mirror of
https://github.com/refraction-networking/uquic.git
synced 2025-04-03 20:27:35 +03:00
9fad63ff50
Use a mock newClientSession. That way, it’s a lot easier to test dialing new connections.
344 lines
11 KiB
Go
344 lines
11 KiB
Go
package quic
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"net"
|
|
|
|
"github.com/lucas-clemente/quic-go/protocol"
|
|
"github.com/lucas-clemente/quic-go/qerr"
|
|
|
|
. "github.com/onsi/ginkgo"
|
|
. "github.com/onsi/gomega"
|
|
)
|
|
|
|
var _ = Describe("Client", func() {
|
|
var (
|
|
cl *client
|
|
config *Config
|
|
sess *mockSession
|
|
packetConn *mockPacketConn
|
|
addr net.Addr
|
|
|
|
originalClientSessConstructor func(conn connection, hostname string, v protocol.VersionNumber, connectionID protocol.ConnectionID, config *Config, negotiatedVersions []protocol.VersionNumber) (packetHandler, <-chan handshakeEvent, error)
|
|
)
|
|
|
|
BeforeEach(func() {
|
|
originalClientSessConstructor = newClientSession
|
|
Eventually(areSessionsRunning).Should(BeFalse())
|
|
msess, _, _ := newMockSession(nil, 0, 0, nil, nil)
|
|
sess = msess.(*mockSession)
|
|
packetConn = &mockPacketConn{}
|
|
config = &Config{
|
|
Versions: []protocol.VersionNumber{protocol.SupportedVersions[0], 77, 78},
|
|
}
|
|
addr = &net.UDPAddr{IP: net.IPv4(192, 168, 100, 200), Port: 1337}
|
|
cl = &client{
|
|
config: config,
|
|
connectionID: 0x1337,
|
|
session: sess,
|
|
version: protocol.SupportedVersions[0],
|
|
conn: &conn{pconn: packetConn, currentAddr: addr},
|
|
errorChan: make(chan struct{}),
|
|
}
|
|
})
|
|
|
|
AfterEach(func() {
|
|
newClientSession = originalClientSessConstructor
|
|
})
|
|
|
|
AfterEach(func() {
|
|
if s, ok := cl.session.(*session); ok {
|
|
s.Close(nil)
|
|
}
|
|
Eventually(areSessionsRunning).Should(BeFalse())
|
|
})
|
|
|
|
Context("Dialing", func() {
|
|
BeforeEach(func() {
|
|
newClientSession = func(
|
|
_ connection,
|
|
_ string,
|
|
_ protocol.VersionNumber,
|
|
_ protocol.ConnectionID,
|
|
_ *Config,
|
|
_ []protocol.VersionNumber,
|
|
) (packetHandler, <-chan handshakeEvent, error) {
|
|
return sess, sess.handshakeChan, nil
|
|
}
|
|
})
|
|
|
|
It("dials non-forward-secure", func(done Done) {
|
|
var dialedSess Session
|
|
go func() {
|
|
defer GinkgoRecover()
|
|
var err error
|
|
dialedSess, err = DialNonFWSecure(packetConn, addr, "quic.clemente.io:1337", config)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
}()
|
|
Consistently(func() Session { return dialedSess }).Should(BeNil())
|
|
sess.handshakeChan <- handshakeEvent{encLevel: protocol.EncryptionSecure}
|
|
Eventually(func() Session { return dialedSess }).ShouldNot(BeNil())
|
|
close(done)
|
|
})
|
|
|
|
It("Dial only returns after the handshake is complete", func(done Done) {
|
|
var dialedSess Session
|
|
go func() {
|
|
defer GinkgoRecover()
|
|
var err error
|
|
dialedSess, err = Dial(packetConn, addr, "quic.clemente.io:1337", config)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
}()
|
|
sess.handshakeChan <- handshakeEvent{encLevel: protocol.EncryptionSecure}
|
|
Consistently(func() Session { return dialedSess }).Should(BeNil())
|
|
close(sess.handshakeComplete)
|
|
Eventually(func() Session { return dialedSess }).ShouldNot(BeNil())
|
|
close(done)
|
|
})
|
|
|
|
It("resolves the address", func(done Done) {
|
|
var cconn connection
|
|
newClientSession = func(
|
|
conn connection,
|
|
_ string,
|
|
_ protocol.VersionNumber,
|
|
_ protocol.ConnectionID,
|
|
_ *Config,
|
|
_ []protocol.VersionNumber,
|
|
) (packetHandler, <-chan handshakeEvent, error) {
|
|
cconn = conn
|
|
return sess, nil, nil
|
|
}
|
|
go DialAddr("localhost:17890", &Config{})
|
|
Eventually(func() connection { return cconn }).ShouldNot(BeNil())
|
|
Expect(cconn.RemoteAddr().String()).To(Equal("127.0.0.1:17890"))
|
|
close(done)
|
|
})
|
|
|
|
It("returns an error that occurs while waiting for the connection to become secure", func(done Done) {
|
|
testErr := errors.New("early handshake error")
|
|
var dialErr error
|
|
go func() {
|
|
_, dialErr = Dial(packetConn, addr, "quic.clemente.io:1337", config)
|
|
}()
|
|
sess.handshakeChan <- handshakeEvent{err: testErr}
|
|
Eventually(func() error { return dialErr }).Should(MatchError(testErr))
|
|
close(done)
|
|
})
|
|
|
|
It("returns an error that occurs while waiting for the handshake to complete", func(done Done) {
|
|
testErr := errors.New("late handshake error")
|
|
var dialErr error
|
|
go func() {
|
|
_, dialErr = Dial(packetConn, addr, "quic.clemente.io:1337", config)
|
|
}()
|
|
sess.handshakeChan <- handshakeEvent{encLevel: protocol.EncryptionSecure}
|
|
sess.handshakeComplete <- testErr
|
|
Eventually(func() error { return dialErr }).Should(MatchError(testErr))
|
|
close(done)
|
|
})
|
|
|
|
It("uses all supported versions, if none are specified in the quic.Config", func() {
|
|
c := populateClientConfig(&Config{})
|
|
Expect(c.Versions).To(Equal(protocol.SupportedVersions))
|
|
})
|
|
|
|
It("errors when receiving an invalid first packet from the server", func(done Done) {
|
|
packetConn.dataToRead = []byte{0xff}
|
|
_, err := Dial(packetConn, addr, "quic.clemente.io:1337", config)
|
|
Expect(err).To(HaveOccurred())
|
|
close(done)
|
|
})
|
|
|
|
It("errors when receiving an error from the connection", func(done Done) {
|
|
testErr := errors.New("connection error")
|
|
packetConn.readErr = testErr
|
|
_, err := Dial(packetConn, addr, "quic.clemente.io:1337", config)
|
|
Expect(err).To(MatchError(testErr))
|
|
close(done)
|
|
})
|
|
|
|
It("errors if it can't create a session", func() {
|
|
testErr := errors.New("error creating session")
|
|
newClientSession = func(
|
|
_ connection,
|
|
_ string,
|
|
_ protocol.VersionNumber,
|
|
_ protocol.ConnectionID,
|
|
_ *Config,
|
|
_ []protocol.VersionNumber,
|
|
) (packetHandler, <-chan handshakeEvent, error) {
|
|
return nil, nil, testErr
|
|
}
|
|
_, err := DialNonFWSecure(packetConn, addr, "quic.clemente.io:1337", config)
|
|
Expect(err).To(MatchError(testErr))
|
|
})
|
|
|
|
Context("version negotiation", func() {
|
|
It("recognizes that a packet without VersionFlag means that the server accepted the suggested version", func() {
|
|
ph := PublicHeader{
|
|
PacketNumber: 1,
|
|
PacketNumberLen: protocol.PacketNumberLen2,
|
|
ConnectionID: 0x1337,
|
|
}
|
|
b := &bytes.Buffer{}
|
|
err := ph.Write(b, protocol.VersionWhatever, protocol.PerspectiveServer)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
err = cl.handlePacket(nil, b.Bytes())
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(cl.versionNegotiated).To(BeTrue())
|
|
})
|
|
|
|
It("changes the version after receiving a version negotiation packet", func() {
|
|
var negotiatedVersions []protocol.VersionNumber
|
|
newClientSession = func(
|
|
_ connection,
|
|
_ string,
|
|
_ protocol.VersionNumber,
|
|
connectionID protocol.ConnectionID,
|
|
_ *Config,
|
|
negotiatedVersionsP []protocol.VersionNumber,
|
|
) (packetHandler, <-chan handshakeEvent, error) {
|
|
negotiatedVersions = negotiatedVersionsP
|
|
return &mockSession{
|
|
connectionID: connectionID,
|
|
}, nil, nil
|
|
}
|
|
|
|
newVersion := protocol.VersionNumber(77)
|
|
Expect(config.Versions).To(ContainElement(newVersion))
|
|
Expect(newVersion).ToNot(Equal(cl.version))
|
|
Expect(sess.packetCount).To(BeZero())
|
|
cl.connectionID = 0x1337
|
|
err := cl.handlePacket(nil, composeVersionNegotiation(0x1337, []protocol.VersionNumber{newVersion}))
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(cl.version).To(Equal(newVersion))
|
|
Expect(cl.versionNegotiated).To(BeTrue())
|
|
// it swapped the sessions
|
|
// Expect(cl.session).ToNot(Equal(sess))
|
|
Expect(cl.connectionID).ToNot(Equal(0x1337)) // it generated a new connection ID
|
|
Expect(err).ToNot(HaveOccurred())
|
|
// it didn't pass the version negoation packet to the old session (since it has no payload)
|
|
Expect(sess.packetCount).To(BeZero())
|
|
Expect(negotiatedVersions).To(Equal([]protocol.VersionNumber{newVersion}))
|
|
})
|
|
|
|
It("errors if no matching version is found", func() {
|
|
err := cl.handlePacket(nil, composeVersionNegotiation(0x1337, []protocol.VersionNumber{1}))
|
|
Expect(err).To(MatchError(qerr.InvalidVersion))
|
|
})
|
|
|
|
It("errors if the version is supported by quic-go, but disabled by the quic.Config", func() {
|
|
v := protocol.SupportedVersions[1]
|
|
Expect(v).ToNot(Equal(cl.version))
|
|
Expect(config.Versions).ToNot(ContainElement(v))
|
|
err := cl.handlePacket(nil, composeVersionNegotiation(0x1337, []protocol.VersionNumber{v}))
|
|
Expect(err).To(MatchError(qerr.InvalidVersion))
|
|
})
|
|
|
|
It("changes to the version preferred by the quic.Config", func() {
|
|
err := cl.handlePacket(nil, composeVersionNegotiation(0x1337, []protocol.VersionNumber{config.Versions[2], config.Versions[1]}))
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(cl.version).To(Equal(config.Versions[1]))
|
|
})
|
|
|
|
It("ignores delayed version negotiation packets", func() {
|
|
// if the version was not yet negotiated, handlePacket would return a VersionNegotiationMismatch error, see above test
|
|
cl.versionNegotiated = true
|
|
Expect(sess.packetCount).To(BeZero())
|
|
err := cl.handlePacket(nil, composeVersionNegotiation(0x1337, []protocol.VersionNumber{1}))
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(cl.versionNegotiated).To(BeTrue())
|
|
Expect(sess.packetCount).To(BeZero())
|
|
})
|
|
|
|
It("drops version negotiation packets that contain the offered version", func() {
|
|
ver := cl.version
|
|
err := cl.handlePacket(nil, composeVersionNegotiation(0x1337, []protocol.VersionNumber{ver}))
|
|
Expect(err).ToNot(HaveOccurred())
|
|
Expect(cl.version).To(Equal(ver))
|
|
})
|
|
})
|
|
})
|
|
|
|
It("errors on invalid public header", func() {
|
|
err := cl.handlePacket(nil, nil)
|
|
Expect(err.(*qerr.QuicError).ErrorCode).To(Equal(qerr.InvalidPacketHeader))
|
|
})
|
|
|
|
It("creates new sessions with the right parameters", func(done Done) {
|
|
c := make(chan struct{})
|
|
var cconn connection
|
|
var hostname string
|
|
var version protocol.VersionNumber
|
|
var conf *Config
|
|
newClientSession = func(
|
|
connP connection,
|
|
hostnameP string,
|
|
versionP protocol.VersionNumber,
|
|
_ protocol.ConnectionID,
|
|
configP *Config,
|
|
_ []protocol.VersionNumber,
|
|
) (packetHandler, <-chan handshakeEvent, error) {
|
|
cconn = connP
|
|
hostname = hostnameP
|
|
version = versionP
|
|
conf = configP
|
|
close(c)
|
|
return sess, nil, nil
|
|
}
|
|
go func() {
|
|
_, err := Dial(packetConn, addr, "quic.clemente.io:1337", config)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
}()
|
|
<-c
|
|
Expect(cconn.(*conn).pconn).To(Equal(packetConn))
|
|
Expect(hostname).To(Equal("quic.clemente.io"))
|
|
Expect(version).To(Equal(cl.version))
|
|
Expect(conf).To(Equal(config))
|
|
close(done)
|
|
})
|
|
|
|
Context("handling packets", func() {
|
|
It("handles packets", func() {
|
|
ph := PublicHeader{
|
|
PacketNumber: 1,
|
|
PacketNumberLen: protocol.PacketNumberLen2,
|
|
ConnectionID: 0x1337,
|
|
}
|
|
b := &bytes.Buffer{}
|
|
err := ph.Write(b, protocol.Version36, protocol.PerspectiveServer)
|
|
Expect(err).ToNot(HaveOccurred())
|
|
packetConn.dataToRead = b.Bytes()
|
|
|
|
Expect(sess.packetCount).To(BeZero())
|
|
var stoppedListening bool
|
|
go func() {
|
|
cl.listen()
|
|
// it should continue listening when receiving valid packets
|
|
stoppedListening = true
|
|
}()
|
|
|
|
Eventually(func() int { return sess.packetCount }).Should(Equal(1))
|
|
Expect(sess.closed).To(BeFalse())
|
|
Consistently(func() bool { return stoppedListening }).Should(BeFalse())
|
|
})
|
|
|
|
It("closes the session when encountering an error while handling a packet", func() {
|
|
Expect(sess.closeReason).ToNot(HaveOccurred())
|
|
packetConn.dataToRead = bytes.Repeat([]byte{0xff}, 100)
|
|
cl.listen()
|
|
Expect(sess.closed).To(BeTrue())
|
|
Expect(sess.closeReason).To(HaveOccurred())
|
|
})
|
|
|
|
It("closes the session when encountering an error while reading from the connection", func() {
|
|
testErr := errors.New("test error")
|
|
packetConn.readErr = testErr
|
|
cl.listen()
|
|
Expect(sess.closed).To(BeTrue())
|
|
Expect(sess.closeReason).To(MatchError(testErr))
|
|
})
|
|
})
|
|
})
|