Use constant (TestInitialSequenceNumber) instead of integer (789) in tests.
PiperOrigin-RevId: 364596526
diff --git a/pkg/tcpip/transport/tcp/tcp_test.go b/pkg/tcpip/transport/tcp/tcp_test.go
index fd499a4..6c86ae1 100644
--- a/pkg/tcpip/transport/tcp/tcp_test.go
+++ b/pkg/tcpip/transport/tcp/tcp_test.go
@@ -165,7 +165,7 @@
stats := c.Stack().Stats()
want := stats.TCP.ActiveConnectionOpenings.Value() + 1
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
if got := stats.TCP.ActiveConnectionOpenings.Value(); got != want {
t.Errorf("got stats.TCP.ActtiveConnectionOpenings.Value() = %d, want = %d", got, want)
}
@@ -178,7 +178,7 @@
stats := c.Stack().Stats()
want := stats.TCP.FailedConnectionAttempts.Value()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
if got := stats.TCP.FailedConnectionAttempts.Value(); got != want {
t.Errorf("got stats.TCP.FailedConnectionAttempts.Value() = %d, want = %d", got, want)
}
@@ -239,7 +239,7 @@
stats := c.Stack().Stats()
// SYN and ACK
want := stats.TCP.SegmentsSent.Value() + 2
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
if got := stats.TCP.SegmentsSent.Value(); got != want {
t.Errorf("got stats.TCP.SegmentsSent.Value() = %d, want = %d", got, want)
@@ -269,7 +269,7 @@
}
// Send a SYN request.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -318,7 +318,7 @@
// Send a SYN request for a closed port. This should elicit an RST
// but NOT an ICMPv4 DstUnreachable packet.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -362,7 +362,7 @@
}
// Send a SYN request.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -459,7 +459,7 @@
stats := c.Stack().Stats()
want := stats.TCP.ResetsReceived.Value() + 1
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
rcvWnd := seqnum.Size(30000)
c.CreateConnected(iss, rcvWnd, -1 /* epRcvBuf */)
@@ -483,7 +483,7 @@
stats := c.Stack().Stats()
want := stats.TCP.ResetsReceived.Value() + 1
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
rcvWnd := seqnum.Size(30000)
c.CreateConnected(iss, rcvWnd, -1 /* epRcvBuf */)
@@ -506,14 +506,14 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
}
func TestNonBlockingClose(t *testing.T) {
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
ep := c.EP
c.EP = nil
@@ -537,18 +537,19 @@
t.Fatalf("SetTransportProtocolOption(%d, &%T(%d)): %s", tcp.ProtocolNumber, opt, opt, err)
}
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
ep := c.EP
c.EP = nil
// Close the endpoint, make sure we get a FIN segment, then acknowledge
// to complete closure of sender, but don't send our own FIN.
ep.Close()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -556,7 +557,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -570,7 +571,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -612,7 +613,7 @@
t.Fatalf("SetTransportProtocolOption(%d, &%T(%d)): %s", tcp.ProtocolNumber, opt, opt, err)
}
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
ep := c.EP
c.EP = nil
@@ -625,12 +626,12 @@
}
ep.Close()
-
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -638,7 +639,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -655,7 +656,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -666,7 +667,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+2),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -690,7 +691,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
ep := c.EP
c.EP = nil
@@ -699,11 +700,12 @@
}
// Send a FIN for ESTABLISHED --> CLOSED-WAIT
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagFin | header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -713,7 +715,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -734,7 +736,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -753,7 +755,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 791,
+ SeqNum: iss.Add(1),
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -764,7 +766,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 792,
+ SeqNum: iss.Add(2),
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -804,7 +806,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
we, ch := waiter.NewChannelEntry(nil)
c.WQ.EventRegister(&we, waiter.EventIn)
@@ -813,11 +815,12 @@
ept := endpointTester{c.EP}
data := []byte{1, 2, 3}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -840,7 +843,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+len(data))),
+ checker.TCPAckNum(uint32(iss)+uint32(len(data))),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -1366,12 +1369,13 @@
// Check that data is received.
b := c.GetPacket()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, b,
checker.PayloadLen(len(data)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790), // Acknum is initial sequence number + 1
+ checker.TCPAckNum(uint32(iss)), // Acknum is initial sequence number + 1
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
checker.TOS(tos, 0),
@@ -1414,12 +1418,13 @@
// Check that data is received.
b := c.GetV6Packet()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv6(t, b,
checker.PayloadLen(len(data)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
checker.TOS(tos, 0),
@@ -1472,7 +1477,7 @@
tcpHdr := header.TCP(header.IPv4(b).Payload())
c.IRS = seqnum.Value(tcpHdr.SequenceNumber())
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
rcvWnd := seqnum.Size(30000)
c.SendPacket(nil, &context.Headers{
SrcPort: tcpHdr.DestinationPort(),
@@ -1537,7 +1542,7 @@
if test.reset {
// Send a packet with a proper ACK and a RST flag to cause the socket
// to error and close out.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
rcvWnd := seqnum.Size(30000)
c.SendPacket(nil, &context.Headers{
SrcPort: tcpHdr.DestinationPort(),
@@ -1582,7 +1587,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
we, ch := waiter.NewChannelEntry(nil)
c.WQ.EventRegister(&we, waiter.EventIn)
@@ -1593,11 +1598,12 @@
// Send second half of data first, with seqnum 3 ahead of expected.
data := []byte{1, 2, 3, 4, 5, 6}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(data[3:], &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 793,
+ SeqNum: iss.Add(3),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -1607,7 +1613,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -1621,7 +1627,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -1639,7 +1645,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+len(data))),
+ checker.TCPAckNum(uint32(iss)+uint32(len(data))),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -1650,19 +1656,20 @@
defer c.Cleanup()
rcvBufSz := math.MaxUint16
- c.CreateConnected(789, 30000, rcvBufSz)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, rcvBufSz)
ept := endpointTester{c.EP}
ept.CheckReadError(t, &tcpip.ErrWouldBlock{})
// Send 100 packets before the actual one that is expected.
data := []byte{1, 2, 3, 4, 5, 6}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for i := 0; i < 100; i++ {
c.SendPacket(data[3:], &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 796,
+ SeqNum: iss.Add(6),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -1671,19 +1678,19 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
),
)
}
- // Send packet with seqnum 793. It must be discarded because the
+ // Send packet with seqnum as initial + 3. It must be discarded because the
// out-of-order buffer was filled by the previous packets.
c.SendPacket(data[3:], &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 793,
+ SeqNum: iss.Add(3),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -1692,27 +1699,27 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
),
)
- // Now send the expected packet, seqnum 790.
+ // Now send the expected packet with initial sequence number.
c.SendPacket(data[:3], &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
- // Check that only packet 790 is acknowledged.
+ // Check that only packet with initial sequence number is acknowledged.
checker.IPv4(t, c.GetPacket(),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(793),
+ checker.TCPAckNum(uint32(iss)+3),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -1722,7 +1729,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
we, ch := waiter.NewChannelEntry(nil)
c.WQ.EventRegister(&we, waiter.EventIn)
@@ -1732,11 +1739,12 @@
ept.CheckReadError(t, &tcpip.ErrWouldBlock{})
data := []byte{1, 2, 3}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -1753,7 +1761,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+len(data))),
+ checker.TCPAckNum(uint32(iss)+uint32(len(data))),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -1780,7 +1788,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790 + len(data)),
+ SeqNum: iss.Add(seqnum.Size(len(data))),
AckNum: c.IRS.Add(seqnum.Size(2)),
RcvWnd: 30000,
})
@@ -1790,7 +1798,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
we, ch := waiter.NewChannelEntry(nil)
c.WQ.EventRegister(&we, waiter.EventIn)
@@ -1800,11 +1808,12 @@
ept.CheckReadError(t, &tcpip.ErrWouldBlock{})
data := []byte{1, 2, 3}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -1821,7 +1830,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+len(data))),
+ checker.TCPAckNum(uint32(iss)+uint32(len(data))),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -1866,7 +1875,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790 + len(data)),
+ SeqNum: iss.Add(seqnum.Size(len(data))),
AckNum: c.IRS.Add(seqnum.Size(2)),
RcvWnd: 30000,
})
@@ -1876,7 +1885,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
ept := endpointTester{c.EP}
ept.CheckReadError(t, &tcpip.ErrWouldBlock{})
@@ -1897,7 +1906,7 @@
defer c.Cleanup()
const rcvBufSz = 10
- c.CreateConnected(789, 30000, rcvBufSz)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, rcvBufSz)
we, ch := waiter.NewChannelEntry(nil)
c.WQ.EventRegister(&we, waiter.EventIn)
@@ -1913,11 +1922,12 @@
for i := range data {
data[i] = byte(i % 255)
}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -1934,7 +1944,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+len(data))),
+ checker.TCPAckNum(uint32(iss)+uint32(len(data))),
checker.TCPFlags(header.TCPFlagAck),
checker.TCPWindow(0),
),
@@ -1956,7 +1966,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+len(data))),
+ checker.TCPAckNum(uint32(iss)+uint32(len(data))),
checker.TCPFlags(header.TCPFlagAck),
checker.TCPWindow(10),
),
@@ -1996,8 +2006,7 @@
}
payload := generateRandomPayload(t, payloadSize)
payloadLen := seqnum.Size(len(payload))
- iss := seqnum.Value(789)
- seqNum := iss.Add(1)
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
// Send payload to the endpoint and return the advertised receive window
// from the endpoint.
@@ -2005,12 +2014,12 @@
c.SendPacket(payload, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
- SeqNum: seqNum,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
Flags: header.TCPFlagAck,
RcvWnd: 30000,
})
- seqNum = seqNum.Add(payloadLen)
+ iss = iss.Add(payloadLen)
pkt := c.GetPacket()
return uint32(header.TCP(header.IPv4(pkt).Payload()).WindowSize()) << c.RcvdWindowScale
@@ -2054,9 +2063,8 @@
// the right edge of the window does not shrink.
// NOTE: Netstack doubles the value specified here.
rcvBufSize := 65536
- iss := seqnum.Value(789)
// Enable window scaling with a scale of zero from our end.
- c.CreateConnectedWithRawOptions(iss, 30000, rcvBufSize, []byte{
+ c.CreateConnectedWithRawOptions(context.TestInitialSequenceNumber, 30000, rcvBufSize, []byte{
header.TCPOptionWS, 3, 0, header.TCPOptionNOP,
})
@@ -2069,13 +2077,13 @@
// Send a 1 byte payload so that we can record the current receive window.
// Send a payload of half the size of rcvBufSize.
- seqNum := iss.Add(1)
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
payload := []byte{1}
c.SendPacket(payload, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqNum,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -2092,20 +2100,20 @@
t.Fatalf("got data: %v, want: %v", got, want)
}
- seqNum = seqNum.Add(1)
// Verify that the ACK does not shrink the window.
pkt := c.GetPacket()
+ iss = iss.Add(1)
checker.IPv4(t, pkt,
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(seqNum)),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
),
)
// Stash the initial window.
initialWnd := header.TCP(header.IPv4(pkt).Payload()).WindowSize() << c.RcvdWindowScale
- initialLastAcceptableSeq := seqNum.Add(seqnum.Size(initialWnd))
+ initialLastAcceptableSeq := iss.Add(seqnum.Size(initialWnd))
// Now shrink the receive buffer to half its original size.
if err := c.EP.SetSockOptInt(tcpip.ReceiveBufferSizeOption, rcvBufSize/2); err != nil {
t.Fatalf("SetSockOptInt(ReceiveBufferSizeOption, 5) failed: %s", err)
@@ -2117,11 +2125,11 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqNum,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
- seqNum = seqNum.Add(seqnum.Size(rcvBufSize / 2))
+ iss = iss.Add(seqnum.Size(rcvBufSize / 2))
// Verify that the ACK does not shrink the window.
pkt = c.GetPacket()
@@ -2129,12 +2137,12 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(seqNum)),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
),
)
newWnd := header.TCP(header.IPv4(pkt).Payload()).WindowSize() << c.RcvdWindowScale
- newLastAcceptableSeq := seqNum.Add(seqnum.Size(newWnd))
+ newLastAcceptableSeq := iss.Add(seqnum.Size(newWnd))
if newLastAcceptableSeq.LessThan(initialLastAcceptableSeq) {
t.Fatalf("receive window shrunk unexpectedly got: %d, want >= %d", newLastAcceptableSeq, initialLastAcceptableSeq)
}
@@ -2145,17 +2153,17 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqNum,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
- seqNum = seqNum.Add(seqnum.Size(rcvBufSize / 2))
+ iss = iss.Add(seqnum.Size(rcvBufSize / 2))
checker.IPv4(t, c.GetPacket(),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(seqNum)),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
checker.TCPWindow(0),
),
@@ -2173,7 +2181,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(seqNum)),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
checker.TCPWindow(uint16(rcvBufSize/2)>>c.RcvdWindowScale),
),
@@ -2184,7 +2192,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
data := []byte{1, 2, 3}
var r bytes.Reader
@@ -2195,12 +2203,13 @@
// Check that data is received.
b := c.GetPacket()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, b,
checker.PayloadLen(len(data)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2214,7 +2223,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1 + seqnum.Size(len(data))),
RcvWnd: 30000,
})
@@ -2224,7 +2233,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789 /* iss */, 0 /* rcvWnd */, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 0 /* rcvWnd */, -1 /* epRcvBuf */)
data := []byte{1, 2, 3}
var r bytes.Reader
@@ -2235,12 +2244,13 @@
// Check if we got a zero-window probe.
b := c.GetPacket()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, b,
checker.PayloadLen(header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2250,7 +2260,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -2262,7 +2272,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2276,7 +2286,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1 + seqnum.Size(len(data))),
RcvWnd: 30000,
})
@@ -2289,7 +2299,7 @@
defer c.Cleanup()
// Set the window size greater than the maximum non-scaled window.
- c.CreateConnectedWithRawOptions(789, 30000, 65535*3, []byte{
+ c.CreateConnectedWithRawOptions(context.TestInitialSequenceNumber, 30000, 65535*3, []byte{
header.TCPOptionWS, 3, 0, header.TCPOptionNOP,
})
@@ -2303,12 +2313,13 @@
// Check that data is received, and that advertised window is 0x5fff,
// that is, that it is scaled.
b := c.GetPacket()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, b,
checker.PayloadLen(len(data)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPWindow(0x5fff),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
@@ -2322,7 +2333,7 @@
defer c.Cleanup()
// Set the window size greater than the maximum non-scaled window.
- c.CreateConnected(789, 30000, 65535*3)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, 65535*3)
data := []byte{1, 2, 3}
var r bytes.Reader
@@ -2334,12 +2345,13 @@
// Check that data is received, and that advertised window is 0xffff,
// that is, that it's not scaled.
b := c.GetPacket()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, b,
checker.PayloadLen(len(data)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPWindow(0xffff),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
@@ -2407,12 +2419,13 @@
// Check that data is received, and that advertised window is 0x5fff,
// that is, that it is scaled.
b := c.GetPacket()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, b,
checker.PayloadLen(len(data)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPWindow(0x5fff),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
@@ -2480,12 +2493,13 @@
// Check that data is received, and that advertised window is 0xffff,
// that is, that it's not scaled.
b := c.GetPacket()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, b,
checker.PayloadLen(len(data)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPWindow(0xffff),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
@@ -2502,7 +2516,7 @@
// Set the buffer size such that a window scale of 5 will be used.
const bufSz = 65535 * 10
const ws = uint32(5)
- c.CreateConnectedWithRawOptions(789, 30000, bufSz, []byte{
+ c.CreateConnectedWithRawOptions(context.TestInitialSequenceNumber, 30000, bufSz, []byte{
header.TCPOptionWS, 3, 0, header.TCPOptionNOP,
})
@@ -2510,13 +2524,14 @@
remain := 0
sent := 0
data := make([]byte, 50000)
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
// Keep writing till the window drops below len(data).
for {
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790 + sent),
+ SeqNum: iss.Add(seqnum.Size(sent)),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -2527,7 +2542,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+sent)),
+ checker.TCPAckNum(uint32(iss)+uint32(sent)),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -2545,7 +2560,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790 + sent),
+ SeqNum: iss.Add(seqnum.Size(sent)),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -2556,7 +2571,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+sent)),
+ checker.TCPAckNum(uint32(iss)+uint32(sent)),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -2594,7 +2609,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+sent)),
+ checker.TCPAckNum(uint32(iss)+uint32(sent)),
checker.TCPWindowGreaterThanEq(uint16(defaultMTU>>ws)),
checker.TCPFlags(header.TCPFlagAck),
),
@@ -2632,7 +2647,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Send tcp.InitialCwnd number of segments to fill up
// InitialWindow but don't ACK. That should prevent
@@ -2657,6 +2672,7 @@
}
// Check that we get tcp.InitialCwnd packets.
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for i := 0; i < tcp.InitialCwnd; i++ {
b := c.GetPacket()
checker.IPv4(t, b,
@@ -2664,7 +2680,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+uint32(i)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2675,7 +2691,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1 + 10), // 10 for the 10 bytes of payload.
RcvWnd: 30000,
})
@@ -2687,7 +2703,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+11),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2701,7 +2717,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(11 + seqnum.Size(len(allData))),
RcvWnd: 30000,
})
@@ -2713,7 +2729,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
c.EP.SocketOptions().SetDelayOption(true)
@@ -2728,6 +2744,7 @@
}
seq := c.IRS.Add(1)
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for _, want := range [][]byte{allData[:1], allData[1:]} {
// Check that data is received.
b := c.GetPacket()
@@ -2736,7 +2753,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(seq)),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2751,7 +2768,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seq,
RcvWnd: 30000,
})
@@ -2762,7 +2779,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
c.EP.SocketOptions().SetDelayOption(true)
@@ -2776,7 +2793,7 @@
}
seq := c.IRS.Add(1)
-
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
// Check that data is received.
first := c.GetPacket()
checker.IPv4(t, first,
@@ -2784,7 +2801,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(seq)),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2807,7 +2824,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(seq)),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2823,7 +2840,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seq,
RcvWnd: 30000,
})
@@ -2845,7 +2862,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnectedWithRawOptions(789, 30000, -1 /* epRcvBuf */, []byte{
+ c.CreateConnectedWithRawOptions(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */, []byte{
header.TCPOptionMSS, 4, byte(maxPayload / 256), byte(maxPayload % 256),
})
@@ -2861,7 +2878,7 @@
}
seq := c.IRS.Add(1)
-
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for i, data := range allData {
// Check that data is received.
packet := c.GetPacket()
@@ -2870,7 +2887,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(seq)),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2887,7 +2904,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seq,
RcvWnd: 30000,
})
@@ -2912,6 +2929,7 @@
// Check that data is received in chunks.
bytesReceived := 0
numPackets := 0
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for bytesReceived != dataLen {
b := c.GetPacket()
numPackets++
@@ -2921,7 +2939,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1+uint32(bytesReceived)),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -2945,7 +2963,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1 + seqnum.Size(bytesReceived)),
RcvWnd: 30000,
TCPOpts: options,
@@ -2961,7 +2979,7 @@
c := context.New(t, uint32(header.TCPMinimumSize+header.IPv4MinimumSize+maxPayload))
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
testBrokenUpWrite(t, c, maxPayload)
}
@@ -3001,7 +3019,7 @@
c := context.New(t, 65535)
defer c.Cleanup()
- c.CreateConnectedWithRawOptions(789, 30000, -1 /* epRcvBuf */, []byte{
+ c.CreateConnectedWithRawOptions(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */, []byte{
header.TCPOptionMSS, 4, byte(maxPayload / 256), byte(maxPayload % 256),
})
testBrokenUpWrite(t, c, maxPayload)
@@ -3210,7 +3228,7 @@
)
// Send SYN-ACK.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: tcpHdr.DestinationPort(),
DstPort: tcpHdr.SourcePort(),
@@ -3272,14 +3290,15 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
// Send RST segment.
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagRst,
- SeqNum: 790,
+ SeqNum: iss,
RcvWnd: 30000,
})
@@ -3328,14 +3347,15 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Send RST segment.
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagRst,
- SeqNum: 790,
+ SeqNum: iss,
RcvWnd: 30000,
})
@@ -3363,7 +3383,7 @@
t.Fatalf("SetTransportProtocolOption(%d, &%T(%d)): %s", tcp.ProtocolNumber, opt, opt, err)
}
- c.CreateConnected(789 /* iss */, 30000 /* rcvWnd */, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000 /* rcvWnd */, -1 /* epRcvBuf */)
waitEntry, notifyCh := waiter.NewChannelEntry(nil)
c.WQ.EventRegister(&waitEntry, waiter.EventHUp)
@@ -3426,7 +3446,7 @@
t.Fatalf("SetTransportProtocolOption(%d, &%T(%d)): %s", tcp.ProtocolNumber, opt, opt, err)
}
- c.CreateConnected(789 /* iss */, 30000 /* rcvWnd */, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000 /* rcvWnd */, -1 /* epRcvBuf */)
var r bytes.Reader
r.Reset(make([]byte, 1))
@@ -3469,7 +3489,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789 /* iss */, 30000 /* rcvWnd */, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000 /* rcvWnd */, -1 /* epRcvBuf */)
// Disabling PMTU discovery causes all packets sent from this socket to
// have DF=0. This needs to be done because the IPv4 ID uniqueness
@@ -3518,19 +3538,20 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Shutdown immediately, check that we get a FIN.
if err := c.EP.Shutdown(tcpip.ShutdownWrite); err != nil {
t.Fatalf("Shutdown failed: %s", err)
}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.PayloadLen(header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -3540,7 +3561,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -3551,7 +3572,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+2),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -3561,19 +3582,20 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Shutdown immediately, check that we get a FIN.
if err := c.EP.Shutdown(tcpip.ShutdownWrite); err != nil {
t.Fatalf("Shutdown failed: %s", err)
}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.PayloadLen(header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -3584,7 +3606,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -3594,7 +3616,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -3605,7 +3627,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+2),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -3615,7 +3637,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Write something out, and have it acknowledged.
view := make([]byte, 10)
@@ -3626,12 +3648,13 @@
}
next := uint32(c.IRS) + 1
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.PayloadLen(len(view)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -3641,7 +3664,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -3656,7 +3679,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -3667,7 +3690,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -3678,7 +3701,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -3688,7 +3711,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Write enough segments to fill the congestion window before ACK'ing
// any of them.
@@ -3702,13 +3725,14 @@
}
next := uint32(c.IRS) + 1
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for i := tcp.InitialCwnd; i > 0; i-- {
checker.IPv4(t, c.GetPacket(),
checker.PayloadLen(len(view)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -3727,7 +3751,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -3737,7 +3761,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -3747,7 +3771,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -3758,7 +3782,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -3768,7 +3792,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -3778,7 +3802,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Write something out, and acknowledge it to get cwnd to 2.
view := make([]byte, 10)
@@ -3789,12 +3813,13 @@
}
next := uint32(c.IRS) + 1
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.PayloadLen(len(view)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -3804,7 +3829,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -3820,7 +3845,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -3836,7 +3861,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -3847,7 +3872,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -3857,7 +3882,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -3867,7 +3892,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Write something out, and acknowledge it to get cwnd to 2. Also send
// FIN from the test side.
@@ -3879,12 +3904,13 @@
}
next := uint32(c.IRS) + 1
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.PayloadLen(len(view)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -3894,7 +3920,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -3905,7 +3931,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -3921,7 +3947,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -3937,7 +3963,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(791),
+ checker.TCPAckNum(uint32(iss)+1),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -3948,7 +3974,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 791,
+ SeqNum: iss.Add(1),
AckNum: seqnum.Value(next - 1),
RcvWnd: 30000,
})
@@ -3961,7 +3987,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 791,
+ SeqNum: iss.Add(1),
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -4002,17 +4028,18 @@
defer c.Cleanup()
maxPayload := defaultMTU - header.IPv4MinimumSize - header.TCPMinimumSize
- c.CreateConnectedWithRawOptions(789, 0, -1 /* epRcvBuf */, []byte{
+ c.CreateConnectedWithRawOptions(context.TestInitialSequenceNumber, 0, -1 /* epRcvBuf */, []byte{
header.TCPOptionMSS, 4, byte(maxPayload / 256), byte(maxPayload % 256),
header.TCPOptionWS, 3, scale, header.TCPOptionNOP,
})
// Open up the window with a scaled value.
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 1,
})
@@ -4031,7 +4058,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -4041,7 +4068,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagRst,
- SeqNum: 790,
+ SeqNum: iss,
})
}
@@ -4054,15 +4081,16 @@
func TestReceivedValidSegmentCountIncrement(t *testing.T) {
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
stats := c.Stack().Stats()
want := stats.TCP.ValidSegmentsReceived.Value() + 1
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790),
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -4083,14 +4111,15 @@
func TestReceivedInvalidSegmentCountIncrement(t *testing.T) {
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
stats := c.Stack().Stats()
want := stats.TCP.InvalidSegmentsReceived.Value() + 1
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
vv := c.BuildSegment(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790),
+ SeqNum: seqnum.Value(iss),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -4110,14 +4139,15 @@
func TestReceivedIncorrectChecksumIncrement(t *testing.T) {
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
stats := c.Stack().Stats()
want := stats.TCP.ChecksumErrors.Value() + 1
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
vv := c.BuildSegment([]byte{0x1, 0x2, 0x3}, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790),
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -4144,23 +4174,24 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
// Send 200 segments.
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
data := []byte{1, 2, 3}
for i := 0; i < 200; i++ {
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790 + i*len(data)),
+ SeqNum: iss.Add(seqnum.Size(i * len(data))),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
}
// Receive ACKs for all segments.
- last := seqnum.Value(790 + 200*len(data))
+ last := iss.Add(seqnum.Size(200 * len(data)))
for {
b := c.GetPacket()
checker.IPv4(t, b,
@@ -4198,7 +4229,7 @@
t.Fatalf("SetTransportProtocolOption(%d, &%T(%d)): %s", tcp.ProtocolNumber, opt, opt, err)
}
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
we, ch := waiter.NewChannelEntry(nil)
c.WQ.EventRegister(&we, waiter.EventIn)
@@ -4212,12 +4243,13 @@
t.Fatalf("Shutdown failed: %s", err)
}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.PayloadLen(header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagFin),
),
)
@@ -4232,7 +4264,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck | header.TCPFlagFin,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(2),
RcvWnd: 30000,
})
@@ -4242,7 +4274,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+2),
- checker.TCPAckNum(uint32(791+len(data))),
+ checker.TCPAckNum(uint32(iss)+uint32(len(data))+1),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -4815,7 +4847,7 @@
// Create new connection with MSS of 1460.
const maxPayload = 1500 - header.TCPMinimumSize - header.IPv4MinimumSize
- c.CreateConnectedWithRawOptions(789, 30000, -1 /* epRcvBuf */, []byte{
+ c.CreateConnectedWithRawOptions(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */, []byte{
header.TCPOptionMSS, 4, byte(maxPayload / 256), byte(maxPayload % 256),
})
@@ -4833,6 +4865,7 @@
receivePackets := func(c *context.Context, sizes []int, which int, seqNum uint32) []byte {
var ret []byte
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for i, size := range sizes {
p := c.GetPacket()
if i == which {
@@ -4843,7 +4876,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(seqNum),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -4893,14 +4926,15 @@
invoked <- struct{}{}
})
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
data := []byte{1, 2, 3}
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -5027,7 +5061,7 @@
}
if connected {
- c.Connect(789 /* iss */, 32768 /* rcvWnd */, nil)
+ c.Connect(context.TestInitialSequenceNumber, 32768 /* rcvWnd */, nil)
}
if err := c.EP.SetSockOpt(&tc.cc); err != tc.err {
@@ -5067,7 +5101,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
const keepAliveIdle = 100 * time.Millisecond
const keepAliveInterval = 3 * time.Second
@@ -5087,13 +5121,14 @@
// 5 unacked keepalives are sent. ACK each one, and check that the
// connection stays alive after 5.
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for i := 0; i < 10; i++ {
b := c.GetPacket()
checker.IPv4(t, b,
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)),
- checker.TCPAckNum(uint32(790)),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -5103,7 +5138,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: c.IRS,
RcvWnd: 30000,
})
@@ -5128,7 +5163,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -5140,7 +5175,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck|header.TCPFlagPsh),
),
)
@@ -5153,7 +5188,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -5166,7 +5201,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(next-1)),
- checker.TCPAckNum(uint32(790)),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -5184,7 +5219,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -5215,7 +5250,7 @@
func executeHandshake(t *testing.T, c *context.Context, srcPort uint16, synCookieInUse bool) (irs, iss seqnum.Value) {
t.Helper()
// Send a SYN request.
- irs = seqnum.Value(789)
+ irs = seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: srcPort,
DstPort: context.StackPort,
@@ -5260,7 +5295,7 @@
func executeV6Handshake(t *testing.T, c *context.Context, srcPort uint16, synCookieInUse bool) (irs, iss seqnum.Value) {
t.Helper()
// Send a SYN request.
- irs = seqnum.Value(789)
+ irs = seqnum.Value(context.TestInitialSequenceNumber)
c.SendV6Packet(nil, &context.Headers{
SrcPort: srcPort,
DstPort: context.StackPort,
@@ -5340,7 +5375,7 @@
SrcPort: context.TestPort + uint16(lastPortOffset),
DstPort: context.StackPort,
Flags: header.TCPFlagSyn,
- SeqNum: seqnum.Value(789),
+ SeqNum: seqnum.Value(context.TestInitialSequenceNumber),
RcvWnd: 30000,
})
c.CheckNoPacketTimeout("unexpected packet received", 50*time.Millisecond)
@@ -5491,7 +5526,7 @@
t.Fatalf("Listen failed: %s", err)
}
- irs := seqnum.Value(789)
+ irs := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacketWithAddrs(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -5591,7 +5626,7 @@
t.Fatalf("Listen failed: %s", err)
}
- irs := seqnum.Value(789)
+ irs := seqnum.Value(context.TestInitialSequenceNumber)
c.SendV6PacketWithAddrs(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -5645,7 +5680,7 @@
// Send two SYN's the first one should get a SYN-ACK, the
// second one should not get any response and is dropped as
// the synRcvd count will be equal to backlog.
- irs := seqnum.Value(789)
+ irs := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -5758,7 +5793,7 @@
time.Sleep(50 * time.Millisecond)
// Send a SYN request.
- irs := seqnum.Value(789)
+ irs := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
// pick a different src port for new SYN.
SrcPort: context.TestPort + 1,
@@ -5824,7 +5859,7 @@
// Send the same SYN packet multiple times. We should still get a valid SYN-ACK
// reply.
- irs := seqnum.Value(789)
+ irs := seqnum.Value(context.TestInitialSequenceNumber)
for i := 0; i < 5; i++ {
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
@@ -5867,7 +5902,7 @@
}
// Send a SYN to get a SYN-ACK. This should put the ep into SYN-RCVD state
- irs := seqnum.Value(789)
+ irs := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -6051,7 +6086,7 @@
SrcPort: srcPort + 2,
DstPort: context.StackPort,
Flags: header.TCPFlagSyn,
- SeqNum: seqnum.Value(789),
+ SeqNum: seqnum.Value(context.TestInitialSequenceNumber),
RcvWnd: 30000,
})
@@ -6501,7 +6536,7 @@
c := context.New(t, 1500 /* mtu */)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
testCases := []struct {
name string
@@ -6552,7 +6587,7 @@
}
// Send a SYN request.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -6671,7 +6706,7 @@
}
// Send a SYN request.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -6778,7 +6813,7 @@
}
// Send a SYN request.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -6852,7 +6887,7 @@
// Send a SYN request w/ sequence number lower than
// the highest sequence number sent. We just reuse
// the same number.
- iss = seqnum.Value(789)
+ iss = seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -6872,7 +6907,7 @@
// Send a SYN request w/ sequence number higher than
// the highest sequence number sent.
- iss = seqnum.Value(792)
+ iss = iss.Add(3)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -6942,7 +6977,7 @@
}
// Send a SYN request.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -7091,7 +7126,7 @@
}
// Send a SYN request.
- iss := seqnum.Value(789)
+ iss := seqnum.Value(context.TestInitialSequenceNumber)
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: context.StackPort,
@@ -7242,7 +7277,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
waitEntry, notifyCh := waiter.NewChannelEntry(nil)
c.WQ.EventRegister(&waitEntry, waiter.EventHUp)
@@ -7268,12 +7303,13 @@
}
next := uint32(c.IRS) + 1
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, c.GetPacket(),
checker.PayloadLen(len(view)+header.TCPMinimumSize),
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(next),
- checker.TCPAckNum(790),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlagsMatch(header.TCPFlagAck, ^header.TCPFlagPsh),
),
)
@@ -7299,7 +7335,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(next),
RcvWnd: 30000,
})
@@ -7328,7 +7364,7 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- c.CreateConnected(789, 30000, -1 /* epRcvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRcvBuf */)
origEstablishedTimedout := c.Stack().Stats().TCP.EstablishedTimedout.Value()
@@ -7362,11 +7398,12 @@
// Now receive 1 keepalives, but don't ACK it.
b := c.GetPacket()
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
checker.IPv4(t, b,
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)),
- checker.TCPAckNum(uint32(790)),
+ checker.TCPAckNum(uint32(iss)),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -7383,7 +7420,7 @@
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: 790,
+ SeqNum: iss,
AckNum: seqnum.Value(c.IRS + 1),
RcvWnd: 30000,
})
@@ -7413,20 +7450,20 @@
defer c.Cleanup()
const rcvBuf = 65535 * 10
- c.CreateConnected(789, 30000, rcvBuf)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, rcvBuf)
// Write chunks of ~30000 bytes. It's important that two
// payloads make it equal or longer than MSS.
remain := rcvBuf * 2
sent := 0
data := make([]byte, defaultMTU/2)
-
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for remain > len(data) {
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790 + sent),
+ SeqNum: iss.Add(seqnum.Size(sent)),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -7438,7 +7475,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+sent)),
+ checker.TCPAckNum(uint32(iss)+uint32(sent)),
checker.TCPFlags(header.TCPFlagAck),
),
)
@@ -7469,7 +7506,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+sent)),
+ checker.TCPAckNum(uint32(iss)+uint32(sent)),
checker.TCPWindow(uint16(0xffff)),
checker.TCPFlags(header.TCPFlagAck),
),
@@ -7483,20 +7520,20 @@
defer c.Cleanup()
const rcvBuf = 65535 * 10
- c.CreateConnected(789, 30000, rcvBuf)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, rcvBuf)
// Write chunks of ~30000 bytes. It's important that two
// payloads make it equal or longer than MSS.
remain := rcvBuf
sent := 0
data := make([]byte, defaultMTU/2)
-
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
for remain > len(data) {
c.SendPacket(data, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: seqnum.Value(790 + sent),
+ SeqNum: iss.Add(seqnum.Size(sent)),
AckNum: c.IRS.Add(1),
RcvWnd: 30000,
})
@@ -7507,7 +7544,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+sent)),
+ checker.TCPAckNum(uint32(iss)+uint32(sent)),
checker.TCPWindowLessThanEq(0xffff),
checker.TCPFlags(header.TCPFlagAck),
),
@@ -7523,7 +7560,7 @@
checker.TCP(
checker.DstPort(context.TestPort),
checker.TCPSeqNum(uint32(c.IRS)+1),
- checker.TCPAckNum(uint32(790+sent)),
+ checker.TCPAckNum(uint32(iss)+uint32(sent)),
checker.TCPWindow(uint16(0xffff)),
checker.TCPFlags(header.TCPFlagAck),
),
@@ -7664,16 +7701,16 @@
c := context.New(t, defaultMTU)
defer c.Cleanup()
- iss := seqnum.Value(789)
- c.CreateConnected(iss, 30000, -1 /* epRecvBuf */)
+ c.CreateConnected(context.TestInitialSequenceNumber, 30000, -1 /* epRecvBuf */)
// Send some data to make sure there is some unread
// data to trigger a reset on c.Close.
irs := c.IRS
+ iss := seqnum.Value(context.TestInitialSequenceNumber).Add(1)
c.SendPacket([]byte{1, 2, 3, 4}, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
Flags: header.TCPFlagAck,
- SeqNum: iss.Add(1),
+ SeqNum: iss,
AckNum: irs.Add(1),
RcvWnd: 30000,
})
@@ -7683,7 +7720,7 @@
checker.DstPort(context.TestPort),
checker.TCPFlags(header.TCPFlagAck),
checker.TCPSeqNum(uint32(irs.Add(1))),
- checker.TCPAckNum(uint32(iss.Add(5)))))
+ checker.TCPAckNum(uint32(iss)+4)))
// Close in a separate goroutine so that we can trigger
// a race with the RST we send below. This should not
@@ -7698,7 +7735,7 @@
c.SendPacket(nil, &context.Headers{
SrcPort: context.TestPort,
DstPort: c.Port,
- SeqNum: iss.Add(5),
+ SeqNum: iss.Add(4),
AckNum: c.IRS.Add(5),
RcvWnd: 30000,
Flags: header.TCPFlagRst,
