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

intavailablePort(int prefered)
Check whether the port is available to binding 
int rtn = -1;
try {
    rtn = tryPort(prefered);
} catch (IOException e) {
return rtn;
booleancanConnect(String host, int port)
can Connect 
InetSocketAddress localAddress = new InetSocketAddress(0);
InetSocketAddress remoteAddress = new InetSocketAddress(host, Integer.valueOf(port));
return _canConnect(localAddress, remoteAddress);
booleancanConnect(String host, int port)
can Connect 
InetSocketAddress address = new InetSocketAddress(host, Integer.valueOf(port));
InetSocketAddress local = new InetSocketAddress(0);
InputStream in = null;
try (Socket socket = new Socket()) {
    socket.bind(local);
    socket.connect(address, 3000);
    in = socket.getInputStream();
    return true;
...
booleancanConnectOn(String host, int port)
can Connect On 
try {
    Socket socket = new Socket(host, port);
    socket.close();
    return true;
} catch (Exception ex) {
    return false;
InetSocketAddresscreateUnresolved(String host, int port)
Creates and returns an unresolved InetSocketAddress . 
return InetSocketAddress.createUnresolved(host, port);
voiddoSend(String command, String server, String port)
do Send 
Socket socket = new Socket(server, Integer.parseInt(port));
OutputStream os = socket.getOutputStream();
BufferedOutputStream out = new BufferedOutputStream(os);
out.write(command.getBytes());
out.write('\r');
out.flush();
socket.close();
StringexecuteHttpCommand(String host, int port, String request, String charset)
Connect to given host:port via direct TCP socket, send the input string, and return the result (if any) as a string 
Objects.requireNonNull(host);
Objects.requireNonNull(request);
try (Socket socket = new Socket(host, port)) {
    socket.getOutputStream().write(request.getBytes(charset));
    socket.shutdownOutput();
    BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream(), charset));
    String response = "";
    String line = in.readLine();
...
voidexportResource(Class fromClass, String resourceName, String exportPath)
export Resource 
InputStream in = null;
OutputStream out = null;
try {
    in = fromClass.getResourceAsStream(resourceName);
    if (in == null) {
        throw new IOException("Cannot get resource \"" + resourceName + "\" from jar.");
    int readBytes;
...
intfindAvailablePort()
find Available Port 
return findAvailablePort(21111);
intfindAvailablePort()
Requests a random server socket port to be created, closes it, and returns the port picked as a potentially available port. 
int port = 0;
ServerSocket socket = null;
try {
    socket = new ServerSocket(0);
    socket.setReuseAddress(true);
    port = socket.getLocalPort();
    Logger.getAnonymousLogger().info("port candidate:" + port);
} catch (Throwable e) {
...