content: package cn.hotapk.fhttpserver;
  
  /*
   * #%L
   * NanoHttpd-Core
   * %%
   * Copyright (C) 2012 - 2015 nanohttpd
   * %%
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * 3. Neither the name of the nanohttpd nor the names of its contributors
   *    may be used to endorse or promote products derived from this software without
   *    specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
   * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   * #L%
   */
  
  import java.io.BufferedInputStream;
  import java.io.BufferedReader;
  import java.io.BufferedWriter;
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.Closeable;
  import java.io.DataOutput;
  import java.io.DataOutputStream;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.FilterOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.OutputStream;
  import java.io.OutputStreamWriter;
  import java.io.PrintWriter;
  import java.io.RandomAccessFile;
  import java.io.UnsupportedEncodingException;
  import java.net.InetAddress;
  import java.net.InetSocketAddress;
  import java.net.ServerSocket;
  import java.net.Socket;
  import java.net.SocketException;
  import java.net.SocketTimeoutException;
  import java.net.URLDecoder;
  import java.nio.ByteBuffer;
  import java.nio.channels.FileChannel;
  import java.nio.charset.Charset;
  import java.security.KeyStore;
  import java.text.SimpleDateFormat;
  import java.util.ArrayList;
  import java.util.Calendar;
  import java.util.Collections;
  import java.util.Date;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Locale;
  import java.util.Map;
  import java.util.StringTokenizer;
  import java.util.TimeZone;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  import java.util.zip.GZIPOutputStream;
  
  import javax.net.ssl.KeyManager;
  import javax.net.ssl.KeyManagerFactory;
  import javax.net.ssl.SSLContext;
  import javax.net.ssl.SSLServerSocket;
  import javax.net.ssl.SSLServerSocketFactory;
  import javax.net.ssl.TrustManagerFactory;
  
  import cn.hotapk.fhttpserver.NanoHTTPD.Response.IStatus;
  import cn.hotapk.fhttpserver.NanoHTTPD.Response.Status;
  
  
  /**
   * A simple, tiny, nicely embeddable HTTP server in Java
   * <p/>
   * <p/>
   * NanoHTTPD
   * <p>
   * Copyright (c) 2012-2013 by Paul S. Hawke, 2001,2005-2013 by Jarno Elonen,
   * 2010 by Konstantinos Togias
   * </p>
   * <p/>
   * <p/>
   * <b>Features + limitations: </b>
   * <ul>
   * <p/>
   * <li>Only one Java file</li>
   * <li>Java 5 compatible</li>
   * <li>Released as open source, Modified BSD licence</li>
   * <li>No fixed config files, logging, authorization etc. (Implement yourself if
   * you need them.)</li>
   * <li>Supports parameter parsing of GET and POST methods (+ rudimentary PUT
   * support in 1.25)</li>
   * <li>Supports both dynamic content and file serving</li>
   * <li>Supports file upload (since version 1.2, 2010)</li>
   * <li>Supports partial content (streaming)</li>
   * <li>Supports ETags</li>
   * <li>Never caches anything</li>
   * <li>Doesn't limit bandwidth, request time or simultaneous connections</li>
   * <li>Default code serves files and shows all HTTP parameters and headers</li>
   * <li>File server supports directory listing, index.html and index.htm</li>
   * <li>File server supports partial content (streaming)</li>
   * <li>File server supports ETags</li>
   * <li>File server does the 301 redirection trick for directories without '/'</li>
   * <li>File server supports simple skipping for files (continue download)</li>
   * <li>File server serves also very long files without memory overhead</li>
   * <li>Contains a built-in list of most common MIME types</li>
   * <li>All header names are converted to lower case so they don't vary between
   * browsers/clients</li>
   * <p/>
   * </ul>
   * <p/>
   * <p/>
   * <b>How to use: </b>
   * <ul>
   * <p/>
   * <li>Subclass and implement serve() and embed to your own program</li>
   * <p/>
   * </ul>
   * <p/>
   * See the separate "LICENSE.md" file for the distribution license (Modified BSD
   * licence)
   */
  public abstract class NanoHTTPD {
  
      /**
       * Pluggable strategy for asynchronously executing requests.
       */
      public interface AsyncRunner {
  
          void closeAll();
  
          void closed(ClientHandler clientHandler);
  
          void exec(ClientHandler code);
      }
  
      /**
       * The runnable that will be used for every new client connection.
       */
      public class ClientHandler implements Runnable {
  
          private final InputStream inputStream;
  
          private final Socket acceptSocket;
  
          private ClientHandler(InputStream inputStream, Socket acceptSocket) {
              this.inputStream = inputStream;
              this.acceptSocket = acceptSocket;
          }
  
          public void close() {
              safeClose(this.inputStream);
              safeClose(this.acceptSocket);
          }
  
          @Override
          public void run() {
              OutputStream outputStream = null;
              try {
                  outputStream = this.acceptSocket.getOutputStream();
                  TempFileManager tempFileManager = NanoHTTPD.this.tempFileManagerFactory.create();
                  HTTPSession session = new HTTPSession(tempFileManager, this.inputStream, outputStream, this.acceptSocket.getInetAddress());
                  while (!this.acceptSocket.isClosed()) {
                      session.execute();
                  }
              } catch (Exception e) {
                  // When the socket is closed by the client,
                  // we throw our own SocketException
                  // to break the "keep alive" loop above. If
                  // the exception was anything other
                  // than the expected SocketException OR a
                  // SocketTimeoutException, print the
                  // stacktrace
                  if (!(e instanceof SocketException && "NanoHttpd Shutdown".equals(e.getMessage())) && !(e instanceof SocketTimeoutException)) {
                      NanoHTTPD.LOG.log(Level.FINE, "Communication with the client broken", e);
                  }
              } finally {
                  safeClose(outputStream);
                  safeClose(this.inputStream);
                  safeClose(this.acceptSocket);
                  NanoHTTPD.this.asyncRunner.closed(this);
              }
          }
      }
  
      public static class Cookie {
  
          public static String getHTTPTime(int days) {
              Calendar calendar = Calendar.getInstance();
              SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.US);
              dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
              calendar.add(Calendar.DAY_OF_MONTH, days);
              return dateFormat.format(calendar.getTime());
          }
  
          private final String n, v, e;
  
          public Cookie(String name, String value) {
              this(name, value, 30);
          }
  
          public Cookie(String name, String value, int numDays) {
              this.n = name;
              this.v = value;
              this.e = getHTTPTime(numDays);
          }
  
          public Cookie(String name, String value, String expires) {
              this.n = name;
              this.v = value;
              this.e = expires;
          }
  
          public String getHTTPHeader() {
              String fmt = "%s=%s; expires=%s";
              return String.format(fmt, this.n, this.v, this.e);
          }
      }
  
      /**
       * Provides rudimentary support for cookies. Doesn't support 'path',
       * 'secure' nor 'httpOnly'. Feel free to improve it and/or add unsupported
       * features.
       *
       * @author LordFokas
       */
      public class CookieHandler implements Iterable<String> {
  
          private final HashMap<String, String> cookies = new HashMap<String, String>();
  
          private final ArrayList<Cookie> queue = new ArrayList<Cookie>();
  
          public CookieHandler(Map<String, String> httpHeaders) {
              String raw = httpHeaders.get("cookie");
              if (raw != null) {
                  String[] tokens = raw.split(";");
                  for (String token : tokens) {
                      String[] data = token.trim().split("=");
                      if (data.length == 2) {
                          this.cookies.put(data[0], data[1]);
                      }
                  }
              }
          }
  
          /**
           * Set a cookie with an expiration date from a month ago, effectively
           * deleting it on the client side.
           *
           * @param name The cookie name.
           */
          public void delete(String name) {
              set(name, "-delete-", -30);
          }
  
          @Override
          public Iterator<String> iterator() {
              return this.cookies.keySet().iterator();
          }
  
          /**
           * Read a cookie from the HTTP Headers.
           *
           * @param name The cookie's name.
           * @return The cookie's value if it exists, null otherwise.
           */
          public String read(String name) {
              return this.cookies.get(name);
          }
  
          public void set(Cookie cookie) {
              this.queue.add(cookie);
          }
  
          /**
           * Sets a cookie.
           *
           * @param name    The cookie's name.
           * @param value   The cookie's value.
           * @param expires How many days until the cookie expires.
           */
          public void set(String name, String value, int expires) {
              this.queue.add(new Cookie(name, value, Cookie.getHTTPTime(expires)));
          }
  
          /**
           * Internally used by the webserver to add all queued cookies into the
           * Response's HTTP Headers.
           *
           * @param response The Response object to which headers the queued cookies
           *                 will be added.
           */
          public void unloadQueue(Response response) {
              for (Cookie cookie : this.queue) {
                  response.addHeader("Set-Cookie", cookie.getHTTPHeader());
              }
          }
      }
  
      /**
       * Default threading strategy for NanoHTTPD.
       * <p/>
       * <p>
       * By default, the server spawns a new Thread for every incoming request.
       * These are set to <i>daemon</i> status, and named according to the request
       * number. The name is useful when profiling the application.
       * </p>
       */
      public static class DefaultAsyncRunner implements AsyncRunner {
  
          private long requestCount;
  
          private final List<ClientHandler> running = Collections.synchronizedList(new ArrayList<ClientHandler>());
  
          /**
           * @return a list with currently running clients.
           */
          public List<ClientHandler> getRunning() {
              return running;
          }
  
          @Override
          public void closeAll() {
              // copy of the list for concurrency
              for (ClientHandler clientHandler : new ArrayList<ClientHandler>(this.running)) {
                  clientHandler.close();
              }
          }
  
          @Override
          public void closed(ClientHandler clientHandler) {
              this.running.remove(clientHandler);
          }
  
          @Override
          public void exec(ClientHandler clientHandler) {
              ++this.requestCount;
              Thread t = new Thread(clientHandler);
              t.setDaemon(true);
              t.setName("NanoHttpd Request Processor (#" + this.requestCount + ")");
              this.running.add(clientHandler);
              t.start();
          }
      }
  
      /**
       * Default strategy for creating and cleaning up temporary files.
       * <p/>
       * <p>
       * By default, files are created by <code>File.createTempFile()</code> in
       * the directory specified.
       * </p>
       */
      public static class DefaultTempFile implements TempFile {
  
          private final File file;
  
          private final OutputStream fstream;
  
          public DefaultTempFile(File tempdir) throws IOException {
              this.file = File.createTempFile("NanoHTTPD-", "", tempdir);
              this.fstream = new FileOutputStream(this.file);
          }
  
          @Override
          public void delete() throws Exception {
              safeClose(this.fstream);
              if (!this.file.delete()) {
                  throw new Exception("could not delete temporary file");
              }
          }
  
          @Override
          public String getName() {
              return this.file.getAbsolutePath();
          }
  
          @Override
          public OutputStream open() throws Exception {
              return this.fstream;
          }
      }
  
      /**
       * Default strategy for creating and cleaning up temporary files.
       * <p/>
       * <p>
       * This class stores its files in the standard location (that is, wherever
       * <code>java.io.tmpdir</code> points to). Files are added to an internal
       * list, and deleted when no longer needed (that is, when
       * <code>clear()</code> is invoked at the end of processing a request).
       * </p>
       */
      public static class DefaultTempFileManager implements TempFileManager {
  
          private final File tmpdir;
  
          private final List<TempFile> tempFiles;
  
          public DefaultTempFileManager() {
              this.tmpdir = new File(System.getProperty("java.io.tmpdir"));
              if (!tmpdir.exists()) {
                  tmpdir.mkdirs();
              }
              this.tempFiles = new ArrayList<TempFile>();
          }
  
          @Override
          public void clear() {
              for (TempFile file : this.tempFiles) {
                  try {
                      file.delete();
                  } catch (Exception ignored) {
                      NanoHTTPD.LOG.log(Level.WARNING, "could not delete file ", ignored);
                  }
              }
              this.tempFiles.clear();
          }
  
          @Override
          public TempFile createTempFile(String filename_hint) throws Exception {
              DefaultTempFile tempFile = new DefaultTempFile(this.tmpdir);
              this.tempFiles.add(tempFile);
              return tempFile;
          }
      }
  
      /**
       * Default strategy for creating and cleaning up temporary files.
       */
      private class DefaultTempFileManagerFactory implements TempFileManagerFactory {
  
          @Override
          public TempFileManager create() {
              return new DefaultTempFileManager();
          }
      }
  
      private static final String CHARSET_REGEX = "[ |\t]*(charset)[ |\t]*=[ |\t]*['|\"]?([^\"^'^;]*)['|\"]?";
  
      private static final Pattern CHARSET_PATTERN = Pattern.compile(CHARSET_REGEX, Pattern.CASE_INSENSITIVE);
  
      private static final String BOUNDARY_REGEX = "[ |\t]*(boundary)[ |\t]*=[ |\t]*['|\"]?([^\"^'^;]*)['|\"]?";
  
      private static final Pattern BOUNDARY_PATTERN = Pattern.compile(BOUNDARY_REGEX, Pattern.CASE_INSENSITIVE);
  
      /**
       * Creates a normal ServerSocket for TCP connections
       */
      public static class DefaultServerSocketFactory implements ServerSocketFactory {
  
          @Override
          public ServerSocket create() throws IOException {
              return new ServerSocket();
          }
  
      }
  
      /**
       * Creates a new SSLServerSocket
       */
      public static class SecureServerSocketFactory implements ServerSocketFactory {
  
          private SSLServerSocketFactory sslServerSocketFactory;
  
          private String[] sslProtocols;
  
          public SecureServerSocketFactory(SSLServerSocketFactory sslServerSocketFactory, String[] sslProtocols) {
              this.sslServerSocketFactory = sslServerSocketFactory;
              this.sslProtocols = sslProtocols;
          }
  
          @Override
          public ServerSocket create() throws IOException {
              SSLServerSocket ss = null;
              ss = (SSLServerSocket) this.sslServerSocketFactory.createServerSocket();
              if (this.sslProtocols != null) {
                  ss.setEnabledProtocols(this.sslProtocols);
              } else {
                  ss.setEnabledProtocols(ss.getSupportedProtocols());
              }
              ss.setUseClientMode(false);
              ss.setWantClientAuth(false);
              ss.setNeedClientAuth(false);
              return ss;
          }
  
      }
  
      private static final String CONTENT_DISPOSITION_REGEX = "([ |\t]*Content-Disposition[ |\t]*:)(.*)";
  
      private static final Pattern CONTENT_DISPOSITION_PATTERN = Pattern.compile(CONTENT_DISPOSITION_REGEX, Pattern.CASE_INSENSITIVE);
  
      private static final String CONTENT_TYPE_REGEX = "([ |\t]*content-type[ |\t]*:)(.*)";
  
      private static final Pattern CONTENT_TYPE_PATTERN = Pattern.compile(CONTENT_TYPE_REGEX, Pattern.CASE_INSENSITIVE);
  
      private static final String CONTENT_DISPOSITION_ATTRIBUTE_REGEX = "[ |\t]*([a-zA-Z]*)[ |\t]*=[ |\t]*['|\"]([^\"^']*)['|\"]";
  
      private static final Pattern CONTENT_DISPOSITION_ATTRIBUTE_PATTERN = Pattern.compile(CONTENT_DISPOSITION_ATTRIBUTE_REGEX);
  
      protected class HTTPSession implements IHTTPSession {
  
          private static final int REQUEST_BUFFER_LEN = 512;
  
          private static final int MEMORY_STORE_LIMIT = 1024;
  
          public static final int BUFSIZE = 8192;
  
          public static final int MAX_HEADER_SIZE = 1024;
  
          private final TempFileManager tempFileManager;
  
          private final OutputStream outputStream;
  
          private final BufferedInputStream inputStream;
  
          private int splitbyte;
  
          private int rlen;
  
          private String uri;
  
          private Method method;
  
          private Map<String, String> parms;
  
          private Map<String, String> headers;
  
          private CookieHandler cookies;
  
          private String queryParameterString;
  
          private String remoteIp;
  
          private String protocolVersion;
  
          public HTTPSession(TempFileManager tempFileManager, InputStream inputStream, OutputStream outputStream) {
              this.tempFileManager = tempFileManager;
              this.inputStream = new BufferedInputStream(inputStream, HTTPSession.BUFSIZE);
              this.outputStream = outputStream;
          }
  
          public HTTPSession(TempFileManager tempFileManager, InputStream inputStream, OutputStream outputStream, InetAddress inetAddress) {
              this.tempFileManager = tempFileManager;
              this.inputStream = new BufferedInputStream(inputStream, HTTPSession.BUFSIZE);
              this.outputStream = outputStream;
              this.remoteIp = inetAddress.isLoopbackAddress() || inetAddress.isAnyLocalAddress() ? "127.0.0.1" : inetAddress.getHostAddress().toString();
              this.headers = new HashMap<String, String>();
          }
  
          /**
           * Decodes the sent headers and loads the data into Key/value pairs
           */
          private void decodeHeader(BufferedReader in, Map<String, String> pre, Map<String, String> parms, Map<String, String> headers) throws ResponseException {
              try {
                  // Read the request line
                  String inLine = in.readLine();
                  if (inLine == null) {
                      return;
                  }
  
                  StringTokenizer st = new StringTokenizer(inLine);
                  if (!st.hasMoreTokens()) {
                      throw new ResponseException(Status.BAD_REQUEST, "BAD REQUEST: Syntax error. Usage: GET /example/file.html");
                  }
  
                  pre.put("method", st.nextToken());
  
                  if (!st.hasMoreTokens()) {
                      throw new ResponseException(Status.BAD_REQUEST, "BAD REQUEST: Missing URI. Usage: GET /example/file.html");
                  }
  
                  String uri = st.nextToken();
  
                  // Decode parameters from the URI
                  int qmi = uri.indexOf('?');
                  if (qmi >= 0) {
                      decodeParms(uri.substring(qmi + 1), parms);
                      uri = decodePercent(uri.substring(0, qmi));
                  } else {
                      uri = decodePercent(uri);
                  }
  
                  // If there's another token, its protocol version,
                  // followed by HTTP headers.
                  // NOTE: this now forces header names lower case since they are
                  // case insensitive and vary by client.
                  if (st.hasMoreTokens()) {
                      protocolVersion = st.nextToken();
                  } else {
                      protocolVersion = "HTTP/1.1";
                      NanoHTTPD.LOG.log(Level.FINE, "no protocol version specified, strange. Assuming HTTP/1.1.");
                  }
                  String line = in.readLine();
                  while (line != null && line.trim().length() > 0) {
                      int p = line.indexOf(':');
                      if (p >= 0) {
                          headers.put(line.substring(0, p).trim().toLowerCase(Locale.US), line.substring(p + 1).trim());
                      }
                      line = in.readLine();
                  }
  
                  pre.put("uri", uri);
              } catch (IOException ioe) {
                  throw new ResponseException(Status.INTERNAL_ERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage(), ioe);
              }
          }
  
          /**
           * Decodes the Multipart Body data and put it into Key/Value pairs.
           */
          private void decodeMultipartFormData(String boundary, String encoding, ByteBuffer fbuf, Map<String, String> parms, Map<String, String> files) throws ResponseException {
              try {
                  int[] boundary_idxs = getBoundaryPositions(fbuf, boundary.getBytes());
                  if (boundary_idxs.length < 2) {
                      throw new ResponseException(Status.BAD_REQUEST, "BAD REQUEST: Content type is multipart/form-data but contains less than two boundary strings.");
                  }
  
                  byte[] part_header_buff = new byte[MAX_HEADER_SIZE];
                  for (int bi = 0; bi < boundary_idxs.length - 1; bi++) {
                      fbuf.position(boundary_idxs[bi]);
                      int len = (fbuf.remaining() < MAX_HEADER_SIZE) ? fbuf.remaining() : MAX_HEADER_SIZE;
                      fbuf.get(part_header_buff, 0, len);
                      BufferedReader in = new BufferedReader(new InputStreamReader(new ByteArrayInputStream(part_header_buff, 0, len), Charset.forName(encoding)), len);
  
                      int headerLines = 0;
                      // First line is boundary string
                      String mpline = in.readLine();
                      headerLines++;
                      if (!mpline.contains(boundary)) {
                          throw new ResponseException(Status.BAD_REQUEST, "BAD REQUEST: Content type is multipart/form-data but chunk does not start with boundary.");
                      }
  
                      String part_name = null, file_name = null, content_type = null;
                      // Parse the reset of the header lines
                      mpline = in.readLine();
                      headerLines++;
                      while (mpline != null && mpline.trim().length() > 0) {
                          Matcher matcher = CONTENT_DISPOSITION_PATTERN.matcher(mpline);
                          if (matcher.matches()) {
                              String attributeString = matcher.group(2);
                              matcher = CONTENT_DISPOSITION_ATTRIBUTE_PATTERN.matcher(attributeString);
                              while (matcher.find()) {
                                  String key = matcher.group(1);
                                  if (key.equalsIgnoreCase("name")) {
                                      part_name = matcher.group(2);
                                  } else if (key.equalsIgnoreCase("filename")) {
                                      file_name = matcher.group(2);
                                  }
                              }
                          }
                          matcher = CONTENT_TYPE_PATTERN.matcher(mpline);
                          if (matcher.matches()) {
                              content_type = matcher.group(2).trim();
                          }
                          mpline = in.readLine();
                          headerLines++;
                      }
                      int part_header_len = 0;
                      while (headerLines-- > 0) {
                          part_header_len = scipOverNewLine(part_header_buff, part_header_len);
                      }
                      // Read the part data
                      if (part_header_len >= len - 4) {
                          throw new ResponseException(Status.INTERNAL_ERROR, "Multipart header size exceeds MAX_HEADER_SIZE.");
                      }
                      int part_data_start = boundary_idxs[bi] + part_header_len;
                      int part_data_end = boundary_idxs[bi + 1] - 4;
  
                      fbuf.position(part_data_start);
                      if (content_type == null) {
                          // Read the part into a string
                          byte[] data_bytes = new byte[part_data_end - part_data_start];
                          fbuf.get(data_bytes);
                          parms.put(part_name, new String(data_bytes, encoding));
                      } else {
                          // Read it into a file
                          String path = saveTmpFile(fbuf, part_data_start, part_data_end - part_data_start, file_name);
                          if (!files.containsKey(part_name)) {
                              files.put(part_name, path);
                          } else {
                              int count = 2;
                              while (files.containsKey(part_name + count)) {
                                  count++;
                              }
                              files.put(part_name + count, path);
                          }
                          parms.put(part_name, file_name);
                      }
                  }
              } catch (ResponseException re) {
                  throw re;
              } catch (Exception e) {
                  throw new ResponseException(Status.INTERNAL_ERROR, e.toString());
              }
          }
  
          private int scipOverNewLine(byte[] part_header_buff, int index) {
              while (part_header_buff[index] != '\n') {
                  index++;
              }
              return ++index;
          }
  
          /**
           * Decodes parameters in percent-encoded URI-format ( e.g.
           * "name=Jack%20Daniels&pass=Single%20Malt" ) and adds them to given
           * Map. NOTE: this doesn't support multiple identical keys due to the
           * simplicity of Map.
           */
          private void decodeParms(String parms, Map<String, String> p) {
              if (parms == null) {
                  this.queryParameterString = "";
                  return;
              }
  
              this.queryParameterString = parms;
              StringTokenizer st = new StringTokenizer(parms, "&");
              while (st.hasMoreTokens()) {
                  String e = st.nextToken();
                  int sep = e.indexOf('=');
                  if (sep >= 0) {
                      p.put(decodePercent(e.substring(0, sep)).trim(), decodePercent(e.substring(sep + 1)));
                  } else {
                      p.put(decodePercent(e).trim(), "");
                  }
              }
          }
  
          @Override
          public void execute() throws IOException {
              Response r = null;
              try {
                  // Read the first 8192 bytes.
                  // The full header should fit in here.
                  // Apache's default header limit is 8KB.
                  // Do NOT assume that a single read will get the entire header
                  // at once!
                  byte[] buf = new byte[HTTPSession.BUFSIZE];
                  this.splitbyte = 0;
                  this.rlen = 0;
  
                  int read = -1;
                  this.inputStream.mark(HTTPSession.BUFSIZE);
                  try {
                      read = this.inputStream.read(buf, 0, HTTPSession.BUFSIZE);
                  } catch (Exception e) {
                      safeClose(this.inputStream);
                      safeClose(this.outputStream);
                      throw new SocketException("NanoHttpd Shutdown");
                  }
                  if (read == -1) {
                      // socket was been closed
                      safeClose(this.inputStream);
                      safeClose(this.outputStream);
                      throw new SocketException("NanoHttpd Shutdown");
                  }
                  while (read > 0) {
                      this.rlen += read;
                      this.splitbyte = findHeaderEnd(buf, this.rlen);
                      if (this.splitbyte > 0) {
                          break;
                      }
                      read = this.inputStream.read(buf, this.rlen, HTTPSession.BUFSIZE - this.rlen);
                  }
  
                  if (this.splitbyte < this.rlen) {
                      this.inputStream.reset();
                      this.inputStream.skip(this.splitbyte);
                  }
  
                  this.parms = new HashMap<String, String>();
                  if (null == this.headers) {
                      this.headers = new HashMap<String, String>();
                  } else {
                      this.headers.clear();
                  }
  
                  // Create a BufferedReader for parsing the header.
                  BufferedReader hin = new BufferedReader(new InputStreamReader(new ByteArrayInputStream(buf, 0, this.rlen)));
  
                  // Decode the header into parms and header java properties
                  Map<String, String> pre = new HashMap<String, String>();
                  decodeHeader(hin, pre, this.parms, this.headers);
  
                  if (null != this.remoteIp) {
                      this.headers.put("remote-addr", this.remoteIp);
                      this.headers.put("http-client-ip", this.remoteIp);
                  }
  
                  this.method = Method.lookup(pre.get("method"));
                  if (this.method == null) {
                      throw new ResponseException(Status.BAD_REQUEST, "BAD REQUEST: Syntax error.");
                  }
  
                  this.uri = pre.get("uri");
  
                  this.cookies = new CookieHandler(this.headers);
  
                  String connection = this.headers.get("connection");
                  boolean keepAlive = protocolVersion.equals("HTTP/1.1") && (connection == null || !connection.matches("(?i).*close.*"));
  
                  // Ok, now do the serve()
  
                  // TODO: long body_size = getBodySize();
                  // TODO: long pos_before_serve = this.inputStream.totalRead()
                  // (requires implementaion for totalRead())
                  r = serve(this);
                  // TODO: this.inputStream.skip(body_size -
                  // (this.inputStream.totalRead() - pos_before_serve))
  
                  if (r == null) {
                      throw new ResponseException(Status.INTERNAL_ERROR, "SERVER INTERNAL ERROR: Serve() returned a null response.");
                  } else {
                      String acceptEncoding = this.headers.get("accept-encoding");
                      this.cookies.unloadQueue(r);
                      r.setRequestMethod(this.method);
                      r.setGzipEncoding(useGzipWhenAccepted(r) && acceptEncoding != null && acceptEncoding.contains("gzip"));
                      r.setKeepAlive(keepAlive);
                      r.send(this.outputStream);
                  }
                  if (!keepAlive || "close".equalsIgnoreCase(r.getHeader("connection"))) {
                      throw new SocketException("NanoHttpd Shutdown");
                  }
              } catch (SocketException e) {
                  // throw it out to close socket object (finalAccept)
                  throw e;
              } catch (SocketTimeoutException ste) {
                  // treat socket timeouts the same way we treat socket exceptions
                  // i.e. close the stream & finalAccept object by throwing the
                  // exception up the call stack.
                  throw ste;
              } catch (IOException ioe) {
                  Response resp = newFixedLengthResponse(Status.INTERNAL_ERROR, NanoHTTPD.MIME_PLAINTEXT, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage());
                  resp.send(this.outputStream);
                  safeClose(this.outputStream);
              } catch (ResponseException re) {
                  Response resp = newFixedLengthResponse(re.getStatus(), NanoHTTPD.MIME_PLAINTEXT, re.getMessage());
                  resp.send(this.outputStream);
                  safeClose(this.outputStream);
              } finally {
                  safeClose(r);
                  this.tempFileManager.clear();
              }
          }
  
          /**
           * Find byte index separating header from body. It must be the last byte
           * of the first two sequential new lines.
           */
          private int findHeaderEnd(final byte[] buf, int rlen) {
              int splitbyte = 0;
              while (splitbyte + 1 < rlen) {
  
                  // RFC2616
                  if (buf[splitbyte] == '\r' && buf[splitbyte + 1] == '\n' && splitbyte + 3 < rlen && buf[splitbyte + 2] == '\r' && buf[splitbyte + 3] == '\n') {
                      return splitbyte + 4;
                  }
  
                  // tolerance
                  if (buf[splitbyte] == '\n' && buf[splitbyte + 1] == '\n') {
                      return splitbyte + 2;
                  }
                  splitbyte++;
              }
              return 0;
          }
  
          /**
           * Find the byte positions where multipart boundaries start. This reads
           * a large block at a time and uses a temporary buffer to optimize
           * (memory mapped) file access.
           */
          private int[] getBoundaryPositions(ByteBuffer b, byte[] boundary) {
              int[] res = new int[0];
              if (b.remaining() < boundary.length) {
                  return res;
              }
  
              int search_window_pos = 0;
              byte[] search_window = new byte[4 * 1024 + boundary.length];
  
              int first_fill = (b.remaining() < search_window.length) ? b.remaining() : search_window.length;
              b.get(search_window, 0, first_fill);
              int new_bytes = first_fill - boundary.length;
  
              do {
                  // Search the search_window
                  for (int j = 0; j < new_bytes; j++) {
                      for (int i = 0; i < boundary.length; i++) {
                          if (search_window[j + i] != boundary[i])
                              break;
                          if (i == boundary.length - 1) {
                              // Match found, add it to results
                              int[] new_res = new int[res.length + 1];
                              System.arraycopy(res, 0, new_res, 0, res.length);
                              new_res[res.length] = search_window_pos + j;
                              res = new_res;
                          }
                      }
                  }
                  search_window_pos += new_bytes;
  
                  // Copy the end of the buffer to the start
                  System.arraycopy(search_window, search_window.length - boundary.length, search_window, 0, boundary.length);
  
                  // Refill search_window
                  new_bytes = search_window.length - boundary.length;
                  new_bytes = (b.remaining() < new_bytes) ? b.remaining() : new_bytes;
                  b.get(search_window, boundary.length, new_bytes);
              } while (new_bytes > 0);
              return res;
          }
  
          @Override
          public CookieHandler getCookies() {
              return this.cookies;
          }
  
          @Override
          public final Map<String, String> getHeaders() {
              return this.headers;
          }
  
          @Override
          public final InputStream getInputStream() {
              return this.inputStream;
          }
  
          @Override
          public final Method getMethod() {
              return this.method;
          }
  
          @Override
          public final Map<String, String> getParms() {
              return this.parms;
          }
  
          @Override
          public String getQueryParameterString() {
              return this.queryParameterString;
          }
  
          private RandomAccessFile getTmpBucket() {
              try {
                  TempFile tempFile = this.tempFileManager.createTempFile(null);
                  return new RandomAccessFile(tempFile.getName(), "rw");
              } catch (Exception e) {
                  throw new Error(e); // we won't recover, so throw an error
              }
          }
  
          @Override
          public final String getUri() {
              return this.uri;
          }
  
          /**
           * Deduce body length in bytes. Either from "content-length" header or
           * read bytes.
           */
          public long getBodySize() {
              if (this.headers.containsKey("content-length")) {
                  return Long.parseLong(this.headers.get("content-length"));
              } else if (this.splitbyte < this.rlen) {
                  return this.rlen - this.splitbyte;
              }
              return 0;
          }
  
          @Override
          public void parseBody(Map<String, String> files) throws IOException, ResponseException {
              RandomAccessFile randomAccessFile = null;
              try {
                  long size = getBodySize();
                  ByteArrayOutputStream baos = null;
                  DataOutput request_data_output = null;
  
                  // Store the request in memory or a file, depending on size
                  if (size < MEMORY_STORE_LIMIT) {
                      baos = new ByteArrayOutputStream();
                      request_data_output = new DataOutputStream(baos);
                  } else {
                      randomAccessFile = getTmpBucket();
                      request_data_output = randomAccessFile;
                  }
  
                  // Read all the body and write it to request_data_output
                  byte[] buf = new byte[REQUEST_BUFFER_LEN];
                  while (this.rlen >= 0 && size > 0) {
                      this.rlen = this.inputStream.read(buf, 0, (int) Math.min(size, REQUEST_BUFFER_LEN));
                      size -= this.rlen;
                      if (this.rlen > 0) {
                          request_data_output.write(buf, 0, this.rlen);
                      }
                  }
  
                  ByteBuffer fbuf = null;
                  if (baos != null) {
                      fbuf = ByteBuffer.wrap(baos.toByteArray(), 0, baos.size());
                  } else {
                      fbuf = randomAccessFile.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, randomAccessFile.length());
                      randomAccessFile.seek(0);
                  }
  
                  // If the method is POST, there may be parameters
                  // in data section, too, read it:
                  if (Method.POST.equals(this.method)) {
                      String contentType = "";
                      String contentTypeHeader = this.headers.get("content-type");
  
                      StringTokenizer st = null;
                      if (contentTypeHeader != null) {
                          st = new StringTokenizer(contentTypeHeader, ",; ");
                          if (st.hasMoreTokens()) {
                              contentType = st.nextToken();
                          }
                      }
  
                      if ("multipart/form-data".equalsIgnoreCase(contentType)) {
                          // Handle multipart/form-data
                          if (!st.hasMoreTokens()) {
                              throw new ResponseException(Status.BAD_REQUEST,
                                      "BAD REQUEST: Content type is multipart/form-data but boundary missing. Usage: GET /example/file.html");
                          }
                          decodeMultipartFormData(getAttributeFromContentHeader(contentTypeHeader, BOUNDARY_PATTERN, null), //
                                  getAttributeFromContentHeader(contentTypeHeader, CHARSET_PATTERN, "UTF-8"), fbuf, this.parms, files);
                      } else {
                          byte[] postBytes = new byte[fbuf.remaining()];
                          fbuf.get(postBytes);
                          String postLine = new String(postBytes).trim();
                          // Handle application/x-www-form-urlencoded
                          if ("application/x-www-form-urlencoded".equalsIgnoreCase(contentType)) {
                              decodeParms(postLine, this.parms);
                          } else if (postLine.length() != 0) {
                              // Special case for raw POST data => create a
                              // special files entry "postData" with raw content
                              // data
                              files.put("postData", postLine);
                          }
                      }
                  } else if (Method.PUT.equals(this.method)) {
                      files.put("content", saveTmpFile(fbuf, 0, fbuf.limit(), null));
                  }
              } finally {
                  safeClose(randomAccessFile);
              }
          }
  
          private String getAttributeFromContentHeader(String contentTypeHeader, Pattern pattern, String defaultValue) {
              Matcher matcher = pattern.matcher(contentTypeHeader);
              return matcher.find() ? matcher.group(2) : defaultValue;
          }
  
          /**
           * Retrieves the content of a sent file and saves it to a temporary
           * file. The full path to the saved file is returned.
           */
          private String saveTmpFile(ByteBuffer b, int offset, int len, String filename_hint) {
              String path = "";
              if (len > 0) {
                  FileOutputStream fileOutputStream = null;
                  try {
                      TempFile tempFile = this.tempFileManager.createTempFile(filename_hint);
                      ByteBuffer src = b.duplicate();
                      fileOutputStream = new FileOutputStream(tempFile.getName());
                      FileChannel dest = fileOutputStream.getChannel();
                      src.position(offset).limit(offset + len);
                      dest.write(src.slice());
                      path = tempFile.getName();
                  } catch (Exception e) { // Catch exception if any
                      throw new Error(e); // we won't recover, so throw an error
                  } finally {
                      safeClose(fileOutputStream);
                  }
              }
              return path;
          }
      }
  
      /**
       * Handles one session, i.e. parses the HTTP request and returns the
       * response.
       */
      public interface IHTTPSession {
  
          void execute() throws IOException;
  
          CookieHandler getCookies();
  
          Map<String, String> getHeaders();
  
          InputStream getInputStream();
  
          Method getMethod();
  
          Map<String, String> getParms();
  
          String getQueryParameterString();
  
          /**
           * @return the path part of the URL.
           */
          String getUri();
  
          /**
           * Adds the files in the request body to the files map.
           *
           * @param files map to modify
           */
          void parseBody(Map<String, String> files) throws IOException, ResponseException;
      }
  
      /**
       * HTTP Request methods, with the ability to decode a <code>String</code>
       * back to its enum value.
       */
      public enum Method {
          GET,
          PUT,
          POST,
          DELETE,
          HEAD,
          OPTIONS,
          TRACE,
          CONNECT,
          PATCH;
  
          static Method lookup(String method) {
              for (Method m : Method.values()) {
                  if (m.toString().equalsIgnoreCase(method)) {
                      return m;
                  }
              }
              return null;
          }
      }
  
      /**
       * HTTP response. Return one of these from serve().
       */
      public static class Response implements Closeable {
  
          public interface IStatus {
  
              String getDescription();
  
              int getRequestStatus();
          }
  
          /**
           * Some HTTP response status codes
           */
          public enum Status implements IStatus {
              SWITCH_PROTOCOL(101, "Switching Protocols"),
              OK(200, "OK"),
              CREATED(201, "Created"),
              ACCEPTED(202, "Accepted"),
              NO_CONTENT(204, "No Content"),
              PARTIAL_CONTENT(206, "Partial Content"),
              REDIRECT(301, "Moved Permanently"),
              NOT_MODIFIED(304, "Not Modified"),
              BAD_REQUEST(400, "Bad Request"),
              UNAUTHORIZED(401, "Unauthorized"),
              FORBIDDEN(403, "Forbidden"),
              NOT_FOUND(404, "Not Found"),
              METHOD_NOT_ALLOWED(405, "Method Not Allowed"),
              NOT_ACCEPTABLE(406, "Not Acceptable"),
              REQUEST_TIMEOUT(408, "Request Timeout"),
              CONFLICT(409, "Conflict"),
              RANGE_NOT_SATISFIABLE(416, "Requested Range Not Satisfiable"),
              INTERNAL_ERROR(500, "Internal Server Error"),
              NOT_IMPLEMENTED(501, "Not Implemented"),
              UNSUPPORTED_HTTP_VERSION(505, "HTTP Version Not Supported");
  
              private final int requestStatus;
  
              private final String description;
  
              Status(int requestStatus, String description) {
                  this.requestStatus = requestStatus;
                  this.description = description;
              }
  
              @Override
              public String getDescription() {
                  return "" + this.requestStatus + " " + this.description;
              }
  
              @Override
              public int getRequestStatus() {
                  return this.requestStatus;
              }
  
          }
  
          /**
           * Output stream that will automatically send every write to the wrapped
           * OutputStream according to chunked transfer:
           * http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.6.1
           */
          private static class ChunkedOutputStream extends FilterOutputStream {
  
              public ChunkedOutputStream(OutputStream out) {
                  super(out);
              }
  
              @Override
              public void write(int b) throws IOException {
                  byte[] data = {
                          (byte) b
                  };
                  write(data, 0, 1);
              }
  
              @Override
              public void write(byte[] b) throws IOException {
                  write(b, 0, b.length);
              }
  
              @Override
              public void write(byte[] b, int off, int len) throws IOException {
                  if (len == 0)
                      return;
                  out.write(String.format("%x\r\n", len).getBytes());
                  out.write(b, off, len);
                  out.write("\r\n".getBytes());
              }
  
              public void finish() throws IOException {
                  out.write("0\r\n\r\n".getBytes());
              }
  
          }
  
          /**
           * HTTP status code after processing, e.g. "200 OK", Status.OK
           */
          private IStatus status;
  
          /**
           * MIME type of content, e.g. "text/html"
           */
          private String mimeType;
  
          /**
           * Data of the response, may be null.
           */
          private InputStream data;
  
          private long contentLength;
  
          /**
           * Headers for the HTTP response. Use addHeader() to add lines.
           */
          private final Map<String, String> header = new HashMap<String, String>();
  
          /**
           * The request method that spawned this response.
           */
          private Method requestMethod;
  
          /**
           * Use chunkedTransfer
           */
          private boolean chunkedTransfer;
  
          private boolean encodeAsGzip;
  
          private boolean keepAlive;
  
          /**
           * Creates a fixed length response if totalBytes>=0, otherwise chunked.
           */
          protected Response(IStatus status, String mimeType, InputStream data, long totalBytes) {
              this.status = status;
              this.mimeType = mimeType;
              if (data == null) {
                  this.data = new ByteArrayInputStream(new byte[0]);
                  this.contentLength = 0L;
              } else {
                  this.data = data;
                  this.contentLength = totalBytes;
              }
              this.chunkedTransfer = this.contentLength < 0;
              keepAlive = true;
          }
  
          @Override
          public void close() throws IOException {
              if (this.data != null) {
                  this.data.close();
              }
          }
  
          /**
           * Adds given line to the header.
           */
          public void addHeader(String name, String value) {
              this.header.put(name, value);
          }
  
          public InputStream getData() {
              return this.data;
          }
  
          public String getHeader(String name) {
              for (String headerName : header.keySet()) {
                  if (headerName.equalsIgnoreCase(name)) {
                      return header.get(headerName);
                  }
              }
              return null;
          }
  
          public String getMimeType() {
              return this.mimeType;
          }
  
          public Method getRequestMethod() {
              return this.requestMethod;
          }
  
          public IStatus getStatus() {
              return this.status;
          }
  
          public void setGzipEncoding(boolean encodeAsGzip) {
              this.encodeAsGzip = encodeAsGzip;
          }
  
          public void setKeepAlive(boolean useKeepAlive) {
              this.keepAlive = useKeepAlive;
          }
  
          private static boolean headerAlreadySent(Map<String, String> header, String name) {
              boolean alreadySent = false;
              for (String headerName : header.keySet()) {
                  alreadySent |= headerName.equalsIgnoreCase(name);
              }
              return alreadySent;
          }
  
          /**
           * Sends given response to the socket.
           */
          protected void send(OutputStream outputStream) {
              String mime = this.mimeType;
              SimpleDateFormat gmtFrmt = new SimpleDateFormat("E, d MMM yyyy HH:mm:ss 'GMT'", Locale.US);
              gmtFrmt.setTimeZone(TimeZone.getTimeZone("GMT"));
  
              try {
                  if (this.status == null) {
                      throw new Error("sendResponse(): Status can't be null.");
                  }
                  PrintWriter pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8")), false);
                  pw.print("HTTP/1.1 " + this.status.getDescription() + " \r\n");
  
                  if (mime != null) {
                      pw.print("Content-Type: " + mime + "\r\n");
                  }
  
                  if (this.header == null || this.header.get("Date") == null) {
                      pw.print("Date: " + gmtFrmt.format(new Date()) + "\r\n");
                  }
  
                  if (this.header != null) {
                      for (String key : this.header.keySet()) {
                          String value = this.header.get(key);
                          pw.print(key + ": " + value + "\r\n");
                      }
                  }
  
                  if (!headerAlreadySent(header, "connection")) {
                      pw.print("Connection: " + (this.keepAlive ? "keep-alive" : "close") + "\r\n");
                  }
  
                  if (headerAlreadySent(this.header, "content-length")) {
                      encodeAsGzip = false;
                  }
  
                  if (encodeAsGzip) {
                      pw.print("Content-Encoding: gzip\r\n");
                      setChunkedTransfer(true);
                  }
  
                  long pending = this.data != null ? this.contentLength : 0;
                  if (this.requestMethod != Method.HEAD && this.chunkedTransfer) {
                      pw.print("Transfer-Encoding: chunked\r\n");
                  } else if (!encodeAsGzip) {
                      pending = sendContentLengthHeaderIfNotAlreadyPresent(pw, this.header, pending);
                  }
                  pw.print("\r\n");
                  pw.flush();
                  sendBodyWithCorrectTransferAndEncoding(outputStream, pending);
                  outputStream.flush();
                  safeClose(this.data);
              } catch (IOException ioe) {
                  NanoHTTPD.LOG.log(Level.SEVERE, "Could not send response to the client", ioe);
              }
          }
  
          private void sendBodyWithCorrectTransferAndEncoding(OutputStream outputStream, long pending) throws IOException {
              if (this.requestMethod != Method.HEAD && this.chunkedTransfer) {
                  ChunkedOutputStream chunkedOutputStream = new ChunkedOutputStream(outputStream);
                  sendBodyWithCorrectEncoding(chunkedOutputStream, -1);
                  chunkedOutputStream.finish();
              } else {
                  sendBodyWithCorrectEncoding(outputStream, pending);
              }
          }
  
          private void sendBodyWithCorrectEncoding(OutputStream outputStream, long pending) throws IOException {
              if (encodeAsGzip) {
                  GZIPOutputStream gzipOutputStream = new GZIPOutputStream(outputStream);
                  sendBody(gzipOutputStream, -1);
                  gzipOutputStream.finish();
              } else {
                  sendBody(outputStream, pending);
              }
          }
  
          /**
           * Sends the body to the specified OutputStream. The pending parameter
           * limits the maximum amounts of bytes sent unless it is -1, in which
           * case everything is sent.
           *
           * @param outputStream the OutputStream to send data to
           * @param pending      -1 to send everything, otherwise sets a max limit to the
           *                     number of bytes sent
           * @throws IOException if something goes wrong while sending the data.
           */
          private void sendBody(OutputStream outputStream, long pending) throws IOException {
              long BUFFER_SIZE = 16 * 1024;
              byte[] buff = new byte[(int) BUFFER_SIZE];
              boolean sendEverything = pending == -1;
              while (pending > 0 || sendEverything) {
                  long bytesToRead = sendEverything ? BUFFER_SIZE : Math.min(pending, BUFFER_SIZE);
                  int read = this.data.read(buff, 0, (int) bytesToRead);
                  if (read <= 0) {
                      break;
                  }
                  outputStream.write(buff, 0, read);
                  if (!sendEverything) {
                      pending -= read;
                  }
              }
          }
  
          protected static long sendContentLengthHeaderIfNotAlreadyPresent(PrintWriter pw, Map<String, String> header, long size) {
              for (String headerName : header.keySet()) {
                  if (headerName.equalsIgnoreCase("content-length")) {
                      try {
                          return Long.parseLong(header.get(headerName));
                      } catch (NumberFormatException ex) {
                          return size;
                      }
                  }
              }
  
              pw.print("Content-Length: " + size + "\r\n");
              return size;
          }
  
          public void setChunkedTransfer(boolean chunkedTransfer) {
              this.chunkedTransfer = chunkedTransfer;
          }
  
          public void setData(InputStream data) {
              this.data = data;
          }
  
          public void setMimeType(String mimeType) {
              this.mimeType = mimeType;
          }
  
          public void setRequestMethod(Method requestMethod) {
              this.requestMethod = requestMethod;
          }
  
          public void setStatus(IStatus status) {
              this.status = status;
          }
      }
  
      public static final class ResponseException extends Exception {
  
          private static final long serialVersionUID = 6569838532917408380L;
  
          private final Status status;
  
          public ResponseException(Status status, String message) {
              super(message);
              this.status = status;
          }
  
          public ResponseException(Status status, String message, Exception e) {
              super(message, e);
              this.status = status;
          }
  
          public Status getStatus() {
              return this.status;
          }
      }
  
      /**
       * The runnable that will be used for the main listening thread.
       */
      public class ServerRunnable implements Runnable {
  
          private final int timeout;
  
          private IOException bindException;
  
          private boolean hasBinded = false;
  
          private ServerRunnable(int timeout) {
              this.timeout = timeout;
          }
  
          @Override
          public void run() {
              try {
                  myServerSocket.bind(hostname != null ? new InetSocketAddress(hostname, myPort) : new InetSocketAddress(myPort));
                  hasBinded = true;
              } catch (IOException e) {
                  this.bindException = e;
                  return;
              }
              do {
                  try {
                      final Socket finalAccept = NanoHTTPD.this.myServerSocket.accept();
                      if (this.timeout > 0) {
                          finalAccept.setSoTimeout(this.timeout);
                      }
                      final InputStream inputStream = finalAccept.getInputStream();
                      NanoHTTPD.this.asyncRunner.exec(createClientHandler(finalAccept, inputStream));
                  } catch (IOException e) {
                      NanoHTTPD.LOG.log(Level.FINE, "Communication with the client broken", e);
                  }
              } while (!NanoHTTPD.this.myServerSocket.isClosed());
          }
      }
  
      /**
       * A temp file.
       * <p/>
       * <p>
       * Temp files are responsible for managing the actual temporary storage and
       * cleaning themselves up when no longer needed.
       * </p>
       */
      public interface TempFile {
  
          public void delete() throws Exception;
  
          public String getName();
  
          public OutputStream open() throws Exception;
      }
  
      /**
       * Temp file manager.
       * <p/>
       * <p>
       * Temp file managers are created 1-to-1 with incoming requests, to create
       * and cleanup temporary files created as a result of handling the request.
       * </p>
       */
      public interface TempFileManager {
  
          void clear();
  
          public TempFile createTempFile(String filename_hint) throws Exception;
      }
  
      /**
       * Factory to create temp file managers.
       */
      public interface TempFileManagerFactory {
  
          public TempFileManager create();
      }
  
      /**
       * Factory to create ServerSocketFactories.
       */
      public interface ServerSocketFactory {
  
          public ServerSocket create() throws IOException;
  
      }
  
      /**
       * Maximum time to wait on Socket.getInputStream().read() (in milliseconds)
       * This is required as the Keep-Alive HTTP connections would otherwise block
       * the socket reading thread forever (or as long the browser is open).
       */
      public static final int SOCKET_READ_TIMEOUT = 5000;
  
      /**
       * Common MIME type for dynamic content: plain text
       */
      public static final String MIME_PLAINTEXT = "text/plain";
  
      /**
       * Common MIME type for dynamic content: html
       */
      public static final String MIME_HTML = "text/html";
  
      /**
       * Pseudo-Parameter to use to store the actual query string in the
       * parameters map for later re-processing.
       */
      private static final String QUERY_STRING_PARAMETER = "NanoHttpd.QUERY_STRING";
  
      /**
       * logger to log to.
       */
      private static final Logger LOG = Logger.getLogger(NanoHTTPD.class.getName());
  
      /**
       * Hashtable mapping (String)FILENAME_EXTENSION -> (String)MIME_TYPE
       */
      protected static Map<String, String> MIME_TYPES;
  
      public static Map<String, String> mimeTypes() {
          if (MIME_TYPES == null) {
              MIME_TYPES = new HashMap<String, String>();
              MIME_TYPES.put("css", "text/css");
              MIME_TYPES.put("htm", "text/html");
              MIME_TYPES.put("html", "text/html");
              MIME_TYPES.put("xml", "text/xml");
              MIME_TYPES.put("java", "text/x-java-source, text/java");
              MIME_TYPES.put("md", "text/plain");
              MIME_TYPES.put("txt", "text/plain");
              MIME_TYPES.put("asc", "text/plain");
              MIME_TYPES.put("gif", "image/gif");
              MIME_TYPES.put("jpg", "image/jpeg");
              MIME_TYPES.put("jpeg", "image/jpeg");
              MIME_TYPES.put("png", "image/png");
              MIME_TYPES.put("svg", "image/svg+xml");
              MIME_TYPES.put("mp3", "audio/mpeg");
              MIME_TYPES.put("m3u", "audio/mpeg-url");
              MIME_TYPES.put("mp4", "video/mp4");
              MIME_TYPES.put("ogv", "video/ogg");
              MIME_TYPES.put("flv", "video/x-flv");
              MIME_TYPES.put("mov", "video/quicktime");
              MIME_TYPES.put("swf", "application/x-shockwave-flash");
              MIME_TYPES.put("js", "application/javascript");
              MIME_TYPES.put("pdf", "application/pdf");
              MIME_TYPES.put("doc", "application/msword");
              MIME_TYPES.put("ogg", "application/x-ogg");
              MIME_TYPES.put("zip", "application/octet-stream");
              MIME_TYPES.put("exe", "application/octet-stream");
              MIME_TYPES.put("class", "application/octet-stream");
              MIME_TYPES.put("m3u8", "application/vnd.apple.mpegurl");
              MIME_TYPES.put("ts", "video/mp2t");
          }
          return MIME_TYPES;
      }
  
  
      /**
       * Creates an SSLSocketFactory for HTTPS. Pass a loaded KeyStore and an
       * array of loaded KeyManagers. These objects must properly
       * loaded/initialized by the caller.
       */
      public static SSLServerSocketFactory makeSSLSocketFactory(KeyStore loadedKeyStore, KeyManager[] keyManagers) throws IOException {
          SSLServerSocketFactory res = null;
          try {
              TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
              trustManagerFactory.init(loadedKeyStore);
              SSLContext ctx = SSLContext.getInstance("TLS");
              ctx.init(keyManagers, trustManagerFactory.getTrustManagers(), null);
              res = ctx.getServerSocketFactory();
          } catch (Exception e) {
              throw new IOException(e.getMessage());
          }
          return res;
      }
  
      /**
       * Creates an SSLSocketFactory for HTTPS. Pass a loaded KeyStore and a
       * loaded KeyManagerFactory. These objects must properly loaded/initialized
       * by the caller.
       */
      public static SSLServerSocketFactory makeSSLSocketFactory(KeyStore loadedKeyStore, KeyManagerFactory loadedKeyFactory) throws IOException {
          try {
              return makeSSLSocketFactory(loadedKeyStore, loadedKeyFactory.getKeyManagers());
          } catch (Exception e) {
              throw new IOException(e.getMessage());
          }
      }
  
      /**
       * Creates an SSLSocketFactory for HTTPS. Pass a KeyStore resource with your
       * certificate and passphrase
       */
      public static SSLServerSocketFactory makeSSLSocketFactory(String keyAndTrustStoreClasspathPath, char[] passphrase) throws IOException {
          try {
              KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
              InputStream keystoreStream = NanoHTTPD.class.getResourceAsStream(keyAndTrustStoreClasspathPath);
              keystore.load(keystoreStream, passphrase);
              KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
              keyManagerFactory.init(keystore, passphrase);
              return makeSSLSocketFactory(keystore, keyManagerFactory);
          } catch (Exception e) {
              throw new IOException(e.getMessage());
          }
      }
  
      /**
       * Get MIME type from file name extension, if possible
       *
       * @param uri the string representing a file
       * @return the connected mime/type
       */
      public static String getMimeTypeForFile(String uri) {
          int dot = uri.lastIndexOf('.');
          String mime = null;
          if (dot >= 0) {
              mime = mimeTypes().get(uri.substring(dot + 1).toLowerCase());
          }
          return mime == null ? "application/octet-stream" : mime;
      }
  
      private static final void safeClose(Object closeable) {
          try {
              if (closeable != null) {
                  if (closeable instanceof Closeable) {
                      ((Closeable) closeable).close();
                  } else if (closeable instanceof Socket) {
                      ((Socket) closeable).close();
                  } else if (closeable instanceof ServerSocket) {
                      ((ServerSocket) closeable).close();
                  } else {
                      throw new IllegalArgumentException("Unknown object to close");
                  }
              }
          } catch (IOException e) {
              NanoHTTPD.LOG.log(Level.SEVERE, "Could not close", e);
          }
      }
  
      private final String hostname;
  
      private final int myPort;
  
      private volatile ServerSocket myServerSocket;
  
      private ServerSocketFactory serverSocketFactory = new DefaultServerSocketFactory();
  
      private Thread myThread;
  
      /**
       * Pluggable strategy for asynchronously executing requests.
       */
      protected AsyncRunner asyncRunner;
  
      /**
       * Pluggable strategy for creating and cleaning up temporary files.
       */
      private TempFileManagerFactory tempFileManagerFactory;
  
      /**
       * Constructs an HTTP server on given port.
       */
      public NanoHTTPD(int port) {
          this(null, port);
      }
  
      // -------------------------------------------------------------------------------
      // //
      //
      // Threading Strategy.
      //
      // -------------------------------------------------------------------------------
      // //
  
      /**
       * Constructs an HTTP server on given hostname and port.
       */
      public NanoHTTPD(String hostname, int port) {
          this.hostname = hostname;
          this.myPort = port;
          setTempFileManagerFactory(new DefaultTempFileManagerFactory());
          setAsyncRunner(new DefaultAsyncRunner());
      }
  
      /**
       * Forcibly closes all connections that are open.
       */
      public synchronized void closeAllConnections() {
          stop();
      }
  
      /**
       * create a instance of the client handler, subclasses can return a subclass
       * of the ClientHandler.
       *
       * @param finalAccept the socket the cleint is connected to
       * @param inputStream the input stream
       * @return the client handler
       */
      protected ClientHandler createClientHandler(final Socket finalAccept, final InputStream inputStream) {
          return new ClientHandler(inputStream, finalAccept);
      }
  
      /**
       * Instantiate the server runnable, can be overwritten by subclasses to
       * provide a subclass of the ServerRunnable.
       *
       * @param timeout the socet timeout to use.
       * @return the server runnable.
       */
      protected ServerRunnable createServerRunnable(final int timeout) {
          return new ServerRunnable(timeout);
      }
  
      /**
       * Decode parameters from a URL, handing the case where a single parameter
       * name might have been supplied several times, by return lists of values.
       * In general these lists will contain a single element.
       *
       * @param parms original <b>NanoHTTPD</b> parameters values, as passed to the
       *              <code>serve()</code> method.
       * @return a map of <code>String</code> (parameter name) to
       * <code>List&lt;String&gt;</code> (a list of the values supplied).
       */
      protected static Map<String, List<String>> decodeParameters(Map<String, String> parms) {
          return decodeParameters(parms.get(NanoHTTPD.QUERY_STRING_PARAMETER));
      }
  
      // -------------------------------------------------------------------------------
      // //
  
      /**
       * Decode parameters from a URL, handing the case where a single parameter
       * name might have been supplied several times, by return lists of values.
       * In general these lists will contain a single element.
       *
       * @param queryString a query string pulled from the URL.
       * @return a map of <code>String</code> (parameter name) to
       * <code>List&lt;String&gt;</code> (a list of the values supplied).
       */
      protected static Map<String, List<String>> decodeParameters(String queryString) {
          Map<String, List<String>> parms = new HashMap<String, List<String>>();
          if (queryString != null) {
              StringTokenizer st = new StringTokenizer(queryString, "&");
              while (st.hasMoreTokens()) {
                  String e = st.nextToken();
                  int sep = e.indexOf('=');
                  String propertyName = sep >= 0 ? decodePercent(e.substring(0, sep)).trim() : decodePercent(e).trim();
                  if (!parms.containsKey(propertyName)) {
                      parms.put(propertyName, new ArrayList<String>());
                  }
                  String propertyValue = sep >= 0 ? decodePercent(e.substring(sep + 1)) : null;
                  if (propertyValue != null) {
                      parms.get(propertyName).add(propertyValue);
                  }
              }
          }
          return parms;
      }
  
      /**
       * Decode percent encoded <code>String</code> values.
       *
       * @param str the percent encoded <code>String</code>
       * @return expanded form of the input, for example "foo%20bar" becomes
       * "foo bar"
       */
      protected static String decodePercent(String str) {
          String decoded = null;
          try {
              decoded = URLDecoder.decode(str, "UTF8");
          } catch (UnsupportedEncodingException ignored) {
              NanoHTTPD.LOG.log(Level.WARNING, "Encoding not supported, ignored", ignored);
          }
          return decoded;
      }
  
      /**
       * @return true if the gzip compression should be used if the client
       * accespts it. Default this option is on for text content and off
       * for everything. Override this for custom semantics.
       */
      protected boolean useGzipWhenAccepted(Response r) {
          return r.getMimeType() != null && r.getMimeType().toLowerCase().contains("text/");
      }
  
      public final int getListeningPort() {
          return this.myServerSocket == null ? -1 : this.myServerSocket.getLocalPort();
      }
  
      public final boolean isAlive() {
          return wasStarted() && !this.myServerSocket.isClosed() && this.myThread.isAlive();
      }
  
      public ServerSocketFactory getServerSocketFactory() {
          return serverSocketFactory;
      }
  
      public void setServerSocketFactory(ServerSocketFactory serverSocketFactory) {
          this.serverSocketFactory = serverSocketFactory;
      }
  
      public String getHostname() {
          return hostname;
      }
  
      public TempFileManagerFactory getTempFileManagerFactory() {
          return tempFileManagerFactory;
      }
  
      /**
       * Call before start() to serve over HTTPS instead of HTTP
       */
      public void makeSecure(SSLServerSocketFactory sslServerSocketFactory, String[] sslProtocols) {
          this.serverSocketFactory = new SecureServerSocketFactory(sslServerSocketFactory, sslProtocols);
      }
  
      /**
       * Create a response with unknown length (using HTTP 1.1 chunking).
       */
      public static Response newChunkedResponse(IStatus status, String mimeType, InputStream data) {
          return new Response(status, mimeType, data, -1);
      }
  
      /**
       * Create a response with known length.
       */
      public static Response newFixedLengthResponse(IStatus status, String mimeType, InputStream data, long totalBytes) {
          return new Response(status, mimeType, data, totalBytes);
      }
  
      /**
       * Create a text response with known length.
       */
      public static Response newFixedLengthResponse(IStatus status, String mimeType, String txt) {
          if (txt == null) {
              return newFixedLengthResponse(status, mimeType, new ByteArrayInputStream(new byte[0]), 0);
          } else {
              byte[] bytes;
              try {
                  bytes = txt.getBytes("UTF-8");
              } catch (UnsupportedEncodingException e) {
                  NanoHTTPD.LOG.log(Level.SEVERE, "encoding problem, responding nothing", e);
                  bytes = new byte[0];
              }
              return newFixedLengthResponse(status, mimeType, new ByteArrayInputStream(bytes), bytes.length);
          }
      }
  
      /**
       * Create a text response with known length.
       */
      public static Response newFixedLengthResponse(String msg) {
          return newFixedLengthResponse(Status.OK, NanoHTTPD.MIME_HTML, msg);
      }
  
      /**
       * Override this to customize the server.
       * <p/>
       * <p/>
       * (By default, this returns a 404 "Not Found" plain text error response.)
       *
       * @param session The HTTP session
       * @return HTTP response, see class Response for details
       */
      public Response serve(IHTTPSession session) {
          Map<String, String> files = new HashMap<String, String>();
          Method method = session.getMethod();
          if (Method.PUT.equals(method) || Method.POST.equals(method)) {
              try {
                  session.parseBody(files);
              } catch (IOException ioe) {
                  return newFixedLengthResponse(Status.INTERNAL_ERROR, NanoHTTPD.MIME_PLAINTEXT, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage());
              } catch (ResponseException re) {
                  return newFixedLengthResponse(re.getStatus(), NanoHTTPD.MIME_PLAINTEXT, re.getMessage());
              }
          }
  
          Map<String, String> parms = session.getParms();
          parms.put(NanoHTTPD.QUERY_STRING_PARAMETER, session.getQueryParameterString());
          return serve(session.getUri(), method, session.getHeaders(), parms, files);
      }
  
      /**
       * Override this to customize the server.
       * <p/>
       * <p/>
       * (By default, this returns a 404 "Not Found" plain text error response.)
       *
       * @param uri     Percent-decoded URI without parameters, for example
       *                "/index.cgi"
       * @param method  "GET", "POST" etc.
       * @param parms   Parsed, percent decoded parameters from URI and, in case of
       *                POST, data.
       * @param headers Header entries, percent decoded
       * @return HTTP response, see class Response for details
       */
      @Deprecated
      public Response serve(String uri, Method method, Map<String, String> headers, Map<String, String> parms, Map<String, String> files) {
          return newFixedLengthResponse(Status.NOT_FOUND, NanoHTTPD.MIME_PLAINTEXT, "Not Found");
      }
  
      /**
       * Pluggable strategy for asynchronously executing requests.
       *
       * @param asyncRunner new strategy for handling threads.
       */
      public void setAsyncRunner(AsyncRunner asyncRunner) {
          this.asyncRunner = asyncRunner;
      }
  
      /**
       * Pluggable strategy for creating and cleaning up temporary files.
       *
       * @param tempFileManagerFactory new strategy for handling temp files.
       */
      public void setTempFileManagerFactory(TempFileManagerFactory tempFileManagerFactory) {
          this.tempFileManagerFactory = tempFileManagerFactory;
      }
  
      /**
       * Start the server.
       *
       * @throws IOException if the socket is in use.
       */
      public void start() throws IOException {
          start(NanoHTTPD.SOCKET_READ_TIMEOUT);
      }
  
      /**
       * Starts the server (in setDaemon(true) mode).
       */
      public void start(final int timeout) throws IOException {
          start(timeout, true);
      }
  
      /**
       * Start the server.
       *
       * @param timeout timeout to use for socket connections.
       * @param daemon  start the thread daemon or not.
       * @throws IOException if the socket is in use.
       */
      public void start(final int timeout, boolean daemon) throws IOException {
          this.myServerSocket = this.getServerSocketFactory().create();
          this.myServerSocket.setReuseAddress(true);
  
          ServerRunnable serverRunnable = createServerRunnable(timeout);
          this.myThread = new Thread(serverRunnable);
          this.myThread.setDaemon(daemon);
          this.myThread.setName("NanoHttpd Main Listener");
          this.myThread.start();
          while (!serverRunnable.hasBinded && serverRunnable.bindException == null) {
              try {
                  Thread.sleep(10L);
              } catch (Throwable e) {
                  // on android this may not be allowed, that's why we
                  // catch throwable the wait should be very short because we are
                  // just waiting for the bind of the socket
              }
          }
          if (serverRunnable.bindException != null) {
              throw serverRunnable.bindException;
          }
      }
  
      /**
       * Stop the server.
       */
      public void stop() {
          try {
              safeClose(this.myServerSocket);
              this.asyncRunner.closeAll();
              if (this.myThread != null) {
                  this.myThread.join();
              }
          } catch (Exception e) {
              NanoHTTPD.LOG.log(Level.SEVERE, "Could not stop all connections", e);
          }
      }
  
      public final boolean wasStarted() {
          return this.myServerSocket != null && this.myThread != null;
      }
  }
  