关于绑定套接字到本地的问题

Question

我创建了套接字之后就要用bind函数把套接字绑定到本地地址。。为什么要绑定？ 是不是因为我要和别的电脑通信所以要绑定自己然后才可以通信？ 还是怎样？ 我理解得不够牢固 请哥们帮个忙啦！！谢谢

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法拉利 法拉利 法拉利

Answer 1

MSDN上是这样写的.
The bind function is used on an unconnected socket before subsequent calls to the connect or listen functions. It is used to bind to either connection-oriented (stream) or connectionless (datagram) sockets. When a socket is created with a call to the socket function, it exists in a namespace (address family), but it has no name assigned to it. Use the bind function to establish the local association of the socket by assigning a local name to an unnamed socket.

注意最后一句话.若不用bind,你的socket是未命名的,不能通信.

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0xBAADF00D

Answer 2

MSDN上是这样写的.
The bind function is used on an unconnected socket before subsequent calls to the connect or listen functions. It is used to bind to either connection-oriented (stream) or connectionless (datagram) sockets. When a socket is created with a call to the socket function, it exists in a namespace (address family), but it has no name assigned to it. Use the bind function to establish the local association of the socket by assigning a local name to an unnamed socket.

注意最后一句话.若不用bind,你的socket是未命名的,不能通信.

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0xBAADF00D

哥们 我看不懂英文 不过你最后一句话我注意到了 呵呵 谢谢

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法拉利 法拉利 法拉利

Answer 3

       要根据你要怎么用这个socket，如果仅仅是客户端socket，去连接远端server，那就不用bind,直接connect就行了.
      bind只是用在listen之前，不listen的话不用bind.

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