From b45050b82441c2ea8c7a6bcbe3c11c914c3071a2 Mon Sep 17 00:00:00 2001
From: Marten Seemann <martenseemann@gmail.com>
Date: Thu, 5 Mar 2020 09:06:31 +0700
Subject: [PATCH] remember the value of the active_connection_id_limit
 transport parameter

---
 internal/handshake/client_session_cache.go     | 2 +-
 internal/handshake/session_ticket.go           | 2 +-
 internal/handshake/transport_parameter_test.go | 2 ++
 internal/handshake/transport_parameters.go     | 2 ++
 4 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/internal/handshake/client_session_cache.go b/internal/handshake/client_session_cache.go
index 43b816683..249b0c257 100644
--- a/internal/handshake/client_session_cache.go
+++ b/internal/handshake/client_session_cache.go
@@ -13,7 +13,7 @@ import (
 	"github.com/lucas-clemente/quic-go/internal/utils"
 )
 
-const clientSessionStateRevision = 1
+const clientSessionStateRevision = 2
 
 type clientSessionCache struct {
 	tls.ClientSessionCache
diff --git a/internal/handshake/session_ticket.go b/internal/handshake/session_ticket.go
index 0ca726803..9761e3410 100644
--- a/internal/handshake/session_ticket.go
+++ b/internal/handshake/session_ticket.go
@@ -9,7 +9,7 @@ import (
 	"github.com/lucas-clemente/quic-go/internal/utils"
 )
 
-const sessionTicketRevision = 1
+const sessionTicketRevision = 2
 
 type sessionTicket struct {
 	Parameters *TransportParameters
diff --git a/internal/handshake/transport_parameter_test.go b/internal/handshake/transport_parameter_test.go
index f40d92b8e..c0f4a7baf 100644
--- a/internal/handshake/transport_parameter_test.go
+++ b/internal/handshake/transport_parameter_test.go
@@ -316,6 +316,7 @@ var _ = Describe("Transport Parameters", func() {
 				InitialMaxData:                 protocol.ByteCount(getRandomValue()),
 				MaxBidiStreamNum:               protocol.StreamNum(getRandomValue()),
 				MaxUniStreamNum:                protocol.StreamNum(getRandomValue()),
+				ActiveConnectionIDLimit:        getRandomValue(),
 			}
 			Expect(params.ValidFor0RTT(params)).To(BeTrue())
 			b := &bytes.Buffer{}
@@ -328,6 +329,7 @@ var _ = Describe("Transport Parameters", func() {
 			Expect(tp.InitialMaxData).To(Equal(params.InitialMaxData))
 			Expect(tp.MaxBidiStreamNum).To(Equal(params.MaxBidiStreamNum))
 			Expect(tp.MaxUniStreamNum).To(Equal(params.MaxUniStreamNum))
+			Expect(tp.ActiveConnectionIDLimit).To(Equal(params.ActiveConnectionIDLimit))
 		})
 
 		It("rejects the parameters if it can't parse them", func() {
diff --git a/internal/handshake/transport_parameters.go b/internal/handshake/transport_parameters.go
index 7665a7578..e811755ec 100644
--- a/internal/handshake/transport_parameters.go
+++ b/internal/handshake/transport_parameters.go
@@ -384,6 +384,8 @@ func (p *TransportParameters) MarshalForSessionTicket(b *bytes.Buffer) {
 	p.marshalVarintParam(b, initialMaxStreamsBidiParameterID, uint64(p.MaxBidiStreamNum))
 	// initial_max_uni_streams
 	p.marshalVarintParam(b, initialMaxStreamsUniParameterID, uint64(p.MaxUniStreamNum))
+	// active_connection_id_limit
+	p.marshalVarintParam(b, activeConnectionIDLimitParameterID, p.ActiveConnectionIDLimit)
 }
 
 // UnmarshalFromSessionTicket unmarshals transport parameters from a session ticket.