67 lines
1.4 KiB
Go
67 lines
1.4 KiB
Go
package main
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import (
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"context"
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"encoding/json"
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"fmt"
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"time"
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"github.com/libp2p/go-libp2p"
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inet "github.com/libp2p/go-libp2p/core/network"
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"github.com/urfave/cli/v2"
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cborutil "github.com/filecoin-project/go-cbor-util"
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lcli "github.com/filecoin-project/lotus/cli"
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"github.com/filecoin-project/lotus/node/hello"
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)
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var resultCh chan bool
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var helloCmd = &cli.Command{
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Name: "hello",
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Description: "Get remote peer hello message by multiaddr",
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ArgsUsage: "[peerMultiaddr|minerActorAddress]",
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Action: func(cctx *cli.Context) error {
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ctx := lcli.ReqContext(cctx)
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resultCh = make(chan bool, 1)
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pis, err := lcli.AddrInfoFromArg(ctx, cctx)
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if err != nil {
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return err
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}
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h, err := libp2p.New()
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if err != nil {
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return err
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}
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h.SetStreamHandler(hello.ProtocolID, HandleStream)
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err = h.Connect(ctx, pis[0])
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if err != nil {
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return err
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}
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ctx, done := context.WithTimeout(ctx, 5*time.Second)
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defer done()
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select {
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case <-resultCh:
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case <-ctx.Done():
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fmt.Println("can't get hello message, please try again")
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}
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return nil
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},
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}
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func HandleStream(s inet.Stream) {
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var hmsg hello.HelloMessage
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_ = s.SetReadDeadline(time.Now().Add(30 * time.Second))
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if err := cborutil.ReadCborRPC(s, &hmsg); err != nil {
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log.Infow("failed to read hello message, disconnecting", "error", err)
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_ = s.Conn().Close()
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return
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}
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data, err := json.Marshal(hmsg)
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if err != nil {
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return
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}
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fmt.Println(string(data))
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resultCh <- true
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}
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