implement sending of stateless resets

This commit is contained in:
Marten Seemann 2019-03-06 13:58:32 +09:00
parent 6cf20310fe
commit 94046cdb4b
13 changed files with 199 additions and 46 deletions

View file

@ -3,6 +3,7 @@ package quic
import (
"bytes"
"errors"
"net"
"time"
"github.com/golang/mock/gomock"
@ -40,7 +41,7 @@ var _ = Describe("Packet Handler Map", func() {
BeforeEach(func() {
conn = newMockPacketConn()
handler = newPacketHandlerMap(conn, 5, utils.DefaultLogger).(*packetHandlerMap)
handler = newPacketHandlerMap(conn, 5, nil, utils.DefaultLogger).(*packetHandlerMap)
})
AfterEach(func() {
@ -163,6 +164,14 @@ var _ = Describe("Packet Handler Map", func() {
})
Context("stateless reset handling", func() {
It("generates stateless reset tokens", func() {
connID1 := []byte{0xde, 0xad, 0xbe, 0xef}
connID2 := []byte{0xde, 0xca, 0xfb, 0xad}
token1 := handler.GetStatelessResetToken(connID1)
Expect(handler.GetStatelessResetToken(connID1)).To(Equal(token1))
Expect(handler.GetStatelessResetToken(connID2)).ToNot(Equal(token1))
})
It("handles stateless resets", func() {
packetHandler := NewMockPacketHandler(mockCtrl)
token := [16]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
@ -195,16 +204,30 @@ var _ = Describe("Packet Handler Map", func() {
It("deletes reset tokens", func() {
handler.deleteRetiredSessionsAfter = scaleDuration(10 * time.Millisecond)
connID := protocol.ConnectionID{0xde, 0xad, 0xbe, 0xef, 0x42}
packetHandler := NewMockPacketHandler(mockCtrl)
handler.Add(connID, packetHandler)
token := [16]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
handler.AddResetToken(token, NewMockPacketHandler(mockCtrl))
handler.RemoveResetToken(token)
handler.handlePacket(nil, nil, getPacket(connID))
// don't EXPECT any calls to handlePacket of the MockPacketHandler
packet := append([]byte{0x40, 0xde, 0xca, 0xfb, 0xad, 0x99} /* short header packet */, make([]byte, 50)...)
packet = append(packet, token[:]...)
handler.handlePacket(nil, nil, packet)
// don't EXPECT any calls to handlePacket of the MockPacketHandler
Expect(handler.resetTokens).To(BeEmpty())
packetHandler.EXPECT().handlePacket(gomock.Any())
p := append([]byte{0x40} /* short header packet */, connID.Bytes()...)
p = append(p, make([]byte, 50)...)
p = append(p, token[:]...)
handler.handlePacket(nil, nil, p)
// destroy() would be called from a separate go routine
// make sure we give it enough time to be called to cause an error here
time.Sleep(scaleDuration(25 * time.Millisecond))
})
It("sends stateless resets", func() {
addr := &net.UDPAddr{IP: net.IPv4(192, 168, 0, 1), Port: 1337}
p := append([]byte{40}, make([]byte, 100)...)
handler.handlePacket(addr, getPacketBuffer(), p)
var reset mockPacketConnWrite
Eventually(conn.dataWritten).Should(Receive(&reset))
Expect(reset.to).To(Equal(addr))
Expect(reset.data[0] & 0x80).To(BeZero()) // short header packet
Expect(reset.data).To(HaveLen(protocol.MinStatelessResetSize))
})
})