Android 视频投射之NanoHTTPD

Android 视频投射之NanoHTTPD

号称用一个java文件实现Http服务器 有必要对其源码及例子进行分析

 public abstract class NanoHTTPD {

     //异步执行请求
     public interface AsyncRunner {

         void closeAll();

         void closed(ClientHandler clientHandler);

         void exec(ClientHandler code);
     }

     //每一个新的连接创建一个线程
     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) {
 　　　　　　　　　　
                 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);
         }
     }

     //提供对cookies的支持
     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]);
                     }
                 }
             }
         }

         //设置cookies存放时间为一个月
         public void delete(String name) {
             set(name, "-delete-", -30);
         }

         @Override
         public Iterator<String> iterator() {
             return this.cookies.keySet().iterator();
         }

         //从HTTP Headers读取Cookie
         public String read(String name) {
             return this.cookies.get(name);
         }

         public void set(Cookie cookie) {
             this.queue.add(cookie);
         }

         //设置Cookie
         public void set(String name, String value, int expires) {
             this.queue.add(new Cookie(name, value, Cookie.getHTTPTime(expires)));
         }

         public void unloadQueue(Response response) {
             for (Cookie cookie : this.queue) {
                 response.addHeader("Set-Cookie", cookie.getHTTPHeader());
             }
         }
     }

     //每次进来的请求启动一个新的线程
     public static class DefaultAsyncRunner implements AsyncRunner {

         private long requestCount;

         private final List<ClientHandler> running = Collections.synchronizedList(new ArrayList<NanoHTTPD.ClientHandler>());

         //返回目前所有正在运行的客户端
         public List<ClientHandler> getRunning() {
             return running;
         }

         @Override
         public void closeAll() {
             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();
         }
     }

     //默认创建临时文件的策略
     public static class DefaultTempFile implements TempFile {

         private final File file;

         private final OutputStream fstream;

         public DefaultTempFile(String tempdir) throws IOException {
             this.file = File.createTempFile("NanoHTTPD-", "", new File(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;
         }
     }

     //创建和清除临时文件的策略
     public static class DefaultTempFileManager implements TempFileManager {

         private final String tmpdir;

         private final List<TempFile> tempFiles;

         public DefaultTempFileManager() {
             this.tmpdir = System.getProperty("java.io.tmpdir");
             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;
         }
     }

     private class DefaultTempFileManagerFactory implements TempFileManagerFactory {

         @Override
         public TempFileManager create() {
             return new DefaultTempFileManager();
         }
     }

     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;

         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>();
         }

         //解析发送头
         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(Response.Status.BAD_REQUEST, "BAD REQUEST: Syntax error. Usage: GET /example/file.html");
                 }

                 pre.put("method", st.nextToken());

                 if (!st.hasMoreTokens()) {
                     throw new ResponseException(Response.Status.BAD_REQUEST, "BAD REQUEST: Missing URI. Usage: GET /example/file.html");
                 }

                 String uri = st.nextToken();

                 //从URI中解析参数
                 int qmi = uri.indexOf('?');
                 if (qmi >= 0) {
                     decodeParms(uri.substring(qmi + 1), parms);
                     uri = decodePercent(uri.substring(0, qmi));
                 } else {
                     uri = decodePercent(uri);
                 }

                 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(Response.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, 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(Response.Status.BAD_REQUEST, "BAD REQUEST: Content type is multipart/form-data but contains less than two boundary strings.");
                 }

                 final int MAX_HEADER_SIZE = 1024;
                 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);
                     ByteArrayInputStream bais = new ByteArrayInputStream(part_header_buff, 0, len);
                     BufferedReader in = new BufferedReader(new InputStreamReader(bais, Charset.forName("US-ASCII")));

                     // First line is boundary string
                     String mpline = in.readLine();
                     if (!mpline.contains(boundary)) {
                         throw new ResponseException(Response.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();
                     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();
                     }

                     // Read the part data
                     int part_header_len = len - (int) in.skip(MAX_HEADER_SIZE);
                     if (part_header_len >= len - 4) {
                         throw new ResponseException(Response.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));
                     } 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(Response.Status.INTERNAL_ERROR, e.toString());
             }
         }

         /**
          * 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();
                 }

                 if (null != this.remoteIp) {
                     this.headers.put("remote-addr", this.remoteIp);
                     this.headers.put("http-client-ip", this.remoteIp);
                 }

                 // 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);

                 this.method = Method.lookup(pre.get("method"));
                 if (this.method == null) {
                     throw new ResponseException(Response.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(Response.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(Response.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 + 3 < rlen) {
                 if (buf[splitbyte] == '\r' && buf[splitbyte + 1] == '\n' && buf[splitbyte + 2] == '\r' && buf[splitbyte + 3] == '\n') {
                     return splitbyte + 4;
                 }
                 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 Integer.parseInt(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(Response.Status.BAD_REQUEST,
                                     "BAD REQUEST: Content type is multipart/form-data but boundary missing. Usage: GET /example/file.html");
                         }

                         String boundaryStartString = "boundary=";
                         int boundaryContentStart = contentTypeHeader.indexOf(boundaryStartString) + boundaryStartString.length();
                         String boundary = contentTypeHeader.substring(boundaryContentStart, contentTypeHeader.length());
                         if (boundary.startsWith("\"") && boundary.endsWith("\"")) {
                             boundary = boundary.substring(1, boundary.length() - 1);
                         }

                         decodeMultipartFormData(boundary, 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);
             }
         }

         /**
          * 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 Response.Status status;

         public ResponseException(Response.Status status, String message) {
             super(message);
             this.status = status;
         }

         public ResponseException(Response.Status status, String message, Exception e) {
             super(message, e);
             this.status = status;
         }

         public Response.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 {

         void delete() throws Exception;

         String getName();

         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();

         TempFile createTempFile(String filename_hint) throws Exception;
     }

     /**
      * Factory to create temp file managers.
      */
     public interface TempFileManagerFactory {

         TempFileManager create();
     }

     /**
      * 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>();
             loadMimeTypes(MIME_TYPES, "META-INF/nanohttpd/default-mimetypes.properties");
             loadMimeTypes(MIME_TYPES, "META-INF/nanohttpd/mimetypes.properties");
             if (MIME_TYPES.isEmpty()) {
                 LOG.log(Level.WARNING, "no mime types found in the classpath! please provide mimetypes.properties");
             }
         }
         return MIME_TYPES;
     }

     private static void loadMimeTypes(Map<String, String> result, String resourceName) {
         try {
             Enumeration<URL> resources = NanoHTTPD.class.getClassLoader().getResources(resourceName);
             while (resources.hasMoreElements()) {
                 URL url = (URL) resources.nextElement();
                 Properties properties = new Properties();
                 InputStream stream = null;
                 try {
                     stream = url.openStream();
                     properties.load(url.openStream());
                 } catch (IOException e) {
                     LOG.log(Level.SEVERE, "could not load mimetypes from " + url, e);
                 } finally {
                     safeClose(stream);
                 }
                 result.putAll((Map) properties);
             }
         } catch (IOException e) {
             LOG.log(Level.INFO, "no mime types available at " + resourceName);
         }
     };

     /**
      * 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 SSLServerSocketFactory sslServerSocketFactory;

     private String[] sslProtocols;

     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();
     }

     /**
      * Call before start() to serve over HTTPS instead of HTTP
      */
     public void makeSecure(SSLServerSocketFactory sslServerSocketFactory, String[] sslProtocols) {
         this.sslServerSocketFactory = sslServerSocketFactory;
         this.sslProtocols = 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(Response.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(Response.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);
     }

     /**
      * 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 {
         if (this.sslServerSocketFactory != null) {
             SSLServerSocket 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);
             ss.setSoTimeout(timeout);
             this.myServerSocket = ss;
         } else {
             this.myServerSocket = new ServerSocket();
         }
         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;
         }
     }

     /**
      * Starts the server (in setDaemon(true) mode).
      */
     public void start(final int timeout) throws IOException {
         start(timeout, true);
     }

     /**
      * 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;
     }
 }

ServerRunner

 public class ServerRunner {

     /**
      * logger to log to.
      */
     private static final Logger LOG = Logger.getLogger(ServerRunner.class.getName());

     public static void executeInstance(NanoHTTPD server) {
         try {
             server.start(NanoHTTPD.SOCKET_READ_TIMEOUT, false);
         } catch (IOException ioe) {
             System.err.println("Couldn't start server:\n" + ioe);
             System.exit(-1);
         }

         System.out.println("Server started, Hit Enter to stop.\n");

         try {
             System.in.read();
         } catch (Throwable ignored) {
         }

         server.stop();
         System.out.println("Server stopped.\n");
     }

     public static <T extends NanoHTTPD> void run(Class<T> serverClass) {
         try {
             executeInstance(serverClass.newInstance());
         } catch (Exception e) {
             ServerRunner.LOG.log(Level.SEVERE, "Cound nor create server", e);
         }
     }
 }

第一个服务器程序

 public class HelloServer extends NanoHTTPD {

     /**
      * logger to log to.
      */
     private static final Logger LOG = Logger.getLogger(HelloServer.class.getName());

     public static void main(String[] args) {
         ServerRunner.run(HelloServer.class);
     }

     public HelloServer() {
         super(8080);
     }

     @Override
     public Response serve(IHTTPSession session) {
         Method method = session.getMethod();
         String uri = session.getUri();
         HelloServer.LOG.info(method + " '" + uri + "' ");

         String msg = "<html><body><h1>Hello server</h1>\n";
         Map<String, String> parms = session.getParms();
         if (parms.get("username") == null) {
             msg += "<form action='?' method='get'>\n" + "  <p>Your name: <input type='text' name='username'></p>\n" + "</form>\n";
         } else {
             msg += "<p>Hello, " + parms.get("username") + "!</p>";
         }

         msg += "</body></html>\n";

         return newFixedLengthResponse(msg);
     }
 }

另外一个服务器程序

DebugServer

 public class DebugServer extends NanoHTTPD {

     public static void main(String[] args) {
         ServerRunner.run(DebugServer.class);
     }

     public DebugServer() {
         super(8080);
     }

     private void listItem(StringBuilder sb, Map.Entry<String, ? extends Object> entry) {
         sb.append("<li><code><b>").append(entry.getKey()).append("</b> = ").append(entry.getValue()).append("</code></li>");
     }

     @Override
     public Response serve(IHTTPSession session) {
         Map<String, List<String>> decodedQueryParameters = decodeParameters(session.getQueryParameterString());

         StringBuilder sb = new StringBuilder();
         sb.append("<html>");
         sb.append("<head><title>Debug Server</title></head>");
         sb.append("<body>");
         sb.append("<h1>Debug Server</h1>");

         sb.append("<p><blockquote><b>URI</b> = ").append(String.valueOf(session.getUri())).append("<br />");

         sb.append("<b>Method</b> = ").append(String.valueOf(session.getMethod())).append("</blockquote></p>");

         sb.append("<h3>Headers</h3><p><blockquote>").append(toString(session.getHeaders())).append("</blockquote></p>");

         sb.append("<h3>Parms</h3><p><blockquote>").append(toString(session.getParms())).append("</blockquote></p>");

         sb.append("<h3>Parms (multi values?)</h3><p><blockquote>").append(toString(decodedQueryParameters)).append("</blockquote></p>");

         try {
             Map<String, String> files = new HashMap<String, String>();
             session.parseBody(files);
             sb.append("<h3>Files</h3><p><blockquote>").append(toString(files)).append("</blockquote></p>");
         } catch (Exception e) {
             e.printStackTrace();
         }

         sb.append("</body>");
         sb.append("</html>");
         return newFixedLengthResponse(sb.toString());
     }

     private String toString(Map<String, ? extends Object> map) {
         if (map.size() == 0) {
             return "";
         }
         return unsortedList(map);
     }

     private String unsortedList(Map<String, ? extends Object> map) {
         StringBuilder sb = new StringBuilder();
         sb.append("<ul>");
         for (Map.Entry<String, ? extends Object> entry : map.entrySet()) {
             listItem(sb, entry);
         }
         sb.append("</ul>");
         return sb.toString();
     }
 }

项目代码见

https://github.com/huanyi0723/NanoHTTPDCode/