63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
// Copyright 2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"context"
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"fmt"
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"math"
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"github.com/libp2p/go-libp2p-core/host"
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"github.com/libp2p/go-libp2p-core/peer"
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"github.com/matrix-org/gomatrixserverlib"
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)
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type mDNSListener struct {
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keydb gomatrixserverlib.KeyDatabase
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host host.Host
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}
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func (n *mDNSListener) HandlePeerFound(p peer.AddrInfo) {
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if err := n.host.Connect(context.Background(), p); err != nil {
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fmt.Println("Error adding peer", p.ID.String(), "via mDNS:", err)
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}
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if pubkey, err := p.ID.ExtractPublicKey(); err == nil {
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raw, _ := pubkey.Raw()
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if err := n.keydb.StoreKeys(
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context.Background(),
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map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult{
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{
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ServerName: gomatrixserverlib.ServerName(p.ID.String()),
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KeyID: "ed25519:p2pdemo",
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}: {
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VerifyKey: gomatrixserverlib.VerifyKey{
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Key: gomatrixserverlib.Base64String(raw),
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},
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ValidUntilTS: math.MaxUint64 >> 1,
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ExpiredTS: gomatrixserverlib.PublicKeyNotExpired,
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},
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},
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); err != nil {
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fmt.Println("Failed to store keys:", err)
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}
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}
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fmt.Println("Discovered", len(n.host.Peerstore().Peers())-1, "other libp2p peer(s):")
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for _, peer := range n.host.Peerstore().Peers() {
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if peer != n.host.ID() {
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fmt.Println("-", peer)
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}
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}
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}
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