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Add Subnet iteration #10

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Add Subnet iteration #10

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35 changes: 28 additions & 7 deletions src/main/net/sourceforge/jtds/jdbc/SharedSocket.java
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Original file line number Diff line number Diff line change
Expand Up @@ -25,10 +25,12 @@
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.NetworkInterface;
import java.net.Socket;
import java.net.SocketException;
import java.net.SocketTimeoutException;
import java.net.UnknownHostException;
import java.util.LinkedList;
import java.util.concurrent.ConcurrentHashMap;
Expand All @@ -37,7 +39,7 @@

import javax.net.SocketFactory;

import net.sourceforge.jtds.ssl.*;
import net.sourceforge.jtds.ssl.SocketFactories;
import net.sourceforge.jtds.util.Logger;

/**
Expand Down Expand Up @@ -275,18 +277,37 @@ private Socket createSocketForJDBC3( JtdsConnection connection ) throws IOExcept
final String bindAddress = connection.getBindAddress();
final int loginTimeout = connection.getLoginTimeout();

Socket socket = new Socket();
InetSocketAddress address = new InetSocketAddress( host, port );
InetSocketAddress bindSocketAddress = null;

// call Socket.bind(SocketAddress) if bindAddress parameter is set
if( bindAddress != null && ! bindAddress.isEmpty() )
{
socket.bind( new InetSocketAddress( bindAddress, 0 ) );
bindSocketAddress = new InetSocketAddress( bindAddress, 0 );
}

// establish connection
socket.connect( address, loginTimeout * 1000 );
return socket;
InetAddress[] addresses = InetAddress.getAllByName(host);
String exception = "";

int timeout = loginTimeout * 100 / addresses.length;

for (int i = 0, length = addresses.length; i < length; i++) {
InetAddress address = addresses[i];

Socket socket = new Socket();
if (bindAddress != null) {
socket.bind(bindSocketAddress);
}

InetSocketAddress socketAddress = new InetSocketAddress(address, port);
try {
socket.connect(socketAddress, timeout);
return socket;
} catch (SocketTimeoutException e) {
exception = "Unable to connect to " + address.getHostAddress() + ", " + e.getMessage() + ";";
}
}

throw new IOException(exception);
}

String getMAC()
Expand Down