LINUX创建套接字的发送接收缓存的大小

[xunis]

	protected static final int m_iMaxSize = 20480;
	protected static DatagramSocket m_socket;
	protected static int m_timeout = 3000;
	protected static int m_Port = 5555;
	protected static String m_Ip ="192.168.30.5";
	private static byte[] datarecv = new byte[m_iMaxSize + 120];
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			m_Ip = args[0];
			send s = new send();
			m_socket = new DatagramSocket(m_Port, InetAddress.getByName(m_Ip));
			int b = m_socket.getSendBufferSize();
			int rb = m_socket.getReceiveBufferSize();
			System.out.println("default SendBufferSize=" + b);
			System.out.println("default ReceiveBufferSize=" + rb);
			m_socket.setSendBufferSize(m_iMaxSize*1000);
			m_socket.setReceiveBufferSize(m_iMaxSize*1000);
			System.out.println("set SendBufferSize="+m_socket.getSendBufferSize());
			System.out.println("set ReceiveBufferSize="+m_socket.getReceiveBufferSize());
			
			s.start();
		} catch (Exception e) {
			System.out.println(e.toString());
		}
		
	}

WINDOWS平台运行结果
default SendBufferSize=65536
default ReceiveBufferSize=65536
set SendBufferSize=20480000
set ReceiveBufferSize=20480000

LINUX平台运行结果
default SendBufferSize=64512
default ReceiveBufferSize=64512
set SendBufferSize=131071
set ReceiveBufferSize=131071


LINUX设置套接字缓存有上限？

[想喝咖啡的貓]

lz 霸气。 UDP每个传送包上限跟系统有关，没有统一标准，各家只是约定了一个最小值。 由于UDP的不可靠，一般传包小于等于512字节。

[xunis]

引用 1 楼 AFer198215 的回复:

lz 霸气。 UDP每个传送包上限跟系统有关，没有统一标准，各家只是约定了一个最小值。 由于UDP的不可靠，一般传包小于等于512字节。

哦 万分感谢你的回复 我会考虑使用UDP的风险 谢谢！