outgoingMessage.write(chunk[, encoding][, callback])

• chunk <string> | <Buffer> | <Uint8Array>
• encoding <string> 默认值: utf8
• callback <Function>
• 返回 <boolean>

发送一块正文。 此方法可以被多次调用。

encoding 参数仅在 chunk 是字符串时才相关。 默认为 'utf8'。

callback 参数是可选的，当此数据被刷新时将被调用。

如果整个数据被成功刷新到内核缓冲区，则返回 true。 如果所有或部分数据在用户内存中排队，则返回 false。 当缓冲区再次空闲时将触发 'drain' 事件。

• chunk <string> | <Buffer> | <Uint8Array>
• encoding <string> Default: utf8
• callback <Function>
• Returns <boolean>

Sends a chunk of the body. This method can be called multiple times.

The encoding argument is only relevant when chunk is a string. Defaults to 'utf8'.

The callback argument is optional and will be called when this chunk of data is flushed.

Returns true if the entire data was flushed successfully to the kernel buffer. Returns false if all or part of the data was queued in the user memory. The 'drain' event will be emitted when the buffer is free again.