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show outgoing connection address on map view
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119 changes: 119 additions & 0 deletions
119
ios/MullvadVPN/GeneralAPIs/OutgoingConnectionProxy.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| // | ||
| // OutgoingConnectionProxy.swift | ||
| // MullvadREST | ||
| // | ||
| // Created by Mojgan on 2023-10-24. | ||
| // Copyright © 2023 Mullvad VPN AB. All rights reserved. | ||
| // | ||
|
|
||
| import Foundation | ||
| import MullvadREST | ||
| import MullvadTypes | ||
| import Network | ||
|
|
||
| protocol OutgoingConnectionHandling { | ||
| func getIPV6(retryStrategy: REST.RetryStrategy) async throws -> OutgoingConnectionProxy.IPV6ConnectionData | ||
| func getIPV4(retryStrategy: REST.RetryStrategy) async throws -> OutgoingConnectionProxy.IPV4ConnectionData | ||
| } | ||
|
|
||
| final class OutgoingConnectionProxy: OutgoingConnectionHandling { | ||
| private enum ExitIPVersion: String { | ||
| case v4 = "ipv4", v6 = "ipv6" | ||
|
|
||
| var host: String { | ||
| "\(rawValue).am.i.mullvad.net" | ||
| } | ||
| } | ||
|
|
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| let urlSession: URLSession | ||
|
|
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| init(urlSession: URLSession) { | ||
| self.urlSession = urlSession | ||
| } | ||
|
|
||
| func getIPV6(retryStrategy: REST.RetryStrategy) async throws -> IPV6ConnectionData { | ||
| try await perform(retryStrategy: retryStrategy, version: .v6) | ||
| } | ||
|
|
||
| func getIPV4(retryStrategy: REST.RetryStrategy) async throws -> IPV4ConnectionData { | ||
| try await perform(retryStrategy: retryStrategy, version: .v4) | ||
| } | ||
|
|
||
| private func perform<T: Decodable>(retryStrategy: REST.RetryStrategy, version: ExitIPVersion) async throws -> T { | ||
| let delayIterator = retryStrategy.makeDelayIterator() | ||
| for _ in 0 ..< retryStrategy.maxRetryCount { | ||
| do { | ||
| return try await perform(host: version.host) | ||
| } catch { | ||
| // ignore if request is cancelled | ||
| if case URLError.cancelled = error { | ||
| throw error | ||
| } else { | ||
| // retry with the delay | ||
| guard let delay = delayIterator.next() else { throw error } | ||
| let mills = UInt64(max(0, delay.milliseconds)) | ||
| let nanos = mills.saturatingMultiplication(1_000_000) | ||
| try await Task.sleep(nanoseconds: nanos) | ||
| } | ||
| } | ||
| } | ||
| return try await perform(host: version.host) | ||
| } | ||
|
|
||
| private func perform<T: Decodable>(host: String) async throws -> T { | ||
| var urlComponents = URLComponents() | ||
| urlComponents.scheme = "https" | ||
| urlComponents.host = host | ||
| urlComponents.path = "/json" | ||
|
|
||
| guard let url = urlComponents.url else { | ||
| throw REST.Error.network(URLError(.badURL)) | ||
| } | ||
| do { | ||
| let request = URLRequest( | ||
| url: url, | ||
| cachePolicy: .useProtocolCachePolicy, | ||
| timeoutInterval: REST.defaultAPINetworkTimeout.timeInterval | ||
| ) | ||
| let (data, response) = try await urlSession.data(for: request) | ||
| guard let httpResponse = response as? HTTPURLResponse else { | ||
| throw REST.Error.network(URLError(.badServerResponse)) | ||
| } | ||
| let decoder = JSONDecoder() | ||
| guard (200 ..< 300).contains(httpResponse.statusCode) else { | ||
| throw REST.Error.unhandledResponse( | ||
| httpResponse.statusCode, | ||
| try? decoder.decode( | ||
| REST.ServerErrorResponse.self, | ||
| from: data | ||
| ) | ||
| ) | ||
| } | ||
| let connectionData = try decoder.decode(T.self, from: data) | ||
| return connectionData | ||
|
|
||
| } catch { | ||
| throw error | ||
| } | ||
| } | ||
| } | ||
|
|
||
| extension OutgoingConnectionProxy { | ||
| typealias IPV4ConnectionData = OutgoingConnectionData<IPv4Address> | ||
| typealias IPV6ConnectionData = OutgoingConnectionData<IPv6Address> | ||
|
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| // MARK: - OutgoingConnectionData | ||
|
|
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| struct OutgoingConnectionData<T: Codable & IPAddress>: Codable, Equatable { | ||
| let ip: T | ||
| let exitIP: Bool | ||
|
|
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| enum CodingKeys: String, CodingKey { | ||
| case ip, exitIP = "mullvad_exit_ip" | ||
| } | ||
|
|
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| static func == (lhs: Self, rhs: Self) -> Bool { | ||
| lhs.ip.rawValue == rhs.ip.rawValue && lhs.exitIP == rhs.exitIP | ||
| } | ||
| } | ||
| } |
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