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//
// UdpOverTcpObfuscator.swift
// MullvadVPN
//
// Created by Jon Petersson on 2025-09-04.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import MullvadSettings
import MullvadTypes
struct UdpOverTcpObfuscator: RelayObfuscating {
let relays: REST.ServerRelaysResponse
let tunnelSettings: LatestTunnelSettings
let connectionAttemptCount: UInt
func obfuscate() -> RelayObfuscation {
RelayObfuscation(
allRelays: relays,
obfuscatedRelays: relays,
port: obfuscateUdpOverTcpPort(
tunnelSettings: tunnelSettings,
connectionAttemptCount: connectionAttemptCount
),
method: .udpOverTcp
)
}
private func obfuscateUdpOverTcpPort(
tunnelSettings: LatestTunnelSettings,
connectionAttemptCount: UInt
) -> RelayConstraint<UInt16> {
switch tunnelSettings.wireGuardObfuscation.udpOverTcpPort {
case .automatic:
return [.only(80), .only(5001)].randomElement()!
case .port5001:
return .only(5001)
case .port80:
return .only(80)
}
}
}
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