Socket Java设置超时时间
2017-07-12 16:53
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Socket Java设置超时时间
Socket Client Example// File Name GreetingClient.java import java.net.*; import java.io.*; public class GreetingClient { public static void main(String [] args) { String serverName = args[0]; int port = Integer.parseInt(args[1]); try { System.out.println("Connecting to " + serverName + " on port " + port); Socket client = new Socket(serverName, port); System.out.println("Just connected to " + client.getRemoteSocketAddress()); OutputStream outToServer = client.getOutputStream(); DataOutputStream out = new DataOutputStream(outToServer); out.writeUTF("Hello from " + client.getLocalSocketAddress()); InputStream inFromServer = client.getInputStream(); DataInputStream in = new DataInputStream(inFromServer); System.out.println("Server says " + in.readUTF()); client.close(); }catch(IOException e) { e.printStackTrace(); } } }1
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Socket Server Example
连接端口自定义,通过arg设置
// File Name GreetingServer.java import java.net.*; import java.io.*; public class GreetingServer extends Thread { private ServerSocket serverSocket; public GreetingServer(int port) throws IOException { serverSocket = new ServerSocket(port); serverSocket.setSoTimeout(10000); } public void run() { while(true) { try { System.out.println("Waiting for client on port " + serverSocket.getLocalPort() + "..."); Socket server = serverSocket.accept(); System.out.println("Just connected to " + server.getRemoteSocketAddress()); DataInputStream in = new DataInputStream(server.getInputStream()); System.out.println(in.readUTF()); DataOutputStream out = new DataOutputStream(server.getOutputStream()); out.writeUTF("Thank you for connecting to " + server.getLocalSocketAddress() + "\nGoodbye!"); server.close(); }catch(SocketTimeoutException s) { System.out.println("Socket timed out!"); break; }catch(IOException e) { e.printStackTrace(); break; } } } public static void main(String [] args) { int port = Integer.parseInt(args[0]); try { Thread t = new GreetingServer(port); t.start(); }catch(IOException e) { e.printStackTrace(); } } }1
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设置超时
1.设置连接请求超时时间,如果连接无响应,则抛出超时异常
2.设置读操作超时时长,如过读取数据流时间超时,则抛出异常
Socket socket = new Socket(); socket.connect(new InetSocketAddress(ipAddress, port), 1000);//设置连接请求超时时间10 s socket.setSoTimeout(30000);//设置读操作超时时间30 s1
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注意:socket.setSoTimeout必须在connect之后设置,不然将不会生效。读操作将永远不会超时。
参考:
https://www.tutorialspoint.com/java/java_networking.htm
http://stackoverflow.com/questions/4969760/set-timeout-for-socket
http://docs.oracle.com/javase/7/docs/api/java/net/Socket.html
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