Java Utililty Methods HTTP Port Find

List of utility methods to do HTTP Port Find

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Description

The list of methods to do HTTP Port Find are organized into topic(s).

Method

booleanisPortAvailable(int port)
Check if port is available 
ServerSocket serverSocket;
try {
    serverSocket = new ServerSocket();
} catch (IOException ex) {
    throw new IllegalStateException("Unable to create ServerSocket.", ex);
try {
    InetSocketAddress sa = new InetSocketAddress(port);
...
booleanisPortAvailable(int port)
See if a port is available for listening on by trying to listen on it and seeing if that works or fails. 
try {
    ServerSocket socket = new ServerSocket(port);
    socket.close();
    return true;
} catch (IOException e) {
    return false;
booleanisPortAvailable(int port)
is Port Available 
ServerSocket ss = null;
DatagramSocket ds = null;
try {
    ss = new ServerSocket(port);
    ss.setReuseAddress(true);
    ds = new DatagramSocket(port);
    ds.setReuseAddress(true);
    return true;
...
booleanisPortAvailable(int port)
is Port Available 
try (DatagramSocket udp = new DatagramSocket(port); ServerSocket tcp = new ServerSocket(port)) {
    tcp.setReuseAddress(true);
    udp.setReuseAddress(true);
    return true;
} catch (IOException ex) {
    return false;
booleanisPortAvailable(int port)
Checks to see if a specific port is available. 
if (port < MIN_PORT_NUMBER || port > MAX_PORT_NUMBER) {
    throw new IllegalArgumentException("Invalid start port: " + port);
ServerSocket ss = null;
DatagramSocket ds = null;
try {
    ss = new ServerSocket(port);
    ss.setReuseAddress(true);
...
booleanisPortAvailable(int port)
is Port Available 
if (port < 1 || port > 65535) {
    throw new IllegalArgumentException("Invalid start port: " + port);
try (ServerSocket ss = new ServerSocket(port); DatagramSocket ds = new DatagramSocket(port)) {
    ss.setReuseAddress(true);
    ds.setReuseAddress(true);
    return true;
} catch (IOException ignored) {
...
booleanisPortAvailable(int port)
Checks to see if a specific port is available. 
ServerSocket ss = null;
DatagramSocket ds = null;
try {
    ss = new ServerSocket(port);
    ss.setReuseAddress(true);
    ds = new DatagramSocket(port);
    ds.setReuseAddress(true);
    return true;
...
voidisPortAvailable(String host, int port)
is Port Available 
Socket s = new Socket();
s.bind(new InetSocketAddress(host, port));
s.close();
booleanisPortAvailable(String host, int port)
See if a port is available for listening on by trying connect to it and seeing if that works or fails 
try {
    Socket socket = new Socket(host, port);
    socket.close();
    return false;
} catch (IOException e) {
    return true;
booleanisPortAvailable(String host, int port)
is Port Available 
Socket socket = null;
boolean available = false;
try {
    socket = new Socket(host, port);
    available = true;
} catch (IOException e) {
} finally {
    if (socket != null) {
...