Golang语言实现PBFT共识算法代码

以下是一个简单的Golang语言实现PBFT共识算法的代码示例，仅供参考：

package main

import (
    "fmt"
    "net"
    "strconv"
)

type MessageType int

const (
    PRE_PREPARE MessageType = iota
    PREPARE
    COMMIT
)

type Message struct {
    Type MessageType
    SenderId int
    View int
    SequenceNum int
    Content string
}

type Node struct {
    Id int
    View int
    SequenceNum int
}

func main() {
    nodes := make([]Node, 4)
    for i := 0; i < 4; i++ {
        nodes[i] = Node{
            Id: i,
            View: 0,
            SequenceNum: 0,
        }
    }

    listener, err := net.Listen("tcp", ":8080")
    if err != nil {
        panic(err)
    }

    for {
        conn, err := listener.Accept()
        if err != nil {
            continue
        }

        go handleConnection(conn, nodes)
    }
}

func handleConnection(conn net.Conn, nodes []Node) {
    defer conn.Close()

    buffer := make([]byte, 1024)
    n, err := conn.Read(buffer)
    if err != nil {
        return
    }

    message := deserialize(buffer[:n])

    switch message.Type {
    case PRE_PREPARE:
        // TODO: handle pre-prepare message
    case PREPARE:
        // TODO: handle prepare message
    case COMMIT:
        // TODO: handle commit message
    }
}

func serialize(message Message) []byte {
    str := strconv.Itoa(int(message.Type)) + ":" + strconv.Itoa(message.SenderId) + ":" + strconv.Itoa(message.View) + ":" + strconv.Itoa(message.SequenceNum) + ":" + message.Content
    return []byte(str)
}

func deserialize(buffer []byte) Message {
    str := string(buffer)
    parts := strings.Split(str, ":")
    messageType, _ := strconv.Atoi(parts[0])
    senderId, _ := strconv.Atoi(parts[1])
    view, _ := strconv.Atoi(parts[2])
    sequenceNum, _ := strconv.Atoi(parts[3])
    content := parts[4]
    return Message{
        Type: MessageType(messageType),
        SenderId: senderId,
        View: view,
        SequenceNum: sequenceNum,
        Content: content,
    }
}

这段代码实现了一个简单的PBFT共识算法节点，其中包括消息结构体、节点结构体、网络通信以及序列化和反序列化函数。在此基础上，可以进一步实现PBFT算法的各个阶段的功能。