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入門QUIC

teru0x1
June 12, 2020

 入門QUIC

teru0x1

June 12, 2020
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  1. ೖ໳26*$ খ໺ً໵

  2. index w26*$ͱ͸ w26*$ͷϞνϕʔγϣϯ  5$1ͷෆຬ఺  26*$ͷΰʔϧ  )P-ϒϩοΩϯάʹ͍ͭͯ w26*$ͷৄࡉ

    w26*$ͷ՝୊ͱ͜Ε͔Β 2
  3. index w26*$ͱ͸ w26*$ͷϞνϕʔγϣϯ  5$1ͷෆຬ఺  26*$ͷΰʔϧ  )P-ϒϩοΩϯάʹ͍ͭͯ w26*$ͷৄࡉ

    w26*$ͷ՝୊ͱ͜Ε͔Β 3
  4. QUICͱ͸ʢ1/2ʣ wτϥϯεϙʔτϓϩτίϧͷͭ  ʮ͍ͬ͘͘ʯ  ུޠͰ͸ͳ͍  6%1ͷ্Ͱಈ࡞  ίωΫγϣϯܕͷϓϩτίϧ

     5$1 5-4૬౰ͷػೳΛ࣋ͭ  ओʹ8FCͰར༻͞ΕΔ 4 ग़య<>
  5. QUICͱ͸ʢ2/2ʣ w੒Γཱͪͱݱঢ়  (PPHMF͕೥ʹൃද H26*$   ͦͷޙ*&5'8PSLJOHHSPVQ͕ൃ଍ɽඪ४Խ΁ʢJ26*$ʣ  H26*$͸$ISPNFͱ(PPHMFαʔόؒͷ൒෼Ҏ্ͷίωΫγϣϯͰ

    ར༻͞Ε͍ͯΔɽ  J26*$͸υϥϑτͷWFSTJPO͕ ࠷৽ w େ࿮͸ܾ·͍ͬͯͯɼࡉ͔ͳमਖ਼͕ଓ͍͍ͯΔ 5 ग़యɿ IUUQTUPPMTJFUGPSHIUNMESBGUJFUGRVJDUSBOTQPSU
  6. index w26*$ͱ͸ w26*$ͷϞνϕʔγϣϯ  5$1ͷෆຬ఺  26*$ͷΰʔϧ  )P-ϒϩοΩϯάʹ͍ͭͯ w26*$ͷৄࡉ

    w26*$ͷ՝୊ͱ͜Ε͔Β 6
  7. QUICͷϞνϕʔγϣϯ w8FCΞϓϦέʔγϣϯʹର͢Δཁٻͷଟ༷Խ  ஗Ԇཁٻ͕ݫ͍͠  ҉߸Խ wར༻Ͱ͖Δϓϩτίϧ  5$1 5-4

    w ෆຬ఺͕৭ʑ͋ͬͨʢޙड़ʣ 7 5$1 5-4ʹมΘΔ৽ͨͳϓϩτίϧΛ࡞Γɼ8FCͰ࢖͓͏ʂ
  8. TCPʹର͢Δෆຬ఺ʢ1/2ʣ wϓϩτίϧมߋʹ൐͏ࠔ೉  ϛυϧϘοΫεʹΑΔӨڹΛड͚Δ w ະରԠͷϑΝΠΞ΢Υʔϧʹःஅ͞ΕΔ͔΋ w /"5ʢ/FUXPSL"EESFTT5SBOTMBUJPOʣ΁ͷαϙʔτ͕ඞཁ͔΋ wߋ৽ʹ൐͏ࠔ೉ 

    5$1ͩͱΞοϓσʔτͷࡍɼ04Χʔωϧ͝ͱΞοϓσʔτ͢Δඞ ཁ͕͋Δ 8
  9. TCPʹର͢Δෆຬ఺ʢ2/2ʣ wϋϯυγΣΠΫʹ͔͔Δ஗Ԇ  5$1IBOETIBLF 355  5-4IBOETIBLF 355  w

    5-4ʹ͸355Έ͍ͨͳͷ͕͋Δ͚Ͳ  w)FBEPG-JOFϒϩοΩϯά  ͋Δύέοτ͕ԿΒ͔ͷཧ༝Ͱಧ͔ͳ͍ͱ͖ɼޙଓͷύέοτ͕ ଴ͨ͞ΕΔݱ৅  5$1Ͱ͸ύέοτϩε࣌ʹൃੜ͠ɼ௨৴඼࣭௿Լʹܨ͕Δ w zύέοτz͸ɼ5$1ηάϝϯτɼ)551ϝοηʔδͳͲ w ৄ͘͠͸ޙड़ 9 ग़య IUUQTIQCODPUSBOTQPSUMBZFSTFDVSJUZUMTUMTIBOETIBLF 'JHVSF
  10. QUICͷΰʔϧ wσϓϩΠ͕؆୯  ϛυϧϘοΫε͔Βड͚ΔӨڹΛ࠷খݶʹ͍ͨ͠ wߋ৽͕؆୯  04ΧʔωϧͷΞοϓσʔτແ͠ͰɼϓϩτίϧͷΞοϓσʔτΛ ߦ͍͍ͨ wϋϯυγΣΠΫͷ஗Ԇ͕খ͍͞ w)P-ϒϩοΩϯάͷӨڹΛड͚ͮΒ͍

    10
  11. ΰʔϧ1ɿσϓϩΠ͕؆୯ w6%1্Ͱಈ࡞ͤ͞Δ  ϢʔβʔۭؒͰಈ࡞͢Δʢ5$1 6%1͸ҰൠతʹΧʔωϧۭؒʣ  ϓϩτίϧͷΞοϓάϨʔυʹ൐͏04ͷΞοϓάϨʔυ͸ඞཁͳ ͍  ߴ଎ͳ։ൃαΠΫϧΛճ͢͜ͱ͕Մೳ

    wϔομͷେ෦෼Λ҉߸Խ͢Δ  ϑΝΠΞ΢Υʔϧ΍/"5ͳͲͷϛυϧϘοΫε͔Βड͚ΔӨڹΛ ࠷খԽ w ϛυϧϘοΫε͸26*$ύέοτͷେ෦෼ΛݟΔ͜ͱ͕Ͱ͖ͳ͍ w ϛυϧϘοΫε͕ରԠ͍ͯ͠ͳ͍͔Β26*$Λ࢖͑ͳ͍ɼΞοϓάϨʔυͰ͖ͳ͍ͱ͍͏ࣄଶΛ ๷͍Ͱ͍Δɽ 11
  12. ΰʔϧ2ɿϋϯυγΣΠΫͷ஗Ԇ͕খ͍͞ w355ͰϋϯυγΣΠΫ  5-4ͷϋϯυγΣΠΫʹ૬౰  ʢΫϥΠΞϯτʣαʔόূ໌ॻͷݕূ  ʢΫϥΠΞϯτɼαʔόʣ伴ަ׵ 12 ग़య

    IUUQTHJUIVCDPNqBOPZVLJIUUQOPUFCMPCNBTUFSIUUQ[email protected]QEG
  13. ΰʔϧ3ɿHoLϒϩοΩϯάͷӨڹΛड͚ͮΒ͍ wίωΫγϣϯதʹෳ਺ͷετϦʔϜΛੜ੒  ετϦʔϜ͕5$1ͷετϦʔϜʹ૬౰͢Δ  ֤ετϦʔϜ͸ಠཱ͍ͯ͠Δ  ͋ΔετϦʔϜதͷσʔλ͕ಧ͔ͳͯ͘΋ɼผͷετϦʔϜΛྲྀ ΕΔσʔλ͸ϒϩοΫ͞Εͳ͍ 13

    ΤϯυϙΠϯτ ΤϯυϙΠϯτ 26*$ετϦʔϜ 26*$ίωΫγϣϯ
  14. HoLϒϩοΩϯάͷྺ࢙ʢ1/8ʣ w)551  ϦΫΤετʹର͢ΔϨεϙϯε͕ฦͬͯ͜ͳ͍ͱɼ ࣍ͷϦΫΤετΛൃߦͰ͖ͳ͍  8FCϖʔδͷ֎෦ϦιʔεಡΈࠐΈ ʢJNH΍TDSJQUʣʹ͕͔͔࣌ؒΔ w ͜ΕΒͷϦιʔεશͯΛॱ൪ʹʢ௚ྻʹʣऔಘ͢Δ

    14
  15. HoLϒϩοΩϯάͷྺ࢙ʢ2/8ʣ w)551 1JQFMJOJOH  Ϩεϙϯε͕ฦΒͳ͍͏ͪʹ࣍ͷϦΫΤετΛൃߦͰ͖Δ֦ு  )551ͷ࢓্༷ɼϨεϙϯεॱং͸ಉظ͠ͳ͍ͱ͍͚ͳ͍ w /൪໨ͷϨεϙϯε͕ະ౸ୡͷ࣌ɼ/ʴ൪໨ͷϨεϙϯε͕ಧ͍͍ͯͯ΋ɼ্Ґ૚ʹ౉͞Εͣʹ଴ػ ʢ)551ʹ͓͚Δ)P-#ʣ

     1JQFMJOJOH͸ଟ͘ͷϒϥ΢βͰແޮʹ͞Εͯ͠·ͬͨ w ଟ͘ͷϓϩΩγ͕ରԠ͍ͯ͠ͳ͍ɼͳͲͷཧ༝ 15
  16. HoLϒϩοΩϯάͷྺ࢙ʢ4/8ʣ w)551 ෳ਺ίωΫγϣϯ  5$1ίωΫγϣϯΛෳ਺ுΔɼ೴ےͳ΍Γํ  ίωΫγϣϯ਺͚ͩฒྻʹऔಘͰ͖Δ w $ISPNFͰͭ΄ͲίωΫγϣϯΛுΔΒ͍͠ 

    ιέοτͷແବɼαʔό΁ͷෛՙ૿  ίωΫγϣϯ͝ͱʹ᫔᫓੍ޚ͞ΕΔͷͰɼίωΫγϣϯ͋ͨΓͷ ੑೳΛϑϧʹൃشͰ͖ͳ͍ w ͦΕͧΕͷίωΫγϣϯ͕ଳҬΛޓ͍ʹୣ͍߹͏ঢ়ଶ 16
  17. HoLϒϩοΩϯάͷྺ࢙ʢ5/8ʣ w)551  )551ϨΠϠΛଟॏԽ͢Δ͜ͱͰɼγϯάϧ5$1ίωΫγϣϯͰ͋Γͳ͕Β ϦΫΤετΛฒྻʹൃߦͰ͖Δ w ϖʔδಡΈࠐΈ࣌ؒͷ୹ॖʹ੒ޭʂ  ଟॏԽϦΫΤετɼϨεϙϯεͷ૊͝ͱʹҟͳΔ*%Λ෇༩ͯ͠ɼίωΫγϣϯதʹྲྀ͢ w

    )551͸ɼϦΫΤετ͝ͱʹ*%͕ͳ͔ͬͨ w ΫϥΠΞϯτ͕౤͛ͨϦΫΤετʹରԠ͢ΔϨεϙϯεΛࣝผ͢Δํ๏͸ͳ͔ͬͨ w ͦͷͨΊɼʮϨεϙϯε͸શͯ௚લʹൃߦͨ͠ϦΫΤετʹରԠ͢Δʯͱ͢Δ͔͠ͳ͍ 17 ग़య IUUQTEFWFMPQFSTHPPHMFDPNXFCGVOEBNFOUBMTQFSGPSNBODFIUUQ
  18. HoLϒϩοΩϯάͷྺ࢙ʢ6/8ʣ w)551  5$1ύέοτ͕ϩεͨ͠৔߹ɼ࠶ૹ଴͕ͪੜ͡Δ  ͜ͷ࣌ɼผͷ*%Λ࣋ͬͨ)551ϨεϙϯεʢΛӡͿ5$1ύέοτʣ ΋ϒϩοΫ͞ΕΔʢ5$1ͷ)P-#ʣ w γϯάϧίωΫγϣϯ͔ͩΒ w

    Ͱ΋ɼ͜ͷϨεϙϯε͸ϩεͨ͠Ϩεϙϯεͱ͸ؔ܎ͳ͍ 18 )551ʹΑΔ)P-# ग़యIUUQTEPDTHPPHMFDPNQSFTFOUBUJPOE-4/$$W#JKBCOO4#CX3MNH/IO1')#Z&99QULQSFTFOU TMJEFJEHBG[email protected]
  19. HoLϒϩοΩϯάͷྺ࢙ʢ7/8ʣ w26*$  τϥϯεϙʔτϨϕϧͰଟॏԽͷ࢓૊ΈΛಋೖ  ͋ΔετϦʔϜͰύέϩε͕ൃੜͯ͠΋ɼผͷετϦʔϜʹ͸Ө ڹ͠ͳ͍ w ύέϩε͕ൃੜͨ͠ετϦʔϜ͸ϒϩοΫ͕ى͜Δʢ)P-#͕ͳ͘ͳΔΘ͚Ͱ͸ͳ͍ʣ 19

    26*$ʹΑΔ)P-#ͷ཈੍ ग़యɿIUUQTEPDTHPPHMFDPNQSFTFOUBUJPOE -4/$$W#JKBCOO4#CX3MNH/IO1')#Z&99QULQSFTFOU TMJEFJEHBG[email protected]
  20. HoLϒϩοΩϯάͷྺ࢙ʢ8/8ʣ w)551  26*$ΛτϥϯεϙʔτϨΠϠʹར༻͢Δ)551  )551ͱಉ͘͡ɼϦΫΤετϨεϙϯεͷ૊ʹ*%ΛׂΓ౰ͯΔ ͕ɼͦΕʹ26*$Λར༻͢Δɽ  )551ͷܽ఺͕ղܾʂ 20

    26*$ʹΑΔ)P-#ͷ཈੍ ग़యɿIUUQTEPDTHPPHMFDPNQSFTFOUBUJPOE -4/$$W#JKBCOO4#CX3MNH/IO1')#Z&99QULQSFTFOU TMJEFJEHBG[email protected]
  21. ΰʔϧ3ɿHoLϒϩοΩϯάͷӨڹΛड͚ͮΒ͍ʢ࠶ܝʣ wίωΫγϣϯதʹෳ਺ͷετϦʔϜΛੜ੒  ετϦʔϜ͕5$1ͷετϦʔϜʹ૬౰͢Δ  ֤ετϦʔϜ͸ಠཱ͍ͯ͠Δ  ͋ΔετϦʔϜதͷσʔλ͕ಧ͔ͳͯ͘΋ɼผͷετϦʔϜΛྲྀ ΕΔσʔλ͸ϒϩοΫ͞Εͳ͍ 21

    ΤϯυϙΠϯτ ΤϯυϙΠϯτ 26*$ετϦʔϜ 26*$ίωΫγϣϯ
  22. QUICͷΰʔϧͱୡ੒ख๏·ͱΊ wσϓϩΠ͕؆୯  ϔομͷ҉߸ԽͰϛυϧϘοΫε͔ΒৄࡉΛӅṭ͢Δ wߋ৽͕؆୯  6%1ͷ্ʹϢʔβεϖʔεͰಈ࡞͢Δϓϩτίϧͱ࣮ͯ͠૷ wϋϯυγΣΠΫͷ஗Ԇ͕খ͍͞  5$1ͱ5-4Ͱผʑʹߦ͍ͬͯͨϋϯυγΣΠΫΛͭʹ·ͱΊͨ

    w)P-ϒϩοΩϯάͷӨڹΛड͚ͮΒ͍  ετϦʔϜʹΑΔଟॏԽ 22
  23. index w26*$ͱ͸ w26*$ͷϞνϕʔγϣϯ  5$1ͷෆຬ఺  26*$ͷΰʔϧ  )P-ϒϩοΩϯάʹ͍ͭͯ w26*$ͷৄࡉ

    w26*$ͷ՝୊ͱ͜Ε͔Β 23
  24. QUICͷ༻ޠ w26*$ίωΫγϣϯ  26*$Ͱ௨৴Λߦ͏ࡍɼ࠷ॳʹߏ੒͢ΔԾ૝తͳ௨৴࿏  *%ׂ͕Γ౰ͯΒΕɼϚΠάϨʔγϣϯ͕Մೳ w ճઢͷ੾Γସ͑΍/"5ϦόΠϯσΟϯά͕ىͬͯ͜΋ɼίωΫγϣϯΛ࡞Γ௚͢ඞཁ͕ͳ͍ w26*$ύέοτ 

    6%1ύέοτʹ֨ೲ͞ΕΔ w26*$ϑϨʔϜ  26*$ύέοτʹ֨ೲ͞ΕΔɼ26*$ͷ࠷খ୯Ґ  ໾ׂ͝ͱʹ໊લͱϑΥʔϚοτ͕ܾΊΒΕ͍ͯΔ w ΞϓϦέʔγϣϯ૚σʔλʢϖΠϩʔυʣૹ৴༻ͷϑϨʔϜˠ453&".ϑϨʔϜ w "$,Λ఻͑ΔͨΊͷϑϨʔϜˠ"$,ϑϨʔϜ w26*$ετϦʔϜ  26*$ίωΫγϣϯ্ʹଟॏԽ͞ΕΔɼԾ૝తͳ௨৴࿏ɼ  ࠶ૹ੍ޚɼϑϩʔ੍ޚͳͲ5$1ετϦʔϜͱࣅͨΑ͏ͳػೳΛ࣋ͭ  ϖΠϩʔυ͸ετϦʔϜΛྲྀΕΔ 24
  25. QUICύέοτ wछྨͷύέοτϔομ  ϩϯάϔομʔύέοτɿίωΫγϣϯཱ֬࣌ʹ࢖ΘΕΔ  γϣʔτϔομʔύέοτɿίωΫγϣϯཱ֬ޙʹ࢖ΘΕΔ 25 ग़యɿ IUUQTUPPMTJFUGPSHIUNMESBGUJFUGRVJDUSBOTQPSU

  26. QUICύέοτ wύέοτφϯόʔ  ૹ৴ύέοτ͝ͱʹՃࢉ͞ΕΔ஋  ύέϩεͷ൑அͳͲʹར༻͞ΕΔ w "$,͕ฦͬͯ͜ͳ͍ύέοτφϯόʔ͕ϩεͨ͠  ࠶ૹύέοτͰ͋ͬͯ΋Ճࢉ͞ΕΔ

    26
  27. QUIC͸ϩεݕग़͕ΑΓγϯϓϧʹ wύέοτ*%ͱϖΠϩʔυΦϑηοτͷ෼཭  26*$͸ϖΠϩʔυͷόΠτΦϑηοτΛύέϩε൑ఆʹ ར༻͠ͳ͍ w 5$1͸֬ೝԠ౴൪߸ʢϖΠϩʔυͷόΠτΦϑηοτʣΛར༻͍ͯͨ͠ w 5$1ΫϥΠΞϯτ͕ύέϩε൑ఆΛͯ͠࠶ૹͨ͠ޙɼ"$,͕ฦ͖ͬͯͨɼ͜ͷ"$,͸ɼͲͷૹ৴ύέοτʹର͢Δ"$,ͩΖ͏͔ʁ w

    ͜ͷ৔߹ɼ355Λਖ਼֬ʹਪଌͰ͖ͳ͘ͳΔ350 3FUSBOTNJTTJPO5JNFPVU ͷܾఆ͕ࠔ೉ʹ 27
  28. QUICϑϨʔϜ wશ෦Ͱछྨ  ϑϨʔϜ͝ͱʹಛఆͷ໾ׂ͕͋Δ w ϖΠϩʔυૹ৴༻ʢ453&".ϑϨʔϜʣ w γάφϧɼͦͷଞͷσʔλૹ৴༻ʢͦͷଞʣ  ಠࣗͷϑϨʔϜΛఆ֦ٛͯ͠ு͢Δ

    ͜ͱ΋Մೳ 28 ग़యɿ IUUQTUPPMTJFUGPSHIUNMESBGUJFUGRVJDUSBOTQPSU
  29. QUICͦͷଞͷػೳ wϑϩʔ੍ޚ  ௨৴૬खͷड৴΢Οϯυ΢͕ᷓΕͳ͍Α͏ʹྲྀྔΛ੍ޚ͢Δػೳ  ֤ετϦʔϜͱίωΫγϣϯͷ྆ํͷϨϕϧͰߦΘΕΔ w᫔᫓੍ޚ  ωοτϫʔΫͷ᫔᫓͕ى͜Βͳ͍Α͏ྲྀྔΛ੍ޚ͢Δػೳ 

    &$/&YQMJDJU$POHFTUJPO/PUJpDBUJPOʢ໌ࣔత᫔᫓௨஌ʣͷ αϙʔτ w ᫔᫓࣌ɼωοτϫʔΫϊʔυ͕*1ϔομʹରͯ͠ϑϥάΛཱͯɼϗετʹ᫔᫓Λ௨஌͢Δ 29
  30. Real World QUIC w26*$ͱݱ࣮ͷΠϯλʔωοτ  ೥$ISPNFʹ26*$αϙʔτ௥ՃʢσϑΥϧτͰ0''ʣ  ೥΄Ͳͷ$ISPNFϢʔβʹରͯ͠σϑΥϧτͰ༗ޮԽ  ೥΄΅શͯͷ$ISPNFϢʔβͱ"OESPJE:PV5VCFBQQͰ༗ޮԽ

    30
  31. Real World QUIC wݕࡧ଴ͪ࣌ؒʹର͢ΔධՁ  ݕࡧ༻ޠΛೖྗ͔ͯ͠Βɼશͯͷίϯςϯπ͕දࣔ͞ΕΔ·Ͱͷ࣌ؒ wͦͷଞͷධՁ  :PV5VCF w

    ϏσΦ࠶ੜ଴ͪ࣌ؒ ΄Ͳͷվળ  w ϑϦʔζ࣌ؒ ˋ΄Ͳͷվળ   355ʹର͢ΔධՁ w ৄ͘͠͸࿦จͰ 31
  32. index w26*$ͱ͸ w26*$ͷϞνϕʔγϣϯ  5$1ͷෆຬ఺  26*$ͷΰʔϧ  )P-ϒϩοΩϯάʹ͍ͭͯ w26*$ͷৄࡉ

    w26*$ͷ՝୊ͱ͜Ε͔Β 32
  33. QUICͷ՝୊ɼݒ೦఺ wߴ͍$16࢖༻཰  5$1 5-4ͷ໿ഒ w 26*$ͷεςʔτϚγϯ؅ཧɼϢʔβʔεϖʔε࣮૷ʹΑΔΦʔόʔϔουʢଟ਺ͷγεςϜίʔϧɼ/*$Φϑϩʔ υͷܽ೗ʣ w޿ଳҬɼ௿஗Ԇɼ௿ଛࣦ؀ڥͰͷੑೳྼԽ 

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  34. QUICͷ͜Ε͔Β wݱࡏ͸Wͷ࢓༷ݕ౼த  ඪ४Խ·Ͱͷ࣌ؒΛ୹ॖ͢ΔͨΊɼ8FC༻్ʹݶఆ͠ػೳ΋ߜͬ ͍ͯΔ wͦͷޙͷ֦ு  )551ετϦʔϜͷ༏ઌ౓੍ޚ  %/4PWFS26*$

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  35. ·ͱΊ w26*$ͷಛ௃͸ͭ  σϓϩΠ͕؆୯  ߋ৽͕؆୯  ϋϯυγΣΠΫͷ஗Ԇ͕খ͍͞  )P-ϒϩοΩϯάͷӨڹΛड͚ͮΒ͍

    w26*$͸ߴ஗Ԇɼߴଛࣦͷ؀ڥͰޮՌΛൃش͢Δ w26*$͸͍͍ͧ  5$1ʹ͋ͬͨ΋Ζ΋Ζͷ՝୊Λ͏·͘ղܾ͍ͯ͠Δͱ͜Ζ͕͋ͬ ͯ໘ന͍ 35
  36. ࢀߟจݙ  "EBN-BOHMFZ 5IFRVJDUSBOTQPSUQSPUPDPM%FTJHOBOE JOUFSOFUTDBMFEFQMPZNFOU*O1SPDFFEJOHTPGUIF $POGFSFODFPGUIF"$.4QFDJBM*OUFSFTU(SPVQPO%BUB $PNNVOJDBUJPO QBHFTr"$.  

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