use TLS session resumption, store session tickets in the peerstore

Author: marten-seemann

crypto.go

@@ -22,6 +22,7 @@ import (
 const certValidityPeriod = 100 * 365 * 24 * time.Hour // ~100 years
 const certificatePrefix = "libp2p-tls-handshake:"
 const alpn string = "libp2p"
+const peerStoreKey = "libp2p-tls-session-cache"
 
 var extensionID = getPrefixedExtensionID([]int{1, 1})
 
@@ -52,7 +53,7 @@ func NewIdentity(privKey ic.PrivKey) (*Identity, error) {
 				panic("tls config not specialized for peer")
 			},
 			NextProtos:             []string{alpn},
-			SessionTicketsDisabled: true,
+			SessionTicketsDisabled: false,
 		},
 	}, nil
 }

go.mod

@@ -3,8 +3,9 @@ module github.com/libp2p/go-libp2p-tls
 go 1.14
 
 require (
-	github.com/libp2p/go-libp2p-core v0.3.0
+	github.com/libp2p/go-libp2p-core v0.6.1
+	github.com/libp2p/go-libp2p-peerstore v0.2.6
 	github.com/onsi/ginkgo v1.12.0
 	github.com/onsi/gomega v1.9.0
-	golang.org/x/sys v0.0.0-20191206220618-eeba5f6aabab
+	golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5
 )