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Network.framework ͷ঺հ omochimetaru @ 1

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֓ཁ ৽͍͠ωοτϫʔΫϥΠϒϥϦ URLSession, CFSocket, ੜsocket ʹଓ͘ୈ4ͷબ୒ࢶ 2

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֓ཁ ιέοτϨϕϧͷ௨৴Λѻ͏ϩʔϨΠϠʔͷϥΠϒϥϦ URLSession΋಺෦Ͱ࢖༻͍ͯ͠Δ 3

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ಛ௃ Swift API, C API ੜιέοτͰ͸໘౗ͳࣄΛඪ४ఏڙ DispatchQueueϕʔεͷඇಉظAPI ϞόΠϧωοτϫʔΫΛҙࣝͨ͠ઃܭ 4

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ੜιέοτͰ͸໘౗ͳࣄΛඪ४ఏڙ IPv4, IPv6 TCP, UDP ඇಉظͳDNS໊લղܾ TLSαϙʔτ ࠷ॳʹࢦఆ͢Ε͹ޙ͸Ұॹ 5

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DispatchQueueϕʔεͷඇಉظAPI class NWConnection { // ઀ଓઌͱϓϩτίϧͷࢦఆ init(host: NWEndpoint.Host, port: NWEndpoint.Port, using: NWParameters) // ઀ଓ, ੾அίʔϧόοΫ var stateUpdateHandler: ((NWConnection.State) -> Void)? // ઀ଓ func start(queue: DispatchQueue) } 6

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DispatchQueueϕʔεͷඇಉظAPI class NWConnection { // ૹ৴ func send(content: Data?, contentContext: NWConnection.ContentContext, isComplete: Bool, completion: NWConnection.SendCompletion) enum SendCompletion { case contentProcessed(@escaping (NWError?) -> Void) case idempotent } } 7

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DispatchQueueϕʔεͷඇಉظAPI class NWConnection { // ड৴ func receive( minimumIncompleteLength: Int, maximumLength: Int, completion: @escaping (Data?, NWConnection.ContentContext?, /* isCompleted */ Bool, NWError?) -> Void) } 8

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DispatchQueueϕʔεͷඇಉظAPI class NWListener { // ଴ͪड͚ࢦఆ init?(parameters: NWParameters, port: NWEndpoint.Port) // ઀ଓϋϯυϥ var newConnectionHandler: ((NWConnection) -> Void)? func start(queue: DispatchQueue) } 9

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ϞόΠϧωοτϫʔΫΛҙࣝͨ͠ઃܭ ϞόΠϧͰ͸4GͱWifiΛ௫ΜͩΓ཭ͨ͠Γ͢Δ NWConnection.start() ͷࡍɺ ճઢ͕1ͭ΋ແͯ͘΋ .failed ʹ͸ͳΒͳ͍ɻ .waiting ʹͳΓ଴ػ͢Δɻ ճઢΛ௫Ί͹઀ଓࢼߦ͢Δɻ 10

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ϞόΠϧωοτϫʔΫΛҙࣝͨ͠ઃܭ class NWConnection { // ΑΓྑ͍ܦ࿏ͷ௨஌ var betterPathUpdateHandler: ((Bool) -> Void)? // ݱࡏͷܦ࿏Λ੾அɺผͷܦ࿏Λࢪߦ func cancelCurrentEndpoint() } ※͜ͷϖʔδͷ಺༰͸ௐ͕ࠪ؁͍Ͱ͢ɻ 11

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ࢿྉ • ϦϑΝϨϯε Network https://developer.apple.com/documentation/network • WWDC2018ͷಈը Introducing Network.framework: A modern alternative to Sockets https://developer.apple.com/videos/play/wwdc2018/715/ 12

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ࢿྉ • netcatͷ࣮૷αϯϓϧ, Cݴޠ Implementing netcat with Network Framework https://developer.apple.com/documentation/network/ implementingnetcatwithnetworkframework • ιʔείʔυίϝϯτ swift/stdlib/public/SDK/Network https://github.com/apple/swift/tree/master/stdlib/public/ SDK/Network 13

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HTTPϥΠϒϥϦΛ࡞ͬͨ omochi/ForceHTTP https://github.com/omochi/ForceHTTP ATSͷ੍ݶΛड͚ͳ͍ 14

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σϞ omochi/ForceHTTPExample https://github.com/omochi/ForceHTTPExample 15