forked from cerc-io/plugeth
a72fa88a0d
This PR enables running the new discv5 protocol in both LES client and server mode. In client mode it mixes discv5 and dnsdisc iterators (if both are enabled) and filters incoming ENRs for "les" tag and fork ID. The old p2p/discv5 package and all references to it are removed. Co-authored-by: Felix Lange <fjl@twurst.com>
105 lines
3.2 KiB
Go
105 lines
3.2 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Contains all the wrappers from the accounts package to support client side enode
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// management on mobile platforms.
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package geth
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import (
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"errors"
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"github.com/ethereum/go-ethereum/p2p/enode"
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)
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// Enode represents a host on the network.
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type Enode struct {
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node *enode.Node
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}
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// NewEnode parses a node designator.
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//
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// There are two basic forms of node designators
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// - incomplete nodes, which only have the public key (node ID)
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// - complete nodes, which contain the public key and IP/Port information
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//
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// For incomplete nodes, the designator must look like one of these
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//
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// enode://<hex node id>
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// <hex node id>
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//
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// For complete nodes, the node ID is encoded in the username portion
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// of the URL, separated from the host by an @ sign. The hostname can
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// only be given as an IP address, DNS domain names are not allowed.
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// The port in the host name section is the TCP listening port. If the
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// TCP and UDP (discovery) ports differ, the UDP port is specified as
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// query parameter "discport".
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//
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// In the following example, the node URL describes
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// a node with IP address 10.3.58.6, TCP listening port 30303
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// and UDP discovery port 30301.
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//
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// enode://<hex node id>@10.3.58.6:30303?discport=30301
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func NewEnode(rawurl string) (*Enode, error) {
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node, err := enode.Parse(enode.ValidSchemes, rawurl)
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if err != nil {
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return nil, err
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}
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return &Enode{node}, nil
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}
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// Enodes represents a slice of accounts.
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type Enodes struct{ nodes []*enode.Node }
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// NewEnodes creates a slice of uninitialized enodes.
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func NewEnodes(size int) *Enodes {
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return &Enodes{
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nodes: make([]*enode.Node, size),
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}
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}
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// NewEnodesEmpty creates an empty slice of Enode values.
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func NewEnodesEmpty() *Enodes {
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return NewEnodes(0)
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}
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// Size returns the number of enodes in the slice.
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func (e *Enodes) Size() int {
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return len(e.nodes)
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}
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// Get returns the enode at the given index from the slice.
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func (e *Enodes) Get(index int) (enode *Enode, _ error) {
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if index < 0 || index >= len(e.nodes) {
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return nil, errors.New("index out of bounds")
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}
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return &Enode{e.nodes[index]}, nil
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}
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// Set sets the enode at the given index in the slice.
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func (e *Enodes) Set(index int, enode *Enode) error {
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if index < 0 || index >= len(e.nodes) {
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return errors.New("index out of bounds")
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}
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e.nodes[index] = enode.node
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return nil
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}
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// Append adds a new enode element to the end of the slice.
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func (e *Enodes) Append(enode *Enode) {
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e.nodes = append(e.nodes, enode.node)
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}
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