mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-25 12:57:18 +00:00
111 lines
3.5 KiB
Go
111 lines
3.5 KiB
Go
package p2p
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import (
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"crypto/ecdsa"
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"fmt"
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"net"
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"github.com/libp2p/go-libp2p"
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"github.com/libp2p/go-libp2p-core/peer"
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noise "github.com/libp2p/go-libp2p-noise"
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ma "github.com/multiformats/go-multiaddr"
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"github.com/pkg/errors"
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"github.com/prysmaticlabs/prysm/shared/version"
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)
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// buildOptions for the libp2p host.
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func (s *Service) buildOptions(ip net.IP, priKey *ecdsa.PrivateKey) []libp2p.Option {
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cfg := s.cfg
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listen, err := multiAddressBuilder(ip.String(), cfg.TCPPort)
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if err != nil {
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log.Fatalf("Failed to p2p listen: %v", err)
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}
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if cfg.LocalIP != "" {
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if net.ParseIP(cfg.LocalIP) == nil {
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log.Fatalf("Invalid local ip provided: %s", cfg.LocalIP)
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}
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listen, err = multiAddressBuilder(cfg.LocalIP, cfg.TCPPort)
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if err != nil {
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log.Fatalf("Failed to p2p listen: %v", err)
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}
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}
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options := []libp2p.Option{
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privKeyOption(priKey),
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libp2p.ListenAddrs(listen),
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libp2p.UserAgent(version.GetBuildData()),
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libp2p.ConnectionGater(s),
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}
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options = append(options, libp2p.Security(noise.ID, noise.New))
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if cfg.EnableUPnP {
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options = append(options, libp2p.NATPortMap()) // Allow to use UPnP
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}
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if cfg.RelayNodeAddr != "" {
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options = append(options, libp2p.AddrsFactory(withRelayAddrs(cfg.RelayNodeAddr)))
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} else {
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// Disable relay if it has not been set.
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options = append(options, libp2p.DisableRelay())
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}
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if cfg.HostAddress != "" {
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options = append(options, libp2p.AddrsFactory(func(addrs []ma.Multiaddr) []ma.Multiaddr {
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external, err := multiAddressBuilder(cfg.HostAddress, cfg.TCPPort)
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if err != nil {
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log.WithError(err).Error("Unable to create external multiaddress")
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} else {
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addrs = append(addrs, external)
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}
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return addrs
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}))
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}
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if cfg.HostDNS != "" {
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options = append(options, libp2p.AddrsFactory(func(addrs []ma.Multiaddr) []ma.Multiaddr {
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external, err := ma.NewMultiaddr(fmt.Sprintf("/dns4/%s/tcp/%d", cfg.HostDNS, cfg.TCPPort))
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if err != nil {
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log.WithError(err).Error("Unable to create external multiaddress")
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} else {
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addrs = append(addrs, external)
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}
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return addrs
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}))
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}
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// Disable Ping Service.
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options = append(options, libp2p.Ping(false))
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return options
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}
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func multiAddressBuilder(ipAddr string, port uint) (ma.Multiaddr, error) {
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parsedIP := net.ParseIP(ipAddr)
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if parsedIP.To4() == nil && parsedIP.To16() == nil {
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return nil, errors.Errorf("invalid ip address provided: %s", ipAddr)
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}
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if parsedIP.To4() != nil {
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return ma.NewMultiaddr(fmt.Sprintf("/ip4/%s/tcp/%d", ipAddr, port))
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}
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return ma.NewMultiaddr(fmt.Sprintf("/ip6/%s/tcp/%d", ipAddr, port))
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}
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func multiAddressBuilderWithID(ipAddr, protocol string, port uint, id peer.ID) (ma.Multiaddr, error) {
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parsedIP := net.ParseIP(ipAddr)
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if parsedIP.To4() == nil && parsedIP.To16() == nil {
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return nil, errors.Errorf("invalid ip address provided: %s", ipAddr)
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}
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if id.String() == "" {
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return nil, errors.New("empty peer id given")
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}
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if parsedIP.To4() != nil {
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return ma.NewMultiaddr(fmt.Sprintf("/ip4/%s/%s/%d/p2p/%s", ipAddr, protocol, port, id.String()))
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}
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return ma.NewMultiaddr(fmt.Sprintf("/ip6/%s/%s/%d/p2p/%s", ipAddr, protocol, port, id.String()))
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}
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// Adds a private key to the libp2p option if the option was provided.
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// If the private key file is missing or cannot be read, or if the
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// private key contents cannot be marshaled, an exception is thrown.
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func privKeyOption(privkey *ecdsa.PrivateKey) libp2p.Option {
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return func(cfg *libp2p.Config) error {
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log.Debug("ECDSA private key generated")
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return cfg.Apply(libp2p.Identity(convertToInterfacePrivkey(privkey)))
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}
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}
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