英文:
Socket Programming in Java using IPv6
问题
以下是您要的翻译内容：
我对网络编程还不熟悉，有几个问题在任何地方都找不到答案。
我不明白在建立连接时，IPv4和IPv6之间的代码是否有区别。
示例代码：
Socket socket = new Socket(“127.0.0.1”， 5000)
上述代码用于IPv4，据我理解。但如果我想使用IPv6，我该如何初始化套接字？
英文:
I am new with the network programming and I have a few questions, that I couldn't find anywhere.
I don't understand if there is a difference in code between IPv4 and IPv6, when establishing connection.
Example Code :
Socket socket = new Socket(“127.0.0.1”, 5000)
The above code is used for IPv4, as I understood. But how do I initialize the socket if I want to use IPv6?
答案1
得分: 0
I don't understand if there is a difference in code between IPv4 and IPv6, when establishing connection.
There is little difference.
-
If you want to use an explicit IPv6 address, you will typically just instantiate the
Socketwith an IP address string in IPv6 syntax. -
If you use a DNS name, then the available network stacks will determine whether you use IPv4 or IPv6:
- If only one stack is supported (by the OS) and available, that is used.
- If both stacks are available, the setting of the
java.net.preferIPv4Stackproperty determines which is used.
For more information, read Networking IPv6 User Guide from the Oracle Java documentation.
For example this: Socket socket = new Socket("127.0.0.1", 5000) is used for IPv4, as I understood. But how do I initialize the socket if I want to use IPv6?
Socket socket = new Socket("::1", 5000);
See also: https://stackoverflow.com/questions/40189084/what-is-ipv6-for-localhost-and-0-0-0-0
英文:
> I don't understand if there is a difference in code between ipv4 and ipv6, when establishing connection.
There is little difference.
-
If you want to use an explicit IPv6 address, you will typically just instantiate the
Socketwith a IP address string in IPv6 syntax. -
If you use a DNS name, then the available network stacks will determine whether you use IPv4 or IPv6:
- If only one stack is supported (by the OS) and available, that is used.
- If both stacks are available, the setting of the
java.net.preferIPv4Stackproperty determines which is used.
For more information, read Networking IPv6 User Guide from the Oracle Java documentation.
> For example this: Socket socket = new Socket("127.0.0.1", 5000) is used for ip4, as I understood. But how do I initialize the socket if I want to use ip6?
Socket socket = new Socket("::1", 5000);
See also: https://stackoverflow.com/questions/40189084/what-is-ipv6-for-localhost-and-0-0-0-0
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