Yggdrasil demo updates ("Bare QUIC")

Squashed commit of the following:

commit 86c2388e13ffdbabdd50cea205652dccc40e1860
Merge: b0a3ee6c f5e7e751
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Thu Jul 16 13:47:10 2020 +0100

    Merge branch 'master' into neilalexander/yggbarequic

commit b0a3ee6c5c063962384bb91c59ec753ddc8cfe5f
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Thu Jul 16 13:42:22 2020 +0100

    Add support for broadcasting wake-up EDUs to known hosts

commit 8a5c2020b3a4b705b5d5686a9e71990a49e6d471
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Thu Jul 16 13:42:10 2020 +0100

    Bare QUIC demo working

commit d3939b3d6568cf4262c0391486a5203873b68bfc
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Wed Jul 15 11:42:43 2020 +0100

    Support bare Yggdrasil sessions with encrypted QUIC

1 files changed, 16 insertions, 51 deletions

diff --git a/build/gobind/monolith.go b/build/gobind/monolith.go
index bc638d00..7b0385bc 100644
--- a/build/gobind/monolith.go
+++ b/build/gobind/monolith.go
@@ -3,7 +3,6 @@ package gobind
 import (
 	"context"
 	"crypto/tls"
-	"encoding/hex"
 	"fmt"
 	"net"
 	"net/http"
@@ -25,7 +24,6 @@ import (
 	"github.com/matrix-org/dendrite/userapi"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/sirupsen/logrus"
-	"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
 	"go.uber.org/atomic"
 )
 
@@ -169,33 +167,6 @@ func (m *DendriteMonolith) Start() {
 		base.UseHTTPAPIs,
 	)
 
-	ygg.NewSession = func(serverName gomatrixserverlib.ServerName) {
-		logrus.Infof("Found new session %q", serverName)
-		time.Sleep(time.Second * 3)
-		req := &api.PerformServersAliveRequest{
-			Servers: []gomatrixserverlib.ServerName{serverName},
-		}
-		res := &api.PerformServersAliveResponse{}
-		if err := fsAPI.PerformServersAlive(context.TODO(), req, res); err != nil {
-			logrus.WithError(err).Warn("Failed to notify server alive due to new session")
-		}
-	}
-
-	ygg.NotifyLinkNew(func(_ crypto.BoxPubKey, sigPubKey crypto.SigPubKey, linkType, remote string) {
-		serverName := hex.EncodeToString(sigPubKey[:])
-		logrus.Infof("Found new peer %q", serverName)
-		time.Sleep(time.Second * 3)
-		req := &api.PerformServersAliveRequest{
-			Servers: []gomatrixserverlib.ServerName{
-				gomatrixserverlib.ServerName(serverName),
-			},
-		}
-		res := &api.PerformServersAliveResponse{}
-		if err := fsAPI.PerformServersAlive(context.TODO(), req, res); err != nil {
-			logrus.WithError(err).Warn("Failed to notify server alive due to new session")
-		}
-	})
-
 	// Build both ends of a HTTP multiplex.
 	m.httpServer = &http.Server{
 		Addr:         ":0",
@@ -209,28 +180,22 @@ func (m *DendriteMonolith) Start() {
 		Handler: base.BaseMux,
 	}
 
-	m.Resume()
-}
-
-func (m *DendriteMonolith) Resume() {
-	logrus.Info("Resuming monolith")
-	if listener, err := net.Listen("tcp", "localhost:65432"); err == nil {
-		m.listener = listener
-	}
-	if m.yggListening.CAS(false, true) {
-		go func() {
-			m.logger.Info("Listening on ", m.YggdrasilNode.DerivedServerName())
-			m.logger.Fatal(m.httpServer.Serve(m.YggdrasilNode))
-			m.yggListening.Store(false)
-		}()
-	}
-	if m.httpListening.CAS(false, true) {
-		go func() {
-			m.logger.Info("Listening on ", m.BaseURL())
-			m.logger.Fatal(m.httpServer.Serve(m.listener))
-			m.httpListening.Store(false)
-		}()
-	}
+	go func() {
+		logger.Info("Listening on ", ygg.DerivedServerName())
+		logger.Fatal(httpServer.Serve(ygg))
+	}()
+	go func() {
+		logger.Info("Listening on ", m.BaseURL())
+		logger.Fatal(httpServer.Serve(m.listener))
+	}()
+	go func() {
+		logrus.Info("Sending wake-up message to known nodes")
+		req := &api.PerformBroadcastEDURequest{}
+		res := &api.PerformBroadcastEDUResponse{}
+		if err := fsAPI.PerformBroadcastEDU(context.TODO(), req, res); err != nil {
+			logrus.WithError(err).Error("Failed to send wake-up message to known nodes")
+		}
+	}()
 }
 
 func (m *DendriteMonolith) Suspend() {