add windows support

vendor/github.com/google/gopacket/.gitignore

@@ -1,38 +0,0 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe
-#*
-*~
-
-# examples binaries
-examples/synscan/synscan
-examples/pfdump/pfdump
-examples/pcapdump/pcapdump
-examples/httpassembly/httpassembly
-examples/statsassembly/statsassembly
-examples/arpscan/arpscan
-examples/bidirectional/bidirectional
-examples/bytediff/bytediff
-examples/reassemblydump/reassemblydump
-layers/gen
-macs/gen
-pcap/pcap_tester

vendor/github.com/google/gopacket/.travis.gofmt.sh

@@ -1,7 +0,0 @@
-#!/bin/bash
-
-cd "$(dirname $0)"
-if [ -n "$(go fmt ./...)" ]; then
-  echo "Go code is not formatted, run 'go fmt github.com/google/stenographer/...'" >&2
-  exit 1
-fi

vendor/github.com/google/gopacket/.travis.golint.sh

@@ -1,28 +0,0 @@
-#!/bin/bash
-
-cd "$(dirname $0)"
-
-go get golang.org/x/lint/golint
-DIRS=". tcpassembly tcpassembly/tcpreader ip4defrag reassembly macs pcapgo pcap afpacket pfring routing defrag/lcmdefrag"
-# Add subdirectories here as we clean up golint on each.
-for subdir in $DIRS; do
-  pushd $subdir
-  if golint |
-      grep -v CannotSetRFMon |  # pcap exported error name
-      grep -v DataLost |        # tcpassembly/tcpreader exported error name
-      grep .; then
-    exit 1
-  fi
-  popd
-done
-
-pushd layers
-for file in *.go; do
-  if cat .lint_blacklist | grep -q $file; then
-    echo "Skipping lint of $file due to .lint_blacklist"
-  elif golint $file | grep .; then
-    echo "Lint error in file $file"
-    exit 1
-  fi
-done
-popd

vendor/github.com/google/gopacket/.travis.govet.sh

@@ -1,10 +0,0 @@
-#!/bin/bash
-
-cd "$(dirname $0)"
-DIRS=". layers pcap pcapgo tcpassembly tcpassembly/tcpreader routing ip4defrag bytediff macs defrag/lcmdefrag"
-set -e
-for subdir in $DIRS; do
-  pushd $subdir
-  go vet
-  popd
-done

vendor/github.com/google/gopacket/.travis.install.sh

@@ -1,9 +0,0 @@
-#!/bin/bash
-
-set -ev
-
-go get github.com/google/gopacket
-go get github.com/google/gopacket/layers
-go get github.com/google/gopacket/tcpassembly
-go get github.com/google/gopacket/reassembly
-go get github.com/google/gopacket/pcapgo

vendor/github.com/google/gopacket/.travis.script.sh

@@ -1,10 +0,0 @@
-#!/bin/bash
-
-set -ev
-
-go test github.com/google/gopacket
-go test github.com/google/gopacket/layers
-go test github.com/google/gopacket/tcpassembly
-go test github.com/google/gopacket/reassembly
-go test github.com/google/gopacket/pcapgo 
-go test github.com/google/gopacket/pcap

vendor/github.com/google/gopacket/.travis.yml

@@ -1,55 +0,0 @@
-language: go
-go:
- - 1.11.x
- - 1.12.x
- - master
-
-addons:
-  apt:
-    packages:
-      libpcap-dev
-
-# use modules except for older versions (see below)
-install: true
-
-env:
-  - GO111MODULE=on
-
-script: ./.travis.script.sh
-
-matrix:
-  fast_finish: true
-  allow_failures:
-    - go: master
-
-jobs:
-  include:
-    - go: 1.5.x
-      install: ./.travis.install.sh
-    - go: 1.6.x
-      install: ./.travis.install.sh
-    - go: 1.7.x
-      install: ./.travis.install.sh
-    - go: 1.8.x
-      install: ./.travis.install.sh
-    - go: 1.9.x
-      install: ./.travis.install.sh
-    - go: 1.10.x
-      install: ./.travis.install.sh
-    - os: osx
-      go: 1.x
-    - os: windows
-      go: 1.x
-      # winpcap does not work on travis ci - so install nmap to get libpcap
-      before_install: choco install nmap
-    - stage: style
-      name: "fmt/vet/lint"
-      go: 1.x
-      script:
-        - ./.travis.gofmt.sh
-        - ./.travis.govet.sh
-        - ./.travis.golint.sh
-
-stages:
-  - style
-  - test

vendor/github.com/google/gopacket/AUTHORS

@@ -33,6 +33,7 @@ Jesse Ward <jesse@jesseward.com>
 Kane Mathers <kane@kanemathers.name>
 Jose Selvi <jselvi@pentester.es>
 Yerden Zhumabekov <yerden.zhumabekov@gmail.com>
+Jensen Hwa <jensenhwa@gmail.com>
 
 -----------------------------------------------
 FORKED FROM github.com/akrennmair/gopcap

vendor/github.com/google/gopacket/README.md

@@ -6,7 +6,7 @@ See [godoc](https://godoc.org/github.com/google/gopacket) for more details.
 [![Build Status](https://travis-ci.org/google/gopacket.svg?branch=master)](https://travis-ci.org/google/gopacket)
 [![GoDoc](https://godoc.org/github.com/google/gopacket?status.svg)](https://godoc.org/github.com/google/gopacket)
 
-Minimum Go version required is 1.5 except for pcapgo/EthernetHandle, afpacket, and bsdbpf which need at least 1.7 due to x/sys/unix dependencies.
+Minimum Go version required is 1.5 except for pcapgo/EthernetHandle, afpacket, and bsdbpf which need at least 1.9 due to x/sys/unix dependencies.
 
 Originally forked from the gopcap project written by Andreas
 Krennmair <ak@synflood.at> (http://github.com/akrennmair/gopcap).

vendor/github.com/google/gopacket/benchmark_test.go

@@ -0,0 +1,194 @@
+// Copyright 2012, Google, Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree.
+
+package gopacket
+
+import (
+	"runtime"
+	"testing"
+)
+
+// A few benchmarks for figuring out exactly how fast some underlying Go
+// things are.
+
+type testError struct{}
+
+func (t *testError) Error() string { return "abc" }
+
+func BenchmarkTypeAssertion(b *testing.B) {
+	var e error = &testError{}
+	for i := 0; i < b.N; i++ {
+		_, _ = e.(*testError)
+	}
+}
+
+func BenchmarkMapLookup(b *testing.B) {
+	m := map[LayerType]bool{
+		LayerTypePayload: true,
+	}
+	for i := 0; i < b.N; i++ {
+		_ = m[LayerTypePayload]
+	}
+}
+
+func BenchmarkNilMapLookup(b *testing.B) {
+	var m map[LayerType]bool
+	for i := 0; i < b.N; i++ {
+		_ = m[LayerTypePayload]
+	}
+}
+
+func BenchmarkNilMapLookupWithNilCheck(b *testing.B) {
+	var m map[LayerType]bool
+	for i := 0; i < b.N; i++ {
+		if m != nil {
+			_ = m[LayerTypePayload]
+		}
+	}
+}
+
+func BenchmarkArrayLookup(b *testing.B) {
+	m := make([]bool, 100)
+	for i := 0; i < b.N; i++ {
+		_ = m[LayerTypePayload]
+	}
+}
+
+var testError1 = &testError{}
+var testError2 error = testError1
+
+func BenchmarkTypeToInterface1(b *testing.B) {
+	var e error
+	for i := 0; i < b.N; i++ {
+		e = testError1
+	}
+	// Have to do someting with 'e' or the compiler complains about an unused
+	// variable.
+	testError2 = e
+}
+func BenchmarkTypeToInterface2(b *testing.B) {
+	var e error
+	for i := 0; i < b.N; i++ {
+		e = testError2
+	}
+	// Have to do someting with 'e' or the compiler complains about an unused
+	// variable.
+	testError2 = e
+}
+
+var decodeOpts DecodeOptions
+
+func decodeOptsByValue(_ DecodeOptions)    {}
+func decodeOptsByPointer(_ *DecodeOptions) {}
+func BenchmarkPassDecodeOptionsByValue(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		decodeOptsByValue(decodeOpts)
+	}
+}
+func BenchmarkPassDecodeOptionsByPointer(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		decodeOptsByPointer(&decodeOpts)
+	}
+}
+
+func BenchmarkLockOSThread(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		runtime.LockOSThread()
+	}
+}
+func BenchmarkUnlockOSThread(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		runtime.UnlockOSThread()
+	}
+}
+func lockUnlock() {
+	runtime.LockOSThread()
+	runtime.UnlockOSThread()
+}
+func lockDeferUnlock() {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+}
+func BenchmarkLockUnlockOSThread(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		lockUnlock()
+	}
+}
+func BenchmarkLockDeferUnlockOSThread(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		lockDeferUnlock()
+	}
+}
+
+func BenchmarkUnbufferedChannel(b *testing.B) {
+	ca := make(chan bool)
+	cb := make(chan bool)
+	defer close(ca)
+	go func() {
+		defer close(cb)
+		for range ca {
+			cb <- true
+		}
+	}()
+	for i := 0; i < b.N; i++ {
+		ca <- true
+		<-cb
+	}
+}
+func BenchmarkSmallBufferedChannel(b *testing.B) {
+	ca := make(chan bool, 1)
+	cb := make(chan bool, 1)
+	defer close(ca)
+	go func() {
+		defer close(cb)
+		for range ca {
+			cb <- true
+		}
+	}()
+	for i := 0; i < b.N; i++ {
+		ca <- true
+		<-cb
+	}
+}
+func BenchmarkLargeBufferedChannel(b *testing.B) {
+	ca := make(chan bool, 1000)
+	cb := make(chan bool, 1000)
+	defer close(ca)
+	go func() {
+		defer close(cb)
+		for range ca {
+			cb <- true
+		}
+	}()
+	for i := 0; i < b.N; i++ {
+		ca <- true
+		<-cb
+	}
+}
+func BenchmarkEndpointFastHashShort(b *testing.B) {
+	e := Endpoint{typ: 1, len: 2}
+	for i := 0; i < b.N; i++ {
+		e.FastHash()
+	}
+}
+func BenchmarkEndpointFastHashLong(b *testing.B) {
+	e := Endpoint{typ: 1, len: 16}
+	for i := 0; i < b.N; i++ {
+		e.FastHash()
+	}
+}
+func BenchmarkFlowFastHashShort(b *testing.B) {
+	e := Flow{typ: 1, slen: 2, dlen: 2}
+	for i := 0; i < b.N; i++ {
+		e.FastHash()
+	}
+}
+func BenchmarkFlowFastHashLong(b *testing.B) {
+	e := Flow{typ: 1, slen: 16, dlen: 16}
+	for i := 0; i < b.N; i++ {
+		e.FastHash()
+	}
+}

vendor/github.com/google/gopacket/doc.go

@@ -208,7 +208,7 @@ based on endpoint criteria:
    }
  }
  // Find all packets coming from UDP port 1000 to UDP port 500
- interestingFlow := gopacket.NewFlow(layers.NewUDPPortEndpoint(1000), layers.NewUDPPortEndpoint(500))
+ interestingFlow := gopacket.FlowFromEndpoints(layers.NewUDPPortEndpoint(1000), layers.NewUDPPortEndpoint(500))
  if t := packet.NetworkLayer(); t != nil && t.TransportFlow() == interestingFlow {
    fmt.Println("Found that UDP flow I was looking for!")
  }

vendor/github.com/google/gopacket/gen.go

@@ -1,75 +0,0 @@
-// Copyright 2019 The GoPacket Authors. All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the LICENSE file in the root of the source
-// tree.
-
-// +build ignore
-
-// This file generates LayersDecoder function for DecodingLayerContainer
-// go run gen.go | gofmt > layers_decoder.go
-package main
-
-import (
-	"fmt"
-	"os"
-	"time"
-)
-
-const headerFmt = `// Copyright 2019 The GoPacket Authors. All rights reserved.
-
-package gopacket
-
-// Created by gen.go, don't edit manually
-// Generated at %s
-
-// LayersDecoder returns DecodingLayerFunc for specified
-// DecodingLayerContainer, LayerType value to start decoding with and
-// some DecodeFeedback.
-func LayersDecoder(dl DecodingLayerContainer, first LayerType, df DecodeFeedback) DecodingLayerFunc {
-  firstDec, ok := dl.Decoder(first)
-  if !ok {
-    return func([]byte, *[]LayerType) (LayerType, error) {
-      return first, nil
-    }
-  }
-`
-
-var funcBody = `return func(data []byte, decoded *[]LayerType) (LayerType, error) {
-  *decoded = (*decoded)[:0] // Truncated decoded layers.
-  typ := first
-  decoder := firstDec
-  for {
-    if err := decoder.DecodeFromBytes(data, df); err != nil {
-      return LayerTypeZero, err
-    }
-    *decoded = append(*decoded, typ)
-    typ = decoder.NextLayerType()
-    if data = decoder.LayerPayload(); len(data) == 0 {
-      break
-    }
-    if decoder, ok = dlc.Decoder(typ); !ok {
-      return typ, nil
-    }
-  }
-  return LayerTypeZero, nil
-}`
-
-func main() {
-	fmt.Fprintf(os.Stderr, "Writing results to stdout\n")
-	types := []string{
-		"DecodingLayerSparse",
-		"DecodingLayerArray",
-		"DecodingLayerMap",
-	}
-
-	fmt.Printf(headerFmt, time.Now())
-	for _, t := range types {
-		fmt.Printf("if dlc, ok := dl.(%s); ok {", t)
-		fmt.Println(funcBody)
-		fmt.Println("}")
-	}
-	fmt.Println("dlc := dl")
-	fmt.Println(funcBody)
-	fmt.Println("}")
-}

vendor/github.com/google/gopacket/go.mod

@@ -3,6 +3,9 @@ module github.com/google/gopacket
 go 1.12
 
 require (
-	golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3
-	golang.org/x/sys v0.0.0-20190405154228-4b34438f7a67
+	github.com/vishvananda/netlink v1.1.0
+	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f
+	golang.org/x/lint v0.0.0-20200302205851-738671d3881b // indirect
+	golang.org/x/net v0.0.0-20190620200207-3b0461eec859
+	golang.org/x/sys v0.0.0-20200217220822-9197077df867
 )

vendor/github.com/google/gopacket/go.sum

@@ -1,7 +1,27 @@
+github.com/vishvananda/netlink v1.1.0 h1:1iyaYNBLmP6L0220aDnYQpo1QEV4t4hJ+xEEhhJH8j0=
+github.com/vishvananda/netlink v1.1.0/go.mod h1:cTgwzPIzzgDAYoQrMm0EdrjRUBkTqKYppBueQtXaqoE=
+github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17pCcGlemwknint6hfoeCVQrEMVwxRLRjXpq+BU=
+github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f h1:p4VB7kIXpOQvVn1ZaTIVp+3vuYAXFe3OJEvjbUYJLaA=
+github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/lint v0.0.0-20200302205851-738671d3881b h1:Wh+f8QHJXR411sJR8/vRBTZ7YapZaRvUcLFFJhusH0k=
+golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 h1:0GoQqolDA55aaLxZyTzK/Y2ePZzZTUrRacwib7cNsYQ=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190405154228-4b34438f7a67 h1:1Fzlr8kkDLQwqMP8GxrhptBLqZG/EDpiATneiZHY998=
 golang.org/x/sys v0.0.0-20190405154228-4b34438f7a67/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d h1:+R4KGOnez64A81RvjARKc4UT5/tI9ujCIVX+P5KiHuI=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190606203320-7fc4e5ec1444/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200217220822-9197077df867 h1:JoRuNIf+rpHl+VhScRQQvzbHed86tKkqwPMV34T8myw=
+golang.org/x/sys v0.0.0-20200217220822-9197077df867/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7 h1:EBZoQjiKKPaLbPrbpssUfuHtwM6KV/vb4U85g/cigFY=
+golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

vendor/github.com/google/gopacket/packet_test.go

@@ -0,0 +1,62 @@
+// Copyright 2012 Google, Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree.
+
+package gopacket
+
+import (
+	"io"
+	"reflect"
+	"testing"
+)
+
+type embedded struct {
+	A, B int
+}
+
+type embedding struct {
+	embedded
+	C, D int
+}
+
+func TestDumpEmbedded(t *testing.T) {
+	e := embedding{embedded: embedded{A: 1, B: 2}, C: 3, D: 4}
+	if got, want := layerString(reflect.ValueOf(e), false, false), "{A=1 B=2 C=3 D=4}"; got != want {
+		t.Errorf("embedded dump mismatch:\n   got: %v\n  want: %v", got, want)
+	}
+}
+
+type singlePacketSource [1][]byte
+
+func (s *singlePacketSource) ReadPacketData() ([]byte, CaptureInfo, error) {
+	if (*s)[0] == nil {
+		return nil, CaptureInfo{}, io.EOF
+	}
+	out := (*s)[0]
+	(*s)[0] = nil
+	return out, CaptureInfo{}, nil
+}
+
+func TestConcatPacketSources(t *testing.T) {
+	sourceA := &singlePacketSource{[]byte{1}}
+	sourceB := &singlePacketSource{[]byte{2}}
+	sourceC := &singlePacketSource{[]byte{3}}
+	concat := ConcatFinitePacketDataSources(sourceA, sourceB, sourceC)
+	a, _, err := concat.ReadPacketData()
+	if err != nil || len(a) != 1 || a[0] != 1 {
+		t.Errorf("expected [1], got %v/%v", a, err)
+	}
+	b, _, err := concat.ReadPacketData()
+	if err != nil || len(b) != 1 || b[0] != 2 {
+		t.Errorf("expected [2], got %v/%v", b, err)
+	}
+	c, _, err := concat.ReadPacketData()
+	if err != nil || len(c) != 1 || c[0] != 3 {
+		t.Errorf("expected [3], got %v/%v", c, err)
+	}
+	if _, _, err := concat.ReadPacketData(); err != io.EOF {
+		t.Errorf("expected io.EOF, got %v", err)
+	}
+}

vendor/github.com/google/gopacket/time_test.go

@@ -0,0 +1,73 @@
+// Copyright 2019 The GoPacket Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree.
+
+package gopacket
+
+import (
+	"testing"
+	"time"
+)
+
+func TestToDuration(t *testing.T) {
+	for i, test := range []struct {
+		r TimestampResolution
+		d time.Duration
+	}{
+		{
+			TimestampResolutionMillisecond,
+			time.Millisecond,
+		},
+		{
+			TimestampResolutionMicrosecond,
+			time.Microsecond,
+		},
+		{
+			TimestampResolutionNanosecond,
+			time.Nanosecond,
+		},
+		{
+			TimestampResolutionNTP,
+			0, // this is not representable since it's ~0.233 nanoseconds
+		},
+		{
+			TimestampResolution{2, -16},
+			15258,
+		},
+		{
+			TimestampResolution{2, 1},
+			2 * time.Second,
+		},
+		{
+			TimestampResolution{10, 1},
+			10 * time.Second,
+		},
+		{
+			TimestampResolution{10, 0},
+			time.Second,
+		},
+		{
+			TimestampResolution{2, 0},
+			time.Second,
+		},
+		{
+			TimestampResolution{0, 0},
+			0,
+		},
+		{
+			TimestampResolution{3, 2},
+			9 * time.Second,
+		},
+		{
+			TimestampResolution{3, -2},
+			111111111,
+		},
+	} {
+		d := test.r.ToDuration()
+		if d != test.d {
+			t.Errorf("%d: resolution: %s want: %d got: %d", i, test.r, test.d, d)
+		}
+	}
+}

vendor/github.com/google/gopacket/writer_test.go

@@ -0,0 +1,94 @@
+// Copyright 2012 Google, Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree.
+
+package gopacket
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestExponentialSizeIncreasePrepend(t *testing.T) {
+	var b serializeBuffer
+	for i, test := range []struct {
+		prepend, size int
+	}{
+		{2, 2},
+		{2, 4},
+		{2, 8},
+		{2, 8},
+		{2, 16},
+		{2, 16},
+		{2, 16},
+		{2, 16},
+		{2, 32},
+	} {
+		b.PrependBytes(test.prepend)
+		if test.size != cap(b.data) {
+			t.Error(i, "size want", test.size, "got", cap(b.data))
+		}
+	}
+	b.Clear()
+	if b.start != 32 {
+		t.Error(b.start)
+	}
+}
+
+func TestExponentialSizeIncreaseAppend(t *testing.T) {
+	var b serializeBuffer
+	for i, test := range []struct {
+		appnd, size int
+	}{
+		{2, 2},
+		{2, 4},
+		{2, 8},
+		{2, 8},
+		{2, 16},
+		{2, 16},
+		{2, 16},
+		{2, 16},
+		{2, 32},
+	} {
+		b.AppendBytes(test.appnd)
+		if test.size != cap(b.data) {
+			t.Error(i, "size want", test.size, "got", cap(b.data))
+		}
+	}
+	b.Clear()
+	if b.start != 0 {
+		t.Error(b.start)
+	}
+}
+
+func ExampleSerializeBuffer() {
+	b := NewSerializeBuffer()
+	fmt.Println("1:", b.Bytes())
+	bytes, _ := b.PrependBytes(3)
+	copy(bytes, []byte{1, 2, 3})
+	fmt.Println("2:", b.Bytes())
+	bytes, _ = b.AppendBytes(2)
+	copy(bytes, []byte{4, 5})
+	fmt.Println("3:", b.Bytes())
+	bytes, _ = b.PrependBytes(1)
+	copy(bytes, []byte{0})
+	fmt.Println("4:", b.Bytes())
+	bytes, _ = b.AppendBytes(3)
+	copy(bytes, []byte{6, 7, 8})
+	fmt.Println("5:", b.Bytes())
+	b.Clear()
+	fmt.Println("6:", b.Bytes())
+	bytes, _ = b.PrependBytes(2)
+	copy(bytes, []byte{9, 9})
+	fmt.Println("7:", b.Bytes())
+	// Output:
+	// 1: []
+	// 2: [1 2 3]
+	// 3: [1 2 3 4 5]
+	// 4: [0 1 2 3 4 5]
+	// 5: [0 1 2 3 4 5 6 7 8]
+	// 6: []
+	// 7: [9 9]
+}