在网上读和写Conn [英] Reading and writing on net.Conn

问题描述

我正在尝试从net.Conn读取和写入数据，但是由于我只有Read（[] byte）和Write（[] byte）函数，因此我很难找到辅助函数来完成此工作。

I am trying to read and write data from a net.Conn but since I have only Read([]byte) and Write([]byte) functions, I am finding quite hard to find helper functions to do this job.

我需要读写以下类型：

• uint64


• byte


• uint32


• UTF-8编码的字符串（第一个为uint32长度，后为字符串数据）

• uint64
• byte
• uint32
• UTF-8 encoded string ( first a uint32 length and the string data after)

简而言之

是否有类似Go程序包中的Java DataInputStream和DataOutputStream吗？

Is there anything like Java's DataInputStream and DataOutputStream in Go's packages ?

感谢和问候

推荐答案

您需要确定一种往返编组的格式。您可以选择采用自己的格式，也可以使用已经制作的格式。我强烈建议使用后者。

You need to decide on a format to marshal to and from. Your choices are to either roll your own format or to use one that was already made. I highly recommend the latter.

我以前在此处发布过go标准库中支持的许多格式：https://stackoverflow.com/a/13575325/727643

I have previously posted about many of the formats supported in the go standard library here: https://stackoverflow.com/a/13575325/727643

如果您决定自己滚动，则可以使用uint可以使用 encoding / binary 从[] byte中进行编码和解码。它为您提供了小端和大端的选择。可以使用 [] byte（str）将字符串直接转换为[] byte。最后，字节可以作为字节发送。

If you decide to roll your own, then uints can be encoded and decoded from []byte using encoding/binary. It gives you the option of both little and big endian. Strings can be converted directly to []byte using []byte(str). Finally, bytes can just be sent as bytes. No magic needed.

我会强调，编排自己的格式通常不是一个好主意。我倾向于默认情况下使用JSON，并且仅在可以显着提高性能并且相信这样做值得时才使用其他JSON。

I will stress that making up your own format is normally a bad idea. I tend to use JSON by default and use others only when I can get a significant performance increase and I believe it worth the time to do it.

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