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rewrite ControlBlock.Open to only open passive connections; now use Send for active connections

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soypat
2025-02-13 22:56:27 -03:00
parent 0cb43c47a4
commit bbd74d04d8
6 changed files with 88 additions and 29 deletions
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tcp/tcp_test.go
+13 -7
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@@ -316,22 +316,28 @@ func TestExchange_rfc9293_figure13(t *testing.T) {
func TestExchange_noDupAckDuringEstablished(t *testing.T) {
var tcbA tcp.ControlBlock
const issA, issB, windowA, windowB = 300, 334222749, 256, 64240
err := tcbA.Open(issA, issA, tcp.StateSynSent)
synseg := tcp.ClientSynSegment(issA, windowA)
// err := tcbA.Open(issA, issA, tcp.StateSynSent)
tcbA.SetRecvWindow(windowA)
if err != nil {
t.Fatal(err)
}
// if err != nil {
// t.Fatal(err)
// }
establishA := []tcp.Exchange{
0: { // B sends SYN to A.
0: { // A sends SYN to B.
Outgoing: &synseg,
WantState: tcp.StateSynSent,
},
1: { // B sends SYN to A.
Incoming: &tcp.Segment{SEQ: issB, ACK: 0, WND: windowB, Flags: tcp.FlagSYN},
WantPending: &tcp.Segment{SEQ: issA, ACK: issB + 1, WND: windowA, Flags: SYNACK},
WantState: tcp.StateSynRcvd,
},
1: { // Send SYNACK to B.
2: { // Send SYNACK to B.
Outgoing: &tcp.Segment{SEQ: issA, ACK: issB + 1, WND: windowA, Flags: SYNACK},
WantState: tcp.StateSynRcvd,
},
2: { // B ACKs SYNACK, thus establishing the connection on both sides.
3: { // B ACKs SYNACK, thus establishing the connection on both sides.
Incoming: &tcp.Segment{SEQ: issB + 1, ACK: issA + 1, WND: windowB, Flags: tcp.FlagACK},
WantState: tcp.StateEstablished,
},