public static void main(String[] args) throws IOException, InterruptedException {
boolean running = true;
// udp protocol over a socket.
DatagramSocket socket = new DatagramSocket();
while (running) {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String line = br.readLine();
String[] inputs = line.split(" ");
if (inputs.length < 2) {
System.out.println("Usage: username command id");
socket.close();
return;
}
byte[] byteArr = (inputs[0] + " " + inputs[1] + " " + inputs[2]).getBytes();
// send request
byte[] buf = new byte[256];
InetAddress address = InetAddress.getByName("localhost");
DatagramPacket packet = new DatagramPacket(byteArr, byteArr.length, address, 4445);
socket.send(packet);
// get response
packet = new DatagramPacket(buf, buf.length);
socket.receive(packet);
// display response
String received = new String(packet.getData(), 0, packet.getLength());
System.out.println("From server: " + received);
}
// socket.close();
}
// ---------------------------------------------------------
// decide whether two host names (h1, h2) refer to same IP
// ---------------------------------------------------------
public static boolean sameHost(String h1, String h2) {
try {
String a1 = InetAddress.getByName(h1).getHostAddress();
String a2 = InetAddress.getByName(h2).getHostAddress();
if (a1.equals(a2)) return true;
} catch (Exception e) {
System.out.println(e);
}
return false;
}
public boolean open(String addr, int port, String bindAddr) {
try {
ssdpMultiSock = new MulticastSocket(null);
ssdpMultiSock.setReuseAddress(true);
InetSocketAddress bindSockAddr = new InetSocketAddress(port);
ssdpMultiSock.bind(bindSockAddr);
ssdpMultiGroup = new InetSocketAddress(InetAddress.getByName(addr), port);
ssdpMultiIf = NetworkInterface.getByInetAddress(InetAddress.getByName(bindAddr));
ssdpMultiSock.joinGroup(ssdpMultiGroup, ssdpMultiIf);
} catch (Exception e) {
Debug.warning(e);
return false;
}
return true;
}
public static void main(String args[]) throws Exception {
// Making a text file
String filename =
"C:\\Users\\S.S. Mehta\\Desktop\\Codes\\ComputerNetworks\\CN_project\\CN_project\\test3.txt";
makeTextFile(filename);
// Reading the file and puttin it in buffer
BufferedReader in = new BufferedReader(new FileReader(filename));
char[] c1 = new char[PACKET_SIZE];
c1 = readData(in);
displayPacket(c1);
// Step3 - making a socket , makeing a packet with inet address and sending it
byte[] buffer = new byte[PACKET_SIZE];
DatagramSocket skt = new DatagramSocket(PORT_NUMBER);
DatagramPacket request = new DatagramPacket(buffer, buffer.length);
// stop till you receive
wait(skt, request);
System.out.println("On server side \nrequest received from Slient");
// making a packet with an inet address -
InetAddress host = InetAddress.getByName("localhost");
DatagramPacket reply = makePacket(c1, host);
// Sending reply packet
System.out.println("Sending reply packet to client");
Thread.sleep(5000);
skt.send(reply);
// closing the socket
skt.close();
}
public static void main(String[] args) {
int port = 5555;
DatagramSocket socket;
socket = null;
try {
socket = new DatagramSocket(port);
socket.setBroadcast(true);
socket.connect(InetAddress.getByName("255.255.255.255"), 5555);
} catch (Exception e) {
System.err.println("Connection failed. " + e.getMessage());
}
while (true) {
String message = "hey";
byte[] buf = message.getBytes();
DatagramPacket packet = new DatagramPacket(buf, buf.length);
try {
socket.send(packet);
} catch (Exception e) {
System.err.println("Sending failed. " + e.getMessage());
}
}
}
Target(String host) {
try {
address = new InetSocketAddress(InetAddress.getByName(host), 80);
} catch (IOException x) {
failure = x;
}
}
/** 启动初始化，他确定网络中有多少个其它UDPBase和相关的信息 */
public void initNet() throws UDPBaseException {
try {
mainThread = new SoleThread(this);
localIP = InetAddress.getLocalHost().getHostAddress();
int i = localIP.lastIndexOf('.');
BROADCAST_ADDR = localIP.substring(0, i) + ".255";
// System.out.println ("lip=="+localIP) ;
// sendSocket = new DatagramSocket () ;
// recvSocket = new MulticastSocket (RECV_PORT) ;
recvSocket = new DatagramSocket(RECV_PORT);
sendSocket = recvSocket;
// recvAckSocket = new MulticastSocket (RECV_ACK_PORT) ;
group = InetAddress.getByName(BROADCAST_ADDR);
// recvSocket.joinGroup (group) ;
// recvAckSocket.joinGroup (group) ;
procMsgThd = new ProcMsgThd();
procMsgThd.start();
//
mainThread.start();
} catch (Exception e) {
e.printStackTrace();
throw new UDPBaseException("UDPBase init() error=\n" + e.toString());
}
}
@Override
public DatagramChannel bind(SocketAddress local) throws IOException {
synchronized (readLock) {
synchronized (writeLock) {
synchronized (stateLock) {
ensureOpen();
if (localAddress != null) throw new AlreadyBoundException();
InetSocketAddress isa;
if (local == null) {
// only Inet4Address allowed with IPv4 socket
if (family == StandardProtocolFamily.INET) {
isa = new InetSocketAddress(InetAddress.getByName("0.0.0.0"), 0);
} else {
isa = new InetSocketAddress(0);
}
} else {
isa = Net.checkAddress(local);
// only Inet4Address allowed with IPv4 socket
if (family == StandardProtocolFamily.INET) {
InetAddress addr = isa.getAddress();
if (!(addr instanceof Inet4Address)) throw new UnsupportedAddressTypeException();
}
}
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkListen(isa.getPort());
}
Net.bind(family, fd, isa.getAddress(), isa.getPort());
localAddress = Net.localAddress(fd);
}
}
}
return this;
}
/**
* Konstruktor
*
* @param configFile Jmeno konfiguracniho souboru
*/
public Server(String configFile) {
setServerConfig(new ServerConfig(configFile));
setPort(getServerConfig().getPort());
try {
setBindAddress(InetAddress.getByName(getServerConfig().getBindAddress()));
} catch (UnknownHostException e) {
System.err.println("Bind adresa neni platna!");
System.exit(-1);
}
try {
setServerSocket(new ServerSocket(getPort(), 0, getBindAddress()));
} catch (IOException e) {
System.err.println("Chyba startu ServerSocketu");
System.exit(-1);
}
System.out.println("Server spusten");
clients = new Hashtable<String, ServerThread>();
boolean running = true;
while (running) {
try {
accept();
} catch (IOException e) {
System.err.println("Chyba acceptu");
running = false;
}
}
}
// Check for an IP, since this seems to be safer to return then a plain name
private String getIpIfPossible(String pHost) {
try {
InetAddress address = InetAddress.getByName(pHost);
return address.getHostAddress();
} catch (UnknownHostException e) {
return pHost;
}
}
public InetAddress getExternalIpAddressHTTP(boolean v6) throws Exception {
Map reply = executeHTTP(new HashMap(), v6);
byte[] address = (byte[]) reply.get("source_ip_address");
return (InetAddress.getByName(new String(address)));
}
public InetAddress getExternalIpAddressUDP(InetAddress bind_ip, int bind_port, boolean v6)
throws Exception {
Map reply = executeUDP(new HashMap(), bind_ip, bind_port, v6);
byte[] address = (byte[]) reply.get("source_ip_address");
return (InetAddress.getByName(new String(address)));
}
/**
* Sends a leave message to the multicast group and leaves it. The <CODE>DiscoveryResponder</CODE>
* leaves its multicast group. This method has no effect if the <CODE>DiscoveryResponder</CODE> is
* <CODE>OFFLINE</CODE> or <CODE>STOPPING</CODE> or <CODE>STARTING</CODE>.
*/
public void stop() {
if (state == ONLINE) {
changeState(STOPPING);
// ------------------------
// Stop corresponding thread
// ------------------------
responder.stopRequested = true;
synchronized (responder.interrupted) {
if (!responder.interrupted.booleanValue()) {
responderThread.interrupt();
}
}
// Fix for cases when the interrupt does not work (Windows NT)
try {
MulticastSocket ms = new MulticastSocket(multicastPort);
// NPCTE fix for bugId 4499338, esc 0, 04 Sept 2001
if (usrInet != null) {
ms.setInterface(usrInet);
if (logger.finerOn()) {
logger.finer("stop ", "use the interface " + usrInet);
}
}
// end of NPCTE fix for bugId 4499338
InetAddress group = InetAddress.getByName(multicastGroup);
ms.joinGroup(group);
ms.send(new DatagramPacket(new byte[1], 1, group, multicastPort));
ms.leaveGroup(group);
} catch (Exception e) {
if (logger.finerOn()) {
logger.finer(
"stop ",
"Unexpected exception occurred trying to send empty message " + e.getMessage());
}
}
// ------------------------
// free 'remained' allocated resource
// ------------------------
responder = null;
System.runFinalization();
// ----------------
// Update state
// ----------------
// changeState(OFFLINE) ;
} else {
if (logger.finerOn()) {
logger.finer("stop ", "Responder is not ONLINE");
}
}
}
public static InetAddress arrayToInetAddress(byte[] addr, int offset) {
int[] i = byteToIntArray(addr, offset, 4);
String s = i[0] + "." + i[1] + "." + i[2] + "." + i[3];
try {
return InetAddress.getByName(s);
} catch (UnknownHostException e) {
throw new RuntimeException("unknown host: " + s);
}
}
public byte[] getRAddr() {
try {
InetAddress addr = InetAddress.getByName(host);
return addr.getAddress();
} catch (UnknownHostException e) {
System.err.println("NCCPConnection::getRAddr Don't know about host: ");
return null;
}
}
public static String inaddrString(String s) {
InetAddress address;
try {
address = InetAddress.getByName(s);
} catch (UnknownHostException e) {
return null;
}
return inaddrString(address);
}
/**
* Creates a SimpleResolver that will query the specified host
*
* @exception UnknownHostException Failure occurred while finding the host
*/
public SimpleResolver(String hostname) throws UnknownHostException {
if (hostname == null) {
hostname = ResolverConfig.getCurrentConfig().server();
if (hostname == null) hostname = defaultResolver;
}
InetAddress addr;
if (hostname.equals("0")) addr = InetAddress.getLocalHost();
else addr = InetAddress.getByName(hostname);
address = new InetSocketAddress(addr, DEFAULT_PORT);
}
/** Generic constructor for the name service interface */
public LeetActive(String svc_host, int svc_port, int portNum) {
try {
nameServer = new DatagramSocket();
nameServer.setSoTimeout(3000);
nameServer.connect(InetAddress.getByName(svc_host), svc_port);
} catch (Exception e) {
System.err.println("LA " + e);
}
this.portNum = portNum;
hostList = new ArrayList();
}
public void Connect() throws IOException {
try {
InetAddress addr = InetAddress.getByName(server);
Socket socket = new Socket(addr, port);
in = new InputStreamReader(socket.getInputStream());
out = new OutputStreamWriter(socket.getOutputStream());
char c[] = new char[LINE_LENGTH];
boolean authed = false;
while (true) {
if (in.read(c) > 0) {
String msg = new String(c).trim();
if (!authed) {
if (msg.endsWith("No Ident response")) {
System.out.println("...sending identity...");
out.write(String.format("NICK %s\r\n", nickname));
out.write(String.format("USER %s %s %s :s\r\n", nickname, host, server, realname));
out.flush();
authed = true;
for (IRCAuthListener a : authListeners) {
a.afterAuthentication(this);
}
}
}
if (msg.startsWith("PING")) {
System.out.println("Sending pong...");
out.write("PONG\r\n");
out.flush();
}
for (IRCRawDataListener d : rawDataListeners) {
d.processRawData(this, msg);
}
c = new char[LINE_LENGTH];
} else {
System.out.println("Oops, if you see this we just got kicked or connection timed out...");
break;
}
}
} catch (IOException ioe) {
throw (ioe);
}
}
protected void sendBeacon() {
if (is_enabled) {
try {
byte[] bytes = encodeBeacon(true, tcp_port);
control_socket.send(
new DatagramPacket(
bytes, bytes.length, InetAddress.getByName("255.255.255.255"), CONTROL_PORT));
} catch (Throwable e) {
log("Failed to send beacon", e);
}
}
}
public void setProperty(String prop, String value) {
if (PORT.equals(prop)) {
setPort(value);
} else if (HANDLER.equals(prop)) {
try {
Class chC = Class.forName(value);
con = (TcpConnectionHandler) chC.newInstance();
} catch (Exception ex) {
ex.printStackTrace();
}
} else if (INET.equals(prop)) {
try {
address = InetAddress.getByName(value);
} catch (Exception ex) {
}
}
}
private void checkLdapServer(ConfigGuideBean configGuideBean)
throws PwmOperationalException, IOException {
final Map<String, String> formData = configGuideBean.getFormData();
final String host = formData.get(PARAM_LDAP_HOST);
final int port = Integer.parseInt(formData.get(PARAM_LDAP_PORT));
if (Boolean.parseBoolean(formData.get(PARAM_LDAP_SECURE))) {
X509Utils.readRemoteCertificates(host, port);
} else {
InetAddress addr = InetAddress.getByName(host);
SocketAddress sockaddr = new InetSocketAddress(addr, port);
Socket sock = new Socket();
// this method will block for the defined number of milliseconds
int timeout = 2000;
sock.connect(sockaddr, timeout);
}
}
@Override
public void init(String keyspace) {
Iterator<InetAddress> hostiter = hosts.iterator();
while (hostiter.hasNext()) {
try {
// Query endpoint to ranges map and schemas from thrift
InetAddress host = hostiter.next();
Cassandra.Client client =
createThriftClient(
host.getHostAddress(), rpcPort, this.user, this.passwd, this.transportFactory);
setPartitioner(client.describe_partitioner());
Token.TokenFactory tkFactory = getPartitioner().getTokenFactory();
for (TokenRange tr : client.describe_ring(keyspace)) {
Range<Token> range =
new Range<>(
tkFactory.fromString(tr.start_token),
tkFactory.fromString(tr.end_token),
getPartitioner());
for (String ep : tr.endpoints) {
addRangeForEndpoint(range, InetAddress.getByName(ep));
}
}
String query =
String.format(
"SELECT * FROM %s.%s WHERE keyspace_name = '%s'",
Keyspace.SYSTEM_KS, SystemKeyspace.SCHEMA_COLUMNFAMILIES_CF, keyspace);
CqlResult result =
client.execute_cql3_query(
ByteBufferUtil.bytes(query), Compression.NONE, ConsistencyLevel.ONE);
for (CqlRow row : result.rows) {
CFMetaData metadata = CFMetaData.fromThriftCqlRow(row);
knownCfs.put(metadata.cfName, metadata);
}
break;
} catch (Exception e) {
if (!hostiter.hasNext())
throw new RuntimeException("Could not retrieve endpoint ranges: ", e);
}
}
}
private void checkLdapServer(ConfigGuideBean configGuideBean)
throws PwmOperationalException, IOException {
final Map<String, String> formData = configGuideBean.getFormData();
final String host = formData.get(PARAM_LDAP_HOST);
final int port = Integer.parseInt(formData.get(PARAM_LDAP_PORT));
{ // socket test
final InetAddress inetAddress = InetAddress.getByName(host);
final SocketAddress socketAddress = new InetSocketAddress(inetAddress, port);
final Socket socket = new Socket();
final int timeout = 2000;
socket.connect(socketAddress, timeout);
}
if (Boolean.parseBoolean(formData.get(PARAM_LDAP_SECURE))) {
X509Utils.readRemoteCertificates(host, port);
}
}
protected String getHost(boolean v6, String v6_address, String v4_address) {
if (v6) {
try {
return (InetAddress.getByName(v6_address).getHostAddress());
} catch (UnknownHostException e) {
try {
return (DNSUtils.getIPV6ByName(v6_address).getHostAddress());
} catch (UnknownHostException f) {
return (v6_address);
}
}
} else {
return (v4_address);
}
}
/**
* Determine if a host is reachable by attempting to resolve the host name, and then attempting to
* open a connection.
*
* @param hostName Name of the host to connect to.
* @return {@code true} if a the host is reachable, {@code false} if the host name cannot be
* resolved, or if opening a connection to the host fails.
*/
protected static boolean isHostReachable(String hostName) {
try {
// Assume host is unreachable if we can't get its dns entry without getting an exception
//noinspection ResultOfMethodCallIgnored
InetAddress.getByName(hostName);
} catch (UnknownHostException e) {
String message = Logging.getMessage("NetworkStatus.UnreachableTestHost", hostName);
Logging.verbose(message);
return false;
} catch (Exception e) {
String message = Logging.getMessage("NetworkStatus.ExceptionTestingHost", hostName);
Logging.verbose(message);
return false;
}
// Was able to get internet address, but host still might not be reachable because the address
// might have been
// cached earlier when it was available. So need to try something else.
URLConnection connection = null;
try {
URL url = new URL("http://" + hostName);
Proxy proxy = WWIO.configureProxy();
if (proxy != null) connection = url.openConnection(proxy);
else connection = url.openConnection();
connection.setConnectTimeout(2000);
connection.setReadTimeout(2000);
String ct = connection.getContentType();
if (ct != null) return true;
} catch (IOException e) {
String message = Logging.getMessage("NetworkStatus.ExceptionTestingHost", hostName);
Logging.info(message);
} finally {
if (connection instanceof HttpURLConnection) ((HttpURLConnection) connection).disconnect();
}
return false;
}
public static void main(String[] args) throws IOException {
MulticastSocket socket = new MulticastSocket(4446);
InetAddress address = InetAddress.getByName("230.0.0.1");
socket.joinGroup(address);
DatagramPacket packet;
// get a few quotes
for (int i = 0; i < 5; i++) {
byte[] buf = new byte[256];
packet = new DatagramPacket(buf, buf.length);
socket.receive(packet);
String received = new String(packet.getData(), 0, packet.getLength());
System.out.println("Quote of the Moment: " + received);
}
socket.leaveGroup(address);
socket.close();
}
public void initGroup() throws UDPBaseException {
try {
mainThread = new SoleThread(this);
sendSocket = new DatagramSocket();
recvSocket = new MulticastSocket(RECV_PORT);
// recvAckSocket = new MulticastSocket (RECV_ACK_PORT) ;
group = InetAddress.getByName(GROUP_BROADCAST_ADDR);
((MulticastSocket) recvSocket).joinGroup(group);
// recvAckSocket.joinGroup (group) ;
localIP = InetAddress.getLocalHost().getHostAddress();
procMsgThd = new ProcMsgThd();
procMsgThd.start();
//
mainThread.start();
bGroup = true;
} catch (Exception e) {
e.printStackTrace();
throw new UDPBaseException("UDPBase init() error=\n" + e.toString());
}
}
public void initVirtual(String virtualip) throws UDPBaseException {
if (virtualip == null) {
virtualip = "vip:" + System.currentTimeMillis();
}
try {
mainThread = new SoleThread(this);
sendSocket = new DatagramSocket();
recvSocket = new MulticastSocket(RECV_PORT);
// recvAckSocket = new MulticastSocket (RECV_ACK_PORT) ;
group = InetAddress.getByName(GROUP_BROADCAST_ADDR);
((MulticastSocket) recvSocket).joinGroup(group);
// recvAckSocket.joinGroup (group) ;
localIP = virtualip;
procMsgThd = new ProcMsgThd();
procMsgThd.start();
//
mainThread.start();
} catch (Exception e) {
e.printStackTrace();
throw new UDPBaseException("UDPBase init() error=\n" + e.toString());
}
}
public void run() {
do {
try {
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
File file = new File("time.txt");
FileWriter fw = new FileWriter(file);
Long start = 0l;
Long end = 0l;
BufferedWriter bw = new BufferedWriter(fw);
System.out.println("Enter the preferred choice");
System.out.println("1. REGISTER");
System.out.println("2. LEAVE");
System.out.println("3. SEARCH FOR RFC");
System.out.println("4. KEEPALIVE");
System.out.println("5. Do you want to EXIT");
System.out.println("*********************************************");
choice = Integer.parseInt(inFromUser.readLine());
// System.out.println(" Client requesting for connection");
clientSocket = new Socket("192.168.15.103", 6500);
BufferedReader inFromServer =
new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
PrintWriter outToServer =
new PrintWriter(new OutputStreamWriter(clientSocket.getOutputStream()), true);
// outToServer.println("Peer Requesting Connection");
switch (choice) {
case 4:
outToServer.println(
"KEEP ALIVE P2P-DI Cookieno "
+ cookie
+ " OS: "
+ System.getProperty("os.name")
+ " "
+ "v"
+ System.getProperty("os.version")
+ " USER: "******"user.name"));
System.out.println(inFromServer.readLine());
System.out.println("*********************************************");
break;
case 1:
try {
// System.out.println("Case 1 entered"); // testing
// statement
System.out.println("Please enter your IP addres");
ip = inFromUser.readLine();
outToServer.println(
"REG P2P-DI/1.1 -1 Portno 6789 Hostname "
+ ip
+ " OS: "
+ System.getProperty("os.name")
+ " "
+ "v"
+ System.getProperty("os.version")
+ " USER: "******"user.name"));
cookie = Integer.parseInt(inFromServer.readLine());
TTL = 7200;
System.out.println(inFromServer.readLine());
System.out.print("You are registered at time : ");
ct.currenttime();
System.out.println("Peer " + cookie); // peer cookie value
System.out.println("TTL Value :" + TTL);
System.out.println("*********************************************");
break;
} catch (Exception e) {
}
case 2:
// System.out.println("Case 2 entered"); testing statement
outToServer.println(
"LEAVE P2P-DI Cookieno "
+ cookie
+ " OS: "
+ System.getProperty("os.name")
+ " "
+ "v"
+ System.getProperty("os.version")
+ " USER: "******"user.name"));
// System.out.println("I am in peer"); testing statement
System.out.println(inFromServer.readLine());
System.out.println("*********************************************");
break;
case 3:
outToServer.println(
"PQUERY P2P-DI Cookieno "
+ cookie
+ " Portno 6789"
+ " OS: "
+ System.getProperty("os.name")
+ " "
+ "v"
+ System.getProperty("os.version")
+ " USER: "******"user.name"));
System.out.println("Which RFC number do you wish to have ?");
reqrfc = Integer.parseInt(inFromUser.readLine());
// System.out.println("Entered peer again");
// outToServer.println("KEEP ALIVE cookieno "+cookie);
String details = inFromServer.readLine();
String[] parray = details.split(" ");
int inactive = Integer.parseInt(parray[(parray.length - 1)]);
// System.out.println(darray.length);
if ((parray.length == 3) && (ip.equals(parray[1]))) {
System.out.println("P2P-DI No Active Peers available");
System.out.println("*********************************************");
} else {
System.out.println("****<POPULATING THE ACTIVE PEER LIST>****");
System.out.println();
System.out.println("The active peer list is as follows:");
System.out.println();
String[] darray = details.split(" ");
// System.out.println("Array length"+darray.length);
for (int i = 0; i < (darray.length - 2); i = i + 2) {
acthostname[j] = darray[i + 1];
System.out.println("Hostname :" + acthostname[j]);
actportno[j] = Integer.parseInt(darray[i + 2]);
System.out.println("Portno :" + actportno[j]);
System.out.println("*****************************");
j = j + 1;
}
System.out.println("Connecting to the active peers for its RFC Index");
for (int x = 0; x < j; x++) {
// System.out.println(ip);
if (!(acthostname[x].equals(ip))) {
System.out.println("Connecting to " + acthostname[x]);
Socket peersocket = new Socket(acthostname[x], 6791); // implement
// a for
// loop
BufferedReader inFromPeer =
new BufferedReader(new InputStreamReader(peersocket.getInputStream()));
PrintWriter outToPeer =
new PrintWriter(new OutputStreamWriter(peersocket.getOutputStream()), true);
outToPeer.println("RFCIndex");
// System.out.println(inFromServer.readLine());
// int searchrfc=Integer.parseInt(inFromUser.readLine());
// outToServer.println(searchrfc);
String rfcindex = inFromPeer.readLine(); // tell server to
// send rfc in
// string
String rfcarray[] = rfcindex.split(" ");
// System.out.println(rfcindex);
for (int i = 1; i < rfcarray.length; i = i + 4) {
trfcno[z] = Integer.parseInt(rfcarray[i]);
// System.out.println("RFC number " + trfcno[z]);
trfctitle[z] = rfcarray[i + 1];
// System.out.println("RFC Title " + trfctitle[z]);
tpeername[z] = rfcarray[i + 2];
// System.out.println("Peer Ip Address " + tpeername[z]);
tpTTL[z] = Integer.parseInt(rfcarray[i + 3]);
// System.out.println("TTL value :" + tpTTL[z]);
counter1 = counter1 + 1;
z = z + 1;
}
z = 0;
// if(arraybound==0)
// {
System.arraycopy(trfcno, 0, rfcno, counter2, trfcno.length);
System.arraycopy(trfctitle, 0, rfctitle, counter2, trfctitle.length);
System.arraycopy(tpeername, 0, peername, counter2, tpeername.length);
System.arraycopy(tpTTL, 0, pTTL, counter2, tpTTL.length);
z = 0;
counter2 = counter1;
counter1 = 0;
// arraybound=arraybound+1;
// }
System.out.println();
System.out.println();
System.out.println("*************************************************");
System.out.println("RFC Index received from the Peer");
// System.out.println();
System.out.println("\n-----------------------------------------");
System.out.println("RFC Index System - Display RFC Idex");
System.out.println("-------------------------------------------");
System.out.format(
"%10s%15s%15s%10s", "RFC No", "RFC Title", "Peer Name", "TTL Value");
System.out.println();
// StudentNode current = top;
// while (current != null){
// Student read = current.getStudentNode();
for (int i = 0; i < 60; i++) {
System.out.format(
"%10s%15s%15s%10s",
" " + rfcno[i], rfctitle[i], peername[i], " " + pTTL[i]);
System.out.println();
}
// This will output with a set number of character spaces
// per field, giving the list a table-like quality
// }
peersocket.close();
} // end of if
for (int i = 0; i < rfcno.length; i++) {
if (rfcno[i] == reqrfc) {
String taddress = InetAddress.getByName(peername[i]).toString();
String[] taddr = taddress.split("/");
InetAddress tproperaddress = InetAddress.getByName(taddr[1]);
// System.out.println("Inetaddress" + tproperaddress);
Socket peersocket1 = new Socket(tproperaddress, 6791); // implement
// a
// for
// loop
System.out.println("The connection to the Active Peer is establshed");
BufferedReader inFromP2P =
new BufferedReader(new InputStreamReader(peersocket1.getInputStream()));
PrintWriter outToP2P =
new PrintWriter(
new OutputStreamWriter(peersocket1.getOutputStream()), true);
System.out.println("Requested the RFC to the Active Peer Server");
start = System.currentTimeMillis();
outToP2P.println("GETRFC " + reqrfc);
// Socket socket = ;
try {
// Socket socket = null;
InputStream is = null;
FileOutputStream fos = null;
BufferedOutputStream bos = null;
int bufferSize = 0;
try {
is = peersocket1.getInputStream();
bufferSize = 64;
// System.out.println("Buffer size: " + bufferSize);
} catch (IOException ex) {
System.out.println("Can't get socket input stream. ");
}
try {
fos = new FileOutputStream("E:\\rfc" + reqrfc + "copy.txt");
bos = new BufferedOutputStream(fos);
} catch (FileNotFoundException ex) {
System.out.println("File not found. ");
}
byte[] bytes = new byte[bufferSize];
int count;
while ((count = is.read(bytes)) > 0) {
// System.out.println(count);
bos.write(bytes, 0, count);
}
System.out.println("P2P-DI 200 OK The RFC is copied");
end = System.currentTimeMillis();
System.out.println(
"Total Time to download file " + (end - start) + " milliseconds");
bos.flush();
bos.close();
is.close();
peersocket1.close();
break;
} catch (SocketException e) {
System.out.println("Socket exception");
}
} // end of if
else {
// System.out.println("No Peer with the required RFC could be found");
}
clientSocket.close();
// System.out.println("Connection closed");
bw.close();
fw.close();
} // end of inner for
} // end of outer for
System.out.println("Connection closed");
} // end of switch
} // end of else which checks the inactive conditions
} // end of try
catch (IOException ioe) {
System.out.println("IOException on socket listen: " + ioe);
ioe.printStackTrace();
}
} // end of do
while (choice != 5);
} // end of run
