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1 11 M u l t i c a s t i n g B r o a d c a s t i n g Wi n 32 Wi n s o c k I P AT M I P AT M I P AT M A P I Winsock 1 Winsock 2 Wi n s o c k I P Wi n s o c k Winsock 1 Winsock 2 Windows CE 2.1 Windows 95 Windows 98 Windows NT 4 Windows Windows CE I P I P Windows 98 Windows 2000 ATM Wi n s o c k Win98 SE AT M I P AT M AT M I P N I C I P 1998 I P 11.1 C o n t r o l P l a n e Data Plane R o o t e d N o n r o o t e d c _ r o o t c _ l e a f c _ r o o t c _ l e a f c _ l e a f AT M

2 262 Winsock API c _ l e a f c _ r o o t I P 11-1 c _ r o o t c _ l e a f c_root c_leaf c_leaf c_leaf c_leaf c_leaf c_leaf c_leaf 11-1 d _ r o o t d _ r o o t d _ l e a f d _ l e a f d _ r o o t d _ r o o t d _ l e a f AT M 11-2 d _ r o o t a b c d _ l e a f d _ l e a f x y z d _ r o o t a b c x y z

3 I P AT M I P Wi n s o c k d_root d_leaf d_leaf d_leaf d_leaf d_leaf xyz d_leaf d_leaf W S A E n u m P r o t o c o l s W S A P R O TO C O L _ I N F O d w S e r v i c e F l a g s 1 X P 1 _ M U LT I P O I N T _ C O N T R O L _ P L A N E X P 1 _ M U LT I P O I N T _ D ATA _ P L A N E

4 264 Winsock API IP I P I P I P D I P I G M P RFC 1700 I n t e r n e t I A N A 11-1 RFC R I P W I N S T C P / I P I P I P I G M P I P I n t e r n e t Internet Gateway Management Protocol, I G M P Internet I G M P I G M P I P I G M P A B I G M P I G M P I G M P I G M P

5 T T L I P X T T L 2 T T L 1 T T L 1 T T L 0 T T L I G M P Wi n s o c k A B A B I G M P 2 Windows 98 Windows 2000 I G M P 2 Windows 95 Winsock 2 I G M P 2 Windows NT 4 Service Pack 4 S P 4 I G M P 2 S P 1 I G M P 1 2 RFC 111 RFC IP I P I P Winsock 1 Winsock 2 A P I Winsock 1 I P 1) s o c k e t A F _ I N E T S O C K _ D G R A M s o c k e t 2) 3) s e t s o c k o p t I P _ A D D _ M E M B E R S H I P

6 266 Winsock API Winsock 2 1 ) 2 ) 3 W S A J o i n L e a f s e t s o c k o p t Wi n s o c k I P U D P I P U D P IP I P Wi n d o w s 2. 1 Windows CE I P I P M A C I P I P M A C RFC 1700 Winsock API Windows 95 Windows NT 4 M A C Windows 98 Windows Windows 98 W S A E N O B U F S Windows 2000 Windows 2000 Windows 95 Windows NT 4 M A C 11.3 ATM Wi n s o c k AT M I P AT M c _ r o o t I P AT M AT I P AT M I P I P AT M AT M I P I P I P AT M AT M

7 AT M I P I P I I G M P AT M AT M L A N L A N E L A N E AT M I P X / S P X N e t B E U I T C P / I P I G M P I C M P I I P I G M P AT M Wi n d o w s 2000 AT M I P AT M AT M ATM AT M 1) W S A S o c k e t A F _ AT M W S A _ F L A G _ M U LT I P O I N T _ C _ L E A F W S A _ F L A G _ M U LT I P O I N T _ D _ L E A F 2) AT M b i n d 3) l i s t e n 4) a c c e p t W S A A c c e p t I / O Winsock I/O 8 AT M Windows 98 Windows 2000 ATM AT M ATM AT M 1) W S A S o c k e t A F _ AT M W S A _ F L A G _ M U LT I P O I N T _ C _ R O O T W S A _ F L A G _ M U LT I P O I N T _ D _ R O O T 2) AT M W S A J o i n L e a f W S A J o i n L e a f

8 268 Winsock API 11.4 Winsock Wi n d o w s Wi n s o c k A P I I P Wi n s o c k Wi n s o c k Winsock 1 Winsock 2 W S A J o i n L e a f Winsock 1 B e r k e l e y Winsock 1 Winsock 1 I P s e t s o c k o p t I P _ A D D _ M E M B E R S H I P I P _ D R O P _ M E M B E R S H I P i p _ m r e q i m r _ m u l t i a d d r i m r _ i n t e r f a c e i m r _ i n t e r f a c e I N A D D R _ A N Y I P I s e t s o c k o p t I P _ D R O P _ M E M B E R S H I P i p _ m r e q Winsock 1 IP 11-1 I P

9 Multicast Loopback I P 11-1 Winsock 1.1

10 270 Winsock API

11 11 271

12 272 Winsock API

13 Winsock 1 Winsock 1.1 Wi n s o c k. h W s o c k 32. l i b Winsock 2 Wi n s o c k. h W s 2 t c p i p. h W s 2 _ 3 2. l i b I P _ A D D _ M E M B E R S H I P I P _ D R O P _ M E M B E R S H I P I P _ M U LT I C A S T _ I F I P _ M U LT I C A S T _ L O O P Stephen Deering Wi n s o c k Winsock 2 Wi n s o c k w s o c k 32. l i b Winsock 2

14 274 Winsock API Winsock 2 Winsock 2 Winsock 1 Q o S Wi n s o c k W S A J o i n L e a f s W S A S o c k e t W S A J o i n L e a f W S A E I N VA L W S A _ F L A G _ M U LT I P O I N T _ C _ R O O T W S A _ F L A G _ M U LT I P O I N T _ C _ L E A F W S A _ F L A G _ M U LT I P O I N T _ D _ R O O T W S A _ F L A G _ M U LT I P O I N T _ D _ L E A F S O C K A D D R AT M I P n a m e l e n n a m e l p C a l l e r D a t a l p C a l l e e D a t a Wi n d o w s N U L L l p S Q O S F L O W S P E C 12 Q o S l p G Q O S Wi n d o w s d w F l a g s J L _ S E N D E R _ O N LY J L _ R E C E I V E R _ O N LY J L _ B O T Y S O C K E T W S A J o i n L e a f W S A A s y n c S e l e c t W S A E v e n t S e l e c t s F D _ C O N N E C T F D _ C O N N E C T

15 n a m e 11-2 F D _ C O N N E C T c l o s e s o c k e t W S A J o i n L e a f i o c t l s o c k e t F I O N B I O W S A J o i n L e a f W S A E W O U L D B L O C K I / O F D _ C O N N E C T 8 W S A A s y n c S e l e c t W S A E v e n t S e l e c t I / O W S A J o i n L e a f Wi n s o c k W S A J o i n L e a f n a m e c _ r o o t W S A J o i n L e a f I / O W S A E v e n t S e l e c t W S A A s y n c S e l e c t F D _ C L O S E c _ r o o t W S A J o i n L e a f AT M c l o s e s o c k e t W S A J o i n L e a f n a m e ATM UNI4.0 I P W S A J o i n L e a f s W S A J o i n L e a f b i n d l i s t e n a c c e p t / W S A A c c e p t c l o s e s o c k e t 11-2 n a m e F D _ C O N N E C T a c c e p t W S A A c c e p t c _ l e a f W S A J o i n L e a f c _ r o o t

16 276 Winsock API W S A J o i n L e a f W S A J o i n L e a f W S A S o c k e t W S A J o i n L e a f c l o s e s o c k e t c _ r o o t c l o s e s o c k e t I / O c _ l e a f F D _ C L O S E 11-2 WSAJoinLeaf s n a m e F D _ C O N N E C T c _ r o o t F D _ C L O S E c _ l e a f s c _ r o o t N A N / A N / A c _ l e a f 1. Winsock 2 IP s 11-2 M c a s t w s 2. c W S A J o i n L e a f I P Winsock 1 IP M c a s t w s 1. c W S A J o i n L e a f 11-2 IP

17 11 277

18 278 Winsock API

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20 280 Winsock API

21 Winsock 2 AT M 11-3 M c a s t a t m. c AT M S u p p o r t. c G e t AT M A d d r e s s AT M 11-3 S e r v e r W S A J o i n L e a f W S A S e n d AT M W S A J o i n L e a f W S A J o i n L e a f C l i e n t a c c e p t W S A A c c e p t 11-3 AT M

22 282 Winsock API

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24 284 Winsock API

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26 286 Winsock API

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28 288 Winsock API Winsock Winsock 1 Winsock 2 I P

29 I P _ M U LT I C A S T _ T T L I P _ M U LT I C A S T _ I F I P _ M U LT I C A S T _ L O O P Winsock 1 Winsock 2 I P 1. IP_MULT I C A S T _ T T L T T L T T 1 T T L T T L T T L 1 1 T T L T T L s e t s o c k o p t l e v e l I P P R O TO _ I P o p t n a m e I P _ M U LT I C A S T _ T T L o p t v a l T T L T T W S A I o c t l i o c t l s o c k e t S I O _ M U LT I C A S T _ S C O P E AT M T T L AT M c _ r o o t 2. IP_MULT I C A S T _ I F I P o p t v a l

30 290 Winsock API s I P AT M W S A J o i n L e a f c _ r o o t AT M a c c e p t W S A A c c e p t 3. IP_MULT I C A S T _ L O O P r e c v f r o m I P _ M U T L I C A S T _ L O O P o p t v a l W S A I o c t l i o c t l s o c k e t i o c t l S I O _ M U LT I P O I N T _ L O O P B A C K Windows 95 Windows 98 Windows NT 4 W S A E N O P R O TO O P T AT M AT M c _ r o o t c _ l e a f c _ r o o t L o o p b a c k R A S Wi n d o w s Windows NT 4 I G M P Windows NT 4 Windows 2000 R A S I G M P

31 I P AT M Winsock API Winsock 1 Winsock 2 W S A J o i n L e a f

2.2016 年中央国家机关政府采购中心网上竞价品目表中央国家机关政府采购中心 2016 年 7 月 21 日 - 2 -

2.2016 年中央国家机关政府采购中心网上竞价品目表中央国家机关政府采购中心 2016 年 7 月 21 日 - 2 - 国机采字 2016 13 号关于印发中央国家机关政府采购中心网上竞价管理办法的通知为进一步规范网上竞价操作行为, 提高采购质量和效率, 强化合同和履约管理, 依据中华人民共和国政府采购法 ( 以下简称政府采购法 ) 中华人民共和