実録 Let's build a simple Rack compatible server

Transcript

1. ࣮࿥
   -FU`TCVJMEBTJNQMF
   3BDLDPNQBUJCMFTFSWFS⚡⚡⚡
   ԘҪඒ࡙!DPF@
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   େߐށ3VCZձٞ
   

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2. ࣗݾ঺հ
   ԘҪඒ࡙ ͓͍͠
   !DPF@
   
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   "TBLVTBSCʹ௨͍࢝ΊͯૣҰ೥൒
   ࠷ۙ8FCαʔόʔΛ࡞Γ·ͨ͠
   

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3. ࣗݾ঺հ
   ԘҪඒ࡙ ͓͍͠
   !DPF@
   
   8FCϓϩάϥϚ
   "TBLVTBSCɺ5BNBSCɺ'VLVPLBSCʢ࿦ཧʣʹ͍·͢
   "TBLVTBSCʹ௨͍࢝ΊͯૣҰ೥൒
   ࠷ۙ8FCαʔόʔΛ࡞Γ·ͨ͠
   ‐ࠓ೔ͷ͓࿩
   

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4. 3VCZ$POG/BTIWJMMF
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5. ग़యɿIUUQTOPUJTUFTUIFSD(V(+MFUTCVJMEBTJNQMFIUUQTFSWFSXJUISVCZ
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6. ‎JHBJHB͞Μ!JHBJHB‎
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7. ‎͏ͮΒ͞Μ!VE[VSB 'VLVPLBSC
   ‎
   ‎Θͨ͠ !DPF@
   
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   !DPF@
   

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8. ͱ͍͏͜ͱͰɺ
   ൃදࢿྉΛࢀߟʹ
   γϯϓϧͳ)551αʔόʔΛ
   ࡞ͬͯΈ·ͨ͠
   

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9. ग़དྷ্͕ͬͨͷ͕ͪ͜Β
   1 require ‘socket’
   
   2
   
   3 server = TCPServer.new(‘localhost’, 5000)
   
   4
   
   5 loop do
   
   6 client = server.accept
   
   7 request = client.readpartial(2048)
   
   8
   
   9 puts request
   
   10
   
   11 client.puts response <<~MESSAGE
   
   12 HTTP/1.1 200 OK\r\n
   
   13 Content-Type: text/plain\r\n
   
   14 \r\n
   
   15 Hello!\r\n
   
   16 MESSAGE
   
   17 end
   TPDLFUϥΠϒϥϦΛSFRVJSF
   

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10. 1 require ‘socket’
    
    2
    
    3 server = TCPServer.new(‘localhost’, 5000)
    
    4
    
    5 loop do
    
    6 client = server.accept
    
    7 request = client.readpartial(2048)
    
    8
    
    9 puts request
    
    10
    
    11 client.puts response <<~MESSAGE
    
    12 HTTP/1.1 200 OK\r\n
    
    13 Content-Type: text/plain\r\n
    
    14 \r\n
    
    15 Hello!\r\n
    
    16 MESSAGE
    
    17 end
    αʔόʔ઀ଓΛPQFO
    ΫϥΠΞϯτ͔Βͷ઀ଓཁٻΛड͚෇͚Δ
    ϦΫΤετϝοηʔδΛಡΈࠐΉ
    ϦΫΤετϝοηʔδΛαʔόʔଆʹग़ྗ
    ద౰ͳϨεϙϯεϝοηʔδ
    ϨεϙϯεϝοηʔδΛΫϥΠΞϯτଆʹग़ྗ
    ग़དྷ্͕ͬͨͷ͕ͪ͜Β
    

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11. DVSMMPDBMIPTU
    ࡞ͬͨαʔόʔͷϗετͱϙʔτ൪߸
    

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12. ಈ͖·ͨ͠
    αʔόʔଆ
    ΫϥΠΞϯτଆ
    ϦΫΤετϝοηʔδ͕
    ग़ྗ͞Ε͍ͯΔ
    ϨεϙϯεϘσΟ͕
    ग़ྗ͞Ε͍ͯΔ
    

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13. ͔͠͠
    

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14. ಈతͳΞϓϦέʔγϣϯʹ͸ରԠ͍ͯ͠ͳ͍⚠
    1 require ‘socket’
    
    2
    
    3 server = TCPServer.new(‘localhost’, 5000)
    
    4
    
    5 loop do
    
    6 client = server.accept
    
    7 request = client.readpartial(2048)
    
    8
    
    9 puts request
    
    10
    
    11 client.puts response <<~MESSAGE
    
    12 HTTP/1.1 200 OK\r\n
    
    13 Content-Type: text/plain\r\n
    
    14 \r\n
    
    15 Hello!\r\n
    
    16 MESSAGE
    
    17 end
    ͦ΋ͦ΋
    ΞϓϦέʔγϣϯ͕
    ଘࡏ͠ͳ͍
    ΞΫηε͢Δͨͼɺຖճ
    ಉ͡Ϩεϙϯεϝοηʔδ͕
    ग़ྗ͞ΕΔ
    

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15. ͔ͤͬ͘ͳͷͰ
    3BDLDPNQBUJCMFʹ͍ͨ͠
    

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16. γϯϓϧͰ3BDLDPNQBUJCMFͳ
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    ͱ͍͏໊લͷαʔόʔΛ
    ࡞ͬͯΈ͍ͨͱࢥ͍·͢
    

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17. 1 require ‘rack’
    
    2 require_relative ‘../server/simple_rack_compatible_server’
    
    3
    
    4 class App
    
    5 def call(env)
    
    6 [
    
    7 200,
    
    8 { ‘Content-Type’ => ‘text/html’ },
    
    9 [“Hello.This app is running on .…”]
    
    10 ]
    
    11 end
    
    12 end
    
    13
    
    14 run App.new
    
    ݕূ༻ͷ3BDLΞϓϦέʔγϣϯ͕ͪ͜Β
    app/sample.ru
    

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18. 1 require ‘rack’
    
    2 require_relative ‘../server/simple_rack_compatible_server’
    
    3
    
    4 class App
    
    5 def call(env)
    
    6 [
    
    7 200,
    
    8 { ‘Content-Type’ => ‘text/html’ },
    
    9 [“Hello.This app is running on .…”]
    
    10 ]
    
    11 end
    
    12 end
    
    13
    
    14 run App.new
    
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    ݕূ༻ͷ3BDLΞϓϦέʔγϣϯ͕ͪ͜Β
    app/sample.ru
    ࣮ߦ͢Δͱʜ
    

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19. 3BDLΞϓϦέʔγϣϯ͕ىಈ͢ΔྲྀΕ
    SBDLVQίϚϯυΛ࣮ߦ
    ϋϯυϥʔΛىಈ
    ϋϯυϥʔʹαʔόʔΛొ࿥
    αʔόʔຊମ͕ॲཧΛ։࢝
    αʔόʔΛىಈ
    3BDLຊମͱ
    αʔόʔຊମΛ઀ଓ
    αʔόʔ͕
    ΞϓϦέʔγϣϯΛ࣮ߦ
    ىಈ։࢝
    3BDLΞϓϦέʔγϣϯΛ࣮ߦ
    

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20. 3BDLΞϓϦέʔγϣϯ͕ىಈ͢ΔྲྀΕ
    SBDLVQίϚϯυΛ࣮ߦ
    ϋϯυϥʔΛىಈ
    ϋϯυϥʔʹαʔόʔΛొ࿥
    αʔόʔຊମ͕ॲཧΛ։࢝
    αʔόʔΛىಈ
    3BDLΞϓϦέʔγϣϯΛ࣮ߦ
    3BDLຊମͷ
    )BOEMFSϞδϡʔϧΛ࢖ͬͨ
    αʔόʔຊମͷॲཧ
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21. 3BDLDPNQBUJCMFͳαʔόʔͷػೳཁ݅
    3BDLΞϓϦέʔγϣϯ͕ىಈ͢ΔྲྀΕΛ౿·͑ͯɺ
    αʔόʔʹඞཁͳػೳΛߟ͑Δ
    ᶃϋϯυϥʔ
    3BDL)BOEMFS4JNQMF3BDL$PNQBUJCMF4FSWFS
    
    ⚡3BDLຊମͷ)BOEMFSϞδϡʔϧʹαʔόʔΛొ࿥͢Δ
    ⚡αʔόʔΛىಈ͢Δ
    ᶄαʔόʔຊମ
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    ⚡ϦΫΤετΛड͚Δ
    ⚡ΞϓϦέʔγϣϯΛ࣮ߦ͢Δ
    ⚡ϨεϙϯεΛฦ͢
    

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22. 1 require ‘rack/handler’
    
    2
    
    3 module Rack
    
    4 module Handler
    
    5 class SimpleRackCompatibleServer
    
    6 def self.run(app, options = {})
    
    7 environment = ENV[‘RACK_ENV’] || ‘development’
    
    8 default_host = environment == ‘development’ ? ‘localhost’ : ‘0.0.0.0’
    
    9
    
    10 host = options.delete(:Host) || default_host
    
    11 port = options.delete(:Port) || 9292
    
    12 args = [host, port, app]
    
    13 ::SimpleRackCompatibleServer::Server.new(*args).start
    
    14 end
    
    15 end
    
    16
    
    17 register :simple_rack_compatible_server, SimpleRackCompatibleServer
    
    18 end
    
    19 end
    ࢀߟɿIUUQTHJUIVCDPNNBDPVSOPZFSUIJO
    rack/handler/simple_rack_compatible_server.rb
    ϋϯυϥʔΛ࣮૷ ࢀߟ5IJO
    
    3BDL)BOEMFSϞδϡʔϧΛSFRVJSF
    

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23. 1 require ‘rack/handler’
    
    2
    
    3 module Rack
    
    4 module Handler
    
    5 class SimpleRackCompatibleServer
    
    6 def self.run(app, options = {})
    
    7 environment = ENV[‘RACK_ENV’] || ‘development’
    
    8 default_host = environment == ‘development’ ? ‘localhost’ : ‘0.0.0.0’
    
    9
    
    10 host = options.delete(:Host) || default_host
    
    11 port = options.delete(:Port) || 9292
    
    12 args = [host, port, app]
    
    13 ::SimpleRackCompatibleServer::Server.new(*args).start
    
    14 end
    
    15 end
    
    16
    
    17 register :simple_rack_compatible_server, SimpleRackCompatibleServer
    
    18 end
    
    19 end
    rack/handler/simple_rack_compatible_server.rb
    3BDL)BOEMFSϞδϡʔϧʹαʔόʔΛొ࿥͢Δ
    ࢀߟɿIUUQTHJUIVCDPNNBDPVSOPZFSUIJO
    ϋϯυϥʔΛ࣮૷ ࢀߟ5IJO
    
    

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24. 1 require ‘rack/handler’
    
    2
    
    3 module Rack
    
    4 module Handler
    
    5 class SimpleRackCompatibleServer
    
    6 def self.run(app, options = {})
    
    7 environment = ENV[‘RACK_ENV’] || ‘development’
    
    8 default_host = environment == ‘development’ ? ‘localhost’ : ‘0.0.0.0’
    
    9
    
    10 host = options.delete(:Host) || default_host
    
    11 port = options.delete(:Port) || 9292
    
    12 args = [host, port, app]
    
    13 ::SimpleRackCompatibleServer::Server.new(*args).start
    
    14 end
    
    15 end
    
    16
    
    17 register :simple_rack_compatible_server, SimpleRackCompatibleServer
    
    18 end
    
    19 end
    rack/handler/simple_rack_compatible_server.rb
    ࢀߟɿIUUQTHJUIVCDPNNBDPVSOPZFSUIJO
    αʔόʔΛىಈ͢Δϝιου
    ϋϯυϥʔΛ࣮૷ ࢀߟ5IJO
    
    

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25. 1 require ‘rack/handler’
    
    2
    
    3 module Rack
    
    4 module Handler
    
    5 class SimpleRackCompatibleServer
    
    6 def self.run(app, options = {})
    
    7 environment = ENV[‘RACK_ENV’] || ‘development’
    
    8 default_host = environment == ‘development’ ? ‘localhost’ : ‘0.0.0.0’
    
    9
    
    10 host = options.delete(:Host) || default_host
    
    11 port = options.delete(:Port) || 9292
    
    12
    
    13
    
    14 end
    
    15 end
    
    16
    
    17
    
    18 end
    
    19 end
    rack/handler/simple_rack_compatible_server.rb
    ࣮ߦ؀ڥ͔Βϗετͱϙʔτ൪߸Λઃఆ͢Δ
    ˞σϑΥϧτͰMPDBMIPTUʹ઀ଓ
    
    ࢀߟɿIUUQTHJUIVCDPNNBDPVSOPZFSUIJO
    ϋϯυϥʔΛ࣮૷ ࢀߟ5IJO
    
    

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26. 1 require ‘rack/handler’
    
    2
    
    3 module Rack
    
    4 module Handler
    
    5 class SimpleRackCompatibleServer
    
    6 def self.run(app, options = {})
    
    7 environment = ENV[‘RACK_ENV’] || ‘development’
    
    8 default_host = environment == ‘development’ ? ‘localhost’ : ‘0.0.0.0’
    
    9
    
    10 host = options.delete(:Host) || default_host
    
    11 port = options.delete(:Port) || 9292
    
    12 args = [host, port, app]
    
    13
    
    14 end
    
    15 end
    
    16
    
    17
    
    18 end
    
    19 end
    rack/handler/simple_rack_compatible_server.rb
    αʔόʔʹ౉͢Ҿ਺Λ༻ҙ͢Δ
    ⚡ϗετ
    ⚡ϙʔτ൪߸
    ⚡3BDLΞϓϦέʔγϣϯຊମ
    ࢀߟɿIUUQTHJUIVCDPNNBDPVSOPZFSUIJO
    ϋϯυϥʔΛ࣮૷ ࢀߟ5IJO
    
    

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27. 1 require ‘rack/handler’
    
    2
    
    3 module Rack
    
    4 module Handler
    
    5 class SimpleRackCompatibleServer
    
    6 def self.run(app, options = {})
    
    7 environment = ENV[‘RACK_ENV’] || ‘development’
    
    8 default_host = environment == ‘development’ ? ‘localhost’ : ‘0.0.0.0’
    
    9
    
    10 host = options.delete(:Host) || default_host
    
    11 port = options.delete(:Port) || 9292
    
    12 args = [host, port, app]
    
    13 ::SimpleRackCompatibleServer::Server.new(*args).start
    
    14 end
    
    15 end
    
    16
    
    17
    
    18 end
    
    19 end
    rack/handler/simple_rack_compatible_server.rb
    αʔόʔ 4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFS
    Λ
    ΠϯελϯεԽ͠ OFX
    ɺىಈ͢Δ TUBSU
    
    ࢀߟɿIUUQTHJUIVCDPNNBDPVSOPZFSUIJO
    ϋϯυϥʔΛ࣮૷ ࢀߟ5IJO
    
    

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28. 1 require ‘socket’
    
    2
    
    3 module SimpleRackCompatibleServer
    
    4 class Server
    
    5 def initialize(*args)
    
    6 @host, @port, @app = args
    
    7 end
    
    8
    
    9 def start
    
    26 end
    
    27 end
    
    28 end
    simple_rack_compatible_server.rb
    αʔόʔΛ࣮૷શମ૾
    ʜ
    ϋϯυϥʔ͔ΒҾ͖ܧ͍ͩ
    ⚡ϗετ
    ⚡ϙʔτ൪߸
    ⚡3BDLΞϓϦέʔγϣϯຊମ
    ͰΠϯελϯεΛॳظԽ͢Δ
    ݩʑͷ)551αʔόʔͷॲཧʹ
    ͭͷมߋ఺Λ௥Ճ
    ৄ͘͠͸࣍ͷεϥΠυ
    
    

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29. 9 def start
    
    10 server = TCPServer.new(@host, @port)
    
    11
    
    12 loop do
    
    13 client = server.accept
    
    14 request = client.readpartial(2048)
    
    15
    
    16 @status, @header, @body = @app.call
    
    17
    
    18 puts request
    
    19
    
    20 client.puts <<~MESSAGE
    
    21 #{‘HTTP/1.1 200 OK’ if @status.eql? 200}\r\n
    
    22 #{@header.map { |k, v| [k, v].join(’: ’) }.join(“\r\n”)}\r\n
    
    23 \r\n
    
    24 #{@body}
    
    25 MESSAGE
    
    26 end
    simple_rack_compatible_server.rb
    มߋ఺ᶄ
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    ฦΓ஋Λऔಘ͢Δ
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    ฦΓ஋͔ΒϨεϙϯεϝοηʔδΛੜ੒
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    ϋϯυϥʔ͔Β౉ͨ͠
    ϗετͱϙʔτ൪߸Λઃఆ
    

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30. ͔͠͠
    

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31. 9 def start
    
    10 server = TCPServer.new(@host, @port)
    
    11
    
    12 loop do
    
    13 client = server.accept
    
    14 request = client.readpartial(2048)
    
    15
    
    16 @status, @header, @body = @app.call(???)
    
    17
    
    18 puts request
    
    19
    
    20 client.puts <<~MESSAGE
    
    21 #{‘HTTP/1.1 200 OK’ if @status.eql? 200}\r\n
    
    22 #{@header.map { |k, v| [k, v].join(’: ’) }.join(“\r\n”)}\r\n
    
    23 \r\n
    
    24 #{@body}
    
    25 MESSAGE
    
    26 end
    simple_rack_compatible_server.rb
    Ͳ͏͠Α͏ʜ
    DBMMϝιουʹ౉͢Ҿ਺͕Θ͔Βͳ͍⚠
    ؀ڥม਺ΛϋογϡͷܗͰ
    ೖΕΔඞཁ͕͋Δ
    

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32. 9 def start
    
    10 server = TCPServer.new(@host, @port)
    
    11
    
    12 loop do
    
    13 client = server.accept
    
    14 request = client.readpartial(2048)
    
    15
    
    16 @status, @header, @body = @app.call({ })
    
    17
    
    18 puts request
    
    19
    
    20 client.puts <<~MESSAGE
    
    21 #{‘HTTP/1.1 200 OK’ if @status.eql? 200}\r\n
    
    22 #{@header.map { |k, v| [k, v].join(’: ’) }.join(“\r\n”)}\r\n
    
    23 \r\n
    
    24 #{@body}
    
    25 MESSAGE
    
    26 end
    simple_rack_compatible_server.rb
    Θ͔Βͳ͍ͷͰ
    ۭϋογϡΛ
    ೖΕͯΈ·ͨ͠
    

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33. SBDLVQTTJNQMF@SBDL@DPNQBUJCMF@TFSWFS
    ͱΓ͋͑ͣ
    

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34. ‎ͩΊͰͨ͠
    ר͖ى͜ΔΤϥʔ☠☠☠
    

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35. ೖྗඞਢͷ؀ڥม਺͕͋ΔΒ͍͠
    FOWNJTTJOHSFRVJSFELFZ3&26&45@.&5)0%
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36. rack/lib/rack/lint.rb
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37. rack/lib/rack/lint.rb
    3BDL-JOUΫϥεΛ֬ೝ
    ඞཁͳ؀ڥม਺ʹ͍ͭͯղઆͯ͘͠Ε͍ͯΔʂ
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38. ⚡1"5)@*/'0‎ϦΫΤετ63-ͷύε
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39. ⚡SBDLWFSTJPO‎3BDLͷόʔδϣϯ ഑ྻ
    
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    ⚡SBDLNVMUJQSPDFTT‎ΞϓϦέʔγϣϯ͕ෳ਺ͷϓϩηεʹΑͬͯ
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    Ұ౓͚ͩݺͼग़͞ΕΔ͔Ͳ͏͔
    $(*ϕʔεͷαʔόʔͰͷΈUSVFʹͳΔ
    
    ⚡SBDLVSM@TDIFNF‎63*εΩʔϜ IUUQPSIUUQT
    
    3BDL؀ڥݻ༗ͷ؀ڥม਺
    

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40. 18 def env
    
    19 {
    
    20 ‘PATH_INFO’ => @path || ‘/’,
    
    21 ‘QUERY_STRING’ => @query || ‘’,
    
    22 ‘METHOD’ => @method || ‘GET’,
    
    23 ‘SERVER_NAME’ => ‘simple_rack_compatible_server’,
    
    24 ‘SERVER_PORT’ => @port.to_s,
    
    25 ‘rack.version’ => Rack::VERSION,
    
    26 ‘rack.input’ => StringIO.new(@input || ‘’).set_encoding(‘ASCII_8BIT’),
    
    27 ‘rack.errors’ => $stderr,
    
    28 ‘rack.multiprocess’ => false,
    
    29 ‘rack.multithread’ => false,
    
    30 ‘rack.run_once’ => false,
    
    31 ‘rack.url_scheme’ => @scheme&.downcase&.slice(/http[a-z]*/) || ‘http’
    
    32 }
    
    33 end
    simple_rack_compatible_server.rb
    3BDL-JOUΛࢀߟʹ؀ڥม਺Λઃఆ
    ϦΫΤετ͔Βಈతʹੜ੒ͨ͠؀ڥม਺
    PSσϑΥϧτ஋
    

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41. 35 def start
    
    36 server = TCPServer.new(@host, @port)
    
    37
    
    38 loop do
    
    39 client = server.accept
    
    40
    
    41 request = client.readpartial(2048).split(“\r\n”)
    
    42 @method, path, @scheme = request.first.split
    
    43 @path, @query = path.split(‘?’)
    
    44 @input = request.index(‘’) ? request[request.index(‘’) + 1] : ‘’
    
    45
    
    46 puts “Received request message: #{@method} #{@path} #{@scheme}”
    
    47
    
    48 @status, @header, @body = @app.call(env)
    
    49
    
    50 client.puts <<~MESSAGE
    
    51 # …
    simple_rack_compatible_server.rb
    ϦΫΤετϝοηʔδ͔Β؀ڥม਺Λੜ੒
    ؀ڥม਺Λੜ੒͢ΔίʔυΛ௥Ճ
    

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42. 35 def start
    
    36 server = TCPServer.new(@host, @port)
    
    37
    
    38 loop do
    
    39 client = server.accept
    
    40
    
    41 request = client.readpartial(2048).split(“\r\n”)
    
    42 @method, path, @scheme = request.first.split
    
    43
    
    44
    
    45
    
    46
    
    47
    
    48
    
    49
    
    50
    
    51
    simple_rack_compatible_server.rb
    !NFUIPE‎)551ϝιου
    ˏTDIFNB‎63*εΩʔϜ
    ϦΫΤετϝοηʔδ͔Β؀ڥม਺Λੜ੒
    

    View Slide

43. 35 def start
    
    36 server = TCPServer.new(@host, @port)
    
    37
    
    38 loop do
    
    39 client = server.accept
    
    40
    
    41 request = client.readpartial(2048).split(“\r\n”)
    
    42 @method, path, @scheme = request.first.split
    
    43 @path, @query = path.split(‘?’)
    
    44
    
    45
    
    46
    
    47
    
    48
    
    49
    
    50
    
    51
    simple_rack_compatible_server.rb
    !QBUI‎ϦΫΤετ63-ͷύε
    !RVFSZ‎ΫΤϦจࣈྻ
    ϦΫΤετϝοηʔδ͔Β؀ڥม਺Λੜ੒
    

    View Slide

44. 35 def start
    
    36 server = TCPServer.new(@host, @port)
    
    37
    
    38 loop do
    
    39 client = server.accept
    
    40
    
    41 request = client.readpartial(2048).split(“\r\n”)
    
    42 @method, path, @scheme = request.first.split
    
    43 @path, @query = path.split(‘?’)
    
    44 @input = request.index(‘’) ? request[request.index(‘’) + 1] : ‘’
    
    45
    
    46
    
    47
    
    48
    
    49
    
    50
    
    51
    simple_rack_compatible_server.rb
    !JOQVU‎ೖྗετϦʔϜ ϦΫΤετϘσΟ
    
    ϦΫΤετϝοηʔδ͔Β؀ڥม਺Λੜ੒
    

    View Slide

45. 35 def start
    
    36 server = TCPServer.new(@host, @port)
    
    37
    
    38 loop do
    
    39 client = server.accept
    
    40
    
    41 request = client.readpartial(2048).split(“\r\n”)
    
    42 @method, path, @scheme = request.first.split
    
    43 @path, @query = path.split(‘?’)
    
    44 @input = request.index(‘’) ? request[request.index(‘’) + 1] : ‘’
    
    45
    
    46 puts “Received request message: #{@method} #{@path} #{@scheme}”
    
    47
    
    48
    
    49
    
    50
    
    51
    simple_rack_compatible_server.rb
    ͔ͤͬ͘ͳͷͰϩά
    ΋ग़ྗ
    ϦΫΤετϝοηʔδ͔Β؀ڥม਺Λੜ੒
    

    View Slide

46. SBDLVQTTJNQMF@SBDL@DPNQBUJCMF@TFSWFS
    ͋ΒͨΊͯ
    

    View Slide

47. ‎ಈ͖·ͨ͠
    3FDFJWFESFRVFTUNFTTBHF(&5)551
    3BDL-JOU-JOU&SSPSΤϥʔ͕ফ͑ͯ
    ϩά͕ग़ྗ͞Ε͍ͯΔʂ
    λʔϛφϧʹͯ
    

    View Slide

48. ϒϥ΢βͷݕূπʔϧʹͯ
    3BDLΞϓϦέʔγϣϯ͔Βऔಘͨ͠
    εςʔλείʔυͱϔομΛ
    ΫϥΠΞϯτଆʹ౉͢͜ͱ͕Ͱ͖͍ͯΔʂ
    ϔομ
    $POUFOU5ZQFUFYUIUNM
    
    εςʔλείʔυ
    
    
    

    View Slide

49. ϨεϙϯεϘσΟ͸ʜ
    

    View Slide

50. ϨεϙϯεϘσΟ͸ʜ
    
    

    View Slide

51. Կ͔͕͓͔͍͠
    ཧ૝
    ݱ࣮
    SBDLCPEZQSPYZ
    ϨεϙϯεϘσΟΛಡΈࠐΜͰ
    %0.͕ੜ੒͞ΕΔ
    

    View Slide

52. 35 def start
    
    36 server = TCPServer.new(@host, @port)
    
    37
    
    38 loop do
    
    …
    
    47
    
    48 @status, @header, @body = @app.call(env)
    
    49
    
    50 client.puts <<~MESSAGE
    
    51 #{‘HTTP/1.1 200 OK’ if @status.eql? 200}\r\n
    
    52 #{@header.map { |k, v| [k, v].join(’: ’) }.join(“\r\n”)}\r\n
    
    53 \r\n
    
    54 #{@body}
    
    55 MESSAGE
    
    56 end
    
    57 end
    simple_rack_compatible_server.rb
    Ϩεϙϯεϝοηʔδ͸Ͳ͏ͳ͍ͬͯΔʁ
    ཧ૝ͷϨεϙϯεϘσΟ͸
    [“Hello.This app is …”]
    3BDLΞϓϦέʔγϣϯΛ࣮ߦͯ͠ฦΓ஋Λऔಘ
    ‎<εςʔλείʔυ \ϔομ^ <ϘσΟ>>
    

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53. !CPEZͷத਎͸Ͳ͏ͳ͍ͬͯΔʁ
    JSC 4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSYʜ
    QQ!CPEZ
    3BDL#PEZ1SPYZYʜ
    !CMPDL
    1SPDYʜ!ʜSBDLMJCSBDLDPNNPO@MPHHFSSC
    !CPEZ
    3BDL-JOUYʜ
    !BQQ
    3BDL5FNQpMF3FBQFSYʜ!BQQ"QQYʜ
    !CPEZ
    3BDL#PEZ1SPYZYʜ
    !CMPDL
    1SPDYʜ!ʜSBDLMJCSBDLUFNQpMF@SFBQFSSC
    !CPEZ
    
    !DMPTFEGBMTF
    

    View Slide

54. !CPEZͷத਎͸Ͳ͏ͳ͍ͬͯΔʁ
    JSC 4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSYʜ
    QQ!CPEZ
    3BDL#PEZ1SPYZYʜ
    !CMPDL
    1SPDYʜ!ʜSBDLMJCSBDLDPNNPO@MPHHFSSC
    !CPEZ
    3BDL-JOUYʜ
    !BQQ
    3BDL5FNQpMF3FBQFSYʜ!BQQ"QQYʜ
    !CPEZ
    3BDL#PEZ1SPYZYʜ
    !CMPDL
    1SPDYʜ!ʜSBDLMJCSBDLUFNQpMF@SFBQFSSC
    !CPEZ
    
    !DMPTFEGBMTF
    3BDL#PEZ1SPYZͷΠϯελϯεʂ
    

    View Slide

55. JSC 4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSYʜ
    QQ!CPEZ
    3BDL#PEZ1SPYZYʜ
    !CMPDL
    1SPDYʜ!ʜSBDLMJCSBDLDPNNPO@MPHHFSSC
    !CPEZ
    3BDL-JOUYʜ
    !BQQ
    3BDL5FNQpMF3FBQFSYʜ!BQQ"QQYʜ
    !CPEZ
    3BDL#PEZ1SPYZYʜ
    !CMPDL
    1SPDYʜ!ʜSBDLMJCSBDLUFNQpMF@SFBQFSSC
    !CPEZ
    
    !DMPTFEGBMTF
    ͋Δ औΓग़͠ํ͕Θ͔Βͳ͍ʜ
    
    !CPEZͷத਎͸Ͳ͏ͳ͍ͬͯΔʁ
    

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56. !CPEZΛDBMMͯ͠Έ·ͨ͠
    JSC 4JNQMF3BDL$PNQBUJCMF4FSWFSTFSWʜ
    QQ!CPEZDBMM FOW
    
    <
    \$POUFOU5ZQFUFYUIUNM^
    3BDL-JOUYʜ
    !BQQ
    3BDL5FNQpMF3FBQFSYʜ!BQQ"QQYʜ
    !CPEZ
    3BDL#PEZ1SPYZYʜ
    !CMPDL
    1SPDYʜ!ʜSBDLMJCSBDLUFNQpMF@SFBQFSSC
    !CPEZ
    <EJWI)FMMPIQ5IJTBQQJTʜQEJW>
    !DMPTFEGBMTF
    !DPOUFOU@MFOHUIOJM
    !IFBE@SFRVFTUGBMTF>
    

    View Slide

57. !CPEZΛDBMMͯ͠Έ·ͨ͠
    JSC 4JNQMF3BDL$PNQBUJCMF4FSWFSTFSWFʜ
    QQ!CPEZDBMM FOW
    
    <
    \$POUFOU5ZQFUFYUIUNM^
    3BDL-JOUYʜ
    !BQQ
    3BDL5FNQpMF3FBQFSYʜ!BQQ"QQYʜ
    !CPEZ
    3BDL#PEZ1SPYZYʜ
    !CMPDL
    1SPDYʜ!ʜSBDLMJCSBDLUFNQpMF@SFBQFSSC
    !CPEZ
    
    !DMPTFEGBMTF
    !DPOUFOU@MFOHUIOJM
    !IFBE@SFRVFTUGBMTF>
    ԕ͍ʜ
    ϨεϙϯεϘσΟͦͷ΋ͷ͕
    औಘͰ͖ΔΑ͏ʹͳΔ·Ͱ
    ԆʑDBMM͠ଓ͚Δ͔͠ͳ͍ʜʁʁ
    ϘσΟ 3BDL-JOUͷΠϯελϯε
    
    

    View Slide

58. ߴڮ͞Μ͔Βͷώϯτ
    DBMMϝιουͷฦ͢ཁૉ഑ྻͷͭ໨͸CPEZͰɺ
    CPEZ͸FBDIϝιουͱ͔UP@QBUIϝιουͱ͔Λୟ͚Δ
    ΦϒδΣΫτͰ͔͠ͳ͘
    

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59. ʜFBDIϝιουʁ
    ߴڮ͞Μ͔Βͷώϯτ
    DBMMϝιουͷฦ͢ཁૉ഑ྻͷͭ໨͸CPEZͰɺ
    CPEZ͸FBDIϝιουͱ͔UP@QBUIϝιουͱ͔Λୟ͚Δ
    ΦϒδΣΫτͰ͔͠ͳ͘
    

    View Slide

60. 3BDL#PCZ1SPYZFBDI
    3BDL#PCZ1SPYZ͸FBDIϝιουΛ࣋ͭ
    ࢖͑ΔͷͰ͸ʁ
    

    View Slide

61. 1 require ‘socket’
    
    2
    
    3 module SimpleRackCompatibleServer
    
    4 class Server
    
    69 def body
    
    70 res_body = []
    
    71 @body.each { |body| res_body << body }
    
    72 res_body.join(“\n”)
    
    73 end
    
    74 end
    
    75 end
    simple_rack_compatible_server.rb
    FBDIΛ࢖ͬͯϨεϙϯεϘσΟΛऔΓग़͢
    …
    !CPEZʹFBDIΛݺͼ഑ྻͱͯ͠୅ೖ͠௚͢
    ࠷ޙʹจࣈྻʹ௚͢
    

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62. 35 def start
    
    
    
    48 @status, @header, @body = @app.call(env)
    
    49
    
    50 client.puts <<~MESSAGE
    
    51 #{‘HTTP/1.1 200 OK’ if @status.eql? 200}\r\n
    
    52 #{@header.map { |k, v| [k, v].join(’: ’) }.join(“\r\n”)}\r\n
    
    53 \r\n
    
    54 #{body}
    
    55 MESSAGE
    
    56 end
    
    57 end
    simple_rack_compatible_server.rb
    ϨεϙϯεϘσΟΛݺͼग़͢
    …
    CPEZϝιουΛݺͿ
    

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63. SBDLVQTTJNQMF@SBDL@DPNQBUJCMF@TFSWFS
    ͋ΒͨΊͯ
    

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64. ಈ͖·ͨ͠
    ϨεϙϯεϘσΟ΋දࣔͰ͖·ͨ͠
    

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65. εςʔλείʔυɺϔομɺϘσΟͷશͯΛ
    ΫϥΠΞϯτଆʹग़ྗͰ͖·ͨ͠ʂ
    ಈ͖·ͨ͠
    εςʔλε‎)5510,
    ϔομ‎$POUFOU5ZQFUFYUIUNM
    ϘσΟ‎EJW
    I)FMMPI
    Q5IJTBQQJTʜQ
    EJW
    

    View Slide

66. ࠷ऴతʹ͜͏ͳΓ·ͨ͠⚡
    

    View Slide

67. 1 require ‘socket’
    
    2
    
    3 module SimpleRackCompatibleServer
    
    4 class Server
    
    5 def initialize(*args)
    
    6 @host, @port, @app = args
    
    7 @method = nil
    
    8 @path = nil
    
    9 @scheme = nil
    
    10 @query = nil
    
    11 @input = nil
    
    12 @status = nil
    
    13 @header = nil
    
    14 @body = nil
    
    15 end
    simple_rack_compatible_server.rb
    4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSJOJUJBMJ[F
    ⚡TPDLFUϥΠϒϥϦΛSFRVJSF
    ⚡ඞཁͳΠϯελϯεม਺ΛॳظԽ
    

    View Slide

68. 18 def env
    
    19 {
    
    20 ‘PATH_INFO’ => @path || ‘/’,
    
    21 ‘QUERY_STRING’ => @query || ‘’,
    
    22 ‘METHOD’ => @method || ‘GET’,
    
    23 ‘SERVER_NAME’ => ‘simple_rack_campatible_server’,
    
    24 ‘SERVER_PORT’ => @port.to_s,
    
    25 ‘rack.version’ => Rack::VERSION,
    
    26 ‘rack.input’ => StringIO.new(@input || ‘’).set_encoding(‘ASCII_8BIT’),
    
    27 ‘rack.errors’ => $stderr,
    
    28 ‘rack.multiprocess’ => false,
    
    29 ‘rack.multithread’ => false,
    
    30 ‘rack.run_once’ => false,
    
    31 ‘rack.url_scheme’ => @scheme&.downcase&.slice(/http[a-z]*/) || ‘http’
    
    32 }
    
    33 end
    simple_rack_compatible_server.rb
    4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSFOW
    ⚡3BDLΞϓϦέʔγϣϯͷ࣮ߦʹඞཁͳ؀ڥม਺Λ༻ҙ
    

    View Slide

69. 35 def start
    
    36 server = TCPServer.new(@host, @port)
    
    37
    
    38 puts <<~MESSAGE
    
    39 #{@app} is running on #{@host}: #{@port}
    
    40 => Use Ctrl-C to stop
    
    41 MESSAGE
    
    42
    
    43 loop do
    
    44 client = server.accept
    
    
    
    
    
    
    
    
    
    60 end
    
    61 end
    simple_rack_compatible_server.rb
    …
    4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSTUBSU
    ⚡ϧʔϓॲཧΛ։࢝͢Δ
    ⚡ΫϥΠΞϯτ͔Βͷ઀ଓཁٻΛड͚෇͚Δ
    ⚡αʔόʔ઀ଓΛ։࢝͢Δ
    ⚡։࢝ϝοηʔδΛग़ྗ͢Δ
    

    View Slide

70. 46 begin
    
    47 request = client.readpartial(2048).split(“\r\n”)
    
    48 @method, path, @scheme = request.first.split
    
    49 @path, @query = path.split(‘?’)
    
    50 @input = request.index(‘’) ? request[request.index(‘’) + 1] : ‘’
    
    51
    
    52 puts “Received request message: #{@method} #{@path} #{@schema}”
    
    53
    
    54
    
    55
    
    56
    
    57
    
    58
    
    59 end
    simple_rack_compatible_server.rb
    4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSTUBSU
    ⚡ϦΫΤετϝοηʔδΛಡΈࠐΉ
    ⚡3BDLΞϓϦέʔγϣϯͷ࣮ߦʹඞཁͳ؀ڥม਺Λੜ੒͢Δ
    ⚡αʔόʔʹϩάΛग़ྗ͢Δ
    

    View Slide

71. 46 begin
    
    47
    
    48
    
    49
    
    50
    
    51
    
    52
    
    53
    
    54 @status, @header, @body = @app.call(env)
    
    55
    
    56 client.puts [status, header, ‘’, body].join(“\r\n”)
    
    57 ensure
    
    58 client.close
    
    59 end
    simple_rack_compatible_server.rb
    4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSTUBSU
    ⚡3BDLΞϓϦέʔγϣϯΛ࣮ߦ͠ɺฦΓ஋Λऔಘ͢Δ
    ⚡ฦΓ஋͔ΒϨεϙϯεϝοηʔδΛੜ੒͠ɺग़ྗ͢Δ
    ⚡ιέοτΛด͡Δ
    

    View Slide

72. 46 begin
    
    47
    
    48
    
    49
    
    50
    
    51
    
    52
    
    53
    
    54
    
    55
    
    56 client.puts [status, header, ‘’, body].join(“\r\n”)
    
    57 ensure
    
    58 client.close
    
    59 end
    simple_rack_compatible_server.rb
    4JNQMF3BDL$PNQBUJCMF4FSWFS4FSWFSTUBSU
    67 def status
    
    68 case @status
    
    69 when 200
    
    70 “#{@schema} 200 OK”
    
    82 def header
    
    83 @header.map { |k, v| [k, v].join(’: ’) }.join(“\r\n”)
    
    84 end
    
    86 def body
    
    87 res_body = []
    
    88 @body.each { |body| res_body << body }
    
    89 res_body.join(“\n”)
    
    90 end
    

    View Slide

73. ͓ർΕ༷Ͱͨ͠✨
    

    View Slide

74. ը૾ɿIUUQTUXJUUFSDPNUFOEFSMPWF
    ग़యɿIUUQTTQFBLFSEFDLDPNUFOEFSMPWFHBPEVOBLPEP
    "BSPO͞Μɹɹɹɹ
    

    View Slide

75. ײ૝
    3BDLΛ࢖ͬͯ
    3BDLDPNQBUJCMFͳ
    8FCαʔόʔΛ࡞Δͷ͸
    ָ
    

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76. ⚡Ұ෦͸Ծ࣮૷ͷ··ͩ͠ɺ
    ·ͩ·ͩߟ͑Δ΂͖͜ͱ͸ͨ͘͞Μ͋Δ
    ೖྗʁฒྻԽʁύϑΥʔϚϯεʁFUD
    
    ⚡΋ͬͱ3BDLͷ͜ͱΛ஌Γ͍ͨʂ
    ⚡օ͞Μ͔Βͷٕज़తࢦఠΛ͓଴͍ͪͯ͠·͢
    IUUQTHJUIVCDPNTIJPJNNTJNQMF@SBDL@DPNQBUJCMF@TFSWFS
    ͱ͸͍͑
    

    View Slide

77. 3BDL͸ָɹ
    

    View Slide

78. 3BDL͸ָ͍͠ʂ
    

    View Slide

79. ͓ΘΓʹ⚡⚡⚡
    

    View Slide

80. ࣗݾ঺հ࠶ͼ
    

    View Slide

81. Ұ೥൒લʹԿ͕͔͋ͬͨ
    օ͞Μ͍֮͑ͯ·͔͢ʜʁ
    

    View Slide

82. ೥݄೔
    େߐށ3VCZձٞ
    ը૾ɿIUUQTSFHJPOBMSVCZLBJHJPSHPFEP
    

    View Slide

83. લճͷେߐށ3VCZձٞͷ௚લʹॳࢀՃ
    "TBLVTBSCͷFTBʹΑΔͱ
    ͦͯͦ͠ͷ৔Ͱେߐށ3VCZձٞʹ
    ਃ͠ࠐΈΛͨ͠هԱ͕ʜ
    
    ୈճ
    ը૾ɿIUUQTBTBLVTBSCFTBJPQPTUT
    

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84. લճͷେߐށ3VCZձٞ
    ը૾ɿIUUQTSFHJPOBMSVCZLBJHJPSHPFEP
    

    View Slide

85. લճͷେߐށ3VCZձٞ
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