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