たのしいSocketのしくみ / Socket Under a Microscope

TokyoWomen.rb #1 招待講演
https://tokyowomenrb.connpass.com/event/342573/

1. ͨͷ͍͠4PDLFUͷ͘͠Έ
   ԘҪඒ࡙
   
   !TIJPJNN
   
   !DPF@
   
   !DPF
   
   
   
   5PLZP8PNFOSC
   
   ট଴ߨԋ Socket Under a Microscope
3. QQ
   TFMG ɹ
   
   ԘҪඒ࡙
   ͓͍͠
   ɹ
   
   ஍Ҭ3VCZίϛϡχςΟ"TBLVTBSC
   ɹ
   
   3VCZίϛολʔ
   
   ɹ
   
   લ਎Πϕϯτ5PLZP(JSMTSC
   .FFUVQ
   WPM
   ʹొஃͯ͠·ͨ͠
   !TIJPJNN
   (JU)VC
   
   !DPF@
   FY5XJUUFS
   
   !DPF
   #MVFTLZ
   3BDLϛυϧ΢ΣΞೖ໳ͷͨΊͷ3BDLϛυϧ΢ΣΞ
   
   IUUQTTQFBLFSEFDLDPNDPF@SBDLNJEPSVVFBSVNFOGBMTFUBNFGBMTFSBDLNJEPSVVFB
4. 5PLZP8PNFOSC
   
   λΠϜςʔϒϧ IUUQTUPLZPXPNFOSCDPOOQBTTDPNFWFOU
5. 5PLZP8PNFOSC
   
   λΠϜςʔϒϧ ਪ͠ϝιουsource_locationͷ͘͠ΈΛ୳Δ - ͸͡ΊͯRubyͷίʔυΛಡΜͰΈͨ
   
   ਪ͠ϝιουTPVSDF@MPDBUJPOͷ͘͠ΈΛ୳Δ
   
   
   
   ͸͡Ίͯ3VCZͷίʔυΛಡΜͰΈͨ
   ͨͷ͍͠4PDLFUͷ͘͠Έ
   
   
   
   4PDLFUT
   6OEFS
   B
   .JDSPTDPQF
   
   3BJMT
   ͷίʔυͰֶͿ
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   ͱ
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   ͷ࢓૊Έ ͘͠Έ͕ؾʹͳΔਓʑ find_by_* method_missing nobu09 OPCV ͓͍͠ NBJNV IUUQTUPLZPXPNFOSCDPOOQBTTDPNFWFOU
6. 5PLZP8PNFOSC
   
   ςʔϚ ʮ3VCZ͓ͬͯ΋͠Ζ͍ʂʯ
   ͱ͍͏͜ͱͰɺࣗ෼ʹͱͬͯͷ
   ʮ3VCZ͓ͬͯ΋͠Ζ͍ʂʯͷ͏ͪͻͱͭʹ͍ͭͯ
   ͓࿩͍ͨ͠͠ͱࢥ͍·͢
7. 5PLZP8PNFOSC
   
   ςʔϚ ʮ3VCZ͓ͬͯ΋͠Ζ͍ʂʯ
   ͱ͍͏͜ͱͰɺࣗ෼ʹͱͬͯͷ
   ʮ3VCZ͓ͬͯ΋͠Ζ͍ʂʯͷ͏ͪͻͱͭʹ͍ͭͯ
   ͓࿩͍ͨ͠͠ͱࢥ͍·͢ ➡︎
   4PDLFU
8. ඵͰΘ͔Δ4PDLFU ྫ͑͹ʜ
   ΫϥΠΞϯτ͕αʔό΁ϦΫΤετΛૹΔ
   ➡︎
   αʔό͕ϦΫΤετΛड͚औΓ8FCΞϓϦέʔγϣϯΛ࣮ߦ
   ➡︎
   αʔό͕ͦͷ࣮ߦ݁ՌΛϨεϙϯεͱͯ͠ΫϥΠΞϯτʹૹΔ
   ϦΫΤετ
   
   Ϩεϙϯε
   8FCΞϓϦέʔγϣϯ ΫϥΠΞϯτϗετ αʔόϗετ
9. ඵͰΘ͔Δ4PDLFU ιέοτ
   ʜ
   ϗετʹͱͬͯͷ௨৴ͷग़ೖΓޱ
   
   Ϩεϙϯε
   ΫϥΠΞϯτϗετ αʔόϗετ ιέοτ ϗετ͸௨৴Λߦ͏ࡍʹιέοτΛ࡞੒͠ɺ͜ΕΛհͯ͠
   ωοτϫʔΫͷ޲͜͏ଆʹσʔλΛૹ৴ͨ͠Γ
   ωοτϫʔΫͷ޲͜͏ଆ͔ΒσʔλΛड৴ͨ͠Γ͢Δ
   ϦΫΤετ
   8FCΞϓϦέʔγϣϯ
10. ඵͰΘ͔Δ4PDLFU ιέοτ
    ʜ
    ϗετʹͱͬͯͷ௨৴ͷग़ೖΓޱ
    
    ϦΫΤετ
    
    Ϩεϙϯε
    ιέοτ 8FCΞϓϦέʔγϣϯ ΫϥΠΞϯτϗετ αʔόϗετ ιέοτ"1*
    ʜ
    ιέοτΛૢ࡞͢ΔͨΊͷ"1*
    
    
    
    
    
    
    
    
    TPDLFUϥΠϒϥϦ
    ʜ
    3VCZ͔Βιέοτ"1*Λѻ͏ͨΊͷϥΠϒϥϦ
11. 3VCZͷTPDLFUϥΠϒϥϦΛ࢖͏ͱɺ
    ؆୯ʹΫϥΠΞϯτɾαʔόϓϩάϥϜ Λͭ͘Δ͜ͱ͕Ͱ͖·͢
12. αʔόϓϩάϥϜ αʔό
13. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    4PDLFUUDQ@TFSWFS@MPPQϝιου
    
    TPDLFUϥΠϒϥϦΛSFRVJSF
    
14. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    ࣗ਎ͷϗετ໊
    MPDBMIPTU
    
    αʔόࣗ਎ͷϙʔτ൪߸
    
    
15. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    αʔόͱͯ͠ߦ͏ॲཧ
    
16. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    4PDLFUΦϒδΣΫτ
    
    4PDLFUΦϒδΣΫτ
    
    
    
    
    ιέοτΛ3VCZͷΦϒδΣΫτͰϥοϓ͠ɺ
    
    
    ɹ
    3VCZ͔Βѻ͑ΔΑ͏ʹͨ͠΋ͷ
17. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    4PDLFUΦϒδΣΫτ
    
    ͜͜ͰϒϩοΫม਺ʹ౉ͬͯ͘Δͷ͸ɺ
    
    
    ϦΫΤετΛૹ৴ͨ͠ΫϥΠΞϯτͱ
    
    
    ઀ଓࡁΈͷঢ়ଶͷ4PDLFUΦϒδΣΫτ
18. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    4PDLFUΦϒδΣΫτΛಡΈࠐΈ
    
    
    
    ΫϥΠΞϯτ͔ΒͷϦΫΤετϝοηʔδΛऔಘ
    
    ϦΫΤετΛૹ৴ͨ͠ΫϥΠΞϯτͱ
    
    
    ઀ଓࡁΈͷঢ়ଶͷ4PDLFUΦϒδΣΫτ
    
19. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    4PDLFUΦϒδΣΫτʹॻ͖ࠐΈ
    
    
    
    ΫϥΠΞϯτ΁ϨεϙϯεΛૹ৴
    ͜͜Ͱ͸ϦΫΤετϝοηʔδΛ
    
    ͓͏Ήฦ͠ʹΫϥΠΞϯτʹૹ৴͍ͯ͠Δ
    ϦΫΤετΛૹ৴ͨ͠ΫϥΠΞϯτͱ
    
    
    ઀ଓࡁΈͷঢ়ଶͷ4PDLFUΦϒδΣΫτ
    
20. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    Ұ௨ΓΫϥΠΞϯτʹର͢Δૢ࡞͕ऴΘͬͨΒ
    
    
    ઀ଓࡁΈ4PDLFUΦϒδΣΫτͷೖग़ྗΛΫϩʔζ
    
    ϦΫΤετΛૹ৴ͨ͠ΫϥΠΞϯτͱ
    
    
    ઀ଓࡁΈͷঢ়ଶͷ4PDLFUΦϒδΣΫτ
    
21. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    ϦΫΤετΛड͚ͯϨεϙϯεΛฦ͢ɺͱ͍͏Ұ࿈ͷྲྀΕΛϧʔϓ
    
22. αʔόϓϩάϥϜ require "socket" Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end αʔό
    
    ΫϥΠΞϯτ͔ΒϦΫΤετΛड৴͠ɺ
    
    
    ͦΕΛͦͷ··ΫϥΠΞϯτʹϨεϙϯεͱͯ͠
    
    
    
    
    ૹ৴͢Δ؆୯ͳ5$1ΤίʔαʔόϓϩάϥϜ a
    ׬੒
    
23. ΫϥΠΞϯτϓϩάϥϜ ΫϥΠΞϯτ
24. ΫϥΠΞϯτϓϩάϥϜ require "socket" Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end ΫϥΠΞϯτ
    TPDLFUϥΠϒϥϦΛSFRVJSF
    
    4PDLFUUDQϝιου
    
25. ΫϥΠΞϯτϓϩάϥϜ require "socket" Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end ΫϥΠΞϯτ
    Ѽઌϗετ໊
    MPDBMIPTU
    
    Ѽઌϙʔτ൪߸
    
    
26. ΫϥΠΞϯτϓϩάϥϜ require "socket" Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end ΫϥΠΞϯτ
    ΫϥΠΞϯτͱͯ͠ߦ͏ॲཧ
    
27. ΫϥΠΞϯτϓϩάϥϜ require "socket" Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end ΫϥΠΞϯτ
    Ѽઌͷαʔόͱ઀ଓࡁΈͷঢ়ଶͷ
    
    
    4PDLFUΦϒδΣΫτ
    
28. ΫϥΠΞϯτϓϩάϥϜ require "socket" Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end ΫϥΠΞϯτ
    4PDLFUΦϒδΣΫτʹॻ͖ࠐΈ
    
    
    
    αʔό΁ϦΫΤετϝοηʔδΛૹ৴
    
    Ѽઌͷαʔόͱ઀ଓࡁΈͷঢ়ଶͷ
    
    
    4PDLFUΦϒδΣΫτ
    
29. ΫϥΠΞϯτϓϩάϥϜ require "socket" Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end ΫϥΠΞϯτ
    4PDLFUΦϒδΣΫτΛಡΈࠐΈ
    
    
    
    αʔό͔ΒϨεϙϯεϝοηʔδΛऔಘ
    
    ϨεϙϯεϝοηʔδΛඪ४ग़ྗ
    Ѽઌͷαʔόͱ઀ଓࡁΈͷঢ়ଶͷ
    
    
    4PDLFUΦϒδΣΫτ
    
30. ΫϥΠΞϯτϓϩάϥϜ require "socket" Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end ΫϥΠΞϯτ
    ॲཧ͕ऴΘΔͱ4PDLFUΦϒδΣΫτ͸ࣗಈతʹΫϩʔζ
    
    Ѽઌͷαʔόͱ઀ଓࡁΈͷঢ়ଶͷ
    
    
    4PDLFUΦϒδΣΫτ
    
31. ΫϥΠΞϯτϓϩάϥϜ require "socket" Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end ΫϥΠΞϯτ
    
    αʔόʹϦΫΤετ )J Λૹ৴͠ɺ
    
    
    αʔό͔Βड৴ͨ͠ϨεϙϯεΛͦͷ··ग़ྗ͢Δ
    
    
    ؆୯ͳ5$1ΫϥΠΞϯτϓϩάϥϜ a
    ׬੒
    
32. σϞ
33. 4PDLFUUDQ@TFSWFS@MPPQ
    
    4PDLFUUDQ
    ͷߏ଄ Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end αʔό ΫϥΠΞϯτ
    ΫϥΠΞϯτͱͷ઀ଓޙʹߦ͏࢓ࣄ
    
    αʔόͱͷ઀ଓޙʹߦ͏࢓ࣄ
    αʔόʵΫϥΠΞϯτؒͷ઀ଓཱ͕֬ͨ͠ޙʹߦ͏ॲཧΛ
    ֤ϝιουͷϒϩοΫ಺ʹهड़͍ͯ͠Δ
34. Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end αʔό ΫϥΠΞϯτ ωοτϫʔΫΛհ͓ͯ͠ޓ͍ʹ઀ଓཱ͕֬͢Δ·Ͱͷॲཧ͸
    ͦΕͧΕͷϝιουࣗ਎͕ߦͳ͍ͬͯΔ 4PDLFUUDQ@TFSWFS@MPPQ
    
    4PDLFUUDQ
    ͷߏ଄
    ΫϥΠΞϯτͱͷ઀ଓ
    
    αʔόͱͷ઀ଓ
    
35. Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end αʔό ΫϥΠΞϯτ ͦͷཪଆͰ3VCZ͸ͲͷΑ͏ʹιέοτΛѻ͍ɺ઀ଓ͍ͯ͠Δ 4PDLFUUDQ@TFSWFS@MPPQ
    
    4PDLFUUDQ
    ͷߏ଄
    Ͳ͏΍ͬͯΫϥΠΞϯτͱ઀ଓ͍ͯ͠Δ
    
    Ͳ͏΍ͬͯαʔόͱ઀ଓ͍ͯ͠Δ
    
36. ɾ3VCZ
    .3*
    
    ɹIUUQTHJUIVCDPNSVCZSVCZUSFFSVCZ@@
    ɾಈ࡞؀ڥ͸NBD04Λ૝ఆ ͨͷ͍͠4PDLFUͷ͘͠Έ
    Socket Under a Microscope
37. 4PDLFUUDQ
    ΫϥΠΞϯτ
    ฤ Socket.tcp("localhost", 4567) do |sock| sock.write "Hi" message = sock.read puts message end
38. 4PDLFUUDQ class Socket # ... def self.tcp(host, port, ... fast_fallback: tcp_fast_fallback, &) # ... end # ... end
    
    4PDLFUUDQ͸4PDLFUΫϥεʹ
    
    
    Ϋϥεϝιουͱ࣮ͯ͠૷͞Ε͍ͯΔ FYUTPDLFUMJCTPDLFUSC
39. 4PDLFUUDQ class Socket # ... def self.tcp(host, port, ... fast_fallback: tcp_fast_fallback, &) sock = if fast_fallback && !(host && ip_address?(host)) tcp_with_fast_fallback(host, port, ...) else tcp_without_fast_fallback(host, port, ...) end # ... end # ... end FYUTPDLFUMJCTPDLFUSC
40. 4PDLFUUDQ class Socket # ... def self.tcp(host, port, ... fast_fallback: tcp_fast_fallback, &) sock = if fast_fallback && !(host && ip_address?(host)) tcp_with_fast_fallback(host, port, ...) else tcp_without_fast_fallback(host, port, ...) end # ... end # ... end FYUTPDLFUMJCTPDLFUSC
    ಛఆͷ৚݅Ͱ෼ذ
    
    ίʔυϦʔσΟϯάͷ༰қ͔͞Βɺ
    

    ࠓճ͸ͪ͜ΒΛಡΈ·͢
    
41. 4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL def self.tcp_without_fast_fallback(host, port, ...) # ... Addrinfo.foreach(host, port, nil, :STREAM, ...) {|ai| # ... begin sock = ai.connect(...) rescue SystemCallError last_error = $! next end ret = sock break } # ... end FYUTPDLFUMJCTPDLFUSC
42. 4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL def self.tcp_without_fast_fallback(host, port, ...) # ... Addrinfo.foreach(host, port, nil, :STREAM, ...) {|ai| # ... begin sock = ai.connect(...) rescue SystemCallError last_error = $! next end ret = sock break } # ... end FYUTPDLFUMJCTPDLFUSC
    "EESJOGPGPSFBDI
    
43. "EESJOGPGPSFBDI FYUTPDLFUMJCTPDLFUSC class Addrinfo # ... def self.foreach(nodename, service, ..., &block) Addrinfo.getaddrinfo(nodename, service, ...).each(&block) end # ... end
44. class Addrinfo # ... def self.foreach(nodename, service, ..., &block) Addrinfo.getaddrinfo(nodename, service, ...).each(&block) end # ... end "EESJOGPGPSFBDI
    "EESJOGPHFUBEESJOGP
    FYUTPDLFUMJCTPDLFUSC
45. "EESJOGPHFUBEESJOGP "EESJOGPHFUBEESJOGP͸
    ౉͞Εͨϗετ໊ͱϙʔτ൪߸Λ*1ΞυϨεʹղܾ͠ɺ
    ͦͷ݁ՌҰཡΛ"EESJOGPΦϒδΣΫτͷ഑ྻͰฦ͢ϝιου
    (ྫ) Addrinfo.getaddrinfo("localhost", 4567, nil, :STREAM) => [#<Addrinfo: 127.0.0.1 TCP (localhost)>, #<Addrinfo: ::1 TCP (localhost)>] ϗετ͕*1W*1W྆ํʹରԠ͍ͯ͠Δ৔߹ɺฦΓ஋ʹ͸
    
    ͦͷ྆ํͷΞυϨεΛද͢"EESJOGPΦϒδΣΫτؚ͕·ΕΔ
    ϗετ໊
    
    ϙʔτ൪߸
    
    ໊લղܾͷώϯτ
    
    ղܾͰ͖ͨ*1ΞυϨεҰཡ
    
46. "EESJOGPΦϒδΣΫτ "EESJOGPΦϒδΣΫτ
    
    *1ΞυϨε৘ใΛද͢ΦϒδΣΫτ
    (ྫ) addrinfo # => #<Addrinfo: 127.0.0.1 TCP (localhost)> addrinfo.ip_address # => "127.0.0.1" addrinfo.ipv4? # => true addrinfo.pfamily # => addrinfo.socktype # => "EESJOGPΦϒδΣΫτʹΞΫηε͢Δ͜ͱͰ
    ΞυϨεʹؔ͢Δ৘ใΛऔಘͨ͠Γૢ࡞͢Δ͜ͱ͕Ͱ͖Δ ΞυϨεϑΝϛϦ (IPv6 / IPv4) Λද͢਺஋ ௨৴ͷछྨ (ετϦʔϜ / σʔλάϥϜ) Λද͢਺஋
47. class Addrinfo # ... def self.foreach(nodename, service, ..., &block) Addrinfo.getaddrinfo(nodename, service, ...).each(&block) end # ... end "EESJOGPGPSFBDI
    
    ྫɿ*1Wͱ*1W྆ํʹରԠ͍ͯ͠ΔϗετͰ
    
    
    ɹɹϗετ໊ͱͯ͠MPDBMIPTUΛ౉ͨ͠৔߹
    
    
    "EESJOGPHFUBEESJOGP͸ϗετ໊Λ໊લղܾ͠ɺ
    
    
    *1WΞυϨεͱ*1WΞυϨεΛͦΕͧΕද͢
    
    
    "EESJOGPΦϒδΣΫτΛཁૉʹ࣋ͭ഑ྻΛฦ͢ => [#<Addrinfo: 127.0.0.1 TCP (localhost)>, #<Addrinfo: ::1 TCP (localhost)>] "localhost" FYUTPDLFUMJCTPDLFUSC
48. class Addrinfo # ... def self.foreach(nodename, service, ..., &block) Addrinfo.getaddrinfo(nodename, service, ...).each(&block) end # ... end "EESJOGPGPSFBDI
    
    "EESJOGPGPSFBDI͸͜ͷ഑ྻʹରͯ͠FBDIΛݺͼग़͠ɺ
    
    
    ֤"EESJOGPΦϒδΣΫτ͝ͱʹϒϩοΫΛ࣮ߦ͢Δ
    "EESJOGPΦϒδΣΫτͷ഑ྻʹର͢Δ
    "SSBZFBDI
    FYUTPDLFUMJCTPDLFUSC
49. 
    
    
    
    
    
    
    
    
    4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL def self.tcp_without_fast_fallback(host, port, ...) # ... Addrinfo.foreach(host, port, nil, :STREAM, ...) {|ai| # ... begin sock = ai.connect(...) rescue SystemCallError last_error = $! next end ret = sock break } # ... end
    
    ϒϩοΫม਺ʹ౉͞ΕΔ"EESJOGPΦϒδΣΫτΛ༻͍ͯ
    
    
    ϒϩοΫ಺ͷॲཧΛ࣮ߦ͢Δ
    "EESJOGPΦϒδΣΫτ
    FYUTPDLFUMJCTPDLFUSC ࠶ͼ
    "EESJOGPGPSFBDI͕࣮ߦ͢ΔϒϩοΫ
    
50. 4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL def self.tcp_without_fast_fallback(host, port, ...) # ... Addrinfo.foreach(host, port, nil, :STREAM, ...) {|ai| # ... begin sock = ai.connect(...) rescue SystemCallError last_error = $! next end ret = sock break } # ... end FYUTPDLFUMJCTPDLFUSC
    "EESJOGPDPOOFDU
    
51. "EESJOGPDPOOFDU class Addrinfo # ... def connect(...) connect_internal(nil, ...) end # ... end FYUTPDLFUMJCTPDLFUSC
52. "EESJOGPDPOOFDU class Addrinfo # ... def connect(...) connect_internal(nil, ...) end # ... end
    "EESJOGPDPOOFDU@JOUFUOBM
    FYUTPDLFUMJCTPDLFUSC
53. "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end FYUTPDLFUMJCTPDLFUSC
54. "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end FYUTPDLFUMJCTPDLFUSC
    4PDLFUOFX
    
55. "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end FYUTPDLFUMJCTPDLFUSC
    4PDLFUOFX
    
    ϗετ಺෦Ͱ৽͍͠ιέοτΛ࡞੒͠ɺ
    ɹͦΕΛ4PDLFUΦϒδΣΫτͱͯ͠
    ɹѻ͑ΔΑ͏ʹͯ͠ฦ͢
56. "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end FYUTPDLFUMJCTPDLFUSC
    4PDLFUOFX
    ➡︎
    ͦͷ࣮ଶ͸$ݴޠͰ࣮૷ 3VCZͷ͞ΒͳΔ಺ଆΛ
    ͷ͍͍͖ͧͯ·͠ΐ͏ 
    ϗετ಺෦Ͱ৽͍͠ιέοτΛ࡞੒͠ɺ
    ɹͦΕΛ4PDLFUΦϒδΣΫτͱͯ͠
    ɹѻ͑ΔΑ͏ʹͯ͠ฦ͢
57. 4PDLFUJOJUJBMJ[F void Init_socket(void) { // ... rb_cSocket = rb_define_class("Socket", rb_cBasicSocket); // ... rb_define_method(rb_cSocket, "initialize", sock_initialize, -1); // ... } FYUTPDLFUTPDLFUD
58. 4PDLFUJOJUJBMJ[F void Init_socket(void) { // ... rb_cSocket = rb_define_class("Socket", rb_cBasicSocket); // ... rb_define_method(rb_cSocket, "initialize", sock_initialize, -1); // ... }
    
    3VCZͷ$
    "1*Λ࢖ͬͯ
    
    
    4PDLFUΫϥεͱ4PDLFUJOJUJBMJ[F͕ఆٛ͞Ε͍ͯΔ FYUTPDLFUTPDLFUD
    4PDLFUΫϥεΛఆٛ
    
    4PDLFUJOJUJBMJ[FΛఆٛ
    
59. 4PDLFUJOJUJBMJ[F void Init_socket(void) { // ... rb_cSocket = rb_define_class("Socket", rb_cBasicSocket); // ... rb_define_method(rb_cSocket, "initialize", sock_initialize, -1); // ... } FYUTPDLFUTPDLFUD
    4PDLFUJOJUJBMJ[Fͷ಺෦࣮૷
    
    
    4PDLFUJOJUJBMJ[F͸
    
    
    ࣮ମͱͯ͠͸TPDL@JOJUJBMJ[Fؔ਺ʹ࣮૷͞Ε͍ͯΔ
60. TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); } FYUTPDLFUTPDLFUD
61. TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); }
    ϝιουͷҾ਺ͷॲཧ
    FYUTPDLFUTPDLFUD
62. TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); }
    STPDL@TPDLFUؔ਺
    FYUTPDLFUTPDLFUD
63. TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); }
    
    STPDL@TPDLFUؔ਺͸಺෦Ͱ
    
    
    STPDL@TPDLFUؔ਺ΛݺΜͰ͍Δ FYUTPDLFUTPDLFUD
64. STPDL@TPDLFU static int rsock_socket0(int domain, int type, int proto) { // ... int result = socket(domain, type, proto); if (result == -1) return -1; rb_fd_fix_cloexec(result); #ifndef SOCK_NONBLOCK rsock_make_fd_nonblock(result); #endif return result; } FYUTPDLFUJOJUD
65. STPDL@TPDLFU static int rsock_socket0(int domain, int type, int proto) { // ... int result = socket(domain, type, proto); if (result == -1) return -1; rb_fd_fix_cloexec(result); #ifndef SOCK_NONBLOCK rsock_make_fd_nonblock(result); #endif return result; }
    TPDLFU
    γεςϜίʔϧ
    
    
    STPDL@TPDLFUؔ਺಺Ͱ
    
    
    TPDLFUͱ͍͏γεςϜίʔϧΛݺΜͰ͍Δ
    a
    ॏཁ
     FYUTPDLFUJOJUD
66. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    Χʔωϧͱ͸ 6OJYܥ04ʹ͓͍ͯ04ͷத֩ͱͳΔιϑτ΢ΣΞ
    ϋʔυ΢ΣΞࢿݯΛ؅ཧ͠ɺϓϩάϥϜͷಈ࡞؀ڥΛఏڙ͢Δ γεςϜίʔϧͱ͸ ͷલʹ ୅දతͳ6OJYܥ04
    NBD04ɺ'SFF#4%ɺ0QFO#4%ɺ-JOVYͳͲͳͲʜ Χʔωϧ
    04ͷத֩෦෼
67. γεςϜίʔϧͱ͸ Χʔωϧ͕ఏڙ͢ΔػೳΛ
    ϓϩάϥϜ͔Βར༻͢ΔͨΊͷ࠷΋جຊతͳ"1* γεςϜίʔϧ
    
    ྫ
    
    
    ϑΝΠϧΛ։͘ɺಡΈॻ͖͢Δ
    
    
    ϓϩηεΛੜ੒͢Δ
    
    
    ωοτϫʔΫ௨৴Λߦ͏ Χʔωϧ
    04ͷத֩෦෼ ϓϩάϥϜ
68. STPDL@TPDLFU static int rsock_socket0(int domain, int type, int proto) { // ... int result = socket(domain, type, proto); if (result == -1) return -1; rb_fd_fix_cloexec(result); #ifndef SOCK_NONBLOCK rsock_make_fd_nonblock(result); #endif return result; }
    ͜ͷϗετ಺ʹιέοτΛ࡞੒͢ΔΑ͏
    
    
    Χʔωϧʹର໋ͯ͠ྩ͢Δ
    
    
    STPDL@TPDLFUؔ਺͸಺෦తʹTPDLFUΛݺͼग़͢͜ͱͰ
    
    
    ࣮ࡍʹϗετ಺ʹιέοτΛ࡞੒͍ͯ͠Δ FYUTPDLFUJOJUD
    TPDLFU
    γεςϜίʔϧ
    ϗετ ιέοτ
69. STPDL@TPDLFU static int rsock_socket0(int domain, int type, int proto) { // ... int result = socket(domain, type, proto); if (result == -1) return -1; rb_fd_fix_cloexec(result); #ifndef SOCK_NONBLOCK rsock_make_fd_nonblock(result); #endif return result; }
    
    TPDLFUγεςϜίʔϧ͸ɺ৽͘͠࡞੒ͨ͠ιέοτΛ
    
    
    ಛఆ͢ΔͨΊͷ൪߸
    
    ιέοτσΟεΫϦϓλ
    Λฦ͢
    ιέοτσΟεΫϦϓλΛऔಘ
    FYUTPDLFUJOJUD
    TPDLFU
    γεςϜίʔϧ
    
70. STPDL@TPDLFU static int rsock_socket0(int domain, int type, int proto) { // ... int result = socket(domain, type, proto); if (result == -1) return -1; rb_fd_fix_cloexec(result); #ifndef SOCK_NONBLOCK rsock_make_fd_nonblock(result); #endif return result; }
    औಘͨ͠ιέοτσΟεΫϦϓλΛฦͯ͠ऴྃ
    FYUTPDLFUJOJUD
    
    STPDL@TPDLFU͸৽͘͠࡞੒ͨ͠ιέοτͷ
    
    
    ιέοτσΟεΫϦϓλΛฦͯ͠ऴྃ͢Δ
    ιέοτσΟεΫϦϓλΛऔಘ
    
    TPDLFU
    γεςϜίʔϧ
    
71. 
    
    
    
    
    
    
    
    
    
    TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); } FYUTPDLFUTPDLFUD ࠶ͼ
    STPDL@TPDLFUؔ਺
    
    ৽͍͠ιέοτΛ࡞੒ͯ͠
    
    ιέοτσΟεΫϦϓλΛฦ͢
    ಺෦ͰSTPDL@TPDLFUؔ਺ΛݺͿ
    
72. 
    
    
    
    
    
    
    
    
    
    TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); }
    STPDL@TPDLFUؔ਺
    FYUTPDLFUTPDLFUD
    
    STPDL@TPDLFUؔ਺ͷฦΓ஋
    ৽͘͠࡞੒ͨ͠ιέοτͷ
    
    
    ιέοτσΟεΫϦϓλ
    Λม਺GEʹ֨ೲ
    ࠶ͼ 
    ৽͍͠ιέοτΛ࡞੒ͯ͠
    
    ιέοτσΟεΫϦϓλΛฦ͢
    ಺෦ͰSTPDL@TPDLFUؔ਺ΛݺͿ
    
73. TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); }
    STPDL@JOJU@TPDLؔ਺
    FYUTPDLFUTPDLFUD
    
    STPDL@JOJU@TPDLؔ਺͸ม਺GEͷιέοτσΟεΫϦϓλΛ
    
    
    σʔλͱͯ͠อ࣋͢Δ4PDLFUΦϒδΣΫτΛ৽ͨʹ࡞੒͢Δ
    
74. TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); }
    ฦΓ஋ΛSFUVSO
    
    
    ࠷ޙʹɺTPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[F
    ͸
    
    
    ࡞੒ͨ͠4PDLFUΦϒδΣΫτΛฦͯ͠ऴྃ FYUTPDLFUTPDLFUD
75. TPDL@JOJUJBMJ[F
    4PDLFUJOJUJBMJ[Fͷ࣮ମ static VALUE sock_initialize(int argc, VALUE *argv, VALUE sock) { VALUE domain, type, protocol; int fd; int d, t; rb_scan_args(argc, argv, "21", &domain, &type, &protocol); // ... fd = rsock_socket(d, t, NUM2INT(protocol)); if (fd < 0) rb_sys_fail("socket(2)"); return rsock_init_sock(sock, fd); }
    
    4PDLFUOFXͷ಺෦࣮૷͸͜͜·Ͱ FYUTPDLFUTPDLFUD
76. 
    
    
    
    
    
    
    
    "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end FYUTPDLFUMJCTPDLFUSC
    4PDLFUOFX
    ࠶ͼ
    
    ϗετ಺෦Ͱ৽͍͠ιέοτΛ࡞੒͠ɺ
    
    ɹ͜ΕΛϥοϓ͢Δ4PDLFUΦϒδΣΫτΛฦ͢
77. "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end FYUTPDLFUMJCTPDLFUSC
    ࡞੒ͨ͠4PDLFUΦϒδΣΫτΛม਺TPDLʹ֨ೲ
    
    ม਺TPDLʹରͯ͠4PDLFUDPOOFDU
    
    TFMG
    
    ѼઌͷΞυϨε৘ใ
    "EESJOGPΦϒδΣΫτ
    
78. "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end FYUTPDLFUMJCTPDLFUSC
    
    4PDLFUDPOOFDU΋$Ͱ࣮૷͞Ε͍ͯΔ
    ࡞੒ͨ͠4PDLFUΦϒδΣΫτΛม਺TPDLʹอଘ
    
    TFMG
    
    ѼઌͷΞυϨε৘ใ
    "EESJOGPΦϒδΣΫτ
    
    ม਺TPDLʹରͯ͠4PDLFUDPOOFDU
    
79. 4PDLFUDPOOFDU void Init_socket(void) { // ... rb_cSocket = rb_define_class("Socket", rb_cBasicSocket); // ... rb_define_method(rb_cSocket, "initialize", sock_initialize, -1); rb_define_method(rb_cSocket, "connect", sock_connect, 1); // ... } FYUTPDLFUTPDLFUD
    4PDLFUDPOOFDUΛఆٛ
    
    4PDLFUΫϥεΛఆٛ
    
    4PDLFUDPOOFDUͷ಺෦࣮૷
    
    
    4PDLFUDPOOFDU͸
    
    
    ࣮ମͱͯ͠͸TPDL@DPOOFDUؔ਺ʹ࣮૷͞Ε͍ͯΔ
80. static VALUE sock_connect(VALUE self, VALUE addr) { // ... int result = rsock_connect( self, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr), 0, RUBY_IO_TIMEOUT_DEFAULT ); // ... return INT2FIX(result); } TPDL@DPOOFDU
    4PDLFUDPOOFDUͷ࣮ମ FYUTPDLFUTPDLFUD
81. static VALUE sock_connect(VALUE self, VALUE addr) { // ... int result = rsock_connect( self, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr), 0, RUBY_IO_TIMEOUT_DEFAULT ); // ... return INT2FIX(result); } TPDL@DPOOFDU
    4PDLFUDPOOFDUͷ࣮ମ sock.connect(self)
    4PDLFUDPOOFDUͷϨγʔό
    4PDLFUΦϒδΣΫτ
    FYUTPDLFUTPDLFUD
82. static VALUE sock_connect(VALUE self, VALUE addr) { // ... int result = rsock_connect( self, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr), 0, RUBY_IO_TIMEOUT_DEFAULT ); // ... return INT2FIX(result); } TPDL@DPOOFDU
    4PDLFUDPOOFDUͷ࣮ମ sock.connect(self) ѼઌͷΞυϨε৘ใΛอ࣋͢Δ
    4PDLFUDPOOFDUͷҾ਺
    "EESJOGPΦϒδΣΫτ
    FYUTPDLFUTPDLFUD
83. static VALUE sock_connect(VALUE self, VALUE addr) { // ... int result = rsock_connect( self, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr), 0, RUBY_IO_TIMEOUT_DEFAULT ); // ... return INT2FIX(result); } TPDL@DPOOFDU
    4PDLFUDPOOFDUͷ࣮ମ
    STPDL@DPOOFDUؔ਺
    FYUTPDLFUTPDLFUD
    Ϩγʔόͷ4PDLFUΦϒδΣΫτ
    
    Ҿ਺Ͱड͚औͬͨѼઌͷΞυϨε৘ใ
    sock.connect(self)
84. TPDL@DPOOFDU
    4PDLFUDPOOFDUͷ࣮ମ static VALUE sock_connect(VALUE self, VALUE addr) { // ... int result = rsock_connect( self, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr), 0, RUBY_IO_TIMEOUT_DEFAULT ); // ... return INT2FIX(result); }
    
    STPDL@DPOOFDUؔ਺͸಺෦Ͱ
    
    
    DPOOFDU@CMPDLJOHؔ਺ΛݺΜͰ͍Δ FYUTPDLFUTPDLFUD
85. DPOOFDU@CMPDLJOH static VALUE connect_blocking(void *data) { struct connect_arg *arg = data; return (VALUE)connect(arg->fd, arg->sockaddr, arg->len); } FYUTPDLFUJOJUD
86. DPOOFDU@CMPDLJOH static VALUE connect_blocking(void *data) { struct connect_arg *arg = data; return (VALUE)connect(arg->fd, arg->sockaddr, arg->len); } FYUTPDLFUJOJUD
    Ҿ਺EBUB
    
    
    DPOOFDU@CMPDLJOHؔ਺͸Ҿ਺EBUBΛհͯ͠
    
    
    STPDL@DPOOFDUؔ਺ʹ౉ͨ͠Ҿ਺ͷத਎Λड͚औΔ
    ɾϨγʔόͷ4PDLFUΦϒδΣΫτ͔Β
    
    
    
    
    औΓग़ͨ͠಺෦৘ใ
    
    ɾѼઌͷΞυϨε৘ใ ʜΛؚΉ
87. DPOOFDU@CMPDLJOH static VALUE connect_blocking(void *data) { struct connect_arg *arg = data; return (VALUE)connect(arg->fd, arg->sockaddr, arg->len); } FYUTPDLFUJOJUD
    Ҿ਺EBUBͷத਎Λม਺BSHʹ֨ೲ
    
88. DPOOFDU@CMPDLJOH static VALUE connect_blocking(void *data) { struct connect_arg *arg = data; return (VALUE)connect(arg->fd, arg->sockaddr, arg->len); }
    
    DPOOFDU@CMPDLJOHؔ਺಺Ͱ
    
    
    γεςϜίʔϧDPOOFDUΛݺͿ
    a
    ॏཁ
    
    DPOOFDU
    γεςϜίʔϧ
    
    ࢦఆͷιέοτΛ࢖ͬͯѼઌͱͷ઀ଓΛ։࢝͢Δ
    FYUTPDLFUJOJUD ΫϥΠΞϯτ ઀ଓΛ։࢝ Ѽઌ  ྫ
89. DPOOFDU@CMPDLJOH static VALUE connect_blocking(void *data) { struct connect_arg *arg = data; return (VALUE)connect(arg->fd, arg->sockaddr, arg->len); }
    
    ม਺BSH͔ΒιέοτσΟεΫϦϓλΛऔΓग़͠ɺ
    
    
    DPOOFDUͷୈҰҾ਺ʹ౉͢ɻ
    
    
    ͜ΕʹΑΓʮͲͷιέοτΛ࢖͏͔ʯΛࢦఆ͍ͯ͠Δ FYUTPDLFUJOJUD
    ม਺BSH͔ΒऔΓग़ͨ͠ιέοτσΟεΫϦϓλ
    
90. DPOOFDU@CMPDLJOH static VALUE connect_blocking(void *data) { struct connect_arg *arg = data; return (VALUE)connect(arg->fd, arg->sockaddr, arg->len); }
    ม਺BSH͔ΒऔΓग़ͨ͠઀ଓઌͷΞυϨε৘ใ
    
    
    ม਺BSH͔ΒѼઌͷΞυϨε৘ใΛऔΓग़͠ɺ
    
    
    DPOOFDUͷୈೋҾ਺ʹ౉͢ɻ
    
    
    ͜ΕʹΑΓʮͲ͜Ѽʹ઀ଓ͢Δ͔ʯΛࢦఆ͍ͯ͠Δ FYUTPDLFUJOJUD
91. DPOOFDU@CMPDLJOH static VALUE connect_blocking(void *data) { struct connect_arg *arg = data; return (VALUE)connect(arg->fd, arg->sockaddr, arg->len); }
    
    ઀ଓʹ੒ޭ͢ΔͱDPOOFDU͸଴ػΛղআ͠
    
    
    ౰֘ιέοτ͸Ѽઌϗετͱ઀ଓࡁΈͷঢ়ଶʹͳΔ
    
    FYUTPDLFUJOJUD
    ઀ଓࢼߦ։࢝ޙɺ઀ଓঢ়ଶ͕֬ఆ͢Δ·Ͱ଴ػ͢Δ
    ˞
    ౰֘ιέοτ͕ϊϯϒϩοΩϯάϞʔυʹઃఆ͞Ε͍ͯͳ͍৔߹ ˞ ΫϥΠΞϯτ αʔό aa઀ଓཱ֬
92. DPOOFDU@CMPDLJOH static VALUE connect_blocking(void *data) { struct connect_arg *arg = data; return (VALUE)connect(arg->fd, arg->sockaddr, arg->len); }
    
    4PDLFUDPOOFDUͷ಺෦࣮૷͸͜͜·Ͱ FYUTPDLFUJOJUD
93. 
    
    
    
    
    
    
    
    "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end FYUTPDLFUMJCTPDLFUSC ࠶ͼ
    4PDLFUDPOOFDU
    
    
    ࢦఆͷιέοτΛ࢖ͬͯѼઌʹ઀ଓΛ։࢝͢Δ
94. "EESJOGPDPOOFDU@JOUFSOBM class Addrinfo # ... def connect_internal(...) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.connect(self) rescue Exception sock.close raise end # ... sock end # ... end
    
    "EESJOGPDPOOFDU@JOUFSOBM͸ɺѼઌϗετͱ
    
    
    ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛฦͯ͠ऴྃ
    αʔόͱ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛฦ͢
    FYUTPDLFUMJCTPDLFUSC
    4PDLFUDPOOFDU
    
95. 
    
    
    
    
    
    
    
    
    4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL def self.tcp_without_fast_fallback(host, port, ...) # ... Addrinfo.foreach(host, port, nil, :STREAM, ...) {|ai| # ... begin sock = ai.connect(...) rescue SystemCallError last_error = $! next end ret = sock break } # ... ret end FYUTPDLFUMJCTPDLFUSC ࠶ͼ
    "EESJOGPDPOOFDU
    
    
    4PDLFUΦϒδΣΫτΛ࡞੒ˠ઀ଓ
    ಺෦Ͱ"EESJOGPDPOOFDU@JOUFSOBMΛݺͿ
    
96. 4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL def self.tcp_without_fast_fallback(host, port, ...) # ... Addrinfo.foreach(host, port, nil, :STREAM, ...) {|ai| # ... begin sock = ai.connect(...) rescue SystemCallError last_error = $! next end ret = sock break } # ... ret end
    
    "EESJOGPDPOOFDUͷฦΓ஋ͱͯ͠
    
    
    ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛม਺SFUʹอଘ্ͨ͠
    
    
    "EESJOGPGPSFBDIͷϧʔϓΛCSFBL
    
    ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛ
    
    
    ม਺TPDLʹอଘ
    
    ม਺TPDLΛม਺SFUʹอଘͯ͠CSFBL
    FYUTPDLFUMJCTPDLFUSC
97. 4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL def self.tcp_without_fast_fallback(host, port, ...) # ... Addrinfo.foreach(host, port, nil, :STREAM, ...) {|ai| # ... begin sock = ai.connect(...) rescue SystemCallError last_error = $! next end ret = sock break } # ... ret end
    
    ࠷ޙʹม਺SFU
    ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτ
    Λ
    
    
    ฦͯ͠4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL͸ऴྃ
    ฦΓ஋
    FYUTPDLFUMJCTPDLFUSC
98. 
    
    
    
    
    
    
    
    
    4PDLFUUDQ def self.tcp(host, port, ... fast_fallback: tcp_fast_fallback, &) sock = if fast_fallback && !(host && ip_address?(host)) tcp_with_fast_fallback(host, port, ...) else tcp_without_fast_fallback(host, port, ...) end if block_given? begin yield sock ensure sock.close end else sock end end FYUTPDLFUMJCTPDLFUSC ࠶ͼ
    4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL
    
    
    ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛऔಘ
99. 4PDLFUUDQ def self.tcp(host, port, ... fast_fallback: tcp_fast_fallback, &) sock = if fast_fallback && !(host && ip_address?(host)) tcp_with_fast_fallback(host, port, ...) else tcp_without_fast_fallback(host, port, ...) end if block_given? begin yield sock ensure sock.close end else sock end end FYUTPDLFUMJCTPDLFUSC
    ฦΓ஋ͷ4PDLFUΦϒδΣΫτΛม਺TPDLʹ֨ೲ
    
    
    4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDLͷฦΓ஋Ͱ͋Δ
    
    
    ઀ଓࡁΈ4PDLFUΦϒδΣΫτΛม਺TPDLʹอଘ
    4PDLFUUDQ@XJUIPVU@GBTU@GBMMCBDL
    
    
    ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛऔಘ
100. 4PDLFUUDQ def self.tcp(host, port, ... fast_fallback: tcp_fast_fallback, &) sock = if fast_fallback && !(host && ip_address?(host)) tcp_with_fast_fallback(host, port, ...) else tcp_without_fast_fallback(host, port, ...) end if block_given? begin yield sock ensure sock.close end else sock end end
     
     ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛ࢖ͬͯ
     
     
     4PDLFUUDQͷϒϩοΫΛ࣮ߦ͢Δ FYUTPDLFUMJCTPDLFUSC Socket.tcp(...) do |sock| sock.write "Hi" message = sock.read puts message end
101. 4PDLFUUDQ def self.tcp(host, port, ... fast_fallback: tcp_fast_fallback, &) sock = if fast_fallback && !(host && ip_address?(host)) tcp_with_fast_fallback(host, port, ...) else tcp_without_fast_fallback(host, port, ...) end if block_given? begin yield sock ensure sock.close end else sock end end
     
     ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛ࢖ͬͯ
     
     
     4PDLFUUDQͷϒϩοΫΛ࣮ߦ͢Δ Socket.tcp(...) do |sock| sock.write "Hi" message = sock.read puts message end
     a
     ΰʔϧ
      FYUTPDLFUMJCTPDLFUSC
102. 4PDLFUUDQͷ͘͠Έ ΫϥΠΞϯτ Socket.tcp Λ࣮ߦ
103. 4PDLFUUDQͷ͘͠Έ ΫϥΠΞϯτ Socket.tcp 1. Addrinfo.getaddrinfo Λ࣮ߦ ϗετ໊Λ*1ΞυϨεʹղܾ͢Δ
     ΞυϨε৘ใΛ"EESJOGPΦϒδΣΫτͯ͠ѻ͑ΔΑ͏ʹ͢Δ
104. 4PDLFUUDQͷ͘͠Έ ΫϥΠΞϯτ Socket.tcp 2. Socket.new (Socket#initialize) socket Λ࣮ߦ ϗετ಺ʹιέοτΛ࡞੒͢Δ
     ιέοτΛ4PLDFUΦϒδΣΫτͯ͠ѻ͑ΔΑ͏ʹ͢Δ ➡︎
105. 4PDLFUUDQͷ͘͠Έ ΫϥΠΞϯτ Socket.tcp 3. Socket#connect connect Λ࣮ߦ ࡞੒ͨ͠ιέοτΛར༻͠ɺ
     ղܾͨ͠*1ΞυϨεѼʹ઀ଓ։࢝
     ˠ
     ੒ޭͨ͠Β଴ػղআ
     αʔόͱ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛฦ͢ ➡︎
106. 4PDLFUUDQͷ͘͠Έ ΫϥΠΞϯτ Socket.tcp 4. Λ࣮ߦ ͜ͷ4PDLFUΦϒδΣΫτʹ
     ϦΫΤετϝοηʔδΛॻ͖ࠐΜͩΓ
     ૹ৴
     ϨεϙϯεϝοηʔδΛಡΈࠐΜͩΓ
     ड৴
     ͢Δ ϒϩοΫΛ࣮ߦ
     a
     ΰʔϧ
     
107. 4PDLFUUDQ@TFSWFS@MPPQ
     αʔό
     ฤ Socket.tcp_server_loop("localhost", 4567) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end
108. 4PDLFUUDQ@TFSWFS@MPPQ class Socket # ... def self.tcp_server_loop(host=nil, port, &b) tcp_server_sockets(host, port) {|sockets| accept_loop(sockets, &b) } end # ... end FYUTPDLFUMJCTPDLFUSC
109. class Socket # ... def self.tcp_server_loop(host=nil, port, &b) tcp_server_sockets(host, port) {|sockets| accept_loop(sockets, &b) } end # ... end 4PDLFUUDQ@TFSWFS@MPPQ
     4PDLFUUDQ@TFSWFS@TPDLFUT
     
     ϗετ໊
     
     ϙʔτ൪߸
     FYUTPDLFUMJCTPDLFUSC
     
     4PDLFUUDQ@TFSWFS@TPDLFUTΛݺͼग़͢ αʔόࣗ਎ͷ
110. 4PDLFUUDQ@TFSWFS@TPDLFUT def self.tcp_server_sockets(host=nil, port, &b) if port == 0 sockets = tcp_server_sockets_port0(host) else last_error = nil sockets = [] begin # ... rescue Exception sockets.each(&:close) raise end # ... end end
     ϗετ໊ɾϙʔτ൪߸
     FYUTPDLFUMJCTPDLFUSC
111. 4PDLFUUDQ@TFSWFS@TPDLFUT def self.tcp_server_sockets(host=nil, port, &b) if port == 0 sockets = tcp_server_sockets_port0(host) else last_error = nil sockets = [] begin # ... rescue Exception sockets.each(&:close) raise end # ... end end
     ϙʔτ൪߸ʹΛ౉͍ͯ͠Δ৔߹
     
     ϙʔτ൪߸ʹҎ֎Λ౉͍ͯ͠Δ৔߹
     
     ίʔυϦʔσΟϯάͷ༰қ͔͞Βɺ
     
     
     ࠓճ͸ͪ͜ΒΛಡΈ·͢
     
     ϗετ໊ɾϙʔτ൪߸
     FYUTPDLFUMJCTPDLFUSC
112. 4PDLFUUDQ@TFSWFS@TPDLFUT
     last_error = nil sockets = [] begin # ... Addrinfo.foreach(host, port, nil, :STREAM, nil, Socket::AI_PASSIVE) {|ai| begin s = ai.listen rescue SystemCallError last_error = $! next end sockets << s # ... } # ... end FYUTPDLFUMJCTPDLFUSC ˞
     if port == 0
     ͷ
     else
     અͷத
113. 4PDLFUUDQ@TFSWFS@TPDLFUT
     last_error = nil sockets = [] begin # ... Addrinfo.foreach(host, port, nil, :STREAM, nil, Socket::AI_PASSIVE) {|ai| begin s = ai.listen rescue SystemCallError last_error = $! next end sockets << s # ... } # ... end
     "EESJOGPGPSFBDI
     FYUTPDLFUMJCTPDLFUSC ˞
     if port == 0
     ͷ
     else
     અͷத
     
     αʔόࣗ਎ͷϗετ໊ͷ໊લղܾΛߦ͏
114. 4PDLFUUDQ@TFSWFS@TPDLFUT last_error = nil sockets = [] begin # ... Addrinfo.foreach(host, port, nil, :STREAM, nil, Socket::AI_PASSIVE) {|ai| begin s = ai.listen rescue SystemCallError last_error = $! next end sockets << s # ... } # ... end [#<Addrinfo: 127.0.0.1 TCP (localhost)>, #<Addrinfo: ::1 TCP (localhost)>] FYUTPDLFUMJCTPDLFUSC "localhost"
     "EESJOGPΦϒδΣΫτ
     ˞
     if port == 0
     ͷ
     else
     અͷத ˞
     ྫ ˞
     ྫ
     
     ղܾͨ͠*1ΞυϨεΛද͢"EESJOGPΦϒδΣΫτ͕
     
     
     ϒϩοΫม਺BJʹ౉ͬͯ͘Δ
115. 4PDLFUUDQ@TFSWFS@TPDLFUT last_error = nil sockets = [] begin # ... Addrinfo.foreach(host, port, nil, :STREAM, nil, Socket::AI_PASSIVE) {|ai| begin s = ai.listen rescue SystemCallError last_error = $! next end sockets << s # ... } # ... end
     "EESJOGPMJTUFO
     FYUTPDLFUMJCTPDLFUSC ˞
     if port == 0
     ͷ
     else
     અͷத
     "EESJOGPΦϒδΣΫτ
     
116. "EESJOGPMJTUFO class Addrinfo def listen(backlog=Socket::SOMAXCONN) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.bind(self) sock.listen(backlog) rescue Exception sock.close raise end # ... sock end end FYUTPDLFUMJCTPDLFUSC
117. "EESJOGPMJTUFO class Addrinfo def listen(backlog=Socket::SOMAXCONN) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.bind(self) sock.listen(backlog) rescue Exception sock.close raise end # ... sock end end FYUTPDLFUMJCTPDLFUSC
     4PDLFUOFX
     
     
     ৽͍͠4PDLFUΦϒδΣΫτΛ࡞੒͢Δ
118. "EESJOGPMJTUFO class Addrinfo def listen(backlog=Socket::SOMAXCONN) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin # ... sock.bind(self) sock.listen(backlog) rescue Exception sock.close raise end # ... sock end end FYUTPDLFUMJCTPDLFUSC
     ม਺TPDLʹରͯ͠4PDLFUCJOE
     
     TFMG
     
     αʔόࣗ਎ͷΞυϨε৘ใ
     "EESJOGPΦϒδΣΫτ
     
     
     ࡞੒ͨ͠4PDLFUΦϒδΣΫτʹରͯ͠
     
     
     4PDLFUCJOEϝιουΛݺͿ
     ࡞੒ͨ͠4PDLFUΦϒδΣΫτΛม਺TPDLʹ֨ೲ
     
119. 4PDLFUCJOE void Init_socket(void) { // ... rb_cSocket = rb_define_class("Socket", rb_cBasicSocket); // ... rb_define_method(rb_cSocket, "bind", sock_bind, 1); // ... }
     
     4PDLFUCJOE͸
     
     
     ࣮ମͱͯ͠͸TPDL@CJOEؔ਺ʹ࣮૷͞Ε͍ͯΔ FYUTPDLFUTPDLFUD
     4PDLFUCJOEΛఆٛ
     
     4PDLFUΫϥεΛఆٛ
     
     4PDLFUCJOEͷ಺෦࣮૷
     
120. TPDL@CJOE
     4PDLFUCJOEͷ࣮ମ static VALUE sock_bind(VALUE sock, VALUE addr) { VALUE rai; rb_io_t *fptr; SockAddrStringValueWithAddrinfo(addr, rai); GetOpenFile(sock, fptr); if (bind(fptr->fd, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr)) < 0) { rsock_sys_fail_raddrinfo_or_sockaddr("bind(2)", addr, rai); } return INT2FIX(0); } FYUTPDLFUTPDLFUD
121. TPDL@CJOE
     4PDLFUCJOEͷ࣮ମ static VALUE sock_bind(VALUE sock, VALUE addr) { VALUE rai; rb_io_t *fptr; SockAddrStringValueWithAddrinfo(addr, rai); GetOpenFile(sock, fptr); if (bind(fptr->fd, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr)) < 0) { rsock_sys_fail_raddrinfo_or_sockaddr("bind(2)", addr, rai); } return INT2FIX(0); } sock.bind(self)
     ୈҰҾ਺ʜ4PDLFUCJOEͷϨγʔό
     4PDLFUΦϒδΣΫτ
     
     ୈೋҾ਺ʜ4PDLFUCJOEͷҾ਺
     "EESJOGPΦϒδΣΫτ
     ࣗ਎ͷΞυϨε৘ใΛอ࣋͢Δ FYUTPDLFUTPDLFUD
122. static VALUE sock_bind(VALUE sock, VALUE addr) { VALUE rai; rb_io_t *fptr; SockAddrStringValueWithAddrinfo(addr, rai); GetOpenFile(sock, fptr); if (bind(fptr->fd, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr)) < 0) { rsock_sys_fail_raddrinfo_or_sockaddr("bind(2)", addr, rai); } return INT2FIX(0); } TPDL@CJOE
     4PDLFUCJOEͷ࣮ମ
     Ϩγʔόͷ4PDLFUΦϒδΣΫτ͔Β
     
     ಺෦৘ใΛऔಘͯ͠ม਺GQUSʹอଘ
     FYUTPDLFUTPDLFUD
     (FU0QFO'JMFϚΫϩ
     
123. static VALUE sock_bind(VALUE sock, VALUE addr) { VALUE rai; rb_io_t *fptr; SockAddrStringValueWithAddrinfo(addr, rai); GetOpenFile(sock, fptr); if (bind(fptr->fd, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr)) < 0) { rsock_sys_fail_raddrinfo_or_sockaddr("bind(2)", addr, rai); } return INT2FIX(0); } TPDL@CJOE
     4PDLFUCJOEͷ࣮ମ
     
     TPDL@CJOEؔ਺಺ͰγεςϜίʔϧCJOEΛݺΜͰ͍Δ
     a
     ॏཁ
      FYUTPDLFUTPDLFUD
     ࢦఆͷιέοτʹಛఆͷΞυϨεΛඥ͚ͮΔ
     
     CJOE
     γεςϜίʔϧ
     
124. static VALUE sock_bind(VALUE sock, VALUE addr) { VALUE rai; rb_io_t *fptr; SockAddrStringValueWithAddrinfo(addr, rai); GetOpenFile(sock, fptr); if (bind(fptr->fd, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr)) < 0) { rsock_sys_fail_raddrinfo_or_sockaddr("bind(2)", addr, rai); } return INT2FIX(0); } TPDL@CJOE
     4PDLFUCJOEͷ࣮ମ
     
     ม਺GQUS͔ΒऔΓग़ͨ͠ιέοτσΟεΫϦϓλΛ
     
     
     CJOEͷୈҰҾ਺ʹ౉͢ɻ
     
     
     ͜ΕʹΑΓʮͲͷιέοτΛ࢖͏͔ʯΛࢦఆ͍ͯ͠Δ
     ม਺GQUS͔ΒऔΓग़ͨ͠ιέοτσΟεΫϦϓλ
     FYUTPDLFUTPDLFUD
125. static VALUE sock_bind(VALUE sock, VALUE addr) { VALUE rai; rb_io_t *fptr; SockAddrStringValueWithAddrinfo(addr, rai); GetOpenFile(sock, fptr); if (bind(fptr->fd, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr)) < 0) { rsock_sys_fail_raddrinfo_or_sockaddr("bind(2)", addr, rai); } return INT2FIX(0); } TPDL@CJOE
     4PDLFUCJOEͷ࣮ମ
     
     CJOEͷୈೋҾ਺ʹαʔόࣗ਎ͷΞυϨε৘ใΛ౉͢ɻ
     
     
     ͜ΕʹΑΓʮͲͷΞυϨεΛιέοτʹඥ͚ͮΔ͔ʯΛ
     
     
     ࢦఆ͍ͯ͠Δ
     ࣗ਎ͷΞυϨε৘ใ
     FYUTPDLFUTPDLFUD
126. static VALUE sock_bind(VALUE sock, VALUE addr) { VALUE rai; rb_io_t *fptr; SockAddrStringValueWithAddrinfo(addr, rai); GetOpenFile(sock, fptr); if (bind(fptr->fd, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr)) < 0) { rsock_sys_fail_raddrinfo_or_sockaddr("bind(2)", addr, rai); } return INT2FIX(0); } TPDL@CJOE
     4PDLFUCJOEͷ࣮ମ
     
     CJOEΛݺͼग़͢͜ͱʹΑΓɺ
     
     
     ʮͲͷιέοτ͕Ͳͷ*1ΞυϨεͰ
     
     ɹ
     ϦΫΤετΛ଴ػ͢Δ͔ʯΛࢦఆ͍ͯ͠Δ FYUTPDLFUTPDLFUD ϦΫΤετΛ଴ػ͢ΔΞυϨε *1ΞυϨεΛඥ෇͚  ྫ
127. static VALUE sock_bind(VALUE sock, VALUE addr) { VALUE rai; rb_io_t *fptr; SockAddrStringValueWithAddrinfo(addr, rai); GetOpenFile(sock, fptr); if (bind(fptr->fd, (struct sockaddr*)RSTRING_PTR(addr), RSTRING_SOCKLEN(addr)) < 0) { rsock_sys_fail_raddrinfo_or_sockaddr("bind(2)", addr, rai); } return INT2FIX(0); } TPDL@CJOE
     4PDLFUCJOEͷ࣮ମ
     
     4PDLFUCJOEͷ಺෦࣮૷͸͜͜·Ͱ FYUTPDLFUTPDLFUD *1ΞυϨεΛඥ෇͚
128. 
     
     
     
     
     
     
     
     "EESJOGPMJTUFO class Addrinfo def listen(backlog=Socket::SOMAXCONN) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin sock.ipv6only! if self.ipv6? # ... sock.bind(self) sock.listen(backlog) rescue Exception sock.close raise end # ... sock end end FYUTPDLFUMJCTPDLFUSC
     4PDLFUCJOE
     
     
     ࢦఆͷιέοτͱࣗ਎ͷΞυϨεΛඥ͚ͮΔ ࠶ͼ
129. "EESJOGPMJTUFO class Addrinfo def listen(backlog=Socket::SOMAXCONN) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin sock.ipv6only! if self.ipv6? # ... sock.bind(self) sock.listen(backlog) rescue Exception sock.close raise end # ... sock end end FYUTPDLFUMJCTPDLFUSC
     4PDLFUMJTUFO
     
130. 4PDLFUMJTUFO void Init_socket(void) { // ... rb_cSocket = rb_define_class("Socket", rb_cBasicSocket); // ... rb_define_method(rb_cSocket, "bind", sock_bind, 1); rb_define_method(rb_cSocket, "listen", rsock_sock_listen, 1); // ... } FYUTPDLFUTPDLFUD
     4PDLFUΫϥεΛఆٛ
     
     
     4PDLFUMJTUFO͸
     
     
     ࣮ମͱͯ͠͸STPDL@TPDL@MJTUFOؔ਺ʹ࣮૷͞Ε͍ͯΔ
     4PDLFUMJTUFOΛఆٛ
     
     4PDLFUMJTUFOͷ಺෦࣮૷
     
131. STPDL@TPDL@MJTUFO
     4PDLFUMJTUFOͷ࣮ମ VALUE rsock_sock_listen(VALUE sock, VALUE log) { rb_io_t *fptr; int backlog; backlog = NUM2INT(log); GetOpenFile(sock, fptr); if (listen(fptr->fd, backlog) < 0) rb_sys_fail("listen(2)"); return INT2FIX(0); }
132. STPDL@TPDL@MJTUFO
     4PDLFUMJTUFOͷ࣮ମ VALUE rsock_sock_listen(VALUE sock, VALUE log) { rb_io_t *fptr; int backlog; backlog = NUM2INT(log); GetOpenFile(sock, fptr); if (listen(fptr->fd, backlog) < 0) rb_sys_fail("listen(2)"); return INT2FIX(0); }
     4PDLFUMJTUFOͷϨγʔό
     4PDLFUΦϒδΣΫτ
     
     Ϩγʔόͷ4PDLFUΦϒδΣΫτ͔Β
     
     ಺෦৘ใΛऔಘͯ͠ม਺GQUSʹอଘ
     
     (FU0QFO'JMFϚΫϩ
     
133. VALUE rsock_sock_listen(VALUE sock, VALUE log) { rb_io_t *fptr; int backlog; backlog = NUM2INT(log); GetOpenFile(sock, fptr); if (listen(fptr->fd, backlog) < 0) rb_sys_fail("listen(2)"); return INT2FIX(0); } STPDL@TPDL@MJTUFO
     4PDLFUMJTUFOͷ࣮ମ
     
     STPDL@TPDL@MJTUFOؔ਺಺Ͱ
     
     
     γεςϜίʔϧMJOTUFOΛݺΜͰ͍Δ
     a
     ॏཁ
     
     MJTUFO
     γεςϜίʔϧ
     
     ࢦఆͷιέοτͰ઀ଓΛ଴ͪड͚Δ
     
134. VALUE rsock_sock_listen(VALUE sock, VALUE log) { rb_io_t *fptr; int backlog; backlog = NUM2INT(log); GetOpenFile(sock, fptr); if (listen(fptr->fd, backlog) < 0) rb_sys_fail("listen(2)"); return INT2FIX(0); } STPDL@TPDL@MJTUFO
     4PDLFUMJTUFOͷ࣮ମ
     ม਺GQUS͔ΒऔΓग़ͨ͠ιέοτσΟεΫϦϓλ
     
     
     ม਺GQUS͔ΒऔΓग़ͨ͠ιέοτσΟεΫϦϓλΛ
     
     
     MJTUFOͷୈҰҾ਺ʹ౉͢ɻ
     
     
     ͜ΕʹΑΓʮͲͷιέοτΛ࢖͏͔ʯΛࢦఆ͍ͯ͠Δ
135. VALUE rsock_sock_listen(VALUE sock, VALUE log) { rb_io_t *fptr; int backlog; backlog = NUM2INT(log); GetOpenFile(sock, fptr); if (listen(fptr->fd, backlog) < 0) rb_sys_fail("listen(2)"); return INT2FIX(0); } STPDL@TPDL@MJTUFO
     4PDLFUMJTUFOͷ࣮ମ
     
     MJTUFOΛݺͼग़͢͜ͱʹΑΓɺ
     
     
     ࣮ࡍʹ͜ͷιέοτͰͷ઀ଓ଴ػ͕։࢝͢Δ  ྫ ઀ଓ଴ͪ
136. VALUE rsock_sock_listen(VALUE sock, VALUE log) { rb_io_t *fptr; int backlog; backlog = NUM2INT(log); GetOpenFile(sock, fptr); if (listen(fptr->fd, backlog) < 0) rb_sys_fail("listen(2)"); return INT2FIX(0); } STPDL@TPDL@MJTUFO
     4PDLFUMJTUFOͷ࣮ମ
     
     4PDLFUMJTUFOͷ಺෦࣮૷͸͜͜·Ͱ ઀ଓ଴ͪ
137. 
     
     
     
     
     
     
     
     "EESJOGPMJTUFO class Addrinfo def listen(backlog=Socket::SOMAXCONN) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin sock.ipv6only! if self.ipv6? # ... sock.bind(self) sock.listen(backlog) rescue Exception sock.close raise end # ... sock end end FYUTPDLFUMJCTPDLFUSC ࠶ͼ
     4PDLFUMJTUFO
     
     
     ࢦఆͷιέοτͰ઀ଓΛ଴ػ͢Δ
138. "EESJOGPMJTUFO class Addrinfo def listen(backlog=Socket::SOMAXCONN) sock = Socket.new(self.pfamily, self.socktype, self.protocol) begin sock.ipv6only! if self.ipv6? # ... sock.bind(self) sock.listen(backlog) rescue Exception sock.close raise end # ... sock end end FYUTPDLFUMJCTPDLFUSC
     ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτ
     
     
     4PDLFUΦϒδΣΫτΛฦͯ͠"EESJOGPMJTUFOΛऴྃ
139. 
     
     
     
     
     
     
     
     4PDLFUUDQ@TFSWFS@TPDLFUT last_error = nil sockets = [] begin # ... Addrinfo.foreach(host, port, nil, :STREAM, nil, Socket::AI_PASSIVE) {|ai| begin s = ai.listen rescue SystemCallError last_error = $! next end sockets << s # ... } # ... end ࠶ͼ ˞
     if port == 0
     ͷ
     else
     અͷத
     "EESJOGPMJTUFO
     
     
     ৽͘͠ιέοτΛ࡞੒
     
     
     ɹ
     ˠ
     ࣗ෼ࣗ਎ͷΞυϨεΛඥ෇͚
     
     
     ɹ
     ˠ
     ઀ଓ଴ػΛ։࢝
140. 4PDLFUUDQ@TFSWFS@TPDLFUT last_error = nil sockets = [] begin # ... Addrinfo.foreach(host, port, nil, :STREAM, nil, Socket::AI_PASSIVE) {|ai| begin s = ai.listen rescue SystemCallError last_error = $! next end sockets << s # ... } # ... end
     
     "EESJOGPMJTUFOͷฦΓ஋ͱͯ͠
     
     
     ઀ଓ଴ػΛ։࢝ͨ͠4PDLFUΦϒδΣΫτΛ
     
     
     ഑ྻTPDLFUTʹ֨ೲ
     ม਺Tʹ֨ೲͨ͠4PDLFUΦϒδΣΫτΛ഑ྻTPDLFUTʹ֨ೲ
     ˞
     if port == 0
     ͷ
     else
     અͷத
     "EESJOGPMJTUFO
     
     ฦΓ஋ͷ4PDLFUΦϒδΣΫτΛม਺Tʹ֨ೲ
     
141. last_error = nil sockets = [] begin # ... Addrinfo.foreach(host, port, nil, :STREAM, nil, Socket::AI_PASSIVE) {|ai| begin s = ai.listen rescue SystemCallError last_error = $! next end sockets << s # ... } # ... end [#<Addrinfo: 127.0.0.1 TCP (localhost)>, #<Addrinfo: ::1 TCP (localhost)>] FYUTPDLFUMJCTPDLFUSC "localhost"
     
     ͜͜·Ͱͷॲཧ
     ιέοτͷ࡞੒ɺΞυϨεͷඥ෇͚ɺ
     
     
     ઀ଓ଴ػ։࢝ɺ഑ྻ΁ͷอଘ Λɺ໊લղܾͰऔಘͨ͠
     
     
     ͢΂ͯͷ"EESJOGPΦϒδΣΫτʹରͯ͠܁Γฦ͢ ˞
     ྫ ˞
     ྫ
     "EESJOGPMJTUFO
     4PDLFUUDQ@TFSWFS@TPDLFUT
142. 
     
     
     
     
     
     
     
     
     
     
     4PDLFUUDQ@TFSWFS@TPDLFUT def self.tcp_server_sockets(host=nil, port, &b) if port == 0 sockets = tcp_server_sockets_port0(host) else end if block_given? begin yield sockets ensure sockets.each(&:close) end else sockets end end
     ઌ΄Ͳ·Ͱͷॲཧ
     
     
     4PDLFUUDQ@TFSWFS@TPDLFUTϝιουͷଓ͖
     
     
     "EESJOGPGPSFBDI͕ऴྃͯ͠ɺ
     
     
     
     
     if port == 0
     ͷ
     else
     અΛൈ͚ͨޙ Ҿ͖ଓ͖
     
     ഑ྻTPDLFUTʹ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτ͕อଘ͞Ε͍ͯΔ
     FYUTPDLFUMJCTPDLFUSC
143. 4PDLFUUDQ@TFSWFS@TPDLFUT def self.tcp_server_sockets(host=nil, port, &b) if port == 0 sockets = tcp_server_sockets_port0(host) else end if block_given? begin yield sockets ensure sockets.each(&:close) end else sockets end end
     
     ͜ͷϝιουͷݺͼग़࣌͠ʹ౉͞Ε͍ͯͨ
     
     
     ϒϩοΫΛ࣮ߦ͢Δ
     def self.tcp_server_loop(host=nil, port, &b) tcp_server_sockets(host, port) {|sockets| accept_loop(sockets, &b) } end
     ઌ΄Ͳ·Ͱͷॲཧ
     FYUTPDLFUMJCTPDLFUSC
     ϒϩοΫ
     
144. 4PDLFUUDQ@TFSWFS@TPDLFUT def self.tcp_server_sockets(host=nil, port, &b) if port == 0 sockets = tcp_server_sockets_port0(host) else end if block_given? begin yield sockets ensure sockets.each(&:close) end else sockets end end def self.tcp_server_loop(host=nil, port, &b) tcp_server_sockets(host, port) {|sockets| accept_loop(sockets, &b) } end
     4PDLFUBDDFQU@MPPQ
     
     ઌ΄Ͳ·Ͱͷॲཧ
     FYUTPDLFUMJCTPDLFUSC
145. 4PDLFUUDQ@TFSWFS@TPDLFUT def self.tcp_server_sockets(host=nil, port, &b) if port == 0 sockets = tcp_server_sockets_port0(host) else end if block_given? begin yield sockets ensure sockets.each(&:close) end else sockets end end def self.tcp_server_loop(host=nil, port, &b) tcp_server_sockets(host, port) {|sockets| accept_loop(sockets, &b) } end
     ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτͷ഑ྻ
     
     ઌ΄Ͳ·Ͱͷॲཧ
     FYUTPDLFUMJCTPDLFUSC
146. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end FYUTPDLFUMJCTPDLFUSC
147. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτͷ഑ྻ
     
     
     4PDLFUBDDFQU@MPPQ
     ͸Ҿ਺ͱͯ͠
     
     
     ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτͷ഑ྻΛड͚औΔ
     FYUTPDLFUMJCTPDLFUSC
148. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     ϧʔϓॲཧ
     FYUTPDLFUMJCTPDLFUSC
149. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     ϧʔϓॲཧ
     
     
     αʔό͸ΫϥΠΞϯτ͔ΒԿ౓΋
     
     
     ϦΫΤετΛड͚ΔͨΊɺ
     
     
     Ұ࿈ͷॲཧΛϧʔϓͯ͠ߦ͍ͬͯΔ FYUTPDLFUMJCTPDLFUSC
150. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     *0TFMFDU
     
     TPDLFUT
     
     ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτͷ഑ྻ
     
     
     *0TFMFDUʹ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτͷ഑ྻΛ
     
     
     ౉ͯ͠ݺͼग़͢ FYUTPDLFUMJCTPDLFUSC
151. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     *0TFMFDU
     
     TPDLFUT
     
     ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτͷ഑ྻ
     
     
     *0TFMFDU͸
     
     
     Ҿ਺ʹ౉͍ͯ͠Δ4PDLFUΦϒδΣΫτͷ͍ͣΕ͔ʹ
     
     
     ϦΫΤετ͕ಧ͘·Ͱɺ͜͜ͰॲཧΛϒϩοΫ͢Δ FYUTPDLFUMJCTPDLFUSC
152. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     *0TFMFDU
     
     TPDLFUT
     
     ઀ଓ଴ػதͷ4PDLFUΦϒδΣΫτͷ഑ྻ
     
     
     ͍ͣΕ͔ͷ4PDLFUΦϒδΣΫτʹϦΫΤετ͕ಧ͘ͱɺ FYUTPDLFUMJCTPDLFUSC
153. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     *0TFMFDUͷฦΓ஋
     
     SFBEBCMF
     
     ϦΫΤετ͕ಧ͍ͨ4PDLFUΦϒδΣΫτͷ഑ྻ
     
     
     *0TFMFDU͸଴ػΛղআ͠ɺ
     
     
     ର৅ͷ4PDLFUΦϒδΣΫτΛཁૉʹ࣋ͭ
     
     
     ഑ྻSFBEBCMFΛฦ͢ FYUTPDLFUMJCTPDLFUSC
154. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) sockets.flatten!(1) if sockets.empty? raise ArgumentError, "no sockets" end loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     4PDLFUBDDFQU@OPOCMPDL
     
     
     ϦΫΤετ͕ಧ͍ͨ4PDLFUΦϒδΣΫτʹରͯ͠
     
     
     ॱʹ4PDLFUBDDFQU@OPOCMPDLϝιουΛݺͼग़͢
     ϦΫΤετ͕ಧ͍ͨ4PDLFUΦϒδΣΫτ
     FYUTPDLFUMJCTPDLFUSC
155. 4PDLFUBDDFQU@OPOCMPDL def accept_nonblock(exception: true) __accept_nonblock(exception) end FYUTPDLFUMJCTPDLFUSC
156. 4PDLFUBDDFQU@OPOCMPDL def accept_nonblock(exception: true) __accept_nonblock(exception) end FYUTPDLFUMJCTPDLFUSC
     4PDLFU@@BDDFQU@OPOCMPDL
     
157. 4PDLFU@@BDDFQU@OPOCMPDL void Init_socket(void) { // ... rb_cSocket = rb_define_class("Socket", rb_cBasicSocket); // ... /* for ext/socket/lib/socket.rb use only: */ rb_define_private_method(rb_cSocket, "__accept_nonblock", sock_accept_nonblock, 1); // ... } FYUTPDLFUTPDLFUD
     
     4PDLFU@@BDDFQU@OPOCMPDL͸$Ͱ࣮૷͞Ε͍ͯΔ
     
     
     TPDLFUSCϑΝΠϧ͔Βݺͼग़ͨ͢Ί͚ͩʹ࣮૷͞Ε͍ͯΔ
     4PDLFUΫϥεΛఆٛ
     
     4PDLFU@@BDDFQU@OPOCMPDLΛఆٛ
     
     4PDLFU@@BDDFQU@OPOCMPDLͷ಺෦࣮૷
     
158. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ FYUTPDLFUTPDLFUD
159. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ FYUTPDLFUTPDLFUD
     4PDLFUBDDFQU@OPOCMPDLͷϨγʔό
     4PDLFUΦϒδΣΫτ
     
160. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ FYUTPDLFUTPDLFUD
     Ϩγʔόͷ4PDLFUΦϒδΣΫτͱ͸ผʹɺ
     
     ৽͍͠4PDLFUΦϒδΣΫτΛ֨ೲ͢ΔͨΊͷ
     
     
     ม਺TPDLΛએݴ
     ͋ͱͰ࢖͏
161. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ FYUTPDLFUTPDLFUD
     4PDLFUBDDFQU@OPOCMPDLͷϨγʔό
     4PDLFUΦϒδΣΫτ
     
     Ϩγʔόͷ4PDLFUΦϒδΣΫτ͔Β
     
     ಺෦৘ใΛऔಘͯ͠ม਺GQUSʹอଘ
     
     (FU0QFO'JMFϚΫϩ
     
162. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ
     STPDL@T@BDDFQU@OPOCMPDLؔ਺
     FYUTPDLFUTPDLFUD
163. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ
     Ϩγʔόͷ4PDLFUΦϒδΣΫτͷ಺෦৘ใ
     FYUTPDLFUTPDLFUD
164. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ
     
     STPDL@T@BDDFQU@OPOCMPDLؔ਺͸
     
     
     ಺෦ͰDMPFYFD@BDDFQUؔ਺ΛݺΜͰ͍Δ FYUTPDLFUTPDLFUD
165. DMPFYFD@BDDFQU static int cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len) { socklen_t len0 = 0; if (address_len) len0 = *address_len; #ifdef HAVE_ACCEPT4 // ... #else int result = accept(socket, address, ...); if (result == -1) return -1; rb_maygvl_fd_fix_cloexec(result); rsock_make_fd_nonblock(result); #endif if (address_len && len0 < *address_len) *address_len = len0; return result; } FYUTPDLFUJOJUD
166. DMPFYFD@BDDFQU static int cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len) { socklen_t len0 = 0; if (address_len) len0 = *address_len; #ifdef HAVE_ACCEPT4 // ... #else int result = accept(socket, address, ...); if (result == -1) return -1; rb_maygvl_fd_fix_cloexec(result); rsock_make_fd_nonblock(result); #endif if (address_len && len0 < *address_len) *address_len = len0; return result; } FYUTPDLFUJOJUD
     Ϩγʔόͷ4PDLFUΦϒδΣΫτͷιέοτσΟεΫϦϓλ
     
167. DMPFYFD@BDDFQU static int cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len) { socklen_t len0 = 0; if (address_len) len0 = *address_len; #ifdef HAVE_ACCEPT4 // ... #else int result = accept(socket, address, ...); if (result == -1) return -1; rb_maygvl_fd_fix_cloexec(result); rsock_make_fd_nonblock(result); #endif if (address_len && len0 < *address_len) *address_len = len0; return result; }
     
     DMPFYFD@BDDFQUؔ਺಺ͰγεςϜίʔϧ
     
     
     BDDFQUΛݺͿ
     BDDFQU
     γεςϜίʔϧ
     
     a
     ॏཁ
      FYUTPDLFUJOJUD
     ΫϥΠΞϯτ͔ΒͷϦΫΤετΛ
     
     
     ࢦఆͷιέοτͰड͚ೖΕΔ ˞
     JGEFG
     )"7&@"$$&15͕GBMTFͷ৔߹
168. DMPFYFD@BDDFQU static int cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len) { socklen_t len0 = 0; if (address_len) len0 = *address_len; #ifdef HAVE_ACCEPT4 // ... #else int result = accept(socket, address, ...); if (result == -1) return -1; rb_maygvl_fd_fix_cloexec(result); rsock_make_fd_nonblock(result); #endif if (address_len && len0 < *address_len) *address_len = len0; return result; } FYUTPDLFUJOJUD
     Ҿ਺ʹιέοτσΟεΫϦϓλΛ౉͠ɺ
     ʮͲͷιέοτͷϦΫΤετΛड͚෇͚Δͷ͔ʯΛࢦఆ
     Ϩγʔόͷ4PDLFUΦϒδΣΫτͷιέοτσΟεΫϦϓλ
     
169. DMPFYFD@BDDFQU static int cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len) { socklen_t len0 = 0; if (address_len) len0 = *address_len; #ifdef HAVE_ACCEPT4 // ... #else int result = accept(socket, address, ...); if (result == -1) return -1; rb_maygvl_fd_fix_cloexec(result); rsock_make_fd_nonblock(result); #endif if (address_len && len0 < *address_len) *address_len = len0; return result; }
     
     BDDFQU͕ϦΫΤετΛड͚෇͚Δͱ FYUTPDLFUJOJUD ΫϥΠΞϯτ αʔό BDDFQU
170. DMPFYFD@BDDFQU static int cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len) { socklen_t len0 = 0; if (address_len) len0 = *address_len; #ifdef HAVE_ACCEPT4 // ... #else int result = accept(socket, address, ...); if (result == -1) return -1; rb_maygvl_fd_fix_cloexec(result); rsock_make_fd_nonblock(result); #endif if (address_len && len0 < *address_len) *address_len = len0; return result; }
     
     ϦΫΤετΛ଴ͪड͚͍ͯΔιέοτ B ͱ͸ผʹ
     
     
     ΫϥΠΞϯτͱ઀ଓ͞Εͨ৽͍͠ιέοτ C ͕࡞੒͞ΕΔ FYUTPDLFUJOJUD ΫϥΠΞϯτ aa઀ଓཱ֬ αʔό C B
171. DMPFYFD@BDDFQU static int cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len) { socklen_t len0 = 0; if (address_len) len0 = *address_len; #ifdef HAVE_ACCEPT4 // ... #else int result = accept(socket, address, ...); if (result == -1) return -1; rb_maygvl_fd_fix_cloexec(result); rsock_make_fd_nonblock(result); #endif if (address_len && len0 < *address_len) *address_len = len0; return result; }
     ΫϥΠΞϯτͱ઀ଓࡁΈͷιέοτͷ
     
     
     ιέοτσΟεΫϦϓλ
     
     
     BDDFQU͸৽͘͠࡞੒͞Εͨιέοτ C ͷ
     
     
     ιέοτσΟεΫϦϓλΛฦ͢ FYUTPDLFUJOJUD ΫϥΠΞϯτ αʔό C B aa઀ଓཱ֬
172. DMPFYFD@BDDFQU static int cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len) { socklen_t len0 = 0; if (address_len) len0 = *address_len; #ifdef HAVE_ACCEPT4 // ... #else int result = accept(socket, address, ...); if (result == -1) return -1; rb_maygvl_fd_fix_cloexec(result); rsock_make_fd_nonblock(result); #endif if (address_len && len0 < *address_len) *address_len = len0; return result; }
     
     DMPFYFD@BDDFQUؔ਺͸৽͘͠࡞੒͞Εͨιέοτ C ͷ
     
     
     ιέοτσΟεΫϦϓλΛฦͯ͠ऴྃ FYUTPDLFUJOJUD ΫϥΠΞϯτ αʔό C B aa઀ଓཱ֬
173. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ FYUTPDLFUTPDLFUD ࠶ͼ
     STPDL@T@BDDFQU@OPOCMPDLؔ਺
     
     ಺෦ͰDMPFYFD@BDDFQUؔ਺ΛݺͿ
     
174. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } FYUTPDLFUTPDLFUD
     
     STPDL@T@BDDFQU@OPOCMPDLؔ਺͸
     
     
     ৽͘͠࡞੒ͨ͠ૉͷιέοτΛ
     
     
     4PDLFUΦϒδΣΫτʹม׵ͯ͠ฦ͢ TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ
175. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } FYUTPDLFUTPDLFUD
     ৽͍͠4PDLFUΦϒδΣΫτΛ֨ೲ
     
     ৽͍͠4PDLFUΦϒδΣΫτΛ֨ೲ͢ΔͨΊͷม਺TPDLΛએݴ
     TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ
     
     STPDL@T@BDDFQU@OPOCMPDLؔ਺͸
     
     
     ৽͘͠࡞੒ͨ͠ૉͷιέοτΛ
     
     
     4PDLFUΦϒδΣΫτʹม׵ͯ͠ฦ͢
176. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } FYUTPDLFUTPDLFUD TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ
     4PDLFUΦϒδΣΫτͱ઀ଓઌΞυϨεΛද͢"EESJOGPΦϒδΣΫτΛ഑ྻʹͯ͠ฦ͢
     
177. static VALUE sock_accept_nonblock(VALUE sock, VALUE ex) { rb_io_t *fptr; VALUE sock2; union_sockaddr buf; struct sockaddr *addr = &buf.addr; socklen_t len = (socklen_t)sizeof buf; GetOpenFile(sock, fptr); sock2 = rsock_s_accept_nonblock(rb_cSocket, ex, fptr, addr, &len); if (SYMBOL_P(sock2)) return sock2; /* :wait_readable */ return rb_assoc_new(sock2, rsock_io_socket_addrinfo(sock2, &buf.addr, len)); } FYUTPDLFUTPDLFUD TPDL@BDDFQU@OPOCMPDL
     4PDLFU@@BDDFQU@OPOCMPDLͷ࣮ମ
     
     4PDLFU@@BDDFQU@OPOCMPDLͷ಺෦࣮૷͸͜͜·Ͱ
178. 
     
     
     
     
     
     
     
     4PDLFUBDDFQU@MPPQ ࠶ͼ def self.accept_loop(*sockets) # ... loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     4PDLFUBDDFQU@OPOCMPDL
     
     
     ઀ଓΛड͚෇͚Δ
179. def self.accept_loop(*sockets) # ... loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end 4PDLFUBDDFQU@MPPQ
     
     4PDLFUBDDFQU@OPOCMPDLͷฦΓ஋͔Β
     
     
     ม਺TPDLʹΫϥΠΞϯτͱ઀ଓࡁΈͷ
     
     
     ৽͍͠4PDLFUΦϒδΣΫτΛ֨ೲ
     4PDLFUBDDFQU@OPOCMPDL
     
     
     ઀ଓΛड͚෇͚Δ
180. def self.accept_loop(*sockets) # ... loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end Socket.tcp_server_loop(...) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end 4PDLFUBDDFQU@MPPQ
     
     ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛ࢖ͬͯϒϩοΫΛ࣮ߦ
181. 4PDLFUBDDFQU@MPPQ def self.accept_loop(*sockets) # ... loop { readable, _, _ = IO.select(sockets) readable.each {|r| sock, addr = r.accept_nonblock(exception: false) next if sock == :wait_readable yield sock, addr } } end
     
     ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛ࢖ͬͯϒϩοΫΛ࣮ߦ
     a
     ΰʔϧ
      Socket.tcp_server_loop(...) do |sock| message = sock.readpartial 100 sock.write message ensure sock.close end
182. 4PDLFUUDQ@TFSWFS@MPPQͷ͘͠Έ αʔό Socket.tcp_server_loop Λ࣮ߦ
183. 4PDLFUUDQ@TFSWFS@MPPQͷ͘͠Έ αʔό Socket.tcp_server_loop 1. Addrinfo.getaddrinfo Λ࣮ߦ ϗετ໊Λ*1ΞυϨεʹղܾ͢Δ
     ΞυϨε৘ใΛ"EESJOGPΦϒδΣΫτͯ͠ѻ͑ΔΑ͏ʹ͢Δ
184. 4PDLFUUDQ@TFSWFS@MPPQͷ͘͠Έ αʔό Socket.tcp_server_loop 2. Socket.new (Socket#initialize) socket Λ࣮ߦ ϗετ಺ʹιέοτΛ࡞੒͢Δ
     ιέοτΛ4PLDFUΦϒδΣΫτͯ͠ѻ͑ΔΑ͏ʹ͢Δ ➡︎
185. 4PDLFUUDQ@TFSWFS@MPPQͷ͘͠Έ αʔό Socket.tcp_server_loop 3. Socket#bind bind Λ࣮ߦ ࡞੒ͨ͠ιέοτͱղܾͨࣗ͠਎ͷΞυϨεΛඥ͚ͮΔ
     ➡︎
186. 4PDLFUUDQ@TFSWFS@MPPQͷ͘͠Έ αʔό Socket.tcp_server_loop 4. Socket#listen listen Λ࣮ߦ ΞυϨεͱඥ͚ͮͨιέοτͰ઀ଓΛ଴ػ͢Δ
     ➡︎
187. 4PDLFUUDQ@TFSWFS@MPPQͷ͘͠Έ αʔό Socket.tcp_server_loop 5. Socket#accept_nonblock accept Λ࣮ߦ ιέοτʹಧ͍ͨϦΫΤετΛड͚෇͚Δ
     ΫϥΠΞϯτͱ઀ଓࡁΈͷ4PDLFUΦϒδΣΫτΛฦ͢ ➡︎
188. αʔό Socket.tcp_server_loop 6. Λ࣮ߦ ϒϩοΫΛ࣮ߦ 4PDLFUUDQ@TFSWFS@MPPQͷ͘͠Έ
     a
     ΰʔϧ
      ͜ͷ4PDLFUΦϒδΣΫτ͔Β
     ϦΫΤετϝοηʔδΛಡΈࠐΜͩΓ
     ड৴
     ϨεϙϯεϝοηʔδΛॻ͖ࠐΜͩΓ
     ૹ৴
     ͢Δ
189. ·ͱΊ ɹ
     
     
190. ·ͱΊ
     ͨͩͷײ૝ ɹ
     
     ιέοτ͓ͬͯ΋͠Ζ͍
191. ιέοτ͓ͬͯ΋͠Ζ͍ ιέοτϓϩάϥϛϯά
     
     ιέοτΛ࢖༻ͯ͠ωοτϫʔΫ্Ͱσʔλͷૹड৴Λ͢Δ͜ͱ
     
192. ιέοτ͓ͬͯ΋͠Ζ͍ ΫϥΠΞϯτͱαʔόɺͦΕͧΕ͕Ұ࿈ͷखଓ͖ʹԊͬͯ
     ιέοτ"1*Λૢ࡞͢Δ͜ͱʹΑͬͯɺ
     ΫϥΠΞϯτ αʔό ιέοτ ɾ
     ɾ
     ɾ
     ɾ γεςϜίʔϧ
     γεςϜίʔϧ
     γεςϜίʔϧ
     γεςϜίʔϧ ɾ
     ɾ γεςϜίʔϧ
     γεςϜίʔϧ socket connect socket bind listen accept ˞
     5$1ͷ৔߹
193. ιέοτ͓ͬͯ΋͠Ζ͍ ιέοτΛ௨ͯ͡ɺωοτϫʔΫͷ྆୺ʹ͍Δϗετಉ࢜Ͱ
     ίϛϡχέʔγϣϯΛऔΔ͜ͱ͕Ͱ͖Δ ΫϥΠΞϯτ αʔό
     Ϩεϙϯε
     
     ϦΫΤετ
     ɾ
     ɾ
     ɾ
     ɾ γεςϜίʔϧ
     γεςϜίʔϧ
     γεςϜίʔϧ
     γεςϜίʔϧ ɾ
     ɾ γεςϜίʔϧ
     γεςϜίʔϧ socket connect socket bind listen accept ˞
     5$1ͷ৔߹
194. ιέοτ͓ͬͯ΋͠Ζ͍ ͜ͷͱ͖ιέοτ͸
     Θͨͨͪ͠ϓϩάϥϚʔʹͱͬͯ
     ωοτϫʔΫͷੈքΛ։͍ͯ͘ΕΔɺ
     ͦͯࣗ͠෼ͨͪͰϓϩάϥϛϯάͰ͖Δ
     Ұ൪਎ۙͳଘࡏ
195. ΋͏ͻͱͭ ɹ
     
     
196. ΋͏ͻͱͭ ɹ
     
     3VCZ͓ͬͯ΋͠Ζ͍
197. 4PDLFUUDQ
     
     4PDLFUUDQ@TFSWFS@MPPQͷେ෦෼͸3VCZ࣮૷
     3VCZ͓ͬͯ΋͠Ζ͍ Socket.tcp_server_loop Socket.tcp_server_sockets Addrinfo.foreach Addrinfo.getaddrinfo Addrinfo#listen Socket.new Socket#bind Socket#listen Socket.accept_loop Socket#accept_nonblock Socket.tcp Socket.tcp_without_fast_fallback Addrinfo.foreach Addrinfo.getaddrinfo Addrinfo.connect Addrinfo.connect_internal Socket.new Socket#cennect ͷίʔϧελοΫ ͷίʔϧελοΫ
198. 4PDLFUUDQ
     
     4PDLFUUDQ@TFSWFS@MPPQͷେ෦෼͸3VCZ࣮૷
     
     ͜ΕΒͷ࣮૷ࣗମ͕3VCZΛ࢖ͬͨιέοτϓϩάϥϛϯά 3VCZ͓ͬͯ΋͠Ζ͍ Socket.tcp_server_loop Socket.tcp_server_sockets Addrinfo.foreach Addrinfo.getaddrinfo Addrinfo#listen Socket.new Socket#bind Socket#listen Socket.accept_loop Socket#accept_nonblock Socket.tcp Socket.tcp_without_fast_fallback Addrinfo.foreach Addrinfo.getaddrinfo Addrinfo.connect Addrinfo.connect_internal Socket.new Socket#cennect ͷίʔϧελοΫ ͷίʔϧελοΫ
199. ͜ͷͱ͖ιέοτΛ௚઀ૢ࡞͢Δ෦෼͸ɺ࣮ࡍ͸
     3VCZͷ಺෦Ͱ͸$Ͱ࣮૷͞Ε͍ͯΔ Socket.tcp_server_loop Socket.tcp_server_sockets Addrinfo.foreach Addrinfo.getaddrinfo Addrinfo#listen Socket.new Socket#bind Socket#listen Socket.accept_loop Socket#accept_nonblock Socket.tcp Socket.tcp_without_fast_fallback Addrinfo.foreach Addrinfo.getaddrinfo Addrinfo.connect Addrinfo.connect_internal Socket.new Socket#cennect 3VCZ͓ͬͯ΋͠Ζ͍ ͷίʔϧελοΫ $࣮૷ $࣮૷ $࣮૷ $࣮૷ $࣮૷ $࣮૷ ͷίʔϧελοΫ
200. ͦΕΒ͸3VCZͷίʔυͷதͰ͸
     4PDLFUΦϒδΣΫτ΁ͷϝιουݺͼग़͠ͱͯ͠දݱ͞ΕΔ
     3VCZ͓ͬͯ΋͠Ζ͍ Socket.tcp Socket.tcp_without_fast_fallback Addrinfo.foreach Addrinfo.getaddrinfo Addrinfo.connect Addrinfo.connect_internal Socket.new Socket#cennect ͷίʔϧελοΫ $࣮૷ $࣮૷ Socket.tcp_server_loop Socket.tcp_server_sockets Addrinfo.foreach Addrinfo.getaddrinfo Addrinfo#listen Socket.new Socket#bind Socket#listen Socket.accept_loop Socket#accept_nonblock $࣮૷ $࣮૷ $࣮૷ $࣮૷ ͷίʔϧελοΫ
201. ೉͍͜͠ͱ͸͢΂ͯ3VCZࣗ਎ͷதʹӅ͞Ε͍ͯΔ
     Θͨͨͪ͠͸ιέοτΛ
     ;ͭ͏ͷ3VCZΦϒδΣΫτͱͯ͠ѻ͏͜ͱ͕Ͱ͖Δ 3VCZ͓ͬͯ΋͠Ζ͍ Socket.new socket Socket#connect connect Socket#bind bind Socket#listen listen Socket#accept_nonblock accept ɾ
     ɾ
     ɾ
     ɾ
     ɾ ➡︎
     ➡︎
     ➡︎
     ➡︎
     ➡︎ γεςϜίʔϧ
     γεςϜίʔϧ
     γεςϜίʔϧ
     γεςϜίʔϧ
     γεςϜίʔϧ
202. 3VCZ͓ͬͯ΋͠Ζ͍ ͜Εͬͯཁ͢Δʹ;ͭ͏ͷ3VCZϓϩάϥϛϯά
     
203. ͜Εͬͯཁ͢Δʹ;ͭ͏ͷ3VCZϓϩάϥϛϯά
     3VCZ͓ͬͯ΋͠Ζ͍ IUUQTUBOPTIJJSVCZHJUIVCJP ͦͯ͠3VCZϓϩάϥϛϯά͸ͨͷ͍͠
204. 3VCZΛ࢖ͬͯ3VCZͷΑ͏ʹ
     ιέοτΛѻ͑͹
     ιέοτϓϩάϥϛϯά͸
     3VCZϓϩάϥϛϯάͱಉ͡Α͏ʹ
     ͨͷ͍͠
205. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
     
     ࢀߟਤॻ
     
     
     ɾ83JDIBSE
     4UFWFOT
     ࣰా
     ཅҰ
     ຋༁
     ɹʮ6/*9ωοτϫʔΫϓϩάϥϛϯά
     7PM
     ୈ൛
     
     
     ɹ
     ωοτϫʔΫ"1*
     ιέοτͱ95*ʯ ͨͷ͍͠4PDLFUͷ͘͠Έ
     Socket Under a Microscope