private void passTcpFileDescriptor(
LocalSocket fdSocket,
OutputStream outputStream,
String socketId,
String dstIp,
int dstPort,
int connectTimeout)
throws Exception {
Socket sock = new Socket();
sock.setTcpNoDelay(true); // force file descriptor being created
if (protect(sock)) {
try {
sock.connect(new InetSocketAddress(dstIp, dstPort), connectTimeout);
ParcelFileDescriptor fd = ParcelFileDescriptor.fromSocket(sock);
tcpSockets.put(socketId, sock);
fdSocket.setFileDescriptorsForSend(new FileDescriptor[] {fd.getFileDescriptor()});
outputStream.write('*');
outputStream.flush();
fd.detachFd();
} catch (ConnectException e) {
LogUtils.e("connect " + dstIp + ":" + dstPort + " failed");
outputStream.write('!');
sock.close();
} catch (SocketTimeoutException e) {
LogUtils.e("connect " + dstIp + ":" + dstPort + " failed");
outputStream.write('!');
sock.close();
} finally {
outputStream.flush();
}
} else {
LogUtils.e("protect tcp socket failed");
}
}
public void secondRun() throws Exception {
// Read the JSESSIONID from the previous run
FileInputStream fis = new FileInputStream(JSESSIONID);
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
String jsessionId = br.readLine();
new File(JSESSIONID).delete();
Socket sock = new Socket(host, new Integer(port).intValue());
OutputStream os = sock.getOutputStream();
String get = "GET " + contextRoot + "/ResumeSession" + " HTTP/1.0\n";
System.out.println(get);
os.write(get.getBytes());
String cookie = "Cookie: " + jsessionId + "\n";
os.write(cookie.getBytes());
os.write("\n".getBytes());
InputStream is = sock.getInputStream();
br = new BufferedReader(new InputStreamReader(is));
String line = null;
boolean found = false;
while ((line = br.readLine()) != null) {
System.out.println(line);
if (line.contains(EXPECTED_RESPONSE)) {
found = true;
break;
}
}
if (found) {
stat.addStatus(TEST_NAME, stat.PASS);
} else {
throw new Exception("Wrong response. Expected response: " + EXPECTED_RESPONSE + " not found");
}
}
/**
* Checks if a given file exists and, if not, create it by copying a default template from
* resources; used to create default conf files.
*
* @param file The path of the file that needs to exist
* @param template The path of the template for the file
*/
public static void ensureFileExists(final String file, final String template) {
if (LAUNCHED_FROM_JAR && !Files.exists(Paths.get(file))) {
if (Debug.on) printDebug("[Meta] " + file + " does not exist: creating a default one.");
InputStream stream = Meta.class.getResourceAsStream(template);
if (stream == null) {
printDebug(
"[ WARNING ] template for "
+ template
+ " not found. Won't create a default "
+ file
+ ".");
} else {
int readBytes;
byte[] buffer = new byte[4096];
try (OutputStream outStream = new FileOutputStream(new File(file))) {
while ((readBytes = stream.read(buffer)) > 0) {
outStream.write(buffer, 0, readBytes);
}
if (Debug.on)
printDebug("[Meta] created default file " + file + " from " + template + ".");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
stream.close();
} catch (IOException ignore) {
}
}
}
} else {
if (Meta.LAUNCHED_FROM_JAR && Debug.on) printDebug("[Meta] file exists: " + file + ".");
}
}
public void firstRun() throws Exception {
Socket sock = new Socket(host, new Integer(port).intValue());
OutputStream os = sock.getOutputStream();
String get = "GET " + contextRoot + "/test.jsp" + " HTTP/1.0\n";
System.out.println(get);
os.write(get.getBytes());
os.write("\n".getBytes());
InputStream is = sock.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
// Get the JSESSIONID from the response
String line = null;
while ((line = br.readLine()) != null) {
System.out.println(line);
if (line.startsWith("Set-Cookie:") || line.startsWith("Set-cookie:")) {
break;
}
}
if (line == null) {
throw new Exception("Missing Set-Cookie response header");
}
String jsessionId = getSessionIdFromCookie(line, JSESSIONID);
// Store the JSESSIONID in a file
FileOutputStream fos = new FileOutputStream(JSESSIONID);
OutputStreamWriter osw = new OutputStreamWriter(fos);
osw.write(jsessionId);
osw.close();
stat.addStatus(TEST_NAME, stat.PASS);
}
private void invokeJsp() throws Exception {
Socket sock = new Socket(host, new Integer(port).intValue());
OutputStream os = sock.getOutputStream();
String get = "GET " + contextRoot + "/jsp/test1.jsp" + " HTTP/1.0\n";
System.out.println(get);
os.write(get.getBytes());
os.write("\n".getBytes());
InputStream is = sock.getInputStream();
BufferedReader bis = new BufferedReader(new InputStreamReader(is));
String line = null;
while ((line = bis.readLine()) != null) {
if (line.startsWith("Location:")) {
break;
}
}
if (line != null) {
System.out.println(line);
// Check the path
if (line.startsWith("Location: " + PATH)) {
fail = false;
} else {
System.err.println("Wrong path: " + line + ", expected: " + PATH);
stat.addStatus(TEST_NAME, stat.FAIL);
fail = true;
}
} else {
System.err.println("Missing Location response header");
stat.addStatus(TEST_NAME, stat.FAIL);
}
}
/*
* Define the client side of the test.
*
* If the server prematurely exits, serverReady will be set to true
* to avoid infinite hangs.
*/
void doClientSide() throws Exception {
/*
* Wait for server to get started.
*/
while (!serverReady) {
Thread.sleep(50);
}
SSLSocketFactory sslsf = (SSLSocketFactory) SSLSocketFactory.getDefault();
SSLSocket sslSocket = (SSLSocket) sslsf.createSocket("localhost", serverPort);
InputStream sslIS = sslSocket.getInputStream();
OutputStream sslOS = sslSocket.getOutputStream();
for (int i = 0; i < 10; i++) {
sslOS.write(280);
sslOS.flush();
sslIS.read();
}
for (int i = 0; i < 10; i++) {
sslOS.write(280);
sslOS.flush();
sslIS.read();
}
sslSocket.close();
}
private boolean userPassAuth() throws IOException {
int ver = in.read();
int ulen = in.read();
if (ulen <= 0) throw new SocketException("SOCKS protocol error");
byte[] buf = new byte[ulen];
readBuf(in, buf);
String uname = new String(buf);
String password = null;
ulen = in.read();
if (ulen < 0) throw new SocketException("SOCKS protocol error");
if (ulen > 0) {
buf = new byte[ulen];
readBuf(in, buf);
password = new String(buf);
}
// Check username/password validity here
System.err.println("User: '******'" + password);
if (users.containsKey(uname)) {
String p1 = users.get(uname);
System.err.println("p1 = " + p1);
if (p1.equals(password)) {
out.write(PROTO_VERS);
out.write(REQUEST_OK);
out.flush();
return true;
}
}
out.write(PROTO_VERS);
out.write(NOT_ALLOWED);
out.flush();
return false;
}
public static void main(String args[]) throws Exception {
int count = 0;
ServerSocket serv = null;
InputStream in = null;
OutputStream out = null;
Socket sock = null;
int clientId = 0;
Map<Integer, Integer> totals = new HashMap<Integer, Integer>();
try {
serv = new ServerSocket(8888);
} catch (Exception e) {
e.printStackTrace();
}
while (serv.isBound() && !serv.isClosed()) {
System.out.println("Ready...");
try {
sock = serv.accept();
in = sock.getInputStream();
out = sock.getOutputStream();
char c = (char) in.read();
System.out.print("Server received " + c);
switch (c) {
case 'r':
clientId = in.read();
totals.put(clientId, 0);
out.write(0);
break;
case 't':
clientId = in.read();
int x = in.read();
System.out.print(" for client " + clientId + " " + x);
Integer total = totals.get(clientId);
if (total == null) {
total = 0;
}
totals.put(clientId, total + x);
out.write(totals.get(clientId));
break;
default:
int x2 = in.read();
int y = in.read();
System.out.print(" " + x2 + " " + y);
out.write(x2 + y);
}
System.out.println("");
out.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (out != null) out.close();
if (in != null) in.close();
if (sock != null) sock.close();
}
}
}
/**
* Writes an address to the SOCKS connection in domain-name format (including sending the type
* field).
*
* @param host Host name
* @param port Port
* @throws IOException
*/
protected void writeAddress(String host, int port) throws IOException {
output.write(3); // Domain name
// Actual name
output.write(host.length());
output.write(host.getBytes("ISO-8859-1"));
// Port in network byte order
int port1 = port >> 8, port2 = port & 0xff;
output.write(port1);
output.write(port2);
}
private void invokeJsp() throws Exception {
Socket sock = null;
OutputStream os = null;
InputStream is = null;
BufferedReader bis = null;
try {
sock = new Socket(host, new Integer(port).intValue());
os = sock.getOutputStream();
String get = "GET " + contextRoot + "/jsp/test.jsp HTTP/1.0\n";
System.out.println(get);
os.write(get.getBytes());
os.write("\n".getBytes());
is = sock.getInputStream();
bis = new BufferedReader(new InputStreamReader(is));
boolean found = false;
String line = null;
while ((line = bis.readLine()) != null) {
if (line.endsWith(EXPECTED_ERROR) || line.endsWith(EXPECTED_ERROR_JDK6)) {
found = true;
break;
}
}
if (!found) {
throw new Exception(
"Wrong response, expected: \n"
+ "For JDK 5: "
+ EXPECTED_ERROR
+ '\n'
+ "For JDK 6: "
+ EXPECTED_ERROR_JDK6);
}
} finally {
try {
if (os != null) os.close();
} catch (IOException ex) {
}
try {
if (is != null) is.close();
} catch (IOException ex) {
}
try {
if (sock != null) sock.close();
} catch (IOException ex) {
}
try {
if (bis != null) bis.close();
} catch (IOException ex) {
}
}
}
private void doConnect(InetSocketAddress addr) throws IOException {
dest = new Socket();
try {
dest.connect(addr, 10000);
} catch (SocketTimeoutException ex) {
sendError(HOST_UNREACHABLE);
return;
} catch (ConnectException cex) {
sendError(CONN_REFUSED);
return;
}
// Success
InetAddress iadd = addr.getAddress();
if (iadd instanceof Inet4Address) {
out.write(PROTO_VERS);
out.write(REQUEST_OK);
out.write(0);
out.write(IPV4);
out.write(iadd.getAddress());
} else if (iadd instanceof Inet6Address) {
out.write(PROTO_VERS);
out.write(REQUEST_OK);
out.write(0);
out.write(IPV6);
out.write(iadd.getAddress());
} else {
sendError(GENERAL_FAILURE);
return;
}
out.write((addr.getPort() >> 8) & 0xff);
out.write((addr.getPort() >> 0) & 0xff);
out.flush();
InputStream in2 = dest.getInputStream();
OutputStream out2 = dest.getOutputStream();
Tunnel tunnel = new Tunnel(in2, out);
tunnel.start();
int b = 0;
do {
// Note that the socket might be closed from another thread (the tunnel)
try {
b = in.read();
if (b == -1) {
in.close();
out2.close();
return;
}
out2.write(b);
} catch (IOException ioe) {
}
} while (!client.isClosed());
}
// Send error message then close the streams
private void sendError(int code) {
try {
out.write(PROTO_VERS);
out.write(code);
out.write(0);
out.write(IPV4);
for (int i = 0; i < 6; i++) out.write(0);
out.flush();
out.close();
} catch (IOException ex) {
}
}
private void goGet(String host, int port, String contextPath) throws Exception {
sock = new Socket(host, port);
OutputStream os = sock.getOutputStream();
System.out.println(("GET " + contextPath + " HTTP/1.0\n"));
os.write(("GET " + contextPath + " HTTP/1.0\n").getBytes());
os.write("\n".getBytes());
InputStream is = null;
BufferedReader bis = null;
String line = null;
boolean pass = false;
try {
is = sock.getInputStream();
bis = new BufferedReader(new InputStreamReader(is));
while ((line = bis.readLine()) != null) {
System.out.println(line);
// Check if the filter was invoked
if (EXPECTED_RESPONSE.equals("LLiFFiSSi")) {
pass = true;
break;
}
}
} finally {
try {
if (is != null) {
is.close();
}
} catch (IOException ioe) {
// ignore
}
try {
if (bis != null) {
bis.close();
}
} catch (IOException ioe) {
// ignore
}
}
if (pass) {
System.out.println("security constraint processed");
stat.addStatus(TEST_NAME + " PASSED", stat.PASS);
} else {
System.out.println("security constraint NOT processed");
stat.addStatus(TEST_NAME + " FAILED", stat.FAIL);
}
}
// Negociate the authentication scheme with the client
private void negociate() throws IOException {
int ver = in.read();
int n = in.read();
byte[] buf = null;
if (n > 0) {
buf = new byte[n];
readBuf(in, buf);
}
int scheme = NO_AUTH;
for (int i = 0; i < n; i++) if (buf[i] == USER_PASSW) scheme = USER_PASSW;
out.write(PROTO_VERS);
out.write(scheme);
out.flush();
if (scheme == USER_PASSW) userPassAuth();
}
// Send File
public void sendFile(String chunkName) throws IOException {
OutputStream os = null;
String currentDir = System.getProperty("user.dir");
chunkName = currentDir + "/src/srcFile/" + chunkName;
File myFile = new File(chunkName);
byte[] arrby = new byte[(int) myFile.length()];
try {
FileInputStream fis = new FileInputStream(myFile);
BufferedInputStream bis = new BufferedInputStream(fis);
bis.read(arrby, 0, arrby.length);
os = csocket.getOutputStream();
System.out.println("Sending File.");
os.write(arrby, 0, arrby.length);
os.flush();
System.out.println("File Sent.");
// os.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
// os.close();
}
}
private void downloadInternal(URI address, File destination) throws Exception {
OutputStream out = null;
URLConnection conn;
InputStream in = null;
try {
URL url = address.toURL();
out = new BufferedOutputStream(new FileOutputStream(destination));
conn = url.openConnection();
final String userAgentValue = calculateUserAgent();
conn.setRequestProperty("User-Agent", userAgentValue);
in = conn.getInputStream();
byte[] buffer = new byte[BUFFER_SIZE];
int numRead;
long progressCounter = 0;
while ((numRead = in.read(buffer)) != -1) {
progressCounter += numRead;
if (progressCounter / PROGRESS_CHUNK > 0) {
System.out.print(".");
progressCounter = progressCounter - PROGRESS_CHUNK;
}
out.write(buffer, 0, numRead);
}
} finally {
System.out.println("");
if (in != null) {
in.close();
}
if (out != null) {
out.close();
}
}
}
/**
* Method to update database on the server with new and changed hazards given as a JSONObject
* instance
*
* @param uploadHazards A JSONObject instance with encoded new and update hazards
* @throws IOException
*/
public static void uploadHazards(JSONObject uploadHazards) throws IOException {
// upload hazards in json to php (to use json_decode)
// Hazard parameter should be encoded as json already
// Set Post connection
URL url = new URL(site + "/update.php");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
conn.setRequestMethod("POST");
OutputStream writer = conn.getOutputStream();
writer.write(
uploadHazards.toString().getBytes("UTF-8")); // toString produces compact JSONString
// no white space
writer.close();
// read response (success / error)
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuffer response = new StringBuffer();
String inputLine;
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
}
private static void writePostReply(HttpExchange msg, byte[] buf) throws Exception {
msg.getResponseHeaders().add("Content-Type", "text/xml");
msg.sendResponseHeaders(200, buf.length);
OutputStream out = msg.getResponseBody();
out.write(buf);
out.close();
}
public void run() {
try {
Thread.sleep(10);
byte[] buf = getBuf();
URL url = new URL("http://127.0.0.1:" + port + "/test");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setDoOutput(true);
con.setDoInput(true);
con.setRequestMethod("POST");
con.setRequestProperty(
"Content-Type",
"Multipart/Related; type=\"application/xop+xml\"; boundary=\"----=_Part_0_6251267.1128549570165\"; start-info=\"text/xml\"");
OutputStream out = con.getOutputStream();
out.write(buf);
out.close();
InputStream in = con.getInputStream();
byte[] newBuf = readFully(in);
in.close();
if (buf.length != newBuf.length) {
System.out.println("Doesn't match");
error = true;
}
synchronized (lock) {
++received;
if ((received % 1000) == 0) {
System.out.println("Received=" + received);
}
}
} catch (Exception e) {
// e.printStackTrace();
System.out.print(".");
error = true;
}
}
public static void main(String args[]) {
int size = 1024;
File site = new File("site.html");
OutputStream outStream = null;
InputStream is;
try {
URL url;
byte[] buf;
int ByteRead;
url =
new URL(
"http://zakupki.gov.ru/epz/order/notice/ea44/view/common-info.html?regNumber=0148300015814000370");
System.out.println(url.getFile());
outStream = new BufferedOutputStream(new FileOutputStream(site));
URLConnection uCon = url.openConnection();
is = uCon.getInputStream();
buf = new byte[size];
while ((ByteRead = is.read(buf)) != -1) {
outStream.write(buf, 0, ByteRead);
}
System.out.println("Downloaded Successfully.");
} catch (Exception e) {
e.printStackTrace();
}
}
public void sendMessage(String message) {
checkConnected();
HttpURLConnection outcomeConnection = null;
try {
CLIENT_LOGGER.info("start sending message \"" + message + "\"");
outcomeConnection = prepareOutputConnection();
byte[] buffer = MessageHelper.buildSendMessageRequestBody(message).getBytes();
OutputStream outputStream = outcomeConnection.getOutputStream();
outputStream.write(buffer, 0, buffer.length);
outputStream.close();
outcomeConnection.getInputStream(); // to send data to server
CLIENT_LOGGER.info("message sent");
} catch (ConnectException e) {
logger.error("Connection error. Disconnecting...", e);
CLIENT_LOGGER.error("connection error", e);
disconnect();
} catch (IOException e) {
CLIENT_LOGGER.error("IOException", e);
logger.error("IOException occurred while sending message", e);
} finally {
if (outcomeConnection != null) {
outcomeConnection.disconnect();
}
CLIENT_LOGGER.info("stop sending message \"" + message + "\"");
}
}
public static void ensureExists(File thing, String resource) {
System.err.println("configfile = " + thing);
if (!thing.exists()) {
try {
System.err.println("Creating: " + thing + " from " + resource);
if (resource.indexOf("/") != 0) {
resource = "/" + resource;
}
InputStream is = Config.class.getResourceAsStream(resource);
if (is == null) {
throw new NullPointerException("Can't find resource: " + resource);
}
getParentFile(thing).mkdirs();
OutputStream os = new FileOutputStream(thing);
for (int next = is.read(); next != -1; next = is.read()) {
os.write(next);
}
os.flush();
os.close();
} catch (FileNotFoundException fnfe) {
throw new Error("Can't create resource: " + fnfe.getMessage());
} catch (IOException ioe) {
throw new Error("Can't create resource: " + ioe.getMessage());
}
}
}
public void copyFile(String file1, String file2) {
InputStream inStream = null;
OutputStream outStream = null;
try {
File afile = new File(file1);
File bfile = new File(file2);
inStream = new FileInputStream(afile);
outStream = new FileOutputStream(bfile);
byte[] buffer = new byte[1024];
int length;
// copy the file content in bytes
while ((length = inStream.read(buffer)) > 0) {
outStream.write(buffer, 0, length);
}
inStream.close();
outStream.close();
System.out.println("File is copied successful!");
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws IOException {
int servPort = Integer.parseInt(args[0]);
ServerSocket servSock = new ServerSocket(8080); // cria o socket servidor
int recvMsgSize; // tamanho da msg
byte[] byteBuffer = new byte[BufSize]; // buffer de recebimento
for (; ; ) {
// espera as solicitações dos clientes
Socket clntSock = servSock.accept(); // server aceita a conexão
// imprimi o ip e a porta do servidor
System.out.println(
"Controlando o cliente"
+ clntSock.getInetAddress().getHostAddress()
+ "na porta"
+ clntSock.getPort());
InputStream in = clntSock.getInputStream();
OutputStream out = clntSock.getOutputStream();
while ((recvMsgSize = in.read(byteBuffer))
!= -1) // lê a msg a ser transmitida até estourar o tamanho
out.write(byteBuffer, 0, recvMsgSize);
clntSock.close(); // fecha o socket do cliente
}
}
void serviceClientApp(final Socket socket) throws Throwable {
socket.setTcpNoDelay(true);
final InputStream clientInput = socket.getInputStream();
clientOutput = socket.getOutputStream();
patchNumber = 1;
mainFilePath = readPath(clientInput, false);
byte ok[] = new byte[] {1, 0, 0, 0};
clientOutput.write(ok);
executablePath = readPath(clientInput, true);
new Thread(
new Runnable() {
public void run() {
try {
while (true) {
int bundleLoaded = readInt(clientInput);
}
} catch (IOException e) {
} finally {
try {
socket.close();
} catch (IOException e) {
}
clientOutput = null;
}
}
})
.start();
}
// postToRestfulApi -
// Note: params in the addr field need to be URLEncoded
private String postToRestfulApi(
String addr, String data, HttpServletRequest request, HttpServletResponse response) {
if (localCookie) CookieHandler.setDefault(cm);
String result = "";
try {
URLConnection connection = new URL(API_ROOT + addr).openConnection();
String cookieVal = getBrowserInfiniteCookie(request);
if (cookieVal != null) {
connection.addRequestProperty("Cookie", "infinitecookie=" + cookieVal);
connection.setDoInput(true);
}
connection.setDoOutput(true);
connection.setRequestProperty("Accept-Charset", "UTF-8");
// Post JSON string to URL
OutputStream os = connection.getOutputStream();
byte[] b = data.getBytes("UTF-8");
os.write(b);
// Receive results back from API
InputStream is = connection.getInputStream();
result = IOUtils.toString(is, "UTF-8");
String newCookie = getConnectionInfiniteCookie(connection);
if (newCookie != null && response != null) {
setBrowserInfiniteCookie(response, newCookie, request.getServerPort());
}
} catch (Exception e) {
// System.out.println("Exception: " + e.getMessage());
}
return result;
} // TESTED
void handleRequest(InputStream in, OutputStream out) throws IOException {
boolean newline = false;
StringBuilder sb = new StringBuilder();
while (true) {
int ch = in.read();
if (ch < 0) {
throw new EOFException();
}
sb.append((char) ch);
if (ch == '\r') {
// empty
} else if (ch == '\n') {
if (newline) {
// 2nd newline in a row, end of request
break;
}
newline = true;
} else {
newline = false;
}
}
String request = sb.toString();
if (request.startsWith("GET / HTTP/1.") == false) {
throw new IOException("Invalid request: " + request);
}
out.write("HTTP/1.0 200 OK\r\n\r\n".getBytes());
}
public AuthenticatedSocket(InetAddress ia, int port, MessageDigest md, byte[] secret)
throws IOException, AuthenticationException {
super(ia, port);
try {
OutputStream output = this.getOutputStream();
InputStream input = this.getInputStream();
// Get challenge length
byte[] challengeSize = new byte[4];
input.read(challengeSize);
// Receive random challenge string
byte[] challenge = new byte[Bytes.toInt(challengeSize)];
input.read(challenge);
// Generate MD5 hash
byte[] append = Bytes.append(challenge, secret);
byte[] hash = md.digest(append);
// Send time and hash strings
output.write(hash);
} catch (Exception e) {
throw new AuthenticationException("Authentication failed: " + e.getMessage());
}
}
/**
* ** Writes the specified byte array to the specified socket's output stream ** @param socket The
* socket which's output stream to write to ** @param b The byte array to write to the socket
* output stream ** @throws IOException if an error occurs
*/
protected static void socketWriteBytes(Socket socket, byte b[]) throws IOException {
if ((socket != null) && (b != null)) {
OutputStream output = socket.getOutputStream();
output.write(b);
output.flush();
}
}
/**
* Unwatches an event.
*
* @param name event name
* @throws IOException I/O exception
*/
public void unwatch(final String name) throws IOException {
out.write(11);
send(name);
info = receive();
if (!ok()) throw new IOException(info);
notifiers.remove(name);
}