package libp2p import ( "github.com/libp2p/go-libp2p/config" "github.com/libp2p/go-libp2p/core/host" ) // Config describes a set of settings for a libp2p node. type Config = config.Config // Option is a libp2p config option that can be given to the libp2p constructor // (`libp2p.New`). type Option = config.Option // ChainOptions chains multiple options into a single option. func ChainOptions(opts ...Option) Option { return func(cfg *Config) error { for _, opt := range opts { if opt == nil { continue } if err := opt(cfg); err != nil { return err } } return nil } } // New constructs a new libp2p node with the given options, falling back on // reasonable defaults. The defaults are: // // - If no transport and listen addresses are provided, the node listens to // the multiaddresses "/ip4/0.0.0.0/tcp/0" and "/ip6/::/tcp/0"; // // - If no transport options are provided, the node uses TCP, websocket and QUIC // transport protocols; // // - If no multiplexer configuration is provided, the node is configured by // default to use yamux; // // - If no security transport is provided, the host uses the go-libp2p's noise // and/or tls encrypted transport to encrypt all traffic; // // - If no peer identity is provided, it generates a random Ed25519 key-pair // and derives a new identity from it; // // - If no peerstore is provided, the host is initialized with an empty // peerstore. // // To stop/shutdown the returned libp2p node, the user needs to call `Close` on the returned Host. func New(opts ...Option) (host.Host, error) { return NewWithoutDefaults(append(opts, FallbackDefaults)...) } // NewWithoutDefaults constructs a new libp2p node with the given options but // *without* falling back on reasonable defaults. // // Warning: This function should not be considered a stable interface. We may // choose to add required services at any time and, by using this function, you // opt-out of any defaults we may provide. func NewWithoutDefaults(opts ...Option) (host.Host, error) { var cfg Config if err := cfg.Apply(opts...); err != nil { return nil, err } return cfg.NewNode() }