53 lines
2.0 KiB
Go
53 lines
2.0 KiB
Go
// Copyright 2020 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tcp_syn_reset_test
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import (
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"flag"
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"testing"
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"time"
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"golang.org/x/sys/unix"
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"gvisor.dev/gvisor/pkg/tcpip/header"
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"gvisor.dev/gvisor/test/packetimpact/testbench"
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)
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func init() {
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testbench.RegisterFlags(flag.CommandLine)
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}
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// TestTCPSynRcvdReset tests transition from SYN-RCVD to CLOSED.
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func TestTCPSynRcvdReset(t *testing.T) {
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dut := testbench.NewDUT(t)
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defer dut.TearDown()
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listenFD, remotePort := dut.CreateListener(t, unix.SOCK_STREAM, unix.IPPROTO_TCP, 1)
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defer dut.Close(t, listenFD)
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conn := testbench.NewTCPIPv4(t, testbench.TCP{DstPort: &remotePort}, testbench.TCP{SrcPort: &remotePort})
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defer conn.Close(t)
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// Expect dut connection to have transitioned to SYN-RCVD state.
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conn.Send(t, testbench.TCP{Flags: testbench.Uint8(header.TCPFlagSyn)})
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if _, err := conn.ExpectData(t, &testbench.TCP{Flags: testbench.Uint8(header.TCPFlagSyn | header.TCPFlagAck)}, nil, time.Second); err != nil {
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t.Fatalf("expected SYN-ACK %s", err)
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}
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conn.Send(t, testbench.TCP{Flags: testbench.Uint8(header.TCPFlagRst)})
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// Expect the connection to have transitioned SYN-RCVD to CLOSED.
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// TODO(gvisor.dev/issue/478): Check for TCP_INFO on the dut side.
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conn.Send(t, testbench.TCP{Flags: testbench.Uint8(header.TCPFlagAck)})
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if _, err := conn.ExpectData(t, &testbench.TCP{Flags: testbench.Uint8(header.TCPFlagRst)}, nil, time.Second); err != nil {
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t.Fatalf("expected a TCP RST %s", err)
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}
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}
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