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

intsafePort(final String port)
Validate the given port is in a valid range, returning 0 if it is invalid. 
try {
    if ("*".equals(port)) {
        return randomPort();
    final int number = Integer.parseInt(port);
    if (number < 0 || number > 65535) {
        return 0;
    } else {
...
intsearchPort(int number, int even, boolean stream)
Searches for a number of successive free ports in the range between minPort and maxPort 
boolean found = false;
int offset = 0;
int port = minPort;
while (!found) {
    switch (even) {
    case 2:
        port = minPort + 2 * offset;
        break;
...
intselectAvailablePort(int preferedPort)
select Available Port 
int port = -1;
ServerSocket ss = null;
try {
    ss = new ServerSocket();
    ss.bind(new InetSocketAddress(preferedPort));
    port = ss.getLocalPort();
} catch (IOException e) {
    try {
...
StringsendCommand(final String command, final int monitorPort)
send Command 
try (Socket socket = new Socket("127.0.0.1", monitorPort);
        BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()))) {
    writer.write(command);
    writer.newLine();
    writer.flush();
    return reader.readLine();
voidsendCommand(String host, Integer port, String cmd)
send Command 
Socket socket = new Socket(host, port);
OutputStream out = socket.getOutputStream();
out.write(cmd.getBytes());
out.close();
socket.close();
booleanserverIsUp(int port)
server Is Up 
try {
    URL url = new URL("http", "localhost", port, "/");
    HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
    httpURLConnection.setDoInput(true);
    httpURLConnection.setDoOutput(true);
    httpURLConnection.setRequestMethod("GET");
    httpURLConnection.connect();
    OutputStream outputStream = httpURLConnection.getOutputStream();
...
booleanServerListening(String host, int port)
The method check if a host is listening in the specified port. 
try (Socket s = new Socket(host, port);) {
    return true;
} catch (Exception e) {
    return false;
booleanserverListening(String host, int port)
server Listening 
Socket s = null;
try {
    s = new Socket(host, port);
    return true;
} catch (Exception e) {
    return false;
} finally {
    if (s != null) {
...
booleanserverListening(String hostName, int port)
Checks if there is a server socket listening in the given host and port. 
try {
    return serverListening(InetAddress.getByName(hostName), port);
} catch (UnknownHostException e) {
    return false;
voidwaitForLiveServer(String webContainerHostname, int webContainerPort, int timeoutMin)
wait For Live Server 
InetSocketAddress address = new InetSocketAddress(webContainerHostname, webContainerPort);
System.out.println("Waiting " + timeoutMin + " min for web server...");
long beginTime = System.currentTimeMillis();
long endTime = System.currentTimeMillis() + (timeoutMin * 60 * 1000);
boolean portOpened = false;
while ((!portOpened) && (System.currentTimeMillis() < endTime)) {
    portOpened = trySocket(address);
    if (portOpened) {
...