Class BsdSocket

java.lang.Object

io.netty.channel.unix.FileDescriptor

io.netty.channel.unix.Socket

io.netty.channel.kqueue.BsdSocket

final class BsdSocket
extends Socket

A socket which provides access BSD native methods.

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	APPLE_SND_LOW_AT_MAX
(package private) static final int	BSD_SND_LOW_AT_MAX
private static final int	FREEBSD_SND_LOW_AT_MAX
private static final int	UNSPECIFIED_SOURCE_INTERFACE	The `endpoints` structure passed to `connectx(2)` has an optional "source interface" field, which is the index of the network interface to use.

Fields inherited from class Socket

ipv6, UDS_SUN_PATH_SIZE

Constructor Summary

Constructors

Constructor	Description
BsdSocket(int fd)

Method Summary

Modifier and Type	Method	Description
private static int	connectx(int socketFd, int sourceInterface, boolean sourceIPv6, byte[] sourceAddress, int sourceScopeId, int sourcePort, boolean destinationIPv6, byte[] destinationAddress, int destinationScopeId, int destinationPort, int flags, long iovAddress, int iovCount, int iovDataLength)
(package private) int	connectx(InetSocketAddress source, InetSocketAddress destination, IovArray data, boolean tcpFastOpen)	Establish a connection to the given destination address, and send the given data to it.
(package private) AcceptFilter	getAcceptFilter()
private static String[]	getAcceptFilter(int fd)
(package private) PeerCredentials	getPeerCredentials()
private static PeerCredentials	getPeerCredentials(int fd)
(package private) int	getSndLowAt()
private static int	getSndLowAt(int fd)
private static int	getTcpNoPush(int fd)
boolean	isTcpFastOpen()
private static int	isTcpFastOpen(int fd)
(package private) boolean	isTcpNoPush()
static BsdSocket	newSocketDgram()
static BsdSocket	newSocketDgram(InternetProtocolFamily protocol)
static BsdSocket	newSocketDomain()
static BsdSocket	newSocketDomainDgram()
static BsdSocket	newSocketStream()
static BsdSocket	newSocketStream(InternetProtocolFamily protocol)
private static long	sendFile(int socketFd, DefaultFileRegion src, long baseOffset, long offset, long length)
(package private) long	sendFile(DefaultFileRegion src, long baseOffset, long offset, long length)
private static void	setAcceptFilter(int fd, String filterName, String filterArgs)
(package private) void	setAcceptFilter(AcceptFilter acceptFilter)
(package private) void	setSndLowAt(int lowAt)
private static void	setSndLowAt(int fd, int lowAt)
void	setTcpFastOpen(boolean enableTcpFastOpen)
private static void	setTcpFastOpen(int fd, int enableFastOpen)
(package private) void	setTcpNoPush(boolean tcpNoPush)
private static void	setTcpNoPush(int fd, int tcpNoPush)

Methods inherited from class Socket

accept, bind, connect, disconnect, finishConnect, getIntOpt, getRawOpt, getReceiveBufferSize, getSendBufferSize, getSoError, getSoLinger, getTrafficClass, initialize, isBroadcast, isInputShutdown, isIPv6Preferred, isKeepAlive, isOutputShutdown, isReuseAddress, isReusePort, isShutdown, isTcpNoDelay, listen, localAddress, localDomainSocketAddress, newSocketDgram0, newSocketDgram0, newSocketDgram0, newSocketDomain0, newSocketDomainDgram0, newSocketStream0, newSocketStream0, newSocketStream0, recv, recvAddress, recvFd, recvFrom, recvFromAddress, recvFromAddressDomainSocket, recvFromDomainSocket, remoteAddress, remoteDomainSocketAddress, send, sendAddress, sendFd, sendTo, sendTo, sendToAddress, sendToAddress, sendToAddressDomainSocket, sendToAddresses, sendToAddresses, sendToAddressesDomainSocket, sendToDomainSocket, setBroadcast, setIntOpt, setKeepAlive, setRawOpt, setReceiveBufferSize, setReuseAddress, setReusePort, setSendBufferSize, setSoLinger, setTcpNoDelay, setTrafficClass, shouldUseIpv6, shutdown, shutdown, toString, useIpv6

Methods inherited from class FileDescriptor

close, equals, from, from, hashCode, intValue, isOpen, markClosed, pipe, read, readAddress, write, writeAddress, writev, writevAddresses

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

APPLE_SND_LOW_AT_MAX

private static final int APPLE_SND_LOW_AT_MAX

See Also:

• Constant Field Values

FREEBSD_SND_LOW_AT_MAX

private static final int FREEBSD_SND_LOW_AT_MAX

See Also:

• Constant Field Values

BSD_SND_LOW_AT_MAX

static final int BSD_SND_LOW_AT_MAX

UNSPECIFIED_SOURCE_INTERFACE

private static final int UNSPECIFIED_SOURCE_INTERFACE

The `endpoints` structure passed to `connectx(2)` has an optional "source interface" field, which is the index of the network interface to use. According to `if_nametoindex(3)`, the value 0 is used when no interface is specified.

See Also:

• Constant Field Values

Constructor Details

BsdSocket

BsdSocket(int fd)

Method Details

setAcceptFilter

void setAcceptFilter(AcceptFilter acceptFilter)
              throws IOException

Throws:

IOException

setTcpNoPush

void setTcpNoPush(boolean tcpNoPush)
           throws IOException

Throws:

IOException

setSndLowAt

void setSndLowAt(int lowAt)
          throws IOException

Throws:

IOException

setTcpFastOpen

public void setTcpFastOpen(boolean enableTcpFastOpen)
                    throws IOException

Throws:

IOException

isTcpNoPush

boolean isTcpNoPush()
             throws IOException

Throws:

IOException

getSndLowAt

int getSndLowAt()
         throws IOException

Throws:

IOException

getAcceptFilter

AcceptFilter getAcceptFilter()
                      throws IOException

Throws:

IOException

isTcpFastOpen

public boolean isTcpFastOpen()
                      throws IOException

Throws:

IOException

getPeerCredentials

PeerCredentials getPeerCredentials()
                            throws IOException

Throws:

IOException

sendFile

long sendFile(DefaultFileRegion src,
 long baseOffset,
 long offset,
 long length)
       throws IOException

Throws:

IOException

connectx

int connectx(InetSocketAddress source,
 InetSocketAddress destination,
 IovArray data,
 boolean tcpFastOpen)
      throws IOException

Establish a connection to the given destination address, and send the given data to it. Note: This method relies on the connectx(2) system call, which is MacOS specific.

Parameters:

source - the source address we are connecting from.

destination - the destination address we are connecting to.

data - the data to copy to the kernel-side socket buffer.

tcpFastOpen - if true, set the flags needed to enable TCP FastOpen connecting.

Returns:

The number of bytes copied to the kernel-side socket buffer, or the number of bytes sent to the destination. This number is negative if connecting is left in an in-progress state, or positive if the connection was immediately established.

Throws:

IOException - if an IO error occurs, if the data is too big to send in one go, or if the system call is not supported on your platform.

newSocketStream

public static BsdSocket newSocketStream()

newSocketStream

public static BsdSocket newSocketStream(InternetProtocolFamily protocol)

newSocketDgram

public static BsdSocket newSocketDgram()

newSocketDgram

public static BsdSocket newSocketDgram(InternetProtocolFamily protocol)

newSocketDomain

public static BsdSocket newSocketDomain()

newSocketDomainDgram

public static BsdSocket newSocketDomainDgram()

sendFile

private static long sendFile(int socketFd,
 DefaultFileRegion src,
 long baseOffset,
 long offset,
 long length)
                      throws IOException

Throws:

IOException

connectx

private static int connectx(int socketFd,
 int sourceInterface,
 boolean sourceIPv6,
 byte[] sourceAddress,
 int sourceScopeId,
 int sourcePort,
 boolean destinationIPv6,
 byte[] destinationAddress,
 int destinationScopeId,
 int destinationPort,
 int flags,
 long iovAddress,
 int iovCount,
 int iovDataLength)

Returns:

If successful, zero or positive number of bytes transfered, otherwise negative errno.

getAcceptFilter

private static String[] getAcceptFilter(int fd)
                                 throws IOException

Throws:

IOException

getTcpNoPush

private static int getTcpNoPush(int fd)
                         throws IOException

Throws:

IOException

getSndLowAt

private static int getSndLowAt(int fd)
                        throws IOException

Throws:

IOException

isTcpFastOpen

private static int isTcpFastOpen(int fd)
                          throws IOException

Throws:

IOException

getPeerCredentials

private static PeerCredentials getPeerCredentials(int fd)
                                           throws IOException

Throws:

IOException

setAcceptFilter

private static void setAcceptFilter(int fd,
 String filterName,
 String filterArgs)
                             throws IOException

Throws:

IOException

setTcpNoPush

private static void setTcpNoPush(int fd,
 int tcpNoPush)
                          throws IOException

Throws:

IOException

setSndLowAt

private static void setSndLowAt(int fd,
 int lowAt)
                         throws IOException

Throws:

IOException

setTcpFastOpen

private static void setTcpFastOpen(int fd,
 int enableFastOpen)
                            throws IOException

Throws:

IOException