1 files changed, 0 insertions, 94 deletions
diff --git a/test/packetimpact/tests/tcp_retransmits_test.go b/test/packetimpact/tests/tcp_retransmits_test.go
deleted file mode 100644
index d3fb789f4..000000000
--- a/test/packetimpact/tests/tcp_retransmits_test.go
+++ /dev/null
@@ -1,94 +0,0 @@
-// Copyright 2020 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package tcp_retransmits_test
-
-import (
-	"bytes"
-	"flag"
-	"testing"
-	"time"
-
-	"golang.org/x/sys/unix"
-	"gvisor.dev/gvisor/pkg/tcpip/header"
-	"gvisor.dev/gvisor/test/packetimpact/testbench"
-)
-
-func init() {
-	testbench.Initialize(flag.CommandLine)
-}
-
-func getRTO(t *testing.T, dut testbench.DUT, acceptFd int32) (rto time.Duration) {
-	info := dut.GetSockOptTCPInfo(t, acceptFd)
-	return time.Duration(info.RTO) * time.Microsecond
-}
-
-// TestRetransmits tests retransmits occur at exponentially increasing
-// time intervals.
-func TestRetransmits(t *testing.T) {
-	dut := testbench.NewDUT(t)
-	listenFd, remotePort := dut.CreateListener(t, unix.SOCK_STREAM, unix.IPPROTO_TCP, 1)
-	defer dut.Close(t, listenFd)
-	conn := dut.Net.NewTCPIPv4(t, testbench.TCP{DstPort: &remotePort}, testbench.TCP{SrcPort: &remotePort})
-	defer conn.Close(t)
-
-	conn.Connect(t)
-	acceptFd, _ := dut.Accept(t, listenFd)
-	defer dut.Close(t, acceptFd)
-
-	dut.SetSockOptInt(t, acceptFd, unix.IPPROTO_TCP, unix.TCP_NODELAY, 1)
-
-	sampleData := []byte("Sample Data")
-	samplePayload := &testbench.Payload{Bytes: sampleData}
-
-	// Give a chance for the dut to estimate RTO with RTT from the DATA-ACK.
-	// This is to reduce the test run-time from the default initial RTO of 1s.
-	// TODO(gvisor.dev/issue/2685) Estimate RTO during handshake, after which
-	// we can skip this data send/recv which is solely to estimate RTO.
-	dut.Send(t, acceptFd, sampleData, 0)
-	if _, err := conn.ExpectData(t, &testbench.TCP{}, samplePayload, time.Second); err != nil {
-		t.Fatalf("expected payload was not received: %s", err)
-	}
-	conn.Send(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagAck | header.TCPFlagPsh)}, samplePayload)
-	if _, err := conn.ExpectData(t, &testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagAck)}, nil, time.Second); err != nil {
-		t.Fatalf("expected packet was not received: %s", err)
-	}
-	// Wait for the DUT to receive the data, thus ensuring that the stack has
-	// estimated RTO before we query RTO via TCP_INFO.
-	if got := dut.Recv(t, acceptFd, int32(len(sampleData)), 0); !bytes.Equal(got, sampleData) {
-		t.Fatalf("got dut.Recv(t, %d, %d, 0) = %s, want %s", acceptFd, len(sampleData), got, sampleData)
-	}
-
-	const timeoutCorrection = time.Second
-	const diffCorrection = 200 * time.Millisecond
-	rto := getRTO(t, dut, acceptFd)
-
-	dut.Send(t, acceptFd, sampleData, 0)
-	seq := testbench.Uint32(uint32(*conn.RemoteSeqNum(t)))
-	if _, err := conn.ExpectData(t, &testbench.TCP{SeqNum: seq}, samplePayload, rto+timeoutCorrection); err != nil {
-		t.Fatalf("expected payload was not received: %s", err)
-	}
-
-	// Expect retransmits of the same segment.
-	for i := 0; i < 5; i++ {
-		startTime := time.Now()
-		rto = getRTO(t, dut, acceptFd)
-		if _, err := conn.ExpectData(t, &testbench.TCP{SeqNum: seq}, samplePayload, rto+timeoutCorrection); err != nil {
-			t.Fatalf("expected payload was not received within %s loop %d err %s", rto+timeoutCorrection, i, err)
-		}
-		if diff := time.Since(startTime); diff+diffCorrection < rto {
-			t.Fatalf("retransmit came sooner got: %s want: >= %s probe %d", diff+diffCorrection, rto, i)
-		}
-	}
-}