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actor的最小依赖原则

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anlicheng 2026-02-04 13:56:05 +08:00
parent f801344370
commit b1c6b45f35
3 changed files with 51 additions and 65 deletions
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23
Tun/Punchnet/Actors/SDLNATProberActor.swift
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@ -52,8 +52,7 @@ actor SDLNATProberActor {
// MARK: - Dependencies // MARK: - Dependencies
private let udpHole: SDLUDPHole nonisolated private let addressArray: [[SocketAddress]]
private let addressArray: [[SocketAddress]]
// MARK: - Completion // MARK: - Completion
private var cookieId: UInt32 = 1 private var cookieId: UInt32 = 1
@ -62,14 +61,13 @@ actor SDLNATProberActor {
// MARK: - Init // MARK: - Init
init(udpHole: SDLUDPHole, addressArray: [[SocketAddress]]) { init(addressArray: [[SocketAddress]]) {
self.udpHole = udpHole
self.addressArray = addressArray self.addressArray = addressArray
} }
// MARK: - Public API // MARK: - Public API
func probeNatType() async -> NatType { func probeNatType(using udpHole: SDLUDPHole) async -> NatType {
let cookieId = self.cookieId let cookieId = self.cookieId
self.cookieId &+= 1 self.cookieId &+= 1
@ -86,13 +84,13 @@ actor SDLNATProberActor {
) )
self.sessions[cookieId] = session self.sessions[cookieId] = session
Task { Task {
await self.sendProbe(cookie: cookieId) await self.sendProbe(using: udpHole, cookie: cookieId)
} }
} }
} }
/// UDP 层收到 STUN 响应后调用 /// UDP 层收到 STUN 响应后调用
func handleProbeReply(reply: SDLStunProbeReply) async { func handleProbeReply(localAddress: SocketAddress?, reply: SDLStunProbeReply) async {
guard let session = self.sessions[reply.cookie] else { guard let session = self.sessions[reply.cookie] else {
return return
} }
@ -101,7 +99,6 @@ actor SDLNATProberActor {
// 提前退出的情况，没有nat映射 // 提前退出的情况，没有nat映射
if session.replies[1] != nil { if session.replies[1] != nil {
let localAddress = self.udpHole.getLocalAddress()
if await reply.socketAddress() == localAddress { if await reply.socketAddress() == localAddress {
finish(cookie: session.cookieId, .noNat) finish(cookie: session.cookieId, .noNat)
return return
@ -160,11 +157,11 @@ actor SDLNATProberActor {
// MARK: - Internal helpers // MARK: - Internal helpers
private func sendProbe(cookie: UInt32) async { private func sendProbe(using udpHole: SDLUDPHole, cookie: UInt32) async {
self.udpHole.send(type: .stunProbe, data: makeProbePacket(cookieId: cookie, step: 1, attr: .none), remoteAddress: addressArray[0][0]) udpHole.send(type: .stunProbe, data: makeProbePacket(cookieId: cookie, step: 1, attr: .none), remoteAddress: addressArray[0][0])
self.udpHole.send(type: .stunProbe, data: makeProbePacket(cookieId: cookie, step: 2, attr: .none), remoteAddress: addressArray[1][1]) udpHole.send(type: .stunProbe, data: makeProbePacket(cookieId: cookie, step: 2, attr: .none), remoteAddress: addressArray[1][1])
self.udpHole.send(type: .stunProbe, data: makeProbePacket(cookieId: cookie, step: 3, attr: .peer), remoteAddress: addressArray[0][0]) udpHole.send(type: .stunProbe, data: makeProbePacket(cookieId: cookie, step: 3, attr: .peer), remoteAddress: addressArray[0][0])
self.udpHole.send(type: .stunProbe, data: makeProbePacket(cookieId: cookie, step: 4, attr: .port), remoteAddress: addressArray[0][0]) udpHole.send(type: .stunProbe, data: makeProbePacket(cookieId: cookie, step: 4, attr: .port), remoteAddress: addressArray[0][0])
} }
private func makeProbePacket(cookieId: UInt32, step: UInt32, attr: SDLProbeAttr) -> Data { private func makeProbePacket(cookieId: UInt32, step: UInt32, attr: SDLProbeAttr) -> Data {

40
Tun/Punchnet/Actors/SDLPuncherActor.swift
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@ -9,20 +9,16 @@ import Foundation
import NIOCore import NIOCore
actor SDLPuncherActor { actor SDLPuncherActor {
nonisolated private let cooldown: Duration = .seconds(5)
// dstMac // dstMac
private var coolingDown: Set<Data> = [] private var coolingDown: Set<Data> = []
private let cooldown: Duration = .seconds(5)
private var udpHole: SDLUDPHole
private var pktId: UInt32 = 1 private var pktId: UInt32 = 1
// 提交后还没有响应的请求 // 提交后还没有响应的请求
private var pendingRequests: [UInt32:RegisterRequest] = [:] private var pendingRequests: [UInt32: RegisterRequest] = [:]
// 处理holer // 处理holer
private var querySocketAddress: SocketAddress nonisolated private let querySocketAddress: SocketAddress
nonisolated private let(requestStream, requestContinuation) = AsyncStream.makeStream(of: RegisterRequest.self, bufferingPolicy: .unbounded)
struct RegisterRequest { struct RegisterRequest {
let srcMac: Data let srcMac: Data
@ -30,25 +26,13 @@ actor SDLPuncherActor {
let networkId: UInt32 let networkId: UInt32
} }
init(udpHole: SDLUDPHole, querySocketAddress: SocketAddress) { init(querySocketAddress: SocketAddress) {
self.udpHole = udpHole
self.querySocketAddress = querySocketAddress self.querySocketAddress = querySocketAddress
} }
nonisolated func submitRegisterRequest(request: RegisterRequest) { func submitRegisterRequest(using udpHole: SDLUDPHole?, request: RegisterRequest) {
self.requestContinuation.yield(request)
}
func startConsuming() async {
for await request in self.requestStream {
self.submitRegisterRequest(request: request)
}
}
private func handleRegisterRequest(request: RegisterRequest) {
let dstMac = request.dstMac let dstMac = request.dstMac
guard let udpHole, !coolingDown.contains(dstMac) else {
guard !coolingDown.contains(dstMac) else {
return return
} }
@ -60,9 +44,9 @@ actor SDLPuncherActor {
if self.pktId == 0 { if self.pktId == 0 {
self.pktId = 1 self.pktId = 1
} }
self.tryHole(using: udpHole, pktId: pktId, request: request)
Task { Task {
await self.tryHole(pktId: pktId, request: request)
// 启动冷却期 // 启动冷却期
try? await Task.sleep(for: .seconds(5)) try? await Task.sleep(for: .seconds(5))
self.endCooldown(for: dstMac) self.endCooldown(for: dstMac)
@ -70,7 +54,7 @@ actor SDLPuncherActor {
} }
} }
func handlePeerInfo(peerInfo: SDLPeerInfo) async { func handlePeerInfo(using udpHole: SDLUDPHole, peerInfo: SDLPeerInfo) async {
if let request = pendingRequests.removeValue(forKey: peerInfo.pktID) { if let request = pendingRequests.removeValue(forKey: peerInfo.pktID) {
if let remoteAddress = try? await peerInfo.v4Info.socketAddress() { if let remoteAddress = try? await peerInfo.v4Info.socketAddress() {
SDLLogger.shared.log("[SDLContext] hole sock address: \(remoteAddress)", level: .debug) SDLLogger.shared.log("[SDLContext] hole sock address: \(remoteAddress)", level: .debug)
@ -80,7 +64,7 @@ actor SDLPuncherActor {
register.srcMac = request.srcMac register.srcMac = request.srcMac
register.dstMac = request.dstMac register.dstMac = request.dstMac
self.udpHole.send(type: .register, data: try! register.serializedData(), remoteAddress: remoteAddress) udpHole.send(type: .register, data: try! register.serializedData(), remoteAddress: remoteAddress)
} else { } else {
SDLLogger.shared.log("[SDLContext] hole sock address is invalid: \(peerInfo.v4Info)", level: .warning) SDLLogger.shared.log("[SDLContext] hole sock address is invalid: \(peerInfo.v4Info)", level: .warning)
} }
@ -95,14 +79,14 @@ actor SDLPuncherActor {
self.pendingRequests.removeValue(forKey: pktId) self.pendingRequests.removeValue(forKey: pktId)
} }
private func tryHole(pktId: UInt32, request: RegisterRequest) async { private func tryHole(using udpHole: SDLUDPHole, pktId: UInt32, request: RegisterRequest) {
var queryInfo = SDLQueryInfo() var queryInfo = SDLQueryInfo()
queryInfo.pktID = pktId queryInfo.pktID = pktId
queryInfo.dstMac = request.dstMac queryInfo.dstMac = request.dstMac
self.pendingRequests[pktId] = request self.pendingRequests[pktId] = request
if let queryData = try? queryInfo.serializedData() { if let queryData = try? queryInfo.serializedData() {
self.udpHole.send(type: .queryInfo, data: queryData, remoteAddress: self.querySocketAddress) udpHole.send(type: .queryInfo, data: queryData, remoteAddress: self.querySocketAddress)
} }
} }
} }

53
Tun/Punchnet/SDLContextActor.swift
View File

@ -36,13 +36,13 @@ actor SDLContextActor {
private var udpHoleWorkers: [Task<Void, Never>]? private var udpHoleWorkers: [Task<Void, Never>]?
nonisolated let providerAdapter: SDLTunnelProviderAdapter nonisolated let providerAdapter: SDLTunnelProviderAdapter
var puncherActor: SDLPuncherActor?
// dns的client对象 // dns的client对象
private var dnsClient: SDLDNSClient? private var dnsClient: SDLDNSClient?
private var dnsWorker: Task<Void, Never>? private var dnsWorker: Task<Void, Never>?
nonisolated private let puncherActor: SDLPuncherActor
// 网络探测对象 // 网络探测对象
var proberActor: SDLNATProberActor? nonisolated private let proberActor: SDLNATProberActor
// 数据包读取任务 // 数据包读取任务
private var readTask: Task<(), Never>? private var readTask: Task<(), Never>?
@ -71,6 +71,9 @@ actor SDLContextActor {
self.sessionManager = SessionManager() self.sessionManager = SessionManager()
self.arpServer = ArpServer(known_macs: [:]) self.arpServer = ArpServer(known_macs: [:])
self.providerAdapter = SDLTunnelProviderAdapter(provider: provider) self.providerAdapter = SDLTunnelProviderAdapter(provider: provider)
self.puncherActor = SDLPuncherActor(querySocketAddress: config.stunSocketAddress)
self.proberActor = SDLNATProberActor(addressArray: config.stunProbeSocketAddressArray)
} }
public func start() { public func start() {
@ -165,6 +168,10 @@ actor SDLContextActor {
let udpHole = try SDLUDPHole() let udpHole = try SDLUDPHole()
try udpHole.start() try udpHole.start()
SDLLogger.shared.log("[SDLContext] udpHole started") SDLLogger.shared.log("[SDLContext] udpHole started")
// 获取当前udp启动的地址
let localAddress = udpHole.getLocalAddress()
self.udpHole = udpHole self.udpHole = udpHole
await udpHole.channelIsActived() await udpHole.channelIsActived()
@ -209,11 +216,11 @@ actor SDLContextActor {
case .registerSuperNak(let registerSuperNak): case .registerSuperNak(let registerSuperNak):
await self.handleRegisterSuperNak(nakPacket: registerSuperNak) await self.handleRegisterSuperNak(nakPacket: registerSuperNak)
case .peerInfo(let peerInfo): case .peerInfo(let peerInfo):
await self.puncherActor?.handlePeerInfo(peerInfo: peerInfo) await self.puncherActor.handlePeerInfo(using: udpHole, peerInfo: peerInfo)
case .event(let event): case .event(let event):
try? await self.handleEvent(event: event) try? await self.handleEvent(event: event)
case .stunProbeReply(let probeReply): case .stunProbeReply(let probeReply):
await self.proberActor?.handleProbeReply(reply: probeReply) await self.proberActor.handleProbeReply(localAddress: localAddress, reply: probeReply)
case .register(let register): case .register(let register):
try? await self.handleRegister(remoteAddress: remoteAddress, register: register) try? await self.handleRegister(remoteAddress: remoteAddress, register: register)
case .registerAck(let registerAck): case .registerAck(let registerAck):
@ -255,16 +262,11 @@ actor SDLContextActor {
return return
} }
self.puncherActor = SDLPuncherActor(udpHole: udpHole, querySocketAddress: config.stunSocketAddress)
self.proberActor = SDLNATProberActor(udpHole: udpHole, addressArray: self.config.stunProbeSocketAddressArray)
// 开始探测nat的类型 // 开始探测nat的类型
Task.detached { Task {
await Task.yield() let natType = await self.proberActor.probeNatType(using: udpHole)
if let natType = await self.proberActor?.probeNatType() { self.setNatType(natType: natType)
await self.setNatType(natType: natType) SDLLogger.shared.log("[SDLContext] nat_type is: \(natType)")
SDLLogger.shared.log("[SDLContext] nat_type is: \(natType)")
}
} }
// 注册 // 注册
@ -410,7 +412,7 @@ actor SDLContextActor {
} }
} }
private func handleData(data: SDLData) throws { private func handleData(data: SDLData) async throws {
guard let aesKey = self.aesKey else { guard let aesKey = self.aesKey else {
return return
} }
@ -439,7 +441,7 @@ actor SDLContextActor {
case .request: case .request:
SDLLogger.shared.log("[SDLContext] get arp request packet", level: .debug) SDLLogger.shared.log("[SDLContext] get arp request packet", level: .debug)
let response = ARPPacket.arpResponse(for: arpPacket, mac: networkAddr.mac, ip: networkAddr.ip) let response = ARPPacket.arpResponse(for: arpPacket, mac: networkAddr.mac, ip: networkAddr.ip)
self.routeLayerPacket(dstMac: arpPacket.senderMAC, type: .arp, data: response.marshal()) await self.routeLayerPacket(dstMac: arpPacket.senderMAC, type: .arp, data: response.marshal())
case .response: case .response:
SDLLogger.shared.log("[SDLContext] get arp response packet", level: .debug) SDLLogger.shared.log("[SDLContext] get arp response packet", level: .debug)
self.arpServer.append(ip: arpPacket.senderIP, mac: arpPacket.senderMAC) self.arpServer.append(ip: arpPacket.senderIP, mac: arpPacket.senderMAC)
@ -498,7 +500,7 @@ actor SDLContextActor {
} }
// 处理读取的每个数据包 // 处理读取的每个数据包
private func dealPacket(packet: IPPacket) { private func dealPacket(packet: IPPacket) async {
let networkAddr = self.config.networkAddress let networkAddr = self.config.networkAddress
if SDLDNSClient.Helper.isDnsRequestPacket(ipPacket: packet) { if SDLDNSClient.Helper.isDnsRequestPacket(ipPacket: packet) {
let destIp = packet.header.destination_ip let destIp = packet.header.destination_ip
@ -517,21 +519,21 @@ actor SDLContextActor {
// 查找arp缓存中是否有目标mac地址 // 查找arp缓存中是否有目标mac地址
if let dstMac = self.arpServer.query(ip: dstIp) { if let dstMac = self.arpServer.query(ip: dstIp) {
self.routeLayerPacket(dstMac: dstMac, type: .ipv4, data: packet.data) await self.routeLayerPacket(dstMac: dstMac, type: .ipv4, data: packet.data)
} }
else { else {
SDLLogger.shared.log("[SDLContext] dstIp: \(dstIp.asIpAddress()) arp query not found, broadcast", level: .debug) SDLLogger.shared.log("[SDLContext] dstIp: \(dstIp.asIpAddress()) arp query not found, broadcast", level: .debug)
// 构造arp广播 // 构造arp广播
let arpReqeust = ARPPacket.arpRequest(senderIP: networkAddr.ip, senderMAC: networkAddr.mac, targetIP: dstIp) let arpReqeust = ARPPacket.arpRequest(senderIP: networkAddr.ip, senderMAC: networkAddr.mac, targetIP: dstIp)
self.routeLayerPacket(dstMac: ARPPacket.broadcastMac , type: .arp, data: arpReqeust.marshal()) await self.routeLayerPacket(dstMac: ARPPacket.broadcastMac , type: .arp, data: arpReqeust.marshal())
} }
} }
private func routeLayerPacket(dstMac: Data, type: LayerPacket.PacketType, data: Data) { private func routeLayerPacket(dstMac: Data, type: LayerPacket.PacketType, data: Data) async {
let networkAddr = self.config.networkAddress let networkAddr = self.config.networkAddress
// 将数据封装层2层的数据包 // 将数据封装层2层的数据包
let layerPacket = LayerPacket(dstMac: dstMac, srcMac: networkAddr.mac, type: type, data: data) let layerPacket = LayerPacket(dstMac: dstMac, srcMac: networkAddr.mac, type: type, data: data)
guard let aesKey = self.aesKey, let encodedPacket = try? self.aesCipher.encrypt(aesKey: aesKey, data: layerPacket.marshal()) else { guard let udpHole = self.udpHole, let aesKey = self.aesKey, let encodedPacket = try? self.aesCipher.encrypt(aesKey: aesKey, data: layerPacket.marshal()) else {
return return
} }
@ -547,22 +549,25 @@ actor SDLContextActor {
// 广播地址不要去尝试打洞 // 广播地址不要去尝试打洞
if ARPPacket.isBroadcastMac(dstMac) { if ARPPacket.isBroadcastMac(dstMac) {
// 通过super_node进行转发 // 通过super_node进行转发
self.udpHole?.send(type: .data, data: data, remoteAddress: self.config.stunSocketAddress) udpHole.send(type: .data, data: data, remoteAddress: self.config.stunSocketAddress)
} }
else { else {
// 通过session发送到对端 // 通过session发送到对端
if let session = self.sessionManager.getSession(toAddress: dstMac) { if let session = self.sessionManager.getSession(toAddress: dstMac) {
SDLLogger.shared.log("[SDLContext] send packet by session: \(session)", level: .debug) SDLLogger.shared.log("[SDLContext] send packet by session: \(session)", level: .debug)
self.udpHole?.send(type: .data, data: data, remoteAddress: session.natAddress) udpHole.send(type: .data, data: data, remoteAddress: session.natAddress)
self.flowTracer.inc(num: data.count, type: .p2p) self.flowTracer.inc(num: data.count, type: .p2p)
} }
else { else {
// 通过super_node进行转发 // 通过super_node进行转发
self.udpHole?.send(type: .data, data: data, remoteAddress: self.config.stunSocketAddress) udpHole.send(type: .data, data: data, remoteAddress: self.config.stunSocketAddress)
// 流量统计 // 流量统计
self.flowTracer.inc(num: data.count, type: .forward) self.flowTracer.inc(num: data.count, type: .forward)
// 尝试打洞 // 尝试打洞
self.puncherActor?.submitRegisterRequest(request: .init(srcMac: networkAddr.mac, dstMac: dstMac, networkId: networkAddr.networkId)) Task.detached {
await self.puncherActor.submitRegisterRequest(using: udpHole, request: .init(srcMac: networkAddr.mac, dstMac: dstMac, networkId: networkAddr.networkId))
}
} }
} }
} }