/**
* Creates a new socket that is not bound to any local address/port and is not connected to any
* remote address/port. The stream parameter will be ignored since PlainSocketImpl always is a
* stream socket. Datagram sockets are handled by PlainDatagramSocketImpl.
*
* @param stream <code>true</code> for stream sockets, <code>false</code> for datagram sockets
*/
protected synchronized void create(boolean stream) throws IOException {
channel = new SocketChannelImpl(false);
VMChannel vmchannel = channel.getVMChannel();
vmchannel.initSocket(stream);
channel.configureBlocking(true);
impl.getState().setChannelFD(vmchannel.getState());
}
/**
* Returns the current setting of the specified option. The Object returned will be an Integer for
* options that have integer values. The option_id is one of the defined constants in this
* interface.
*
* @param optionId the option identifier
* @return the current value of the option
* @throws SocketException if an error occurs
*/
public Object getOption(int optionId) throws SocketException {
if (optionId == SO_BINDADDR) {
try {
return channel.getVMChannel().getLocalAddress().getAddress();
} catch (IOException ioe) {
SocketException se = new SocketException();
se.initCause(ioe);
throw se;
}
}
// This filters options which are invalid for TCP.
switch (optionId) {
case SO_LINGER:
case IP_MULTICAST_LOOP:
case SO_BROADCAST:
case SO_KEEPALIVE:
case SO_OOBINLINE:
case TCP_NODELAY:
case IP_TOS:
case SO_RCVBUF:
case SO_SNDBUF:
case SO_TIMEOUT:
case SO_REUSEADDR:
return impl.getOption(optionId);
default:
throw new SocketException("Unrecognized TCP option: " + optionId);
}
}
public InetSocketAddress getLocalAddress() {
if (channel == null) return null;
try {
return channel.getVMChannel().getLocalAddress();
} catch (IOException ioe) {
return null;
}
}
/* (non-Javadoc)
* @see java.net.SocketImpl#getLocalPort()
*/
protected int getLocalPort() {
if (channel == null) return -1;
try {
InetSocketAddress local = channel.getVMChannel().getLocalAddress();
if (local == null) return -1;
return local.getPort();
} catch (IOException ioe) {
return -1;
}
}
/* (non-Javadoc)
* @see java.net.SocketImpl#getPort()
*/
protected int getPort() {
if (channel == null) return -1;
try {
InetSocketAddress remote = channel.getVMChannel().getPeerAddress();
if (remote == null) return -1;
return remote.getPort();
} catch (IOException ioe) {
return -1;
}
}
/**
* Connects to the remote socket address with a specified timeout.
*
* @param address the remote address to connect to
* @param timeout the timeout to use for this connect, 0 means infinite.
* @throws IOException If an error occurs
*/
protected synchronized void connect(SocketAddress address, int timeout) throws IOException {
if (channel == null) create(true);
boolean connected = channel.connect(address, timeout);
if (!connected) throw new SocketTimeoutException("connect timed out");
// Using the given SocketAddress is important to preserve
// hostnames given by the caller.
InetSocketAddress addr = (InetSocketAddress) address;
this.address = addr.getAddress();
this.port = addr.getPort();
}
/**
* Accepts a new connection on this socket and returns in in the passed in SocketImpl.
*
* @param impl The SocketImpl object to accept this connection.
*/
protected synchronized void accept(SocketImpl impl) throws IOException {
if (channel == null) create(true);
if (!(impl instanceof PlainSocketImpl))
throw new IOException("incompatible SocketImpl: " + impl.getClass().getName());
PlainSocketImpl that = (PlainSocketImpl) impl;
VMChannel c = channel.getVMChannel().accept();
that.impl.getState().setChannelFD(c.getState());
that.channel = new SocketChannelImpl(c);
that.setOption(SO_REUSEADDR, Boolean.TRUE);
// Reset the inherited timeout.
that.setOption(SO_TIMEOUT, Integer.valueOf(0));
}
/* (non-Javadoc)
* @see java.net.SocketImpl#getInetAddress()
*/
protected InetAddress getInetAddress() {
if (channel == null) return null;
try {
InetSocketAddress remote = channel.getVMChannel().getPeerAddress();
if (remote == null) return null;
// To mimic behavior of the RI the InetAddress instance which was
// used to establish the connection is returned instead of one that
// was created by the native layer (this preserves exact hostnames).
if (address != null) return address;
return remote.getAddress();
} catch (IOException ioe) {
return null;
}
}
public VMChannel getVMChannel() {
if (channel == null) return null;
return channel.getVMChannel();
}
/**
* Returns the number of bytes that the caller can read from this socket without blocking.
*
* @return the number of readable bytes before blocking
* @throws IOException if an error occurs
*/
protected int available() throws IOException {
if (channel == null) throw new SocketException("not connected");
return channel.getVMChannel().available();
}
/**
* Binds to the specified port on the specified addr. Note that this addr must represent a local
* IP address. **** How bind to INADDR_ANY? ****
*
* @param addr the address to bind to
* @param port the port number to bind to
* @throws IOException if an error occurs
*/
protected synchronized void bind(InetAddress addr, int port) throws IOException {
if (channel == null) create(true);
impl.bind(new InetSocketAddress(addr, port));
localport = channel.getVMChannel().getLocalAddress().getPort();
}