uquic/client_multiplexer_test.go

105 lines
3.8 KiB
Go

package quic
import (
"bytes"
"errors"
"time"
"github.com/golang/mock/gomock"
"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("Client Multiplexer", func() {
getPacket := func(connID protocol.ConnectionID) []byte {
buf := &bytes.Buffer{}
err := (&wire.Header{
DestConnectionID: connID,
PacketNumberLen: protocol.PacketNumberLen1,
}).Write(buf, protocol.PerspectiveServer, protocol.VersionWhatever)
Expect(err).ToNot(HaveOccurred())
return buf.Bytes()
}
It("adds a new packet conn and handles packets", func() {
conn := newMockPacketConn()
connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
conn.dataToRead <- getPacket(connID)
packetHandler := NewMockQuicSession(mockCtrl)
handledPacket := make(chan struct{})
packetHandler.EXPECT().handlePacket(gomock.Any()).Do(func(_ *receivedPacket) {
close(handledPacket)
})
getClientMultiplexer().Add(conn, connID, packetHandler)
Eventually(handledPacket).Should(BeClosed())
// makes the listen go routine return
packetHandler.EXPECT().Close(gomock.Any()).AnyTimes()
close(conn.dataToRead)
})
It("handles packets for different packet handlers on the same packet conn", func() {
conn := newMockPacketConn()
connID1 := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
connID2 := protocol.ConnectionID{8, 7, 6, 5, 4, 3, 2, 1}
conn.dataToRead <- getPacket(connID1)
conn.dataToRead <- getPacket(connID2)
packetHandler1 := NewMockQuicSession(mockCtrl)
packetHandler2 := NewMockQuicSession(mockCtrl)
handledPacket1 := make(chan struct{})
handledPacket2 := make(chan struct{})
packetHandler1.EXPECT().handlePacket(gomock.Any()).Do(func(p *receivedPacket) {
Expect(p.header.DestConnectionID).To(Equal(connID1))
close(handledPacket1)
})
packetHandler2.EXPECT().handlePacket(gomock.Any()).Do(func(p *receivedPacket) {
Expect(p.header.DestConnectionID).To(Equal(connID2))
close(handledPacket2)
})
getClientMultiplexer().Add(conn, connID1, packetHandler1)
getClientMultiplexer().Add(conn, connID2, packetHandler2)
Eventually(handledPacket1).Should(BeClosed())
Eventually(handledPacket2).Should(BeClosed())
// makes the listen go routine return
packetHandler1.EXPECT().Close(gomock.Any()).AnyTimes()
packetHandler2.EXPECT().Close(gomock.Any()).AnyTimes()
close(conn.dataToRead)
})
It("drops unparseable packets", func() {
conn := newMockPacketConn()
connID := protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}
conn.dataToRead <- []byte("invalid header")
packetHandler := NewMockQuicSession(mockCtrl)
getClientMultiplexer().Add(conn, connID, packetHandler)
time.Sleep(100 * time.Millisecond) // give the listen go routine some time to process the packet
packetHandler.EXPECT().Close(gomock.Any()).AnyTimes()
close(conn.dataToRead)
})
It("drops packets for unknown receivers", func() {
conn := newMockPacketConn()
conn.dataToRead <- getPacket(protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8})
packetHandler := NewMockQuicSession(mockCtrl)
getClientMultiplexer().Add(conn, protocol.ConnectionID{8, 7, 6, 5, 4, 3, 2, 1}, packetHandler)
time.Sleep(100 * time.Millisecond) // give the listen go routine some time to process the packet
// makes the listen go routine return
packetHandler.EXPECT().Close(gomock.Any()).AnyTimes()
close(conn.dataToRead)
})
It("closes the packet handlers when reading from the conn fails", func() {
conn := newMockPacketConn()
testErr := errors.New("test error")
conn.readErr = testErr
done := make(chan struct{})
packetHandler := NewMockQuicSession(mockCtrl)
packetHandler.EXPECT().Close(testErr).Do(func(error) {
close(done)
})
getClientMultiplexer().Add(conn, protocol.ConnectionID{1, 2, 3, 4, 5, 6, 7, 8}, packetHandler)
Eventually(done).Should(BeClosed())
})
})