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

booleanisPortFree(String hostName, String port)
Checks whether the given port is free on the specified host NOTE: works properly only on local host 
try {
    return isPortFree(hostName, Integer.parseInt(port));
} catch (Exception e) {
    return false;
booleanisPortFreeClient(String hostName, int portNumber)
is Port Free Client 
try {
    if (hostName == null) {
        hostName = getHostName();
    Socket socket = new Socket(hostName, portNumber);
    OutputStream os = socket.getOutputStream();
    InputStream is = socket.getInputStream();
    os.close();
...
BooleanisPortInUse(final String host, final Integer port)
is Port In Use 
Boolean result = false;
try {
    (new Socket(host, port)).close();
    result = true;
} catch (IOException ex) {
return result;
booleanisPortInUse(int port)
Checks if the given port is already used 
if (port < 0 || port >= 65536) {
    return false;
try (ServerSocket socket = new ServerSocket(port)) {
    return false;
} catch (IOException e) {
    return true;
booleanisPortOnUse(int port)
is Port On Use 
boolean isUse = false;
ServerSocket serverSocket = null;
try {
    serverSocket = new ServerSocket(port);
    isUse = false;
} catch (IOException e) {
    e.printStackTrace();
    isUse = true;
...
booleanisPortOpen(int port)
is Port Open 
return isPortOpen(new InetSocketAddress("localhost", port));
booleanisPortOpen(int port, String host)
Check whether the provided port is open 
Socket socket = null;
boolean isPortOpen;
try {
    socket = new Socket(host, port);
    isPortOpen = socket.isConnected();
} catch (IOException e) {
    isPortOpen = false;
} finally {
...
booleanisPortOpen(String host, int port)
is Port Open 
InetSocketAddress socketAddress = new InetSocketAddress(host, port);
Socket socket = null;
try {
    socket = new Socket();
    socket.setReuseAddress(false);
    socket.setSoLinger(false, 1);
    socket.setSoTimeout(TIMEOUT_IN_MILLISECONDS);
    socket.connect(socketAddress, TIMEOUT_IN_MILLISECONDS);
...
booleanisPortUsed(final int portNumber, final String host)
is Port Used 
boolean isPortUsed;
ServerSocket serverSocket = null;
try {
    InetAddress inetAddress = InetAddress.getByName(host);
    serverSocket = new ServerSocket(portNumber, 50, inetAddress);
    isPortUsed = false;
} catch (IOException ignored) {
    isPortUsed = true;
...
booleanisPortUsed(int port)
is Port Used 
ServerSocket serverSocket = new ServerSocket(port);
return true;