public static void printSocketParameters(Socket cl) throws SocketException {
boolean SO_KEEPALIVE = cl.getKeepAlive();
boolean TCP_NODELAY = cl.getTcpNoDelay();
int SO_LINGER = cl.getSoLinger();
int SO_TIMEOUT = cl.getSoTimeout();
int SO_RCVBUF = cl.getReceiveBufferSize();
int SO_SNDBUF = cl.getSendBufferSize();
int trafficClassVal = cl.getTrafficClass();
/*
0 <= trafficClassVal <= 255
IPTOS_LOWCOST (0x02)
IPTOS_RELIABILITY (0x04)
IPTOS_THROUGHPUT (0x08)
IPTOS_LOWDELAY (0x10)
*/
int remotePort = cl.getPort();
int localPort = cl.getLocalPort();
String localIP = getIPstr(cl.getLocalAddress());
String remoteIP = getIPstr(cl.getInetAddress());
System.out.println("Socket Paramaters :");
System.out.println("SO_KEEPAILVE = " + SO_KEEPALIVE + " TCP_NODELAY = " + TCP_NODELAY);
System.out.println("SO_LINGER = " + SO_LINGER + " SO_TIMEOUT = " + SO_TIMEOUT);
System.out.println("SO_RCVBUF = " + SO_RCVBUF + " SO_SNDBUF = " + SO_SNDBUF);
System.out.println("Traffic Class = " + trafficClassVal);
System.out.println("Local Address = " + localIP + ":" + localPort);
System.out.println("Remote Address = " + remoteIP + ":" + remotePort);
}
@Override
public int getTrafficClass() {
try {
return socket.getTrafficClass();
} catch (SocketException e) {
throw new ChannelException(e);
}
}
/**
* @param sock The socket on which to set the Traffic Class.
* @return Whether or not the Traffic Class was set on the given socket.
* @throws SocketException if the system does not support setting the Traffic Class.
* @throws IllegalArgumentException if both the Differentiated Services and Type of Services
* transport options have been set on the same connection.
*/
private boolean setTrafficClass(Socket sock) throws SocketException, IllegalArgumentException {
if (sock == null || (!this.diffServChosen && !this.typeOfServiceChosen)) {
return false;
}
if (this.diffServChosen && this.typeOfServiceChosen) {
throw new IllegalArgumentException(
"Cannot set both the "
+ " Differentiated Services and Type of Services transport "
+ " options on the same connection.");
}
sock.setTrafficClass(this.trafficClass);
int resultTrafficClass = sock.getTrafficClass();
if (this.trafficClass != resultTrafficClass) {
// In the case where the user has specified the ECN bits (e.g. in
// Type of Service) but the system won't allow the ECN bits to be
// set or in the case where setting the traffic class failed for
// other reasons, emit a warning.
if ((this.trafficClass >> 2) == (resultTrafficClass >> 2)
&& (this.trafficClass & 3) != (resultTrafficClass & 3)) {
LOG.warn(
"Attempted to set the Traffic Class to "
+ this.trafficClass
+ " but the result Traffic Class was "
+ resultTrafficClass
+ ". Please check that your system "
+ "allows you to set the ECN bits (the first two bits).");
} else {
LOG.warn(
"Attempted to set the Traffic Class to "
+ this.trafficClass
+ " but the result Traffic Class was "
+ resultTrafficClass
+ ". Please check that your system "
+ "supports java.net.setTrafficClass.");
}
return false;
}
// Reset the guards that prevent both the Differentiated Services
// option and the Type of Service option from being set on the same
// connection.
this.diffServChosen = false;
this.typeOfServiceChosen = false;
return true;
}
@Override
public int getTrafficClass() throws SocketException {
return sock.getTrafficClass();
}
