Java Socket setTrafficClass() 方法

2025 年 3 月 25 日 | 阅读 2 分钟

Java Socket 类的 setTrafficClass() 方法用于设置从指定套接字发送的数据包的 IP 头中的流量类别或服务类型。参数 (tc) 的值应在 0 到 255 之间 (0<=tc<=255)，否则将抛出 IllegalArgumentException。

语法

参数

参数 'tc' 表示一个整数位值。

不适用

抛出

SocketException - 如果在设置流量类别或服务类型时发生错误。

示例 1

import java.io.IOException;
import java.net.*;
public class JavaSocketSetTrafficClassExample1  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //integer value for the bitset.
        //tc should be in the range from 0 to 255(0<=tc<=255) else an IllegalArgumentException will be thrown
        int tc=98;
        //setTrafficClass() sets the traffic class or type-of-service in the IP header for packets sent from the specified socket
        socket.setTrafficClass(tc);
        //getTcpNoDelay() returns the setting for SO_TIMEOUT option
        System.out.println("Traffic class: "+socket.getTrafficClass());
    }
}

输出

Traffic class: 98

示例 2

import java.io.IOException;
import java.net.*;
public class JavaSocketSetTraffiClassExample2  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //integer value for the bitset.
        //tc should be in the range from 0 to 255(0<=tc<=255) else an IllegalArgumentException will be thrown
        int tc=-98;
        //setTrafficClass() sets the traffic class or type-of-service in the IP header for packets sent from the specified socket
        socket.setTrafficClass(tc);
        //getTcpNoDelay() returns the setting for SO_TIMEOUT option
        System.out.println("Traffic class: "+socket.getTrafficClass());
    }
}

输出

Exception in thread "main" java.lang.IllegalArgumentException: tc is not in range 0 -- 255
	at java.net.Socket.setTrafficClass(Socket.java:1377)
	at com.tpointtech.JavaSocketSetTrafficClassExample2.main(JavaSocketSetTrafficClassExample2.java:13)

示例 3

import java.io.IOException;
import java.net.*;
public class JavaSocketSetTrafficClassExample3  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //closing the socket
        socket.close();
        //integer value for the bitset.
        int tc=98;
        //setTrafficClass() sets the traffic class or type-of-service in the IP header for packets sent from the specified socket
        //it will throw an error, as the socket is already closed
        socket.setTrafficClass(tc);
        //getTcpNoDelay() returns the setting for SO_TIMEOUT option
        System.out.println("Traffic class: "+socket.getTrafficClass());
    }
}

输出

Exception in thread "main" java.net.SocketException: Socket is closed
	at java.net.Socket.setTrafficClass(Socket.java:1380)
	at com.tpointtech.JavaSocketSetTrafficClassExample3.main(JavaSocketSetTrafficClassExample3.java:15)

下一主题Java Socket 类

Java Socket setTrafficClass() 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 setTrafficClass() 方法

语法

参数

返回

抛出

示例 1

示例 2

示例 3

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