Life/Protocol/UDP/MSG_APPENDED_ACKS]]
- [[Mute List>./MuteList]]
#br

** Indexes [#aa5b25ca]
#ls2

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Backup source of Second Life/Protocol/UDP(No. All)
- 1: 2008-12-21 (Sun) 03:29:18 iseki
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- 4: 2010-08-30 (Mon) 10:29:40 iseki
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- 6: 2010-11-02 (Tue) 20:08:56 iseki
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- 8: 2011-08-06 (Sat) 15:04:08 iseki
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- 10: 2013-01-06 (Sun) 01:31:27 iseki
- Cur: 2016-04-05 (Tue) 01:30:49 iseki

Backup source of Second Life/Protocol/UDP (No. 5)

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