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Use the encrypted DNS FFI as a transport provider
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| // | ||
| // EncryptedDNSProxy.swift | ||
| // MullvadRustRuntime | ||
| // | ||
| // Created by Emils on 24/09/2024. | ||
| // Copyright © 2024 Mullvad VPN AB. All rights reserved. | ||
| // | ||
|
|
||
| import Foundation | ||
| import MullvadRustRuntimeProxy | ||
|
|
||
| enum EncryptedDnsProxyError: Error { | ||
| case start(err: Int32) | ||
| } | ||
|
|
||
| public class EncryptedDNSProxy { | ||
| private var proxyConfig: ProxyHandle | ||
| private var stateLock = NSLock() | ||
| private var didStart = false | ||
| private let state: OpaquePointer | ||
|
|
||
| public init() { | ||
| state = encrypted_dns_proxy_init() | ||
| proxyConfig = ProxyHandle(context: nil, port: 0) | ||
| } | ||
|
|
||
| public func localPort() -> UInt16 { | ||
| stateLock.lock() | ||
| defer { stateLock.unlock() } | ||
| return proxyConfig.port | ||
| } | ||
|
|
||
| public func start() throws { | ||
| stateLock.lock() | ||
| defer { stateLock.unlock() } | ||
| guard didStart == false else { return } | ||
|
|
||
| let err = encrypted_dns_proxy_start(state, &proxyConfig) | ||
| if err != 0 { | ||
| throw EncryptedDnsProxyError.start(err: err) | ||
| } | ||
| didStart = true | ||
| } | ||
|
|
||
| public func stop() { | ||
| stateLock.lock() | ||
| defer { stateLock.unlock() } | ||
| guard didStart == true else { return } | ||
| didStart = false | ||
|
|
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| encrypted_dns_proxy_stop(&proxyConfig) | ||
| } | ||
|
|
||
| deinit { | ||
| if didStart { | ||
| encrypted_dns_proxy_stop(&proxyConfig) | ||
| } | ||
|
|
||
| encrypted_dns_proxy_free(state) | ||
| } | ||
| } |
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