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bytes-packet's Introduction

导入项目

代码头部加入import "github.com/itchin/bytes-packet",之后使用go mod tidy命令。

使用

package main

import "github.com/itchin/bytes-packet"

func main() {
    // 打包一个消息
    buf := bpacket.Packet([]byte("this is message"))

    // 解包一个消息
    buf = bpacket.Unpack(buf)
}

解决思路

将一个完整消息分为消息头和消息体,消息头共4个字节保存一个正整数为消息体长度。接收一段新的数据后,先从消息头读取长度,如果消息体长度小于声明的长度,将消息体写入缓存变量,继续向后读取,直到读取完毕。

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