Java Utililty Methods HTTP Port Find

Create an HTTP request line from the following parameters.

<methodName> + " /" + <path> + " HTTP/1.1\r\n"

Open a socket to the specified host and port, and issue the request.

Integer portInt = Integer.valueOf(port);
Socket s = new Socket(host, portInt);
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
String requestLine = methodName + " /" + path + " HTTP/1.1\r\n";
writer.write(requestLine);
writer.write("Host: " + host + ":" + port + "\r\n");
writer.write("User-Agent: systest-client\r\n");
writer.write("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");
...

return isTcpPortOpen(new InetSocketAddress(InetAddress.getLoopbackAddress(), port),
        DEFAULT_CONNECT_TIMEOUT_MS);

return new Callable<Boolean>() {
    public Boolean call() throws Exception {
        return isTcpPortOpen(port);
};

return isTcpPortOpenCallable(port, DEFAULT_CONNECT_TIMEOUT_MS);

if ("java.io.File".equals(javaType)) {
    return String.class;
} else if ("java.net.URL".equals(javaType)) {
    return String.class;
} else if ("java.net.URI".equals(javaType)) {
    return String.class;
return null;
...

String hostStr;
String portStr;
if (desc.startsWith("[")) {
    final int hostEnd = desc.indexOf(']');
    if (hostEnd < 0) {
        throw new IllegalArgumentException("invalid IPv6: " + desc);
    hostStr = desc.substring(1, hostEnd);
...

List<InetSocketAddress> result = new ArrayList<InetSocketAddress>(1);
if (specs == null) {
    result.add(new InetSocketAddress("localhost", defaultPort));
} else {
    String[] specStrings = specs.split("[ ,]+");
    for (String specString : specStrings) {
        int colon = specString.indexOf(':');
        if (colon < 0 || colon == specString.length() - 1) {
...

StringTokenizer tok = new StringTokenizer(hosts, ",");
String t;
InetSocketAddress addr;
Set<InetSocketAddress> retval = new HashSet<InetSocketAddress>();
while (tok.hasMoreTokens()) {
    t = tok.nextToken().trim();
    String host = t.substring(0, t.indexOf('['));
    host = host.trim();
...

String[] split = s.split(":", 2);
int port = DEFAULT_PORT;
if (split.length == 2) {
    try {
        port = Integer.parseInt(split[1]);
    } catch (NumberFormatException ex) {
return new InetSocketAddress(split[0], port);

String[] toks = Pattern.compile(",").split(s);
byte[] bAddr = new byte[4];
for (int j = 0; j < 4; j++) {
    bAddr[j] = new Integer(toks[j]).byteValue();
InetAddress addr = null;
try {
    addr = InetAddress.getByAddress(bAddr);
...