我做了一个功能，以改变为QUIC或TCP我张贴它的情况下，任何人都有兴趣，在任何人有更好的选择请分享，谢谢！
func setTransport（ctx上下文.上下文，对等体ID对等体.ID，首选QUIC bool）bool {

// get peer addrinfo from id
peeraddr := Host.Peerstore().PeerInfo(peerid)
var addrs []multiaddr.Multiaddr

conn := Host.Network().ConnsToPeer(peeraddr.ID)
for _, c := range conn {
    fmt.Println("Currently Using : ", c.ConnState().Transport)

    // if we want to use quic and the connection is quic, return
    if c.ConnState().Transport == "quic" && preferQUIC {
        fmt.Println("[*] Using QUIC protocol")
        return true
    }
    // if we want to use tcp and the connection is tcp, return
    if c.ConnState().Transport == "tcp" && !preferQUIC {
        fmt.Println("[*] Using TCP protocol")

        return true
    }
    //conn is tcp and we want quic
    if c.ConnState().Transport == "tcp" {
        fmt.Println("[*] Changing to QUIC protocol")
        addrs = selectAddrs(peeraddr.Addrs, true, false)

    }
    //conn is quic and we want tcp
    if c.ConnState().Transport == "quic" {

        fmt.Println("[*] Changing to TCP protocol")
        addrs = selectAddrs(peeraddr.Addrs, false, true)

    }

}
if len(addrs) == 0 {

    fmt.Print("Not Supported", peeraddr.Addrs, preferQUIC, "current transport", conn)
    return false

}

Host.Peerstore().ClearAddrs(peeraddr.ID) //maybe this inst needed ???
Host.Peerstore().AddAddrs(peeraddr.ID, addrs, time.Hour*1) //maybe this inst needed ???
closeConns(peeraddr.ID) // need to close conns, else the previous transport will not change

var NewPeer peer.AddrInfo
NewPeer.ID = peeraddr.ID
NewPeer.Addrs = addrs //selected addr containing desired trp

err := Host.Connect(ctx, NewPeer)

if err != nil {

    fmt.Println("Error connecting to ", addrs, err)
    return false
}

singleconn := Host.Network().ConnsToPeer(peeraddr.ID)[0]
if preferQUIC && singleconn.ConnState().Transport == "quic" {
    fmt.Println("[*] Succesfully changed to QUIC")
    return true

} else if !preferQUIC && singleconn.ConnState().Transport == "tcp" {
    fmt.Println("[*] Succesfully changed to TCP")
    return true

} else {
    fmt.Println("Error changing transport")
    return false
}

}