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y 


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. 9LT UF. 3ROE EOP y y 6 d

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hu y y BC@= r s y

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y

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y HHR HHR y y uy /01 y d y d

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HOST GUEST GUEST GUEST

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bo d o 4OGRPLG y ( 5NUHTPPT y va L>Auva s te a < =7 y ) - - n n 5NUHTPPT L Ld

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ls HOST GUEST GUEST GUEST Πϯλʔωοτ

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=4B b HOST GUEST GUEST GUEST Πϯλʔωοτ NAT NAT NAT NAT

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=4B b HOST GUEST GUEST GUEST TURN
 Server NAT NAT NAT NAT

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=4B b . BC@= =4B b o BC@= s BC@=. BRE HRSEN CSLO @HNEW ERPUOG =4B @ 6 ++ t o y HF@B6y s BC@=y HF@B6 y d l

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HOST TURN
 Server 1. ίϯτϩʔϧϙʔτʹ઀ଓ 2. ϦϨʔϙʔτ࡞੒ϦΫΤετ GUEST 3. ϦϨʔϙʔτʹ઀ଓ 4. ϦϨʔϙʔτʹ઀ଓ BC@= . :>ABu9C7ABd d t

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BC@= . :>ABu9C7ABd d t HOST TURN
 Server 1. ίϯτϩʔϧϙʔτʹ઀ଓ 2. ϦϨʔϙʔτ࡞੒ϦΫΤετ GUEST 3. ϦϨʔϙʔτʹ઀ଓ 4. ϦϨʔϙʔτʹ઀ଓ 5. 4 ͱ઀ଓͰ͖ΔϙʔτΛ௨஌ 6. 4 ͱ઀ଓͰ͖Δϙʔτʹ઀ଓ

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BC@= . :>ABu9C7ABd d o HOST TURN
 Server GUEST ଴ͪड͚༻઀ଓ GUESTͱͷϦϨʔ઀ଓ HOSTͱͷϦϨʔ઀ଓ

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y y• HOST GUEST GUEST GUEST TURN
 Server

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y y t loue y yt

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y y HOST GUEST GUEST GUEST TURN
 Server γϣοτೖྗ

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y y HOST GUEST GUEST GUEST TURN
 Server TURNServer͕ HOSTʹύέοτΛϦϨʔ

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y y HOST GUEST GUEST GUEST TURN
 Server ଞͷGUESTʹ΋఻͑ΔͨΊ HOST͕TURNServer΁ϦϨʔ

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y y HOST GUEST GUEST GUEST TURN
 Server TURNServer͕
 GUESTʹύέοτΛϦϨʔ

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y

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y ) y va s 6 t) • ls y 
 ls ) • • y t y yt • pg g y • RLOTI d bsfp

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y y ) + ls uls ls y 
 o y y o tv s

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duaik lo