Java Socket getSoLinger() 方法

2025 年 3 月 25 日 | 阅读 2 分钟

Java Socket 类的 getSoLinger() 方法在 SO_Linger 选项设置时返回该设置值，如果该选项被禁用则返回 -1。

此方法仅影响 SO_LINGER 设置。

语法

参数

不适用

getSoLinger() 方法返回 SO_LINGER 选项的设置值。

抛出

SocketException - 如果协议中存在错误，例如 TCP 错误。

示例 1

import java.io.IOException;
import java.net.*;
public class JavaSocketGetSoLingerExample1  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //enabling the SO_LINGER option
        boolean on=true;
        //setting the integer value for timeout
        int timeout=90;
        socket.setSoLinger(on,timeout);
        //getSoLinger() method returns the setting if the SO_Linger option is set
        System.out.println("Send Buffer size: "+socket.getSoLinger());
    }
}

输出

Send Buffer size: -1

示例 2

import java.io.IOException;
import java.net.*;
public class JavaSocketGetSoLingerExample2  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //disabling the SO_LINGER option
        boolean on=false;
        //setting the integer value for timeout
        int timeout=90;
        socket.setSoLinger(on,timeout);
        //getSoLinger() method returns the setting if the SO_Linger option is set
        //if the SO_LINGER option is disabled, it returns -1
        System.out.println("Send Buffer size: "+socket.getSoLinger());
    }
} 

输出

Send Buffer size: -1

示例 3

import java.io.IOException;
import java.net.*;
public class JavaSocketGetSoLingerExample3  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //disabling the SO_LINGER option
        boolean on=true;
        //setting the integer value for timeout
        //the timeout value should be greater or equal to 0
        int timeout=-10;
        socket.setSoLinger(on,timeout);
        //getSoLinger() method returns the setting if the SO_Linger option is set
        System.out.println("Send Buffer size: "+socket.getSoLinger());
    }
}

输出

Exception in thread "main" java.lang.IllegalArgumentException: invalid value for SO_LINGER
	at java.net.Socket.setSoLinger(Socket.java:1021)
	at com.tpointtech.JavaSocketGetSoLingerExample3.main(JavaSocketGetSoLingerExample3.java:13)

下一主题Java Socket 类

Java Socket getSoLinger() 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 getSoLinger() 方法

语法

参数

返回

抛出

示例 1

示例 2

示例 3

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