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8194298: Add support for per Socket configuration of TCP keepalive

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Reviewed-by: chegar, clanger, igerasim, alanb
This commit is contained in:
Vyom Tewari 2018-05-30 16:36:35 +05:30
parent 611c72e5bc
commit 6a48db9cf6
20 changed files with 815 additions and 48 deletions
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30
src/java.base/share/classes/sun/net/ext/ExtendedSocketOptions.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -30,6 +30,7 @@ import java.net.SocketException;
import java.net.SocketOption;
import java.util.Collections;
import java.util.Set;
import java.util.stream.Collectors;
/**
* Defines the infrastructure to support extended socket options, beyond those
@ -40,6 +41,9 @@ import java.util.Set;
*/
public abstract class ExtendedSocketOptions {
public static final short SOCK_STREAM = 1;
public static final short SOCK_DGRAM = 2;
private final Set<SocketOption<?>> options;
/** Tells whether or not the option is supported. */
@ -50,6 +54,30 @@ public abstract class ExtendedSocketOptions {
/** Return the, possibly empty, set of extended socket options available. */
public final Set<SocketOption<?>> options() { return options; }
public static final Set<SocketOption<?>> options(short type) {
return getInstance().options0(type);
}
private Set<SocketOption<?>> options0(short type) {
Set<SocketOption<?>> extOptions = null;
switch (type) {
case SOCK_DGRAM:
extOptions = options.stream()
.filter((option) -> !option.name().startsWith("TCP_"))
.collect(Collectors.toUnmodifiableSet());
break;
case SOCK_STREAM:
extOptions = options.stream()
.filter((option) -> !option.name().startsWith("UDP_"))
.collect(Collectors.toUnmodifiableSet());
break;
default:
//this will never happen
throw new IllegalArgumentException("Invalid socket option type");
}
return extOptions;
}
/** Sets the value of a socket option, for the given socket. */
public abstract void setOption(FileDescriptor fd, SocketOption<?> option, Object value)
throws SocketException;