mirror of
https://github.com/refraction-networking/uquic.git
synced 2025-04-04 20:57:36 +03:00
fix multiple race conditions in the proxy tests
This commit is contained in:
Marten Seemann
parent
508586ea7e
commit
e513cb7ad2
1 changed files with 56 additions and 44 deletions
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@ -84,8 +84,8 @@ var _ = Describe("QUIC Proxy", func() {
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Context("Proxy tests", func() {
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var (
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serverConn *net.UDPConn
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serverReceivedPackets []packetData
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serverNumPacketsSent int
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serverNumPacketsSent int32
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serverReceivedPackets chan packetData
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clientConn *net.UDPConn
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proxy *QuicProxy
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)
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@ -98,9 +98,20 @@ var _ = Describe("QUIC Proxy", func() {
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Expect(err).ToNot(HaveOccurred())
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}
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// getClientDict returns a copy of the clientDict map
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getClientDict := func() map[string]*connection {
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d := make(map[string]*connection)
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proxy.mutex.Lock()
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defer proxy.mutex.Unlock()
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for k, v := range proxy.clientDict {
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d[k] = v
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}
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return d
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}
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BeforeEach(func() {
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serverReceivedPackets = serverReceivedPackets[:0]
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serverNumPacketsSent = 0
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serverReceivedPackets = make(chan packetData, 100)
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atomic.StoreInt32(&serverNumPacketsSent, 0)
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// setup a dump UDP server on port 7331
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// in production this would be a QUIC server
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@ -118,10 +129,10 @@ var _ = Describe("QUIC Proxy", func() {
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return
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}
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data := buf[0:n]
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serverReceivedPackets = append(serverReceivedPackets, packetData(data))
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serverReceivedPackets <- packetData(data)
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// echo the packet
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serverConn.WriteToUDP(data, addr)
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serverNumPacketsSent++
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atomic.AddInt32(&serverNumPacketsSent, 1)
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}
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}()
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})
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@ -143,9 +154,9 @@ var _ = Describe("QUIC Proxy", func() {
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_, err := clientConn.Write(makePacket(1, []byte("foobar")))
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() map[string]*connection { return proxy.clientDict }).Should(HaveLen(1))
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Eventually(getClientDict).Should(HaveLen(1))
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var conn *connection
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for _, conn = range proxy.clientDict {
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for _, conn = range getClientDict() {
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Expect(atomic.LoadUint64(&conn.incomingPacketCounter)).To(Equal(uint64(1)))
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}
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@ -153,10 +164,10 @@ var _ = Describe("QUIC Proxy", func() {
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_, err = clientConn.Write(makePacket(2, []byte("decafbad")))
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() []packetData { return serverReceivedPackets }).Should(HaveLen(2))
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Expect(proxy.clientDict).To(HaveLen(1))
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Expect(string(serverReceivedPackets[0])).To(ContainSubstring("foobar"))
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Expect(string(serverReceivedPackets[1])).To(ContainSubstring("decafbad"))
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Eventually(serverReceivedPackets).Should(HaveLen(2))
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Expect(getClientDict()).To(HaveLen(1))
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Expect(string(<-serverReceivedPackets)).To(ContainSubstring("foobar"))
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Expect(string(<-serverReceivedPackets)).To(ContainSubstring("decafbad"))
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})
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It("relays packets from the server to the client", func() {
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@ -165,10 +176,10 @@ var _ = Describe("QUIC Proxy", func() {
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_, err := clientConn.Write(makePacket(1, []byte("foobar")))
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Expect(err).ToNot(HaveOccurred())
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Eventually(func() map[string]*connection { return proxy.clientDict }).Should(HaveLen(1))
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Eventually(getClientDict).Should(HaveLen(1))
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var key string
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var conn *connection
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for key, conn = range proxy.clientDict {
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for key, conn = range getClientDict() {
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Eventually(func() uint64 { return atomic.LoadUint64(&conn.outgoingPacketCounter) }).Should(Equal(uint64(1)))
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}
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@ -176,10 +187,13 @@ var _ = Describe("QUIC Proxy", func() {
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_, err = clientConn.Write(makePacket(2, []byte("decafbad")))
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Expect(err).ToNot(HaveOccurred())
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Expect(proxy.clientDict).To(HaveLen(1))
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Eventually(func() uint64 { return proxy.clientDict[key].outgoingPacketCounter }).Should(BeEquivalentTo(2))
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Expect(getClientDict()).To(HaveLen(1))
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Eventually(func() uint64 {
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conn := getClientDict()[key]
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return atomic.LoadUint64(&conn.outgoingPacketCounter)
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}).Should(BeEquivalentTo(2))
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var clientReceivedPackets []packetData
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clientReceivedPackets := make(chan packetData, 2)
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// receive the packets echoed by the server on client side
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go func() {
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for {
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@ -190,16 +204,15 @@ var _ = Describe("QUIC Proxy", func() {
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return
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}
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data := buf[0:n]
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clientReceivedPackets = append(clientReceivedPackets, packetData(data))
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clientReceivedPackets <- packetData(data)
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}
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}()
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Eventually(func() []packetData { return serverReceivedPackets }).Should(HaveLen(2))
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Expect(serverReceivedPackets).To(HaveLen(2))
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Expect(serverNumPacketsSent).To(Equal(2))
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Eventually(func() []packetData { return clientReceivedPackets }).Should(HaveLen(2))
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Expect(string(clientReceivedPackets[0])).To(ContainSubstring("foobar"))
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Expect(string(clientReceivedPackets[1])).To(ContainSubstring("decafbad"))
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Eventually(serverReceivedPackets).Should(HaveLen(2))
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Expect(atomic.LoadInt32(&serverNumPacketsSent)).To(BeEquivalentTo(2))
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Eventually(clientReceivedPackets).Should(HaveLen(2))
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Expect(string(<-clientReceivedPackets)).To(ContainSubstring("foobar"))
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Expect(string(<-clientReceivedPackets)).To(ContainSubstring("decafbad"))
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})
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})
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@ -213,16 +226,16 @@ var _ = Describe("QUIC Proxy", func() {
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}
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startProxy(opts)
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// send 6 packets
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for i := 1; i <= 6; i++ {
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_, err := clientConn.Write(makePacket(protocol.PacketNumber(i), []byte("foobar"+strconv.Itoa(i))))
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Expect(err).ToNot(HaveOccurred())
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}
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Eventually(func() []packetData { return serverReceivedPackets }).Should(HaveLen(3))
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Consistently(func() []packetData { return serverReceivedPackets }).Should(HaveLen(3))
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Eventually(serverReceivedPackets).Should(HaveLen(3))
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Consistently(serverReceivedPackets).Should(HaveLen(3))
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})
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It("drops outgoing packets", func() {
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const numPackets = 6
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opts := Opts{
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RemoteAddr: serverAddr,
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DropPacket: func(d Direction, p protocol.PacketNumber) bool {
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@ -231,7 +244,7 @@ var _ = Describe("QUIC Proxy", func() {
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}
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startProxy(opts)
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var clientReceivedPackets []packetData
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clientReceivedPackets := make(chan packetData, numPackets)
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// receive the packets echoed by the server on client side
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go func() {
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for {
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@ -242,18 +255,17 @@ var _ = Describe("QUIC Proxy", func() {
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return
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}
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data := buf[0:n]
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clientReceivedPackets = append(clientReceivedPackets, packetData(data))
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clientReceivedPackets <- packetData(data)
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}
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}()
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// send 6 packets
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for i := 1; i <= 6; i++ {
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for i := 1; i <= numPackets; i++ {
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_, err := clientConn.Write(makePacket(protocol.PacketNumber(i), []byte("foobar"+strconv.Itoa(i))))
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Expect(err).ToNot(HaveOccurred())
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}
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Eventually(func() []packetData { return clientReceivedPackets }).Should(HaveLen(3))
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Consistently(func() []packetData { return clientReceivedPackets }).Should(HaveLen(3))
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Eventually(clientReceivedPackets).Should(HaveLen(numPackets / 2))
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Consistently(clientReceivedPackets).Should(HaveLen(numPackets / 2))
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})
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})
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@ -288,15 +300,16 @@ var _ = Describe("QUIC Proxy", func() {
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_, err := clientConn.Write(makePacket(protocol.PacketNumber(i), []byte("foobar"+strconv.Itoa(i))))
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Expect(err).ToNot(HaveOccurred())
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}
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Eventually(func() []packetData { return serverReceivedPackets }).Should(HaveLen(1))
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Eventually(serverReceivedPackets).Should(HaveLen(1))
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expectDelay(start, delay, 1)
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Eventually(func() []packetData { return serverReceivedPackets }).Should(HaveLen(2))
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Eventually(serverReceivedPackets).Should(HaveLen(2))
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expectDelay(start, delay, 2)
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Eventually(func() []packetData { return serverReceivedPackets }).Should(HaveLen(3))
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Eventually(serverReceivedPackets).Should(HaveLen(3))
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expectDelay(start, delay, 3)
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})
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It("delays outgoing packets", func() {
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const numPackets = 3
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delay := 300 * time.Millisecond
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opts := Opts{
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RemoteAddr: serverAddr,
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@ -312,7 +325,7 @@ var _ = Describe("QUIC Proxy", func() {
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}
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startProxy(opts)
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var clientReceivedPackets []packetData
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clientReceivedPackets := make(chan packetData, numPackets)
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// receive the packets echoed by the server on client side
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go func() {
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for {
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@ -323,24 +336,23 @@ var _ = Describe("QUIC Proxy", func() {
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return
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}
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data := buf[0:n]
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clientReceivedPackets = append(clientReceivedPackets, packetData(data))
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clientReceivedPackets <- packetData(data)
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}
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}()
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// send 3 packets
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start := time.Now()
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for i := 1; i <= 3; i++ {
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for i := 1; i <= numPackets; i++ {
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_, err := clientConn.Write(makePacket(protocol.PacketNumber(i), []byte("foobar"+strconv.Itoa(i))))
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Expect(err).ToNot(HaveOccurred())
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}
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// the packets should have arrived immediately at the server
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Eventually(func() []packetData { return serverReceivedPackets }).Should(HaveLen(3))
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Eventually(serverReceivedPackets).Should(HaveLen(3))
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expectDelay(start, delay, 0)
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Eventually(func() []packetData { return clientReceivedPackets }).Should(HaveLen(1))
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Eventually(clientReceivedPackets).Should(HaveLen(1))
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expectDelay(start, delay, 1)
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Eventually(func() []packetData { return clientReceivedPackets }).Should(HaveLen(2))
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Eventually(clientReceivedPackets).Should(HaveLen(2))
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expectDelay(start, delay, 2)
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Eventually(func() []packetData { return clientReceivedPackets }).Should(HaveLen(3))
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Eventually(clientReceivedPackets).Should(HaveLen(3))
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expectDelay(start, delay, 3)
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})
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})
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