java.net.ServerSocket.getLocalPort()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中java.net.ServerSocket.getLocalPort()方法的一些代码示例，展示了ServerSocket.getLocalPort()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ServerSocket.getLocalPort()方法的具体详情如下：
包路径：java.net.ServerSocket
类名称：ServerSocket
方法名：getLocalPort

ServerSocket.getLocalPort介绍

[英]Gets the local port of this server socket or -1 if the socket is unbound.
[中]获取此服务器套接字的本地端口，如果套接字未绑定，则获取-1。

代码示例

代码示例来源：origin: apache/incubator-dubbo

  1. public static int getAvailablePort() {
  2.   try (ServerSocket ss = new ServerSocket()) {
  3.     ss.bind(null);
  4.     return ss.getLocalPort();
  5.   } catch (IOException e) {
  6.     return getRandomPort();
  7.   }
  8. }

代码示例来源：origin: apache/zeppelin

  1. public static int findRandomAvailablePortOnAllLocalInterfaces() throws IOException {
  2.  int port;
  3.  try (ServerSocket socket = new ServerSocket(0);) {
  4.   port = socket.getLocalPort();
  5.   socket.close();
  6.  }
  7.  return port;
  8. }

代码示例来源：origin: Alluxio/alluxio

  1. /** This method will close the socket upon first initialization. */
  2. protected InetSocketAddress getWebAddressFromBindSocket() throws IOException {
  3.  Preconditions.checkNotNull(mWebBindSocket, "mWebBindSocket");
  4.  InetSocketAddress socketAddr = new InetSocketAddress(mWebBindSocket.getInetAddress(),
  5.    mWebBindSocket.getLocalPort());
  6.  mWebBindSocket.close();
  7.  return socketAddr;
  8. }

代码示例来源：origin: alibaba/jstorm

  1. /**
  2.  * Check whether the port is available to bind
  3.  *
  4.  * @param port port
  5.  * @return -1 means unavailable, otherwise available
  6.  * @throws IOException
  7.  */
  8. public static int tryPort(int port) throws IOException {
  9.   ServerSocket socket = new ServerSocket(port);
  10.   int rtn = socket.getLocalPort();
  11.   socket.close();
  12.   return rtn;
  13. }

代码示例来源：origin: apache/incubator-dubbo

  1. public static int getAvailablePort() {
  2.   try (ServerSocket ss = new ServerSocket()) {
  3.     ss.bind(null);
  4.     return ss.getLocalPort();
  5.   } catch (IOException e) {
  6.     return getRandomPort();
  7.   }
  8. }

代码示例来源：origin: apache/geode

  1. /**
  2.  * binds the server socket and gets threads going
  3.  */
  4. private void startAcceptor() throws ConnectionException {
  5.  int localPort;
  6.  int p = this.port;
  7.  createServerSocket();
  8.  try {
  9.   localPort = socket.getLocalPort();
  10.   id = new InetSocketAddress(socket.getInetAddress(), localPort);
  11.   stopped = false;
  12.   thread = new LoggingThread("P2P Listener Thread " + id, this);
  13.   try {
  14.    thread.setPriority(Thread.MAX_PRIORITY);
  15.   } catch (Exception e) {
  16.    logger.info("unable to set listener priority: {}", e.getMessage());
  17.   }
  18.   if (!Boolean.getBoolean("p2p.test.inhibitAcceptor")) {
  19.    thread.start();
  20.   } else {
  21.    logger.fatal(
  22.      "p2p.test.inhibitAcceptor was found to be set, inhibiting incoming tcp/ip connections");
  23.    socket.close();
  24.   }
  25.  } catch (IOException io) {
  26.   String s = "While creating ServerSocket on port " + p;
  27.   throw new ConnectionException(s, io);
  28.  }
  29.  this.port = localPort;
  30. }

代码示例来源：origin: apache/hive

  1. /**
  2.  * Finds a free port on the machine.
  3.  *
  4.  * @return
  5.  * @throws IOException
  6.  */
  7. public static int findFreePort() throws IOException {
  8.  ServerSocket socket= new ServerSocket(0);
  9.  int port = socket.getLocalPort();
  10.  socket.close();
  11.  return port;
  12. }

代码示例来源：origin: stackoverflow.com

  1. ServerSocket s = new ServerSocket(0);
  2. System.out.println("listening on port: " + s.getLocalPort());

代码示例来源：origin: apache/hive

  1. public static int findFreePort() throws IOException {
  2.   ServerSocket socket= new ServerSocket(0);
  3.   int port = socket.getLocalPort();
  4.   socket.close();
  5.   return port;
  6.  }
  7. }

代码示例来源：origin: OryxProject/oryx

  1. /**
  2.  * Binds to a free ephemeral port, and then releases it. The returned port is quite likely
  3.  * to be free for use after this, but is not entirely guaranteed to be.
  4.  *
  5.  * @return a (probably) free ephemeral port
  6.  * @throws IOException if an error occurs while binding to a port
  7.  */
  8. public static int chooseFreePort() throws IOException {
  9.  try (ServerSocket socket = new ServerSocket(0, 0)) {
  10.   return socket.getLocalPort();
  11.  }
  12. }

代码示例来源：origin: alibaba/mdrill

  1. /**
  2.  * ԴãжǷ԰ض˿
  3.  * 
  4.  * @param port
  5.  * @return
  6.  * @throws IOException
  7.  */
  8. public static int try_port(int port) throws IOException {
  9.   ServerSocket socket = new ServerSocket(port);
  10.   int rtn = socket.getLocalPort();
  11.   socket.close();
  12.   return rtn;
  13. }

代码示例来源：origin: SonarSource/sonarqube

  1. int getAvailable(InetAddress address) {
  2.   try (ServerSocket socket = new ServerSocket(0, 50, address)) {
  3.    return socket.getLocalPort();
  4.   } catch (IOException e) {
  5.    throw new IllegalStateException("Fail to find an available port on " + address, e);
  6.   }
  7.  }
  8. }

代码示例来源：origin: btraceio/btrace

  1. private static int findFreePort() {
  2.     ServerSocket server = null;
  3.     int port = 0;
  4.     try {
  5.       server = new ServerSocket(0);
  6.       port = server.getLocalPort();
  7.     } catch (IOException e) {
  8.       port = DEFAULT_PORT;
  9.     } finally {
  10.       try {
  11.         server.close();
  12.       } catch (Exception e) {
  13.         // ignore
  14.       }
  15.     }
  16.     return port;
  17.   }
  18. }

代码示例来源：origin: apache/incubator-gobblin

  1. @Override
  2. public int random() throws Exception {
  3.   try (ServerSocket serverSocket = new ServerSocket(0)) {
  4.    return serverSocket.getLocalPort();
  5.   }
  6. }

代码示例来源：origin: jamesdbloom/mockserver

  1. public static int findFreePort() {
  2.     int port;
  3.     try {
  4.       ServerSocket server = new ServerSocket(0);
  5.       port = server.getLocalPort();
  6.       server.close();
  7.       // allow time for the socket to be released
  8.       TimeUnit.MILLISECONDS.sleep(250);
  9.     } catch (Exception e) {
  10.       throw new RuntimeException("Exception while trying to find a free port", e);
  11.     }
  12.     return port;
  13.   }
  14. }

代码示例来源：origin: apache/incubator-gobblin

  1. @Override
  2.  public int specific(int port) throws Exception {
  3.   try (ServerSocket serverSocket = new ServerSocket(port)) {
  4.    return serverSocket.getLocalPort();
  5.   }
  6.  }
  7. }

代码示例来源：origin: apache/hive

  1. /**
  2.  * Finds a free port on the machine, but allow the
  3.  * ability to specify a port number to not use, no matter what.
  4.  */
  5. public static int findFreePortExcepting(int portToExclude) throws IOException {
  6.  ServerSocket socket1 = null;
  7.  ServerSocket socket2 = null;
  8.  try {
  9.   socket1 = new ServerSocket(0);
  10.   socket2 = new ServerSocket(0);
  11.   if (socket1.getLocalPort() != portToExclude) {
  12.    return socket1.getLocalPort();
  13.   }
  14.   // If we're here, then socket1.getLocalPort was the port to exclude
  15.   // Since both sockets were open together at a point in time, we're
  16.   // guaranteed that socket2.getLocalPort() is not the same.
  17.   return socket2.getLocalPort();
  18.  } finally {
  19.   if (socket1 != null){
  20.    socket1.close();
  21.   }
  22.   if (socket2 != null){
  23.    socket2.close();
  24.   }
  25.  }
  26. }

代码示例来源：origin: go-lang-plugin-org/go-lang-idea-plugin

  1. private static int findFreePort() {
  2.   try(ServerSocket socket = new ServerSocket(0)) {
  3.    socket.setReuseAddress(true);
  4.    return socket.getLocalPort();
  5.   }
  6.   catch (Exception ignore) {
  7.   }
  8.   throw new IllegalStateException("Could not find a free TCP/IP port to start dlv");
  9.  }
  10. }

代码示例来源：origin: org.apache.hadoop/hadoop-common

  1. /**
  2.  * Return a free port number. There is no guarantee it will remain free, so
  3.  * it should be used immediately.
  4.  *
  5.  * @returns A free port for binding a local socket
  6.  */
  7. public static int getFreeSocketPort() {
  8.  int port = 0;
  9.  try {
  10.   ServerSocket s = new ServerSocket(0);
  11.   port = s.getLocalPort();
  12.   s.close();
  13.   return port;
  14.  } catch (IOException e) {
  15.   // Could not get a free port. Return default port 0.
  16.  }
  17.  return port;
  18. }

代码示例来源：origin: apache/flink

  1. /**
  2.  * Find a non-occupied port.
  3.  *
  4.  * @return A non-occupied port.
  5.  */
  6. public static int getAvailablePort() {
  7.   for (int i = 0; i < 50; i++) {
  8.     try (ServerSocket serverSocket = new ServerSocket(0)) {
  9.       int port = serverSocket.getLocalPort();
  10.       if (port != 0) {
  11.         return port;
  12.       }
  13.     }
  14.     catch (IOException ignored) {}
  15.   }
  16.   throw new RuntimeException("Could not find a free permitted port on the machine.");
  17. }

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