Toycol: Define your own application protocol

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$ toycol server 4UBSUVQBTFSWFSUIBUVOEFSTUBOET%VDLQSPUPDPM $ toycol client “quack, quack /posts<3user_id=1” 4FOESFRVFTUNFTTBHFCZ%VDLQSPUPDPMUPUIFTFSWFS FH%VDLQSPUPDPM

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$ toycol server [Toycol] Start built-in server, listening on unix:///tmp/toycol.socket [Toycol] Start proxy server on duck protocol, listening on localhost:9292 => Use Ctrl-C to stop [Toycol] Received message: "quack, quack /posts<3user_id=1” [Toycol] Message has been translated to HTTP request message: "GET /posts? user_id=1 HTTP/1.1\r\nContent-Length: 0\r\n\r\n" [Toycol] Successed to Send HTTP request message to server [Toycol] Received response message from server: HTTP/1.1 200 OK [Toycol] Finished to response to client -PHTPOUIFTFSWFSTJEF

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$ toycol client “quack, quack /posts<3user_id=1” [Toycol] Sent request message: quack, quack /posts<3user_id=1 --- [Toycol] Received response message: HTTP/1.1 200 OK Content-Type: text/html Content-Length: 32 quack quack, I am the No.1 duck -PHTPOUIFDMJFOUTJEF

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ᶄ%F fi OFZPVSQSPUPDPMJOUIF1SPUPDPM fi MF Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else “Raise" end end additional_request_methods "Raise" custom_status_codes( 600 => "SyntaxError...", ) end 6TFS 1SPUPDPM fi MFSVCZMJLF /FYU EF fi OF3VCZMJLFQSPUPDPM JOUIF1SPUPDPM fi MF

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Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else “Raise" end end additional_request_methods "Raise" custom_status_codes( 600 => "SyntaxError...", ) end 6TFS 1SPUPDPM fi MFSVCZMJLF 1BTTUIFQSPUPDPMOBNFBTBOBSHVNFOU BOEBCMPDLGPSEF fi OJOHUIFQSPUPDPM UP5PZDPM1SPUPDPMEF fi OF ᶄ%F fi OFZPVSQSPUPDPMJOUIF1SPUPDPM fi MF

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Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else “Raise" end end additional_request_methods "Raise" custom_status_codes( 600 => "SyntaxError...", ) end 6TFS 1SPUPDPM fi MFSVCZMJLF :PVOFFEUPEF fi OFIPXUPQBSTF UIFSFRVFTUNFTTBHFJOUIFTFCMPDLTPG SFRVFTUQBUISFRVFTUIUUQ@NFUIPE ᶄ%F fi OFZPVSQSPUPDPMJOUIF1SPUPDPM fi MF

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Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else “Raise" end end additional_request_methods "Raise" custom_status_codes( 600 => "SyntaxError...", ) end 6TFS 1SPUPDPM fi MFSVCZMJLF #FTJEFT ZPVDBOEF fi OFZPVSPXOTUBUVTDPEFT CZBEEJUJPOBM@SFRVFTU@NFUIPET BEEOFXSFRVFTUNFUIPETCZ DVTUPN@TUBUVT@DPEFTNFUIPE ᶄ%F fi OFZPVSQSPUPDPMJOUIF1SPUPDPM fi MF

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Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else “Raise" end end additional_request_methods "Raise" custom_status_codes( 600 => "SyntaxError...", ) end 6TFS 1SPUPDPM fi MFSVCZMJLF *OUIJT3VCZMJLFQSPUPDPM *BEEFE3BJTFBTBOFXSFRVFTUNFUIPE BOEEF fi OFEBTBDVTUPNTUBUVTDPEF ᶄ%F fi OFZPVSQSPUPDPMJOUIF1SPUPDPM fi MF

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Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else “Raise" end end additional_request_methods "Raise" custom_status_codes( 600 => "SyntaxError...", ) end 6TFS 1SPUPDPM fi MFSVCZMJLF ᶄ%F fi OFZPVSQSPUPDPMJOUIF1SPUPDPM fi MF *GUIFSFRVFTUNFTTBHFJTTVDDFTTGVMMZQBSTFE UIFSFRVFTUNFUIPEJT(&5 PUIFSXJTFJUJT3BJTF

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ᶅ#VJMEB3BDLDPNQBUJCMFBQQMJDBUJPO require "rack" require "toycol" Toycol::Protocol.use(:rubylike) class App def call(env) case env["REQUEST_METHOD"] when “GET” [200, { "Content-Type" => "text/html" }, [“I love Ruby!”\n”, ”I love RubyKaigi!\n”]] when “Raise” [600, { "Content-Type" => "text/html" }, [“Unexpected request message”]] end end end run App.new 6TFS DPO fi H@SVCZJMLFSV /FYU CVJMEB3BDLDPNQBUJCMFBQQMJDBUJPO UIBUSVOTPO3VCZMJLFQSPUPDPM

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require "rack" require "toycol" Toycol::Protocol.use(:rubylike) class App def call(env) case env["REQUEST_METHOD"] when “GET” [200, { "Content-Type" => "text/html" }, [“I love Ruby!”\n”, ”I love RubyKaigi!\n”]] when “Raise” [600, { "Content-Type" => "text/html" }, [“Unexpected request message”]] end end end run App.new :PVOFFEUPSFRVJSFlUPZDPMz BOEDBMM5PZDPM1SPUPDPMVTFUPTQFDJGZ XIJDIQSPUPDPMZPVXPVMEMJLFUPVTF 6TFS DPO fi H@SVCZJMLFSV ᶅ#VJMEB3BDLDPNQBUJCMFBQQMJDBUJPO

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require "rack" require "toycol" Toycol::Protocol.use(:rubylike) class App def call(env) case env["REQUEST_METHOD"] when “GET” [200, { "Content-Type" => "text/html" }, [“I love Ruby!”\n”, ”I love RubyKaigi!\n”]] when “Raise” [600, { "Content-Type" => "text/html" }, [“Unexpected request message”]] end end end run App.new *OUIJTBQQMJDBUJPO *EF fi OFEUPSFUVSO TUBUVTDPEFGPS(&5SFRVFTU BOETUBUVTDPEFGPS4ZOUBY&SSPSSFRVFTU 6TFS DPO fi H@SVCZJMLFSV ᶅ#VJMEB3BDLDPNQBUJCMFBQQMJDBUJPO

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-FUTTFOEBNFTTBHFUIBUTFFNTUPCF3VCZMJLFTZOUBY $ toycol client “‘/posts’.get” [Toycol] Sent request message: '/posts'.get --- [Toycol] Received response message: HTTP/1.1 200 OK Content-Type: text/html Content-Length: 31 I love Ruby! I love RubyKaigi! 5IJTJT3VCZMJLF JTO`UJU 5IFBQQMJDBUJPOSFUVSOT0, ᶆ3VOUIFTFSWFS4FOEBSFRVFTUNFTTBHF

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-FU`TUSZBOBOPUIFSNFTTBHFUIBUNJHIUNJHIUSBJTFBFSSPS $ toycol client “get(‘/posts’)” [Toycol] Sent request message: get(‘/posts’) --- [Toycol] Received response message: HTTP/1.1 600 SyntaxError Content-Type: text/html Content-Length: 64 Unexpected request message *TJUQBSTFBCMFCZ3VCZMJLFQSPUPDPMʜ 5IFBQQMJDBUJPOSFUVSOT4ZOUBY&SSPS ᶆ3VOUIFTFSWFS4FOEBSFRVFTUNFTTBHF *U`TXPSLJOHDPSSFDUMZ

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3BDL)BOEMFS5PZDPMSVO4UBSUTFSWFST module Rack module Handler class Toycol def self.run(app, _ = {}) @app = app @host ||= ::Toycol::DEFAULT_HOST @port ||= "9292" if (child_pid = fork) ::Toycol::Proxy.new(@host, @port).start Process.waitpid(child_pid) else run_background_server end end end end end MJCSBDLIBOEMFSUPZDPMSC 3BDL)BOEMFS5PZDPMSVO

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module Rack module Handler class Toycol def self.run(app, _ = {}) @app = app @host ||= ::Toycol::DEFAULT_HOST @port ||= "9292" if (child_pid = fork) ::Toycol::Proxy.new(@host, @port).start Process.waitpid(child_pid) else run_background_server end end end end end 4UBSUBQSPYZTFSWFS 4UBSUBCBDLHSPVOETFSWFS MJCSBDLIBOEMFSUPZDPMSC 'PSLUPTUBSUUXPLJOEPGTFSWFST BQSPYZTFSWFSBCBDLHSPVOETFSWFS JOUIJTNFUIPE 3BDL)BOEMFS5PZDPMSVO4UBSUTFSWFST

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3BDL)BOEMFS5PZDPMTFMFDU@CBDLHSPVOE@TFSWFS def self.select_background_server case @prefferd_background_server when “puma” return “puma” if try_require_puma_handler raise LordError, “Puma is not installed in your environment.” when nil try_require_puma_handler ? “puma” : “builtin” else “builtin” rescue LordError Process.kill(:INT, Process.ppid) abort end MJCSBDLIBOEMFSUPZDPMSC "TBCBDLHSPVOETFSWFS VTF1VNBJGJUJTJOTUBMMFE JOZPVSFOWJSPONFOU0SVTFBTFSWFSUIBUJTCVJMUJOUP 5PZDPMJUTFMGJGJUJTOPU

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def start … loop do trap(:INT) { shutdown } @client = @proxy.accept while [email protected]? && [email protected]? begin request = @client.readpartial(CHUNK_SIZE) logger “Received message: #{request.inspect.chomp}” safe_execution! { @protocol.run!(request) } … end end @client.close end end MJCUPZDPMQSPYZSC 5PZDPM1SPYZTUBSU 5PZDPM1SPYZTUBSU3FDFJWF5SBOTMBUF

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def start … loop do trap(:INT) { shutdown } @client = @proxy.accept while [email protected]? && [email protected]? begin request = @client.readpartial(CHUNK_SIZE) logger “Received message: #{request.inspect.chomp}” safe_execution! { @protocol.run!(request) } … end end @client.close end end !QSPYZ5$14FSWFSOFX !IPTU !QPSU MJCUPZDPMQSPYZSC 3FDFJWFBSFRVFTUNFTTBHFGSPNUIFDMJFOU 5PZDPM1SPYZTUBSU3FDFJWF5SBOTMBUF

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def start … loop do trap(:INT) { shutdown } @client = @proxy.accept while [email protected]? && [email protected]? begin request = @client.readpartial(CHUNK_SIZE) logger “Received message: #{request.inspect.chomp}” safe_execution! { @protocol.run!(request) } … end end @client.close end end !QSPUPDPM5PZDPM1SPUPDPM MJCUPZDPMQSPYZSC &YFDVUF5PZDPM1SPUPDPMSVOUPUSBOTMBUF UIFSFRVFTUNFTTBHFJOUP)551GPSNBU 5PZDPM1SPYZTUBSU3FDFJWF5SBOTMBUF

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5PZDPM1SPYZTUBSU$BMMUSBOTGFS@UP@TFSWFS def start … loop do trap(:INT) { shutdown } @client = @proxy.accept while [email protected]? && [email protected]? begin … http_request_message = build_http_request_message … transfer_to_server(http_request_message) end end @client.close end end MJCUPZDPMQSPYZSC $BMM5PZDPM1SPYZUSBOTGFS@UP@TFSWFS UIBUTFOETUIFSFRVFTUNFTTBHFUP UIFCBDLHSPVOETFSWFS

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5PZDPM1SPYZUSBOTGFS@UP@TFSWFS3FRVFTU3FTQPOTF def transfer_to_server UNIXSocket.open(UNIIX_SOCKET_PATH) do |server| server.write request_message server.close_write … response_message = [] response_message << server.readpartial(CHUNK_SIZE) until server.eof? response_message = response_message.join … end end MJCUPZDPMQSPYZSC 5PZDPM1SPYZUSBOTGFS@UP@TFSWFS

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3FUVSOUIFSFTQPOTFNFTTBHFUPUIFDMJFOU 5IFOUIFQSPYZTFSWFSSFUVSOTUIFSFTQPOTFNFTTBHF SFDFJWFEGSPNUIFCBDLHSPVOETFSWFSUPUIFDMJFOU $MJFOU 1SPYZ4FSWFS #BDLHSPVOE4FSWFS "QQMJDBUJPO 3BDL)BOEMFS 1SPUPDPM%F fi OJUJPO

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5PZDPM1SPYZUSBOTGFS@UP@TFSWFS3FUVSOUIFSFTQPOTF def transfer_to_server UNIXSocket.open(UNIIX_SOCKET_PATH) do |server| … response_message = [] response_message << server.readpartial(CHUNK_SIZE) until server.eof? response_message = response_message.join … @client.write response_message @client.close_write logger "Finished to response to client" server.close end end MJCUPZDPMQSPYZSC 3FUVSOTUIFSFTQPOTFNFTTBHFSFDFJWFE GSPNUIFCBDLHSPVOETFSWFSUPUIFDMJFOU

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)PXUPUSBOTMBUFBSFRVFTUNFTTBHF

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5IJTJTIPX5PZDPMXPSLTJOUFSOBMMZGSPNUIFEF fi OJOHPG UIFQSPUPDPMVOUJMUSBOTMBUJOHBSFRVFTUNFTTBHFXJUIJU DMBTT1SPUPDPM $MJFOU 1SPUPDPM%F fi OJUJPO 1SPYZ4FSWFS UPZDPMTFSWFS "QQMJDBUJPO )PXUPUSBOTMBUFBSFRVFTUNFTTBHF

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"HBJO UIFTUBSUJOHQPJOUGPSUIFQSPHSBNFYFDVUJPOJT UPZDPMTFSWFSDPNNBOE DMBTT1SPUPDPM $MJFOU 1SPYZ4FSWFS "QQMJDBUJPO UPZDPMTFSWFS 1SPUPDPM%F fi OJUJPO 4UBSUUIFQSPHSBNXJUIUPZDPMTFSWFS

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4UBSUUIFQSPHSBNXJUIUPZDPMTFSWFS "DUVBMMZ 3BDL4FSWFSTUBSUDBMMT3BDL#VJMEFSMPBE@ fi MF BOE3BDL#VJMEFSOFX@GSPN@TUSJOHUPMPBEUIFBQQMJDBUJPO fi MFCFGPSFDBMMJOH3BDL)BOEMFS5PZDPMSVO 3BDL)BOEMFS5PZDPMSVO 5PZDPM 3BDL UPZDPMTFSWFS 3BDL4FSWFSTUBSU 3BDL#VJMEFSMPBE@ fi MF 3BDL#VJMEFSOFX@GSPN@TUSJOH

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4P UIFQSPHSBNXJMMMPBEUIFBQQMJDBUJPO fi MFCFGPSF TUBSUJOHUIFTFSWFS $MJFOU 1SPYZ4FSWFS "QQMJDBUJPO UPZDPMTFSWFS -PBEUIFBQQMJDBUJPO fi MF DMBTT1SPUPDPM 1SPUPDPM%F fi OJUJPO

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5IFBQQMJDBUJPO3FRVJSFlUPZDPMz require "rack" require "toycol" Toycol::Protocol.use(:rubylike) class App def call(env) case env["REQUEST_METHOD"] when “GET” [200, { "Content-Type" => "text/html" }, [“I love Ruby!”\n”, ”I love RubyKaigi!\n”]] when “OTHER” [600, { "Content-Type" => "text/html" }, [“Sorry, but I'd like you to speak more like a Ruby programmer…”]] end end end run App.new 6TFS DPO fi H@SVCZJMLFSV *OUIFBQQMJDBUJPO fi MF UPZDPMJTSFRVJSFEUPSVO5PZDPM

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NPEVMF5PZDPM-PBE1SPUPDPM fi MFT require " fi leutiils" require “optparse" require “rack" require “scoket” require “stringio” … module Toycol … end Dir["#{FileUtils.pwd}/Protocol fi le*"].sort.each { |f| load f } MJCUPZDPMSC 8IFO5PZDPMJTSFRVJSFE UIJT fi MFOBNFEUPZDPMSCJOUIF5PZDPMHFN XJMMCFMPBEFE

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require " fi leutiils" require “optparse" require “rack" require “scoket” require “stringio” … module Toycol … end Dir["#{FileUtils.pwd}/Protocol fi le*"].sort.each { |f| load f } 5PZDPMMPBET1SPUPDPM fi MFTUIBUBSFQMBDFE JOUIFTBNFEJSFDUPSZBTUIFBQQMJDBUJPO fi MF NPEVMF5PZDPM-PBE1SPUPDPM fi MFT 1SPUPDPM fi MF"DPO fi HVSBUJPO fi MFDPOUBJOJOHQSPUPDPMEF fi OJUJPOT MJCUPZDPMSC

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4P UIF fi STUDPEFTUPCFMPBEFEJTUIFQSPUPDPMEF fi OJUJPO XIFOUIFQSPHSBNJTTUBSUFE $MJFOU 1SPYZ4FSWFS "QQMJDBUJPO UPZDPMTFSWFS -PBE1SPUPDPM fi MFT DMBTT1SPUPDPM 1SPUPDPM%F fi OJUJPO

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1SPUPDPM fi MF4UPSFUIFFOUJSFEF fi OJUJPO Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else "OTHER" end end additional_request_methods "OTHER" custom_status_codes( 600 => "Hmm...", ) end 6TFS 1SPUPDPM fi MFSVCZMJLF 'PSFYBNQMF1SPUPDPM fi MFPG3VCZMJLFQSPUPDPM

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5PZDPM1SPUPDPMEF fi OF4UPSFUIFEF fi OJUJPO NPEVMF5PZDPM DMBTT1SPUPDPM !EF fi OFNFOUT\^ ʜ EFGTFMGEF fi OF QSPUPDPM@OBNFEFGBVMU CMPDL ʜ !EF fi OFNFOUTCMPDL FOE ʜ FOE FOE MJCUPZDPMQSPUPDPMSC "TTJHOBIBTIPCKFDUUPBJOTUBODFWBSJBCMF!EF fi OFNFOUT 4UPSFUIFQSPUPDPMOBNFBTUIFLFZBOEUIFCMPDLEF fi OJOH UIFQSPUPDPMBTUIFWBMVFJOUIJTIBTIPCKFDU

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1SPUPDPM fi MF4UPSFBEFUBJMFEEF fi OJUJPOGPSFBDI Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else "OTHER" end end additional_request_methods "OTHER" custom_status_codes( 600 => "Hmm...", ) end 6TFS 1SPUPDPM fi MFSVCZMJLF &BDIMPHJDTEF fi OFEJOUIFTFCMPDLTJT TUPSFEJOFBDIWBSJBCMFTPG 5PZDPM1SPUPDPMDMBTT

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NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGSFRVFTU !SFRVFTUcc$MBTTOFXEP EFGTFMGQBUI CMPDL !QBUICMPDL FOE EFGTFMGIUUQ@NFUIPE CMPDL !IUUQ@NFUIPECMPDL FOE ʜ FOE FOE ʜ FOE FOE FH5PZDPM1SPUPDPMSFRVFTU4UPSFUIFEF fi OJUJPO MJCUPZDPMQSPUPDPMSC 5IJTJTGPSBTTJHOJOHBOBOPOZNPVTDMBTTUP !SFRVFTUPG5PZDPM1SPUPDPM 5IJTBOPOZNPVTDMBTTJTVTFEUPTUPSFFBDIMPHJDGPS QBSTJOHUIFSFRVFTUNFTTBHFJOJUTPXOJOTUBODFWBSJBCMF

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FH5PZDPM1SPUPDPMSFRVFTU4UPSFUIFEF fi OJUJPO NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGSFRVFTU !SFRVFTUcc$MBTTOFXEP EFGTFMGQBUI CMPDL !QBUICMPDL FOE EFGTFMGIUUQ@NFUIPE CMPDL !IUUQ@NFUIPECMPDL FOE ʜ FOE FOE ʜ FOE FOE MJCUPZDPMQSPUPDPMSC &BDIJOTUBODFWBSJBCMFPGUIJTBOPOZNPVT DMBTTTUPSFTBCMPDLPGMPHJDUPHFU UIFSFRVFTUQBUI )551NFUIPE FUD SFRVFTUQBUIEPcNFTTBHFc /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else "OTHER" end end 6TFS 1SPUPDPM fi MFSVCZMJLF

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FH5PZDPM1SPUPDPMSFRVFTU4UPSFUIFEF fi OJUJPO NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGSFRVFTU !SFRVFTUcc$MBTTOFXEP EFGTFMGQBUI CMPDL !QBUICMPDL FOE EFGTFMGIUUQ@NFUIPE CMPDL !IUUQ@NFUIPECMPDL FOE ʜ FOE FOE ʜ FOE FOE MJCUPZDPMQSPUPDPMSC :PVDBOSFUSJFWFUIFTUPSFEMPHJDTCZFYFDVUJOHDBMMNFUIPE POFBDICMPDLTUPSFEJOUIFTFWBSJBCMFT 5PZDPM1SPUPDPMDMBTTIBTTPNFJOUFSGBDFTUIBU BMMPXTUIFTFUPCFDBMMFEBUBOZUJNF

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FH5PZDPM1SPUPDPMSFRVFTU@QBUI3FUSJFWFUIFEF fi OJUJPO NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGSFRVFTU@QBUI SFRVFTU@QBUISFRVFTUJOTUBODF@WBSJBCMF@HFU l!QBUIz DBMM SFRVFTU@NFTTBHF ʜ SFRVFTU@QBUI FOE FOE FOE MJCUPZDPMQSPUPDPMSC 5IJTJTUIFNFUIPEUPHFUUIFSFRVFTUQBUI GSPNBSFRVFTUNFTTBHFBOE BMPHJDUPQBSTFUIFSFRVFTUNFTTBHF

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FH5PZDPM1SPUPDPMSFRVFTU@QBUI3FUSJFWFUIFEF fi OJUJPO NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGSFRVFTU@QBUI SFRVFTU@QBUISFRVFTUJOTUBODF@WBSJBCMF@HFU l!QBUIz DBMM SFRVFTU@NFTTBHF ʜ SFRVFTU@QBUI FOE FOE FOE MJCUPZDPMQSPUPDPMSC EFGBTTJHO@QBSTFE@BUUSJCVUFT ʜ !QBUI!QSPUPDPMSFRVFTU@QBUI ʜ FOE MJCUPZDPMQSPYZSC 5IFQSPYZTFSWFSVTFTUIJTNFUIPEUPSFUSJFWF UIFSFRVFTUQBUI XIFOUIFQSPYZTFSWFSCVJMET B)551GPSNBUUFESFRVFTUNFTTBHF

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"GUFSUIF1SPUPDPM fi MFIBTCFFOMPBEFE UIFBQQMJDBUJPO TFMFDUTXIJDIQSPUPDPMUPVTF $MJFOU 1SPYZ4FSWFS "QQMJDBUJPO UPZDPMTFSWFS 4FMFDUXIJDIQSPUPDPMUPVTF DMBTT1SPUPDPM 1SPUPDPM%F fi OJUJPO

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"QQMJDBUJPO4FMFDUXIJDIQSPUPDPMUPVTF require "rack" require "toycol" Toycol::Protocol.use(:rubylike) class App def call(env) case env["REQUEST_METHOD"] when “GET” [200, { "Content-Type" => "text/html" }, [“I love Ruby!”\n”, ”I love RubyKaigi!\n”]] when “OTHER” [600, { "Content-Type" => "text/html" }, [“Sorry, but I'd like you to speak more like a Ruby programmer…”]] end end end run App.new DPO fi H@SVCZJMLFSV 1BTTUIFQSPUPDPMOBNFZPVXBOUUPVTFUP 5PZDPM1SPUPDPMVTF

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NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGVTF QSPUPDPM@OBNFEFGBVMU !QSPUPDPM@OBNFQSPUPDPM@OBNF FOE ʜ FOE FOE 5PZDPM1SPUPDPMVTF4UPSFUIFQSPUPDPMOBNF MJCUPZDPMQSPUPDPMSC 5PZDPM1SPUPDPMVTF

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5SBOTMBUFBNFTTBHFXJUIQSPUPDPMUPVTF 'JOBMMZ USBOTMBUFUIFSFRVFTUNFTTBHFVTJOHUIFQSPUPDPM ZPVEF fi OFE $MJFOU 1SPYZ4FSWFS "QQMJDBUJPO UPZDPMTFSWFS DMBTT1SPUPDPM 1SPUPDPM%F fi OJUJPO

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def start … loop do trap(:INT) { shutdown } @client = @proxy.accept while [email protected]? && [email protected]? begin … safe_execution! { @protocol.run!(request) } assign_parsed_attributes! http_request_message = build_http_request_message … end end @client.close end end MJCUPZDPMQSPYZSC 5PZDPM1SPYZTUBSU"QQMZUIFQSPUPDPM 5PZDPM1SPYZTUBSUFYFDVUFT UIFQSPUPDPMUSBOTMBUJPO

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def start … loop do trap(:INT) { shutdown } @client = @proxy.accept while [email protected]? && [email protected]? begin … safe_execution! { @protocol.run!(request) } assign_parsed_attributes! http_request_message = build_http_request_message … end end @client.close end end !QSPUPDPM5PZDPM1SPUPDPM MJCUPZDPMQSPYZSC 5PZDPM1SPYZTUBSU"QQMZUIFQSPUPDPM &YFDVUF5PZDPM1SPUPDPMSVO UIFOUIFQSPUPDPMXJMMCFBQQMJFE UPUIFSFRVFTUNFTTBHF

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NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGSVO NFTTBHF !SFRVFTU@NFTTBHFNFTTBHFDIPNQ SFUVSOVOMFTT CMPDL!EF fi OFNFOUT JOTUBODF@FYFD !SFRVFTU@NFTTBHF CMPDL FOE ʜ FOE FOE 5PZDPM1SPUPDPMSVO"QQMZUIFQSPUPDPM MJCUPZDPMQSPUPDPMSC 5PZDPM1SPUPDPMSVO

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NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGSVO NFTTBHF !SFRVFTU@NFTTBHFNFTTBHFDIPNQ SFUVSOVOMFTT CMPDL!EF fi OFNFOUT JOTUBODF@FYFD !SFRVFTU@NFTTBHF CMPDL FOE ʜ FOE FOE 5PZDPM1SPYZTUBSU"QQMZUIFQSPUPDPM MJCUPZDPMQSPUPDPMSC 'JOEUIFQSPUPDPMEF fi OJUJPO DPSSFTQPOEJOHUP!QSPUPDPM@OBNF JO!EF fi OFNFOUTIBTI

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NPEVMF5PZDPM DMBTT1SPUPDPM ʜ EFGTFMGSVO NFTTBHF !SFRVFTU@NFTTBHFNFTTBHFDIPNQ SFUVSOVOMFTT CMPDL!EF fi OFNFOUT JOTUBODF@FYFD !SFRVFTU@NFTTBHF CMPDL FOE ʜ FOE FOE 5PZDPM1SPYZTUBSU"QQMZUIFQSPUPDPM MJCUPZDPMQSPUPDPMSC &YFDVUFUIJTCMPDLJOJOTUBODF@FYFD 5IFSFRVFTUNFTTBHFQBTTFEBT UIFBSHVNFOUXJMMCFUSBOTMBUFE

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def start … loop do trap(:INT) { shutdown } @client = @proxy.accept while [email protected]? && [email protected]? begin … safe_execution! { @protocol.run!(request) } assign_parsed_attributes! http_request_message = build_http_request_message … end end @client.close end end MJCUPZDPMQSPYZSC 5PZDPM1SPYZTUBSU#VJMEBSFRVFTUNFTTBHF 5IFOFYFDVUF5PZDPM1SPYZBTTJHO@QBSTFE@BUUSJCVUFT BOE5PZDPM1SPYZCVJME@IUUQ@SFRVFTU@NFTTBHFUP CVJMEB)551GPSNBUUFESFRVFTUNFTTBHF

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NPEVMF5PZDPM DMBTT1SPUPDPM … def assign_parsed_attibutes @request_method = @protocol.request_method @path = @protocol.request_path @query = @protocol.query @input = @protocol.input end … end end MJCUPZDPMQSPYZSC 5PZDPM1SPYZBTTJHO@QBSTFE@BUUSJCVUFT#VJMEBSFRVFTUNFTTBHF 5PZDPM1SPYZBTTJHO@QBSTFE@BUUSJCVUFTFYUSBDUT WBMVFTTUPSFEJO5PZDPM1SPUPDPMDMBTT "OEBTTJHOTUIFNUPFBDIJOTUBODFWBSJBCMFT

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NPEVMF5PZDPM DMBTT1SPUPDPM … def build_http_request_message request_message = "#{request_line}#{request_header}\r\n" request_message += @input if @input request_message end … end end MJCUPZDPMQSPYZSC 5PZDPM1SPYZCVJME@IUUQ@SFRVFTU@NFTTBHF#VJMEBSFRVFTUNFTTBHF 5PZDPM1SPYZCVJME@IUUQ@SFRVFTU@NFTTBHFCVJMET B)551GPSNBUUFESFRVFTUNFTTBHF VTJOHUIPTFJOTUBODFWBSJBCMFT

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NPEVMF5PZDPM DMBTT1SPUPDPM … def build_http_request_message request_message = "#{request_line}#{request_header}\r\n" request_message += @input if @input request_message end … end end MJCUPZDPMQSPYZSC 5PZDPM1SPYZCVJME@IUUQ@SFRVFTU@NFTTBHF#VJMEBSFRVFTUNFTTBHF FH 5PZDPM1SPYZCVJME@IUUQ@SFRVFTU@NFTTBHFSFUVSOT BWBMVFMJLF (&5QPTUT)551aSaO$POUFOU-FOHUIaSaOaSaO "#{@request_method} #{request_path} HTTP/1.1\r\n" “#{@path}#{"?#{@query}" if @query && [email protected]?}" "Content-Length: #{@input&.bytesize || 0}\r\n"

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"EWBODFEQSPUPDPMEF fi OJUJPOT

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-FUTDPOTJEFSTPNFNPSF BEWBODFEEF fi OJUJPOTPGQSPUPDPM

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-FU`TDPOTJEFSBHBJO3VCZMJLFQSPUPDPM XFKVTUEF fi OFE 5IJTQSPUPDPMUBLFTB3VCZMJLFTZOUBY SFRVFTUNFTTBHFBTBTUSJOH QBSTFTJU BOEUSBOTMBUFTJUJOUP B)551GPSNBUUFESFRVFTUNFTTBHF

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'PSFYBNQMF JGZPVSFDFJWFBTUSJOH lbQPTUT`HFUz BTBSFRVFTUNFTTBHF XJUIUIF3VCZMJLFQSPUPDPMʜ

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3VCZMJLFQSPUPDPM1BSTJOHUIFTUSJOHlbQPTUT`HFUz Toycol::Protocol.de fi ne(:rubylike) do request.path do |message| /['"](?.+)['"]/.match(message)[:path] end request.http_method do |message| case /\.(?[A-z]+)/.match(message)&.captures&. fi rst when "get" then "GET" else "OTHER" end end … end 6TFS 1SPUPDPM fi MFSVCZMJLF 1BSTFUIFTUSJOHlbQPTUTHFUzUPHFUBSFRVFTUQBUI BOESFRVFTUNFUIPE TUPSFUIFNJO5PZDPM1SPUPDPM DMBTT BOEUSBOTMBUFUIFNUP)551GPSNBU lQPTUTzBTBSFRVFTUQBUI l(&5zBTBSFRVFTUNFUIPE

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8IBUBCPVUBQSPUPDPMUIBUDBOSFDFJWF BOEFYFDVUFUIFSFRVFTUNFTTBHF BTBOBDUVBM3VCZTDSJQU SBUIFSUIBOBTBTUSJOH

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'PSFYBNQMF JGZPVSFDFJWFB3VCZTDSJQU bQPTUT`HFU UIBUDBMMTBNFUIPEHFU POB4USJOHPCKFDUbQPTUT` BTBSFRVFTUNFTTBHFʜ

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Toycol::Protocol.de fi ne(:ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.path { self } Toycol::Protocol.request.http_method { "GET" } end end } instance_eval message end 3VCZQSPUPDPM 6TFS 1SPUPDPM fi MFSVCZ 5IJTJTBEF fi OJUJPOPG3VCZQSPUPDPM UIBUJTCFBCMFUPFYFDVUF BSFRVFTUNFTTBHFBTB3VCZTDSJQU 3VCZQSPUPDPM

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3VCZQSPUPDPM Toycol::Protocol.de fi ne(:ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.path { self } Toycol::Protocol.request.http_method { "GET" } end end } instance_eval message end 6TFS 1SPUPDPM fi MFSVCZ "EEHFUNFUIPEUP4USJOHDMBTTUPCFBCMF UPDBMMJUGPSlQPTUTzBTB4USJOHPCKFDU

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Toycol::Protocol.de fi ne(:ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.path { self } Toycol::Protocol.request.http_method { "GET" } end end } instance_eval message end 3VCZQSPUPDPM 6TFS 1SPUPDPM fi MFSVCZ 5IFOVTFJOTUBODF@FWBMUPFYFDVUF UIFSFDFJWFESFRVFTUNFTTBHF lQPTUTzHFU BTB3VCZTDSJQU lQPTUTzHFU

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)PXFWFS BTZPVDBOTFF UIJTMPHJD DPOUBJOTBOJOKFDUJPOWVMOFSBCJMJUZ 5IFSFJTOPXBZUPQSFWFOU UIFFYFDVUJPOPGBEBOHFSPVTTDSJQU XIFOJUJTSFDFJWFE TVDIBTTZTUFN lSNSGz

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6OGPSUVOBUFMZ XFEPOULOPX XIBULJOEPGNFTTBHFT UIFDMJFOUXJMMTFOEUPUIFTFSWFS 5IFSFGPSF 5PZDPMEPFTOPUBMMPXUP XSJUFDPEFTDPOUBJOJOHTVDI WVMOFSBCJMJUJFTJO1SPUPDPM fi MF

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def start … while [email protected]? && [email protected]? begin request = @client.readpartial(CHUNK_SIZE) logger “Received message: #{request.inspect.chomp}” safe_execution! { @protocol.run!(request) } … end end … end MJCUPZDPMQSPYZSC 4BGFFYFDVUJPOPGUIFQSPUPDPM 5PZDPM1SPUPDPMSVOJTFYFDVUFEJOTJEF BCMPDLPGTBGF@FYFDVUJPOUPFOTVSFUIBU OPWVMOFSBCMFEF fi OJUJPOTBSFJO1SPUPDPM fi MFT

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def safe_execution!(&block) safe_executionable_tp.enable(&block) end def safe_executionable_tp @safe_executionable_tp ||= TracePoint.new(:script_compiled) do |tp| if tp.binding.receiver == Protocol \ && tp.method_id.to_s.match? /(.*eval|.*exec|`.+|%x\(|system|open|require|load)/ raise UnauthorizeError, … end end end 5PZDPM)FMQFSTBGF@FYFDVUJPO MJCUPZDPMIFMQFSSC 5PZDPM)FMQFSTBGF@FYFDVUJPO "OE5PZDPM)FMQFSTBGF@FYFDVUJPOBCMF@UQ UIBUTBGF@FYFDVUJPOVTFTJOUFSOBMMZ

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def safe_execution!(&block) safe_executionable_tp.enable(&block) end def safe_executionable_tp @safe_executionable_tp ||= TracePoint.new(:script_compiled) do |tp| if tp.binding.receiver == Protocol \ && tp.method_id.to_s.match? /(.*eval|.*exec|`.+|%x\(|system|open|require|load)/ raise UnauthorizeError, … end end end 5PZDPM)FMQFSTBGF@FYFDVUJPO MJCUPZDPMIFMQFSSC 6TF5SBDF1PJOUUPEFUFDUJGBOZEBOHFSPVT NFUIPETBSFCFJOHFYFDVUFEUIBUDPVME DBVTFJOKFDUJPOWVMOFSBCJMJUJFTɹ

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def safe_execution!(&block) safe_executionable_tp.enable(&block) end def safe_executionable_tp @safe_executionable_tp ||= TracePoint.new(:script_compiled) do |tp| if tp.binding.receiver == Protocol \ && tp.method_id.to_s.match? /(.*eval|.*exec|`.+|%x\(|system|open|require|load)/ raise UnauthorizeError, … end end end 5PZDPM)FMQFSTBGF@FYFDVUJPO MJCUPZDPMIFMQFSSC 5BSHFUNFUIPETBSFJODMVEJOHFWBMPSFYFD JOUIBUOBNF FYFDVUJOHFYUFSOBMDPNNBOET BOEMPBEJOH fi MFTGSPNPVUTJEF

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4P XFOFFEUPDPOTJEFSPG BNPSFTFDVSFXBZUPEF fi OFBQSPUPDPM UPSVOUIFBQQMJDBUJPO XJUI3VCZTDSJQUTBTSFRVFTUNFTTBHFT

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)PXBCPVUUIJT

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4BGF3VCZQSPUPDPM module SafeRuby PARSER_REGEX = /["'](?\/.*)["']\.(?[A-z]+)/ end Toycol::Protocol.de fi ne(:safe_ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.http_method { “GET" } end end } path, method = SafeRuby::PARSER_REGEX.match(message) { |m| [m[:path], m[:method]] } request.path { path } request_path.public_send(method) end 6TFS 1SPUPDPM fi MFTBGF@SVCZ 4BGF3VCZQSPUPDPM

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module SafeRuby PARSER_REGEX = /["'](?\/.*)["']\.(?[A-z]+)/ end Toycol::Protocol.de fi ne(:safe_ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.http_method { “GET" } end end } path, method = SafeRuby::PARSER_REGEX.match(message) { |m| [m[:path], m[:method]] } request.path { path } request_path.public_send(method) end 4BGF3VCZQSPUPDPM"EEBQBSTFS3FHFY 6TFS 1SPUPDPM fi MFTBGF@SVCZ 1SFQBSFBSFHVMBSFYQSFTTJPOUPQBSTF UIFSFRVFTUNFTTBHF

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module SafeRuby PARSER_REGEX = /["'](?\/.*)["']\.(?[A-z]+)/ end Toycol::Protocol.de fi ne(:safe_ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.http_method { “GET" } end end } path, method = SafeRuby::PARSER_REGEX.match(message) { |m| [m[:path], m[:method]] } request.path { path } request_path.public_send(method) end 6TJOHUIJTSFHVMBSFYQSFTTJPO HFUUXPTUSJOHT ᶃQBUIlQPTUTz "SFRVFTUQBUI ᶄNFUIPElHFUz "NFUIPEOBNFUPCFDBMMFEGPSUIFSFRVFTUQBUI 4BGF3VCZQSPUPDPM(FUBSFRVFTUQBUINFUIPE 6TFS 1SPUPDPM fi MFTBGF@SVCZ ᶃ ᶄ

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module SafeRuby PARSER_REGEX = /["'](?\/.*)["']\.(?[A-z]+)/ end Toycol::Protocol.de fi ne(:safe_ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.http_method { “GET" } end end } path, method = SafeRuby::PARSER_REGEX.match(message) { |m| [m[:path], m[:method]] } request.path { path } request_path.public_send(method) end 1SPUPDPM fi MFTBGF@SVCZ 4BGF3VCZQSPUPDPM4UPSFUIFSFRVFTUQBUI 4UPSFlQPTUTzBTBSFRVFTUQBUI JO5PZDPM1SPUPDPMSFRVFTUQBUI

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module SafeRuby PARSER_REGEX = /["'](?\/.*)["']\.(?[A-z]+)/ end Toycol::Protocol.de fi ne(:safe_ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.http_method { “GET" } end end } path, method = SafeRuby::PARSER_REGEX.match(message) { |m| [m[:path], m[:method]] } request.path { path } request_path.public_send(method) end 1SPUPDPM fi MFTBGF@SVCZ 4BGF3VCZQSPUPDPM3FUSJFWFUIFSFRVFTUQBUI 5IFO 5PZDPM1SPUPDPMSFRVFTU@QBUI SFUVSOTB4USJOHPCKFDUlQPTUTz KVTUTUPSFEBTBSFRVFTUQBUI

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module SafeRuby PARSER_REGEX = /["'](?\/.*)["']\.(?[A-z]+)/ end Toycol::Protocol.de fi ne(:safe_ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.http_method { “GET" } end end } path, method = SafeRuby::PARSER_REGEX.match(message) { |m| [m[:path], m[:method]] } request.path { path } request_path.public_send(method) end 1SPUPDPM fi MFTBGF@SVCZ 4BGF3VCZQSPUPDPM"EEHFUUP4USJOHDMBTT "EEHFUNFUIPEUPUIF4USJOHDMBTT 5IJTJTUPTUPSFBTUSJOH(&5JO 5PZDPM1SPUPDPMSFRVFTUIUUQ@NFUIPE

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module SafeRuby PARSER_REGEX = /["'](?\/.*)["']\.(?[A-z]+)/ end Toycol::Protocol.de fi ne(:safe_ruby) do |message| using Module.new { re fi ne String do def get Toycol::Protocol.request.http_method { “GET" } end end } path, method = SafeRuby::PARSER_REGEX.match(message) { |m| [m[:path], m[:method]] } request.path { path } request_path.public_send(method) end 1SPUPDPM fi MFTBGF@SVCZ 4BGF3VCZQSPUPDPM$BMMHFUGPSlQPTUTz $BMMUIFHFUNFUIPEPOUIF4USJOHPCKFDUlQPTUTz &YFDVUJOHUIJTMJOFXJMMHJWFZPVUIFTBNFSFTVMU BTFYFDVUJOHUIFSFRVFTUNFTTBHFlQPTUTzHFU

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require "rack" require "toycol" Toycol::Protocol.use(:safe_ruby) class App def call(env) case env["REQUEST_METHOD"] when “GET” [200, { "Content-Type" => "text/html" }, [“User<1> I love Ruby!\n”, “User<2> I love RubyKaigi!\n”]] end end end run App.new )FSFJTBOBQQMJDBUJPO fi MFGPSUIJTQSPKFDU 6TFS DPO fi H@TBGF@SVCZSV 3VO4BGF3VCZQSPUPDPM

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require “sinatra/base" require "toycol" Toycol::Protocol.use(:safe_ruby) class App < Sinatra::Base get “/posts” do [“User<1> I love Ruby!\n”, “User<2> I love RubyKaigi!\n”] end run! if app_ fi le == $PROGRAM_NAME end 6TFS BQQSC 3VO4BGF3VCZQSPUPDPMXJUIB4JOBUSBBQQ 4JOBUSBBQQGPS4BGF3VCZQSPUPDPM

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require_relative “con fi g/environment" require "toycol" Toycol::Protocol.use(:safe_ruby) run! Rails.application Rails.application.load_server 6TFS DPO fi HSV 4BGF3VCZQSPUPDPMXJUIB3BJMTBQQ "3BJMTBQQGPS4BGF3VCZQSPUPDPM SBJMTHFOFSBUFTDB ff PMEQPTUT DPNNBOEIBTCFFOFYFDVUFE

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