322f75c5a2
Motivation: This fixes a bug that would result in an `io.netty.channel.unix.Errors$NativeIoException: connectx(..) failed: Address family not supported by protocol family` error. This happens when the connecting socket is configured to use IPv6 but the address being connected to is IPv4. This can occur because, for instance, Netty and `InetAddress.getLoopbackAddress()` have different preferences for IPv6 vs. IPv4. Modification: Pass the correct ipv6 or ipv4 flags to connectx, depending on whether the socket was created for AF_INET or AF_INET6, rather than relying on the IP version of the destination address. Result: No more issue with TCP FastOpen on MacOS when using addresses of the "wrong" IP version.
84 lines
2.8 KiB
Java
84 lines
2.8 KiB
Java
/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.channel.unix.tests;
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import io.netty.channel.unix.DomainSocketAddress;
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import io.netty.util.internal.PlatformDependent;
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import java.io.File;
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import java.io.IOException;
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import java.lang.reflect.Method;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.SocketAddress;
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import static org.junit.jupiter.api.Assumptions.assumeTrue;
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public final class UnixTestUtils {
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private static final Object INET_LOOPBACK_UNAVAILABLE = new Object();
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private static volatile Object inetLoopbackCache;
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/**
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* @deprecated Use {@link #newDomainSocketAddress()} instead.
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*/
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@Deprecated
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public static DomainSocketAddress newSocketAddress() {
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return newDomainSocketAddress();
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}
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public static DomainSocketAddress newDomainSocketAddress() {
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try {
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File file;
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do {
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file = PlatformDependent.createTempFile("NETTY", "UDS", null);
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if (!file.delete()) {
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throw new IOException("failed to delete: " + file);
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}
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} while (file.getAbsolutePath().length() > 128);
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return new DomainSocketAddress(file);
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} catch (IOException e) {
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throw new IllegalStateException(e);
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}
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}
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/**
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* The JDK method may produce IPv4 loopback addresses where {@link io.netty.util.NetUtil#LOCALHOST} might be an
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* IPv6 addresses.
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* This difference can stress the system in different ways that are important to test.
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*/
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public static SocketAddress newInetLoopbackSocketAddress() {
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Object loopback = inetLoopbackCache;
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if (loopback == null) {
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inetLoopbackCache = loopback = getLoopbackAddress();
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}
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assumeTrue(loopback != INET_LOOPBACK_UNAVAILABLE, "InetAddress.getLoopbackAddress() is not available");
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return new InetSocketAddress((InetAddress) loopback, 0);
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}
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private static Object getLoopbackAddress() {
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try {
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Method method = InetAddress.class.getMethod("getLoopbackAddress");
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return method.invoke(null);
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} catch (Exception ignore) {
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return INET_LOOPBACK_UNAVAILABLE;
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}
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}
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private UnixTestUtils() { }
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}
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