forked from quic-go/quic-go
10217a6f3b
When dialing a 0-RTT connection, the client first restores the transport parameters from the original connection, and then applies the transport parameters provided by the server on the new connections.
202 lines
8.0 KiB
Go
202 lines
8.0 KiB
Go
package quic
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/lucas-clemente/quic-go/internal/protocol"
|
|
"github.com/lucas-clemente/quic-go/internal/wire"
|
|
|
|
. "github.com/onsi/ginkgo"
|
|
. "github.com/onsi/gomega"
|
|
)
|
|
|
|
var _ = Describe("Connection ID Generator", func() {
|
|
var (
|
|
addedConnIDs []protocol.ConnectionID
|
|
retiredConnIDs []protocol.ConnectionID
|
|
removedConnIDs []protocol.ConnectionID
|
|
replacedWithClosed map[string]packetHandler
|
|
queuedFrames []wire.Frame
|
|
g *connIDGenerator
|
|
)
|
|
initialConnID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7}
|
|
initialClientDestConnID := protocol.ConnectionID{0xa, 0xb, 0xc, 0xd, 0xe}
|
|
|
|
connIDToToken := func(c protocol.ConnectionID) protocol.StatelessResetToken {
|
|
return protocol.StatelessResetToken{c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0], c[0]}
|
|
}
|
|
|
|
BeforeEach(func() {
|
|
addedConnIDs = nil
|
|
retiredConnIDs = nil
|
|
removedConnIDs = nil
|
|
queuedFrames = nil
|
|
replacedWithClosed = make(map[string]packetHandler)
|
|
g = newConnIDGenerator(
|
|
initialConnID,
|
|
initialClientDestConnID,
|
|
func(c protocol.ConnectionID) { addedConnIDs = append(addedConnIDs, c) },
|
|
connIDToToken,
|
|
func(c protocol.ConnectionID) { removedConnIDs = append(removedConnIDs, c) },
|
|
func(c protocol.ConnectionID) { retiredConnIDs = append(retiredConnIDs, c) },
|
|
func(c protocol.ConnectionID, h packetHandler) { replacedWithClosed[string(c)] = h },
|
|
func(f wire.Frame) { queuedFrames = append(queuedFrames, f) },
|
|
protocol.VersionDraft29,
|
|
)
|
|
})
|
|
|
|
It("issues new connection IDs", func() {
|
|
Expect(g.SetMaxActiveConnIDs(4)).To(Succeed())
|
|
Expect(retiredConnIDs).To(BeEmpty())
|
|
Expect(addedConnIDs).To(HaveLen(3))
|
|
for i := 0; i < len(addedConnIDs)-1; i++ {
|
|
Expect(addedConnIDs[i]).ToNot(Equal(addedConnIDs[i+1]))
|
|
}
|
|
Expect(queuedFrames).To(HaveLen(3))
|
|
for i := 0; i < 3; i++ {
|
|
f := queuedFrames[i]
|
|
Expect(f).To(BeAssignableToTypeOf(&wire.NewConnectionIDFrame{}))
|
|
nf := f.(*wire.NewConnectionIDFrame)
|
|
Expect(nf.SequenceNumber).To(BeEquivalentTo(i + 1))
|
|
Expect(nf.ConnectionID.Len()).To(Equal(7))
|
|
Expect(nf.StatelessResetToken).To(Equal(connIDToToken(nf.ConnectionID)))
|
|
}
|
|
})
|
|
|
|
It("doesn't issue new connection IDs in RetireBugBackwardsCompatibilityMode", func() {
|
|
RetireBugBackwardsCompatibilityMode = true
|
|
defer func() { RetireBugBackwardsCompatibilityMode = false }()
|
|
|
|
Expect(g.SetMaxActiveConnIDs(4)).To(Succeed())
|
|
Expect(retiredConnIDs).To(BeEmpty())
|
|
Expect(addedConnIDs).To(BeEmpty())
|
|
})
|
|
|
|
It("limits the number of connection IDs that it issues", func() {
|
|
Expect(g.SetMaxActiveConnIDs(9999999)).To(Succeed())
|
|
Expect(retiredConnIDs).To(BeEmpty())
|
|
Expect(addedConnIDs).To(HaveLen(protocol.MaxIssuedConnectionIDs - 1))
|
|
Expect(queuedFrames).To(HaveLen(protocol.MaxIssuedConnectionIDs - 1))
|
|
})
|
|
|
|
// SetMaxActiveConnIDs is called twice when we dialing a 0-RTT connection:
|
|
// once for the restored from the old connections, once when we receive the transport parameters
|
|
Context("dealing with 0-RTT", func() {
|
|
It("doesn't issue new connection IDs when SetMaxActiveConnIDs is called with the same value", func() {
|
|
Expect(g.SetMaxActiveConnIDs(4)).To(Succeed())
|
|
Expect(queuedFrames).To(HaveLen(3))
|
|
queuedFrames = nil
|
|
Expect(g.SetMaxActiveConnIDs(4)).To(Succeed())
|
|
Expect(queuedFrames).To(BeEmpty())
|
|
})
|
|
|
|
It("issues more connection IDs if the server allows a higher limit on the resumed connection", func() {
|
|
Expect(g.SetMaxActiveConnIDs(3)).To(Succeed())
|
|
Expect(queuedFrames).To(HaveLen(2))
|
|
queuedFrames = nil
|
|
Expect(g.SetMaxActiveConnIDs(6)).To(Succeed())
|
|
Expect(queuedFrames).To(HaveLen(3))
|
|
})
|
|
|
|
It("issues more connection IDs if the server allows a higher limit on the resumed connection, when connection IDs were retired in between", func() {
|
|
Expect(g.SetMaxActiveConnIDs(3)).To(Succeed())
|
|
Expect(queuedFrames).To(HaveLen(2))
|
|
queuedFrames = nil
|
|
g.Retire(1, protocol.ConnectionID{})
|
|
Expect(queuedFrames).To(HaveLen(1))
|
|
queuedFrames = nil
|
|
Expect(g.SetMaxActiveConnIDs(6)).To(Succeed())
|
|
Expect(queuedFrames).To(HaveLen(3))
|
|
})
|
|
})
|
|
|
|
It("errors if the peers tries to retire a connection ID that wasn't yet issued", func() {
|
|
Expect(g.Retire(1, protocol.ConnectionID{})).To(MatchError("PROTOCOL_VIOLATION: tried to retire connection ID 1. Highest issued: 0"))
|
|
})
|
|
|
|
It("errors if the peers tries to retire a connection ID in a packet with that connection ID", func() {
|
|
Expect(g.SetMaxActiveConnIDs(4)).To(Succeed())
|
|
Expect(queuedFrames).ToNot(BeEmpty())
|
|
Expect(queuedFrames[0]).To(BeAssignableToTypeOf(&wire.NewConnectionIDFrame{}))
|
|
f := queuedFrames[0].(*wire.NewConnectionIDFrame)
|
|
Expect(g.Retire(f.SequenceNumber, f.ConnectionID)).To(MatchError(fmt.Sprintf("PROTOCOL_VIOLATION: tried to retire connection ID %d (%s), which was used as the Destination Connection ID on this packet", f.SequenceNumber, f.ConnectionID)))
|
|
})
|
|
|
|
It("doesn't error if the peers tries to retire a connection ID in a packet with that connection ID in RetireBugBackwardsCompatibilityMode", func() {
|
|
Expect(g.SetMaxActiveConnIDs(4)).To(Succeed())
|
|
Expect(queuedFrames).ToNot(BeEmpty())
|
|
Expect(queuedFrames[0]).To(BeAssignableToTypeOf(&wire.NewConnectionIDFrame{}))
|
|
|
|
RetireBugBackwardsCompatibilityMode = true
|
|
defer func() { RetireBugBackwardsCompatibilityMode = false }()
|
|
|
|
f := queuedFrames[0].(*wire.NewConnectionIDFrame)
|
|
Expect(g.Retire(f.SequenceNumber, f.ConnectionID)).To(Succeed())
|
|
})
|
|
|
|
It("issues new connection IDs, when old ones are retired", func() {
|
|
Expect(g.SetMaxActiveConnIDs(5)).To(Succeed())
|
|
queuedFrames = nil
|
|
Expect(retiredConnIDs).To(BeEmpty())
|
|
Expect(g.Retire(3, protocol.ConnectionID{})).To(Succeed())
|
|
Expect(queuedFrames).To(HaveLen(1))
|
|
Expect(queuedFrames[0]).To(BeAssignableToTypeOf(&wire.NewConnectionIDFrame{}))
|
|
nf := queuedFrames[0].(*wire.NewConnectionIDFrame)
|
|
Expect(nf.SequenceNumber).To(BeEquivalentTo(5))
|
|
Expect(nf.ConnectionID.Len()).To(Equal(7))
|
|
})
|
|
|
|
It("retires the initial connection ID", func() {
|
|
Expect(g.Retire(0, protocol.ConnectionID{})).To(Succeed())
|
|
Expect(removedConnIDs).To(BeEmpty())
|
|
Expect(retiredConnIDs).To(HaveLen(1))
|
|
Expect(retiredConnIDs[0]).To(Equal(initialConnID))
|
|
Expect(addedConnIDs).To(BeEmpty())
|
|
})
|
|
|
|
It("handles duplicate retirements", func() {
|
|
Expect(g.SetMaxActiveConnIDs(11)).To(Succeed())
|
|
queuedFrames = nil
|
|
Expect(retiredConnIDs).To(BeEmpty())
|
|
Expect(g.Retire(5, protocol.ConnectionID{})).To(Succeed())
|
|
Expect(retiredConnIDs).To(HaveLen(1))
|
|
Expect(queuedFrames).To(HaveLen(1))
|
|
Expect(g.Retire(5, protocol.ConnectionID{})).To(Succeed())
|
|
Expect(retiredConnIDs).To(HaveLen(1))
|
|
Expect(queuedFrames).To(HaveLen(1))
|
|
})
|
|
|
|
It("retires the client's initial destination connection ID when the handshake completes", func() {
|
|
g.SetHandshakeComplete()
|
|
Expect(retiredConnIDs).To(HaveLen(1))
|
|
Expect(retiredConnIDs[0]).To(Equal(initialClientDestConnID))
|
|
})
|
|
|
|
It("removes all connection IDs", func() {
|
|
Expect(g.SetMaxActiveConnIDs(5)).To(Succeed())
|
|
Expect(queuedFrames).To(HaveLen(4))
|
|
g.RemoveAll()
|
|
Expect(removedConnIDs).To(HaveLen(6)) // initial conn ID, initial client dest conn id, and newly issued ones
|
|
Expect(removedConnIDs).To(ContainElement(initialConnID))
|
|
Expect(removedConnIDs).To(ContainElement(initialClientDestConnID))
|
|
for _, f := range queuedFrames {
|
|
nf := f.(*wire.NewConnectionIDFrame)
|
|
Expect(removedConnIDs).To(ContainElement(nf.ConnectionID))
|
|
}
|
|
})
|
|
|
|
It("replaces with a closed session for all connection IDs", func() {
|
|
Expect(g.SetMaxActiveConnIDs(5)).To(Succeed())
|
|
Expect(queuedFrames).To(HaveLen(4))
|
|
sess := NewMockPacketHandler(mockCtrl)
|
|
g.ReplaceWithClosed(sess)
|
|
Expect(replacedWithClosed).To(HaveLen(6)) // initial conn ID, initial client dest conn id, and newly issued ones
|
|
Expect(replacedWithClosed).To(HaveKeyWithValue(string(initialClientDestConnID), sess))
|
|
Expect(replacedWithClosed).To(HaveKeyWithValue(string(initialConnID), sess))
|
|
for _, f := range queuedFrames {
|
|
nf := f.(*wire.NewConnectionIDFrame)
|
|
Expect(replacedWithClosed).To(HaveKeyWithValue(string(nf.ConnectionID), sess))
|
|
}
|
|
})
|
|
})
|