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)551࠷଎࣮૷W IUUQESBGUରԠ൛ !TZV@DSFBN

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໨࣍ w )551ͷ؆୯ͳઆ໌ w )551Yͷ͓͞Β͍ w )551ͷಛ௃ w )551࠷଎࣮૷ͷղઆ w ࠷௿ݶߦ͏΂͖࣮૷ʹ͍ͭͯ w ಈ࡞֬ೝํ๏ w ֤छࢿྉ

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)551ͷ ؆୯ͳઆ໌

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)551YͷϦΫΤετ w ݪଇDPOOFDUJPOSFRVFTU w Ұൠతͳϒϥ΢β͸ಉ࣌ʹίωΫγϣϯ͔͠։͔ͳ͍

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)551ͷ1JQFMJOJOH w ίωΫγϣϯͰෳ਺ϦΫΤετΛ౤͛ΒΕΔ w ͨͩ͠ॱংΛकΒͳ͚Ε͹ͳΒͳ͍ w ͜ͷ੍໿ͷͨΊϨεϙϯε͕ϒϩοΫ͢ΔةݥੑΞϦ )FBEPG-JOF#MPDLJOH server client 1 1.,GET,/hoge.gif 2.,GET,/fuga.html 3.,GET,/piyo.css

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)551Yͷϔομ w ςΩετͰϔομΛ΍ΓऔΓ w ϔομͱϘσΟͷ۠੾Γ͸ۭվߦ w 6TFS"HBOUͳͲ΄ͱΜͲมΘΒͳ͍ͷʹԿ౓΋ૹ৴͢Δඞཁ͕͋Γɺ৑௕ (&5)551 )PTUMPDBMIPTU "DDFQU $3-' )5510, 4FSWFSOHJOY %BUF'SJ 4FQ(.5 $POUFOU5ZQFUFYUIUNM $POUFOU-FOHUI -BTU.PEJpFE'SJ 4FQ(.5 $POOFDUJPOLFFQBMJWF &5BHBGF "DDFQU3BOHFTCZUFT $3-' ϦΫΤετϔομͷྫ Ϩεϙϯεϔομͷྫ

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)551ͷಛ௃ w ࿦ཧతͳίωΫγϣϯ ετϦʔϜ ʹΑΔฒྻ௨৴ w ݪଇతʹίωΫγϣϯ͸ຊ͚ͩுΔ w ϝοηʔδΛόΠφϦϑϨʔϜͰදݱ w ϔομΛಠࣗͷܗࣜͰѹॖ )1"$, w αʔό͔Βͷࣗൃతͳ௨৴ αʔόϓογϡ w ετϦʔϜͷ༏ઌ౓෇͚

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ετϦʔϜ w ͭͷίωΫγϣϯ͚ͩுΓɺͦͷ্ͰετϦʔϜΛ։͘ w )551௨৴͸ετϦʔϜ্ͰߦΘΕΔ w ετϦʔϜͷॲཧ͸ϒϩοΫ͠߹Θͳ͍ w ετϦʔϜʹ͸Ұҙͳ*%͕ৼΒΕΔ w ΫϥΠΞϯτ͔Β։͘৔߹ح਺ɺαʔό͔Β։͘৔߹ۮ਺Λ࢖༻ w 4USFBN*%͸؅ཧ༻ʹ࢖༻͞ΕΔ server client TCP HTTP/2 HTTP/20 HTTP/20

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όΠφϦϑϨʔϜ w ϝοηʔδΛόΠφϦͷʮϑϨʔϜʯͰදݱ w ϑϨʔϜʹ͸ϔομ͕෇༩͞ΕΔ w ϑϨʔϜ௕ɺλΠϓɺϑϥάɺετϦʔϜ*% w ϑϨʔϜͷϑΥʔϚοτ͸Լهͷ௨Γ

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ϑϨʔϜλΠϓ w ϑϨʔϜ͸༻్ʹԠͯ͡Լهͷ༷ʹ෼ྨ͞ΕΔ w %"5" ϘσΟΛදݱ w )&"%&34 ϔομΛදݱ w 13*03*5: ετϦʔϜͷ༏ઌ౓ઃఆ w 345@453&". ετϦʔϜΛҟৗऴྃ w 4&55*/(4 ίωΫγϣϯͷઃఆ w 164)@130.*4& αʔόϓογϡͷ௨஌ w 1*/( ίωΫγϣϯͷࢮ׆֬ೝ w (0"8": ίωΫγϣϯͷऴྃ௨஌ w 8*/%08@61%"5& ϑϩʔ੍ޚ w $0/5*/6"5*0/ )&"%&34ʹೲ·Βͳ͍෼ͷϔομͷૹ৴

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ϔομѹॖ w )1"$,ͱ͍͏ܗࣜͰѹॖ͞ΕΔ w IUUQUPPMTJFUGPSHIUNMESBGUJFUGIUUQCJTIFBEFS DPNQSFTTJPO w ѹॖํ๏ w ϔομͷ໊લ΍஋ΛϋϑϚϯූ߸Խ w Α͘࢖ΘΕΔϔομͷηοτΛJOEFYͰࢦఆ w ҎલૹͬͨϔομΛJOEFYͰࢦఆ

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)551࠷଎࣮૷ͷ ղઆ

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)551࠷଎࣮૷ͱ͸ w )551͸Yͱࠩ෼͕ଟ͍ w ਅ໘໨ʹ࣮૷͍ͯ͠Δͱ͕͔͔࣌ؒΔʜ w ࠷௿ݶϦΫΤετ͕ॲཧ͞ΕΔͱ͜Ζ·ͰΛ࣮૷͠Α͏ʂ w IUUQTHJUIVCDPNIUUQKQIUUQKQHJUIVCJPXJLJ)551 &$&'&"&' &"&# w ΫϥΠΞϯτ͔Β࣮૷ͨ͠ํָ͕ w ຊࢿྉ΋ΫϥΠΞϯτͷ࣮૷Λ૝ఆͯ͠࡞੒͍ͯ͠·͢

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࠷଎࣮૷Ͱ΍Δ΂͖ൣғ w όΠφϦϑϨʔϜॲཧ w ಛఆछྨͷϑϨʔϜ͚ͩ΍Γ·͢ w %"5" )&"%&34 4&55*/(4 (0"8": w ετϦʔϜ؅ཧ w αϘΓ·͢ɻTUSFBNJE͚ͩΛ࢖༻ w ঢ়ଶ΋؅ཧ͠ͳ͍ɻ͋ΔॱংͰϑϨʔϜ͕དྷΔ͜ͱΛ૝ఆɻ w ϔομѹॖ w αϘΓ·͢ɻFODPEF͚ͩ͸)1"$,ͷϑΥʔϚοτʹͳΔ΂͘߹Θͤ·͢ɻ

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࠷଎࣮૷ʹΑΔ ΫϥΠΞϯταʔόͷ΍ΓऔΓ server client 0.,$"& % 1.,Connec0on,Preface(24,octets,), 2.,,SETTINGS,frame, 3.,SETTINGS,frameACK 5.,HEADERS,frame ! 6.,HEADERS,frame,(#%) 7.,DATA,frame,(#%) 8.,GOAWAY,frame, 4.,ACK

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ϓϩτίϧ ωΰγΤʔγϣϯ w )551Λ࢖͏ࣄΛDMJFOUTFSWFSؒͰͲ͏ܾఆ͢Δ͔ʁ w ਅ໘໨ʹ΍Δ৔߹ w IUUQTͳΒ5-4/1/PS5-4"-1/ w IUUQͳΒ6QHSBEF "MU4WD w ࠷଎࣮૷Ͱ͸%JSFDU ωΰγΤʔγϣϯ͠ͳ͍ Ͱߦ͖·͢ w ૬ख͕)551͠Ό΂ΕΔ૝ఆͰ௨৴

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$POOFDUJPO1SFGBDF w )551ηογϣϯ։࢝࣌ʹΦΫςοτͷจࣈྻΛૹ৴ w 13*)551aSaOaSaO4.aSaOaSaOz w )551YͰ͸l13*ϝιου͕དྷͨzͱղऍ͞ΕΔ w )551͠Ό΂Εͳ͍αʔόʹૣظʹηογϣϯΛ੾ͬͯ໯͑Δ ! w ࢀߟIUUQTVNNFSXJOEKQEPDTESBGUJFUGIUUQCJTIUUQ TFDUJPO

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4&55*/(4GSBNF w ίωΫγϣϯશମʹؔΘΔઃఆΛ΍ΓऔΓ͢Δ w αʔόϓογϡڐՄɺಉ࣌ετϦʔϜͷ࠷େ਺ͳͲ w ϖΠϩʔυ͸ۭ ϑϨʔϜͷMFOHUI Ͱ΋Α͍ w ϖΠϩʔυͷϑΥʔϚοτ͸Լهͷ௨Γ ! w ࢀߟIUUQTVNNFSXJOEKQEPDTESBGUJFUGIUUQCJTIUUQTFDUJPO

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4&55*/(4GSBNF "$, w 4&55*/(4डऔଆ͸"$,Λฦ͢ඞཁ͕͋Δ w ϑϨʔϜϔομͷϑϥάͰYΛཱͯΔ w ϖΠϩʔυ͸ۭʹ͢Δ ! w ࢀߟIUUQTVNNFSXJOEKQEPDTESBGUJFUG IUUQCJTIUUQTFDUJPO

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)&"%&34 ϦΫΤετ w ϦΫΤετϔομΛૹ৴ w )FBEFS#MPDL'SBHNFOUҎ֎೚ҙ w )FBEFS#MPDL'SBHNFOU͸)1"$,ͷܗࣜʹΤϯίʔυ͢Δ ޙड़ ! w ࢀߟIUUQTVNNFSXJOEKQEPDTESBGUJFUGIUUQCJTIUUQTFDUJPO

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)1"$, w )551ͷϔομѹॖܗࣜ w IUUQUPPMTJFUGPSHIUNMESBGUJFUGIUUQCJTIFBEFS DPNQSFTTJPO w ࠷଎࣮૷Ͱ͸-JUFSBM)FBEFS'JFMEXJUIPVU*OEFYJOHΛ࢖༻ w ϋϑϚϯූ߸ԽɺΠϯσΫγϯάΛߦΘͳ͍ w ඞਢͷϔομ͕͋ΔͷͰͦΕ͸ؚ·ͤΔ͜ͱ w ϦΫΤετͰ͸NFUIPE TDIFNF BVUIPSJUZ QBUI w ϨεϙϯεͰ͸TUBUVT

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)1"$,ΤϯίʔυͷΠϝʔδ w ϑΥʔϚοτ͸ࠨԼͷਤͷ௨Γ w )͸ϋϑϚϯූ߸Խϑϥάɻʹ͓ͯ͘͠ w -FOHUIͷ ͸೚ҙ௕ɻࠓճ͸Ϗοτʹೲ·Δ૝ఆͰ࣮૷ɻ w ਅ໘໨ʹ࣮૷͢ΔͳΒ*OUFHFS3FQSFTFOUBUJPOΛࢀর w 4USJOHͷ෦෼͸"4$**ίʔυΛೖΕΔ w /BNF͕lNFUIPEzɺ7BMVF͕l(&5zͷ৔߹ɺӈͷΠϝʔδͷΑ͏ʹ͢Δ -JUFSBM)FBEFS'JFMEXJUIPVU*OEFYJOHϑΥʔϚοτ cccccc ccc clNFUIPEzc ccc cl(&5zc ΤϯίʔυޙͷΠϝʔδ 4USJOH෦෼͸࣮ࡍʹ͸จࣈྻ෼ͷPDUFUΛ࢖༻

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)&"%&34 Ϩεϙϯε w ϨεϙϯεϔομΛड৴ w ϖΠϩʔυ͸)1"$,ͷΤϯίʔυͱٯͷ࣮૷Λॻ͚͹0, w ͨͩ͠૬ख͕ϋϑϚϯූ߸ɺΠϯσΫγϯάͯ͘͠ΔՄೳੑ͋Γ w ࠷଎Ͱ͸࣮૷ΛαϘΓ·͠ΐ͏X w ϑϨʔϜͷ-FOHUI෼͚ͩόοϑΝΛಡΈඈ͹ͦ͏ɻɻɻ w ༨༟͕͋Ε͹࣮૷ͯ͠Έ͍ͯͩ͘͞

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%"5" Ϩεϙϯε w ϨεϙϯεϘσΟΛड৴ w ϖΠϩʔυ͸%BUB ͷ෦෼͚ͩΛ૝ఆ w όοϑΝΛͻͨ͢ΒಡΈग़͚ͩ͢Ͱ0, w ϨεϙϯεϘσΟ͕ςΩετͳΒɺͦͷ··ग़ྗͯ͠ΈΑ͏ʂ

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(0"8": w ηογϣϯऴྃΛ௨஌͢Δ w -BTU4USFBN*%ɺ&SSPS$PEF w "EEJUJJPOBM%FCVH%BUB͸ෆཁ ! w ࢀߟIUUQTVNNFSXJOEKQEPDTESBGUJFUGIUUQCJTIUUQ TFDUJPO

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͜͜·ͰͰ͖Ε͹࠷଎࣮૷ ׬ྃͰ͢ ͓ർΕ͞·Ͱͨ͠

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ಈ࡞֬ೝํ๏ w ΫϥΠΞϯτΛ࣮૷͢Δ৔߹ w 1VCMJD5FTU4FSWFSΛ࢖͏ w IUUQTOHIUUQPSH w OHIUUQEΛ࢖͏ %PDLFSJNBHF༻ҙ͠·ͨ͠ w ࠷଎࣮૷αʔόΛ࢖͏ w αʔόΛ࣮૷͢Δ৔߹ w OHIUUQ ΫϥΠΞϯτ࣮૷ Λ࢖͏ %PDLFSJNBHF༻ҙ͠·ͨ͠ w ࠷଎࣮૷ΫϥΠΞϯτΛ࢖͏

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OHIUUQ༻%PDLFSJNBHF w OHIUUQ࢖͑Δ%PDLFSJNBHF༻ҙ͠·ͨ͠ w ࢖༻ํ๏ w EPDLFSQVMMTZVDSFBNOHIUUQI w EPDLFSSVOJQUTZVDSFBN OHIUUQICJOCBTI w ίϯςφ಺ OHIUUQEWŠOPUMT

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࠷଎࣮૷ྫ w ࠷଎࣮૷ͯ͠Έ·ͨ͠ɻࢀߟʹ͍ͯͩ͘͠͞ɻ w IUUQTHJUIVCDPNTZVDSFBN .JOJNVN)551

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ࢀߟࢿྉ w IUUQESBGU೔ຊޠ༁ w IUUQTVNNFSXJOEKQEPDTESBGUJFUGIUUQCJTIUUQ w )1"$,ESBGU w IUUQUPPMTJFUGPSHIUNMESBGUJFUGIUUQCJTIFBEFS DPNQSFTTJPO w )551ϋοΧιϯୈҰճɺୈೋճͷࢿྉ w IUUQXXXTMJEFTIBSFOFU,BPSV.BFEBIUUQTJNQMF w IUUQXXXTMJEFTIBSFOFU:PTIJIJSP*XBOBHBIUUQ

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ൃల՝୊ w ࠷଎࣮૷͕ऴΘͬͨΒԼه΋௅ઓͯ͠ΈͯԼ͍͞ w )1"$,FODPEFSEFDPEFSϑϧ࣮૷ w ετϦʔϜͷঢ়ଶ؅ཧ w ଞλΠϓͷϑϨʔϜॲཧ࣮૷