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addrfactory.go
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/
addrfactory.go
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/*
* Copyright (c) 2017-2020 The qitmeer developers
*/
package p2p
import (
"fmt"
"github.com/Qitmeer/qng/p2p/qnode"
"github.com/Qitmeer/qng/p2p/qnr"
"github.com/libp2p/go-libp2p/core/peer"
ma "github.com/multiformats/go-multiaddr"
"strings"
)
// withRelayAddrs returns an AddrFactory which will return Multiaddr via
// specified relay string in addition to existing MultiAddr.
func withRelayAddrs(relay string, addrs []ma.Multiaddr) []ma.Multiaddr {
if relay == "" {
return addrs
}
var relayAddrs []ma.Multiaddr
for _, a := range addrs {
if strings.Contains(a.String(), "/p2p-circuit") {
continue
}
relayAddr, err := ma.NewMultiaddr(relay + "/p2p-circuit" + a.String())
if err != nil {
log.Error(fmt.Sprintf("Failed to create multiaddress for relay node: %v", err))
} else {
relayAddrs = append(relayAddrs, relayAddr)
}
}
if len(relayAddrs) == 0 {
log.Warn("Addresses via relay node are zero - using non-relay addresses")
return addrs
}
return append(addrs, relayAddrs...)
}
func parseBootStrapAddrs(addrs []string) (discv5Nodes []string) {
discv5Nodes, discvNodes := parseGenericAddrs(addrs)
if len(discv5Nodes) == 0 && len(discvNodes) <= 0 {
log.Warn("No bootstrap addresses supplied")
}
return discv5Nodes
}
func parseGenericAddrs(addrs []string) (qnodeString []string, multiAddrString []string) {
for _, addr := range addrs {
if addr == "" {
// Ignore empty entries
continue
}
_, err := qnode.Parse(qnode.ValidSchemes, addr)
if err == nil {
qnodeString = append(qnodeString, addr)
continue
}
_, err = MultiAddrFromString(addr)
if err == nil {
multiAddrString = append(multiAddrString, addr)
continue
}
log.Error(fmt.Sprintf("Invalid address of %s provided: %v", addr, err.Error()))
}
return qnodeString, multiAddrString
}
func convertToMultiAddr(nodes []*qnode.Node) []ma.Multiaddr {
var multiAddrs []ma.Multiaddr
for _, node := range nodes {
// ignore nodes with no ip address stored
if node.IP() == nil {
continue
}
multiAddr, err := ConvertToSingleMultiAddr(node)
if err != nil {
log.Error(fmt.Sprintf("%s Could not convert to multiAddr", err.Error()))
continue
}
multiAddrs = append(multiAddrs, multiAddr)
}
return multiAddrs
}
func convertQNRToMultiAddr(qnrStr string) (ma.Multiaddr, error) {
node, err := qnode.Parse(qnode.ValidSchemes, qnrStr)
if err != nil {
return nil, err
}
// do not dial bootnodes with their tcp ports not set
if err := node.Record().Load(qnr.WithEntry("tcp", new(qnr.TCP))); err != nil {
if !qnr.IsNotFound(err) {
err = fmt.Errorf("Could not retrieve tcp port:%v\n", err)
}
return nil, err
}
return ConvertToSingleMultiAddr(node)
}
func convertToAddrInfo(node *qnode.Node) (*peer.AddrInfo, ma.Multiaddr, error) {
multiAddr, err := ConvertToSingleMultiAddr(node)
if err != nil {
return nil, nil, err
}
info, err := peer.AddrInfoFromP2pAddr(multiAddr)
if err != nil {
return nil, nil, err
}
return info, multiAddr, nil
}
func ConvertToSingleMultiAddr(node *qnode.Node) (ma.Multiaddr, error) {
ip4 := node.IP().To4()
if ip4 == nil {
return nil, fmt.Errorf("node doesn't have an ip4 address, it's stated IP is %s", node.IP().String())
}
pubkey := node.Pubkey()
assertedKey := ConvertToInterfacePubkey(pubkey)
id, err := peer.IDFromPublicKey(assertedKey)
if err != nil {
return nil, fmt.Errorf("could not get peer id:%w", err)
}
multiAddrString := fmt.Sprintf("/ip4/%s/tcp/%d/p2p/%s", ip4.String(), node.TCP(), id)
multiAddr, err := ma.NewMultiaddr(multiAddrString)
if err != nil {
return nil, fmt.Errorf("could not get multiaddr:%w", err)
}
return multiAddr, nil
}
func peersFromStringAddrs(addrs []string) ([]ma.Multiaddr, error) {
var allAddrs []ma.Multiaddr
qnodeString, multiAddrString := parseGenericAddrs(addrs)
for _, stringAddr := range multiAddrString {
addr, err := MultiAddrFromString(stringAddr)
if err != nil {
return nil, fmt.Errorf("Could not get multiaddr from string:%w", err)
}
allAddrs = append(allAddrs, addr)
}
for _, stringAddr := range qnodeString {
qnodeAddr, err := qnode.Parse(qnode.ValidSchemes, stringAddr)
if err != nil {
return nil, fmt.Errorf("Could not get qnode from string:%w", err)
}
addr, err := ConvertToSingleMultiAddr(qnodeAddr)
if err != nil {
return nil, fmt.Errorf("Could not get multiaddr:%w", err)
}
allAddrs = append(allAddrs, addr)
}
return allAddrs, nil
}
func MultiAddrFromString(address string) (ma.Multiaddr, error) {
return ma.NewMultiaddr(address)
}