1 files changed, 0 insertions, 81 deletions
diff --git a/common/testutils/devicetests/com/android/testutils/NatExternalPacketForwarder.kt b/common/testutils/devicetests/com/android/testutils/NatExternalPacketForwarder.kt
deleted file mode 100644
index d7961a08..00000000
--- a/common/testutils/devicetests/com/android/testutils/NatExternalPacketForwarder.kt
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.testutils
-
-import java.io.FileDescriptor
-import java.net.InetAddress
-
-/**
- * A class that forwards packets from the external {@link TestNetworkInterface} to the internal
- * {@link TestNetworkInterface} with NAT. See {@link NatPacketForwarderBase} for detail.
- */
-class NatExternalPacketForwarder(
-    srcFd: FileDescriptor,
-    mtu: Int,
-    dstFd: FileDescriptor,
-    extAddr: InetAddress,
-    natMap: PacketBridge.NatMap
-) : NatPacketForwarderBase(srcFd, mtu, dstFd, extAddr, natMap) {
-
-    /**
-     * Rewrite addresses, ports and fix up checksums for packets received on the external
-     * interface.
-     *
-     * Incoming response from external interface which is being forwarded to the internal
-     * interface with translated address, e.g. 1.2.3.4:80 -> 8.8.8.8:1234
-     * will be translated into 8.8.8.8:80 -> 192.168.1.1:5678.
-     *
-     * For packets that are not an incoming response, do not forward them to the
-     * internal interface.
-     */
-    override fun preparePacketForForwarding(buf: ByteArray, len: Int, version: Int, proto: Int) {
-        val (addrPos, addrLen) = getAddressPositionAndLength(version)
-
-        // TODO: support one external address per ip version.
-        val extAddrBuf = mExtAddr.address
-        if (addrLen != extAddrBuf.size) throw IllegalStateException("Packet IP version mismatch")
-
-        // Get internal address by port.
-        val transportOffset =
-            if (version == 4) PacketReflector.IPV4_HEADER_LENGTH
-            else PacketReflector.IPV6_HEADER_LENGTH
-        val dstPort = getPortAt(buf, transportOffset + DESTINATION_PORT_OFFSET)
-        val intAddrInfo = synchronized(mNatMap) { mNatMap.fromExternalPort(dstPort) }
-        // No mapping, skip. This usually happens if the connection is initiated directly on
-        // the external interface, e.g. DNS64 resolution, network validation, etc.
-        if (intAddrInfo == null) return
-
-        val intAddrBuf = intAddrInfo.address.address
-        val intPort = intAddrInfo.port
-
-        // Copy the original destination to into the source address.
-        for (i in 0 until addrLen) {
-            buf[addrPos + i] = buf[addrPos + addrLen + i]
-        }
-
-        // Copy the internal address into the destination address.
-        for (i in 0 until addrLen) {
-            buf[addrPos + addrLen + i] = intAddrBuf[i]
-        }
-
-        // Copy the internal port into the destination port.
-        setPortAt(intPort, buf, transportOffset + DESTINATION_PORT_OFFSET)
-
-        // Fix IP and Transport layer checksum.
-        fixPacketChecksum(buf, len, version, proto.toByte())
-    }
-}