Java Socket getSendBufferSize() 方法

2025 年 3 月 25 日 | 阅读 2 分钟

Java Socket 类的 getSendBufferSize() 方法返回此套接字上用于输出的平台使用的缓冲区大小 (SO_SNDBUF)。

语法

参数

不适用

getSendBufferSize() 方法返回指定套接字的 SO_SNDBUF 选项的值。

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 JavaSocketGetSendBufferSizeExample1  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //setting the send buffer size or SO_SNDBUF option with the specified value
        socket.setSendBufferSize(67);
        //getSendBufferSize() method returns the buffer size(SO_SNDBUF) used by the platform for output
        System.out.println("Send Buffer size: "+socket.getSendBufferSize());
    }
}

输出

Send Buffer size: 67

示例 2

import java.io.IOException;
import java.net.*;
public class JavaSocketGetSendBufferSizeExample2  {
    public static void main(String[] args) throws IOException {
        Socket socket = new Socket();
        //getSendBufferSize() method returns the buffer size(SO_SNDBUF) used by the platform for output
        //by default the getSendBufferSize() method returns 65536
        System.out.println("Send Buffer size: "+socket.getSendBufferSize());
    }
}

输出

Send Buffer size: 65536

示例 3

import java.io.IOException;
import java.net.*;
public class JavaSocketGetSendBufferSizeExample3  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //setting the send buffer size or SO_SNDBUF option with the specified value
        //the buffer size should be greater than 0, else it will throw an error
        socket.setSendBufferSize(0);
        //getSendBufferSize() method returns the buffer size(SO_SNDBUF) used by the platform for output
        System.out.println("Send Buffer size: "+socket.getSendBufferSize());
    }
}

输出

Exception in thread "main" java.lang.IllegalArgumentException: negative send size
	at java.net.Socket.setSendBufferSize(Socket.java:1193)
	at com.tpointtech.JavaSocketGetSendBufferSizeExample3.main(JavaSocketGetSendBufferSizeExample3.java:11)

下一主题Java Socket 类

Java Socket getSendBufferSize() 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 getSendBufferSize() 方法

语法

参数

返回

抛出

示例 1

示例 2

示例 3

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