DatagramChannel.send

最新推荐文章于 2021-09-11 21:29:37 发布

原创最新推荐文章于 2021-09-11 21:29:37 发布 · 609 阅读

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文章标签：

#buffer #output

本文介绍了一个公共抽象方法send，该方法用于在非阻塞模式下将剩余字节从给定缓冲区作为单一数据报发送到指定目标地址。如果底层输出缓冲区有足够的空间或者在阻塞模式下空间变得足够，则执行此操作。返回值为发送的字节数，可能是源缓冲区中剩余的字节数，也可能是在非阻塞模式下由于输出缓冲区空间不足而为零。

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send

public abstract int send
(ByteBuffer
 src,

                         SocketAddress
 target)

                  throws IOException

non-blocking mode

and

there is sufficient room in the underlying output buffer

blocking mode

and

sufficient room becomes available

then the remaining bytes in the given buffer are transmitted as a single datagram to the given target address.

Returns:

The number of bytes sent, which will be either the number of bytes that were remaining in the source buffer when this method was invoked or, if this channel is non-blocking, may be zero if there was insufficient room for the datagram in the underlying output buffer