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

intfindFreePort()
See https://gist.github.com/vorburger/3429822 Returns a free port number on localhost. 
ServerSocket socket = null;
try {
    socket = new ServerSocket(0);
    socket.setReuseAddress(true);
    int port = socket.getLocalPort();
    try {
        socket.close();
    } catch (IOException e) {
...
intfindFreePort()
Find a free port for communication with Prolog. 
ServerSocket ss = new ServerSocket(0);
int port = ss.getLocalPort();
ss.close();
return port;
intfindFreePort()
This is really only used for unit tests but is included in the library so it can be reused across modules. 
ServerSocket server;
try {
    server = new ServerSocket(0);
    int port = server.getLocalPort();
    ourPorts.add(port);
    server.close();
    Thread.sleep(500);
    return port;
...
intfindFreePort()
find Free Port 
ServerSocket socket = new ServerSocket(0);
try {
    return socket.getLocalPort();
} finally {
    try {
        socket.close();
    } catch (IOException e) {
ServerSocketfindFreePort()
find Free Port 
ServerSocket server = null;
try {
    server = new ServerSocket(0, 1000, InetAddress.getLocalHost());
    server.setReuseAddress(true);
} catch (IOException e) {
    e.printStackTrace();
return server;
...
intfindFreePort()
Returns a free TCP/IP port number on localhost. 
try (final ServerSocket socket = new ServerSocket(0)) {
    socket.setReuseAddress(true);
    return socket.getLocalPort();
} catch (final IOException ex) {
    throw new IllegalStateException("Could not find a free TCP/IP port", ex);
intfindFreePort()
Attempts to find a free port 
return findFreePort(DEFAULT_PORT);
intfindFreePort()
Find free unused TCP port. 
try (ServerSocket socket = new ServerSocket(0)) {
    return socket.getLocalPort();
} catch (IOException e) {
    return -1;
intfindFreePort(int start, int len)
Search for a free TCP and UDP port in the given range 
int port = start;
int end = (len == 0) ? 65535 : start + len;
if (end > 65535)
    end = 65535;
while (port < end) {
    try {
        ServerSocket socket = new ServerSocket(port);
        socket.close();
...
intfindFreePort(int start, int limit)
find Free Port 
if (start == 0) {
    return 0;
int found = 0;
int port = start;
int finish = start + limit;
while (found == 0 && port < finish) {
    if (isPortAvailable(port)) {
...