DatagramSocket.receive() 失败并出现意外的 SocketException

发布于 2024-10-08 03:44:16 字数 502 浏览 7 评论 0原文

对于未连接且绑定的 DatagramSocket，接收方法调用（禁用 SO_TIMEOUT）意外失败，并出现以下异常。

java.net.SocketException: socket closed  
 at java.net.PlainDatagramSocketImpl.receive0(Native Method)  
 at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)  
 at java.net.DatagramSocket.receive(DatagramSocket.java:712)

另外我还没有显式关闭套接字。
此错误发生在带有 JRE-6 的 Windows Server 2008 中。

即使调用 DatagramSocket.close()，在同一套接字地址重新创建新的 DatagramSocket 也会失败。

您能让我知道错误的可能原因吗？

原文

For an unconnected and bound DatagramSocket, the receive method call (with SO_TIMEOUT disabled) failed unexpectedly with the following Exception.

java.net.SocketException: socket closed  
 at java.net.PlainDatagramSocketImpl.receive0(Native Method)  
 at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)  
 at java.net.DatagramSocket.receive(DatagramSocket.java:712)

Also I've not closed the socket explicitly.
This error occurred in Windows Server 2008 with JRE-6.

Even on calling DatagramSocket.close(), recreating a new DatagramSocket at the same socket address failed too.

Can you please let me know the possible cause(s) for the error?

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倚栏听风 2024-10-15 03:44:16

我也遇到了同样的问题。
检查套接字的“关闭”和“连接状态”字段。

/*
 * Connection state:
 * ST_NOT_CONNECTED = socket not connected
 * ST_CONNECTED = socket connected
 * ST_CONNECTED_NO_IMPL = socket connected but not at impl level
 */
static final int ST_NOT_CONNECTED = 0;
static final int ST_CONNECTED = 1;
static final int ST_CONNECTED_NO_IMPL = 2;

I have met the same problem.
check the socket's "closed" and "connectState" fields.

/*
 * Connection state:
 * ST_NOT_CONNECTED = socket not connected
 * ST_CONNECTED = socket connected
 * ST_CONNECTED_NO_IMPL = socket connected but not at impl level
 */
static final int ST_NOT_CONNECTED = 0;
static final int ST_CONNECTED = 1;
static final int ST_CONNECTED_NO_IMPL = 2;

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