Java Socket getTcpNoDelay() 方法

2025 年 3 月 25 日 | 阅读 2 分钟

Java Socket 类的 getTcpNoDelay() 方法在 SO_TIMEOUT 选项启用时返回其设置，否则返回 false。

语法

参数

不适用

如果 TCP_NODELAY 已启用，getTcpNoDelay() 方法将返回布尔值“true”。

抛出

SocketException - 如果底层协议（如 TCP 错误）存在错误。

示例 1

import java.io.IOException;
import java.net.*;
public class JavaSocketGetTcpNoDelayExample1  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //enabling the SO_TIMEOUT option
        boolean on=true;
        //setTcpNoDelay() method enables or disables the SO_TIMEOUT option
        socket.setTcpNoDelay(on);
        //getTcpNoDelay() returns the setting for SO_TIMEOUT option
        System.out.println("SO_TIMEOUT option is enabled: "+socket.getTcpNoDelay());
    }
}

输出

SO_TIMEOUT option is enabled: true

示例 2

import java.io.IOException;
import java.net.*;
public class JavaSocketGetTcpNoDelayExample2  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //getTcpNoDelay() returns the setting for SO_TIMEOUT option
        //the default set for getTcpNoDelay() option is false
        System.out.println("SO_TIMEOUT option is enabled: "+socket.getTcpNoDelay());
    }
}

输出

SO_TIMEOUT option is enabled: false

示例 3

import java.io.IOException;
import java.net.*;
public class JavaSocketGetTcpNoDelayExample3  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //closing the socket
        socket.close();
        //enabling the SO_TIMEOUT option
        boolean on=true;
        //setTcpNoDelay() method enables or disables the SO_TIMEOUT option
        socket.setTcpNoDelay(on);
        //getTcpNoDelay() returns the setting for SO_TIMEOUT option
        //it will return an error, as the socket is already closed
        System.out.println("SO_TIMEOUT option is enabled: "+socket.getTcpNoDelay());
    }
}

输出

Exception in thread "main" java.net.SocketException: Socket is closed
	at java.net.Socket.setTcpNoDelay(Socket.java:979)
	at com.tpointtech.JavaSocketGetTcpNoDelayExample3.main(JavaSocketGetTcpNoDelayExample3.java:14)

下一主题Java Socket 类

Java Socket getTcpNoDelay() 方法

语法

参数

返回

抛出

示例 1

示例 2

示例 3

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Java Socket getTcpNoDelay() 方法

语法

参数

返回

抛出

示例 1

示例 2

示例 3

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