How to use Download method of html Package

Best K6 code snippet using html.Download

main.go

Source:main.go Github

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...41 return app, nil42}43// Run runs the application.44func (app *App) Run(ctx context.Context) error {45 if app.Download {46 return app.download(ctx)47 } else if app.Validate {48 return app.validate(ctx)49 }50 return app.list(ctx)51}52func (app *App) contentFetcher(ctx context.Context, download string, dc chan Download) func() error {53 return func() error {54 if _, err := stdurl.Parse(download); err != nil {55 log.Printf("invalid url: %s", download)56 return nil57 }58 resp, err := http.Get(download)59 if err != nil {60 panic(err)61 }62 if resp.StatusCode >= http.StatusMultipleChoices {63 return errors.New(download + ": " + resp.Status)64 }65 select {66 case <-ctx.Done():67 return nil68 case dc <- Download{Content: resp.Body, Location: download}:69 }70 return nil71 }72}73func (app *App) contentWriter(ctx context.Context, dc chan Download) func() error {74 return func() error {75 select {76 case <-ctx.Done():77 return nil78 case download := <-dc:79 defer func() { _ = download.Content.Close() }() // Best effort.80 u, err := stdurl.Parse(download.Location)81 if err != nil {82 return errors.Wrap(err, "parsing url")83 }84 if err := os.MkdirAll(path.Dir(u.Path[1:]), os.ModePerm); err != nil {85 return errors.Wrap(err, "making directory")86 }87 f, err := os.Create(u.Path[1:])88 if err != nil {89 return errors.Wrap(err, "creating file")90 }91 defer func() { _ = f.Close() }() // Best effort.92 if _, err := io.Copy(f, download.Content); err != nil {93 return errors.Wrap(err, "writing file")94 }95 }96 return nil97 }98}99func (app *App) download(ctx context.Context) error {100 urls, err := app.urls()101 if err != nil {102 return errors.Wrap(err, "getting urls")103 }104 for _, url := range urls {105 // Get the URL's of the actual audio files.106 downloads, err := app.scrape(ctx, url)107 if err != nil {108 return errors.Wrap(err, "scraping audio file URL's")109 }110 // Run the downloads in parallel.111 if err := app.fetch(ctx, downloads); err != nil {112 return errors.Wrap(err, "fetching audio files")113 }114 }115 return nil116}117func (app *App) fetch(ctx context.Context, downloads []string) error {118 var (119 dc = make(chan Download)120 g, gctx = errgroup.WithContext(ctx)121 )122 defer close(dc)123 for _, dl := range downloads {124 // Spawn goroutines that will fetch each file.125 g.Go(app.contentFetcher(gctx, dl, dc))126 // Spawn goroutines that will write the data to local disk.127 g.Go(app.contentWriter(gctx, dc))128 }129 return g.Wait()130}131func (app *App) list(ctx context.Context) error {132 urls, err := app.urls()133 if err != nil {134 return errors.Wrap(err, "getting urls")135 }136 return json.NewEncoder(os.Stdout).Encode(urls)137}138func (app *App) scrape(ctx context.Context, url string) ([]string, error) {139 u, err := stdurl.Parse(url)140 if err != nil {141 return nil, errors.Wrap(err, "parsing url")142 }143 resp, err := http.Get(url)144 if err != nil {145 return nil, errors.Wrap(err, "fetching "+url)146 }147 defer func() { _ = resp.Body.Close() }() // Best effort.148 root, err := html.Parse(resp.Body)149 if err != nil {150 return nil, errors.Wrap(err, "parsing html")151 }152 var (153 dm = map[string]struct{}{}154 links = scrape.FindAll(root, scrape.ByTag(atom.A))155 )156 for _, link := range links {157 for _, attr := range link.Attr {158 if attr.Key != "href" || !IsAudioFile(attr.Val) {159 continue160 }161 val := attr.Val162 if strings.HasPrefix(attr.Val, "../") {163 val = attr.Val[3:]164 }165 dm["http://"+u.Host+"/"+val] = struct{}{}166 }167 }168 var downloads []string169 for u := range dm {170 downloads = append(downloads, u)171 }172 return downloads, nil173}174func (app *App) urls() ([]string, error) {175 var out []string176 if app.Era != "all" {177 sections, ok := app.Samples[app.Era]178 if !ok {179 return nil, errors.New("unsupported era: " + app.Era)180 }181 if len(app.Section) > 0 {182 urls, ok := sections[app.Section]183 if !ok {184 return nil, errors.New("unsupported section: " + app.Section)185 }186 out = append(out, urls...)187 } else {188 for _, urls := range sections {189 out = append(out, urls...)190 }191 }192 } else {193 for _, sections := range app.Samples {194 for _, urls := range sections {195 out = append(out, urls...)196 }197 }198 }199 return out, nil200}201func (app *App) validate(ctx context.Context) error {202 urls, err := app.urls()203 if err != nil {204 return errors.Wrap(err, "getting urls")205 }206 for _, url := range urls {207 // Get the URL's of the actual audio files.208 downloads, err := app.scrape(ctx, url)209 if err != nil {210 return errors.Wrap(err, "scraping audio file URL's")211 }212 for _, dl := range downloads {213 if _, err := stdurl.Parse(dl); err != nil {214 log.Printf("download url '%s' is invalid", dl)215 }216 }217 }218 return nil219}220// Config defines the application's configuration.221type Config struct {222 Download bool `json:"download"`223 Era string `json:"era"`224 Section string `json:"section"`225 // Samples is a map from "era" (i.e. pre-2012, post-2012) to "section"226 // (e.g. brass, percussion, woodwind) to the list of URL's that227 // contain the sample download links.228 Samples map[string]map[string][]string `json:"samples"`229 Validate bool `json:"validate"`230}231// NewConfig parses the application's configuration from env/flags.232func NewConfig() (Config, error) {233 config := Config{234 Samples: map[string]map[string][]string{235 "pre-2012": {236 "woodwind": {237 "http://theremin.music.uiowa.edu/MISflute.html",238 "http://theremin.music.uiowa.edu/MISaltoflute.html",239 "http://theremin.music.uiowa.edu/MISbassflute.html",240 "http://theremin.music.uiowa.edu/MISoboe.html",241 "http://theremin.music.uiowa.edu/MISEbclarinet.html",242 "http://theremin.music.uiowa.edu/MISBbclarinet.html",243 "http://theremin.music.uiowa.edu/MISbassclarinet.html",244 "http://theremin.music.uiowa.edu/MISbassoon.html",245 "http://theremin.music.uiowa.edu/MISsopranosaxophone.html",246 "http://theremin.music.uiowa.edu/MISaltosaxophone.html",247 },248 "brass": {249 "http://theremin.music.uiowa.edu/MISFrenchhorn.html",250 "http://theremin.music.uiowa.edu/MISBbtrumpet.html",251 "http://theremin.music.uiowa.edu/MIStenortrombone.html",252 "http://theremin.music.uiowa.edu/MISbasstrombone.html",253 "http://theremin.music.uiowa.edu/MIStuba.html",254 },255 "strings": {256 "http://theremin.music.uiowa.edu/MISviolin.html",257 "http://theremin.music.uiowa.edu/MISviola.html",258 "http://theremin.music.uiowa.edu/MIScello.html",259 "http://theremin.music.uiowa.edu/MISdoublebass.html",260 "http://theremin.music.uiowa.edu/MISviolin2012.html",261 "http://theremin.music.uiowa.edu/MISviola2012.html",262 "http://theremin.music.uiowa.edu/MIScello2012.html",263 "http://theremin.music.uiowa.edu/MISdoublebass2012.html",264 },265 "percussion": {266 "http://theremin.music.uiowa.edu/Mismarimba.html",267 "http://theremin.music.uiowa.edu/MISxylophone.html",268 "http://theremin.music.uiowa.edu/Misvibraphone.html",269 "http://theremin.music.uiowa.edu/MISbells.html",270 "http://theremin.music.uiowa.edu/MIScrotales.html",271 "http://theremin.music.uiowa.edu/MISgongtamtams.html",272 "http://theremin.music.uiowa.edu/MIShandpercussion.html",273 "http://theremin.music.uiowa.edu/MIStambourines.html",274 },275 "piano/other": {276 "http://theremin.music.uiowa.edu/MISpiano.html",277 "http://theremin.music.uiowa.edu/MISballoonpop.html",278 "http://theremin.music.uiowa.edu/MISguitar.html",279 },280 "foundobjects": {281 "http://theremin.music.uiowa.edu/MISfoundobjects1.html",282 },283 },284 "post-2012": {285 "woodwinds": {286 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISFlute2012.html",287 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISaltoflute2012.html",288 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBassFlute2012.html",289 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISOboe2012.html",290 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISEbClarinet2012.html",291 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBbClarinet2012.html",292 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBbBassClarinet2012.html",293 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBassoon2012.html",294 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBbSopranoSaxophone2012.html",295 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISEbAltoSaxophone2012.html",296 },297 "brass": {298 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISHorn2012.html",299 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBbTrumpet2012.html",300 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISTenorTrombone2012.html",301 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBassTrombone2012.html",302 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISTuba2012.html",303 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBbBassClarinet2012.html",304 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBassoon2012.html",305 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBbSopranoSaxophone2012.html",306 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISEbAltoSaxophone2012.html",307 },308 "strings": {309 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISViolin2012.html",310 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISViola2012.html",311 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISCello2012.html",312 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISDoubleBass2012.html",313 },314 "percussion": {315 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISMarimba2012.html",316 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISxylophone2012.html",317 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISVibraphone2012.html",318 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISBells2012.html",319 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISCrotales2012.html",320 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISCymbals2012.html",321 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISGongsTamTams2012.html",322 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISHandPercussion2012.html",323 "http://theremin.music.uiowa.edu/MIS-Pitches-2012/MISTambourines2012.html",324 },325 "foundobjects": {326 "http://theremin.music.uiowa.edu/MISfoundobjects2.html",327 },328 },329 },330 }331 flag.BoolVar(&config.Download, "dl", false, "Download samples (default is to just print a JSON list to stdout).")332 flag.StringVar(&config.Era, "e", "all", "Filter by era ('all', 'pre-2012', 'post-2012').")333 flag.StringVar(&config.Section, "s", "", "(REQUIRED) Section (e.g. brass, woodwind, percussion")334 flag.BoolVar(&config.Validate, "validate", false, "Validate the URL of every audio file on the site.")335 flag.Parse()336 if config.Era != "all" {337 sections, ok := config.Samples[config.Era]338 if !ok {339 return config, errors.New("unsupported era: " + config.Era)340 }341 // Validate -s if it was provided.342 if len(config.Section) > 0 {343 if _, ok := sections[config.Section]; !ok {344 return config, errors.New("unsupported section: " + config.Section)345 }346 }347 }348 return config, nil349}350// Download represents a single audio file download.351type Download struct {352 Content io.ReadCloser353 Location string354}355// IsAudioFile returns true if the provided string ends with .aif or .aiff or .wav356func IsAudioFile(s string) bool {357 if strings.HasSuffix(s, ".aif") || strings.HasSuffix(s, ".aiff") || strings.HasSuffix(s, ".wav") {358 return true359 }360 return false361}...

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dbip_lite_test.go

Source:dbip_lite_test.go Github

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...39}40func (suite *MockedDBIPTestSuite) TestBaseDirectory() {41 suite.Equal(suite.BaseDirectory(), suite.prov.BaseDirectory())42}43func (suite *MockedDBIPTestSuite) TestDownloadCancelledContext() {44 ctx, cancel := context.WithCancel(context.Background())45 cancel()46 suite.Error(suite.prov.Download(ctx, suite.tmpDir))47}48func (suite *MockedDBIPTestSuite) TestDownloadSeedPageBadStatus() {49 ctx := context.Background()50 httpmock.RegisterResponder("GET",51 "https://db-ip.com/db/download/ip-to-city-lite",52 httpmock.NewStringResponder(http.StatusInternalServerError, ""))53 suite.Error(suite.prov.Download(ctx, suite.tmpDir))54}55func (suite *MockedDBIPTestSuite) TestDownloadSeedPageBadHTML() {56 ctx := context.Background()57 httpmock.RegisterResponder("GET",58 "https://db-ip.com/db/download/ip-to-city-lite",59 httpmock.NewStringResponder(http.StatusOK, "<"))60 suite.Error(suite.prov.Download(ctx, suite.tmpDir))61}62func (suite *MockedDBIPTestSuite) TestDownloadSeedPageNoLink() {63 ctx := context.Background()64 httpmock.RegisterResponder("GET",65 "https://db-ip.com/db/download/ip-to-city-lite",66 httpmock.NewStringResponder(http.StatusOK, `67<html><body>68 <div class="card">69 <div>70 <a href="url">Download me</a>71 </div>72 </div>73</body></html>74 `))75 suite.Error(suite.prov.Download(ctx, suite.tmpDir))76}77func (suite *MockedDBIPTestSuite) TestDownloadSeedPageNoChecksum() {78 ctx := context.Background()79 httpmock.RegisterResponder("GET",80 "https://db-ip.com/db/download/ip-to-city-lite",81 httpmock.NewStringResponder(http.StatusOK, `82<html><body>83 <div class="card">84 <dl>85 <dd class="small">aaa</dd>86 <dd class="small"></dd>87 </dl>88 <div>89 <a href="https://download.db-ip.com/free/file.mmdb.gz" class="free_download_link">Download me</a>90 </div>91 </div>92</body></html>93 `))94 suite.Error(suite.prov.Download(ctx, suite.tmpDir))95}96func (suite *MockedDBIPTestSuite) TestCannotDownloadFile() {97 ctx := context.Background()98 httpmock.RegisterResponder("GET",99 "https://db-ip.com/db/download/ip-to-city-lite",100 httpmock.NewStringResponder(http.StatusOK, `101<html><body>102 <div class="card">103 <dl>104 <dd class="small">aaa</dd>105 <dd class="small">AAf4c61ddcc5e8a2dabede0f3b482cd9aea9434d</dd>106 </dl>107 <div>108 <a href="https://download.db-ip.com/free/file.mmdb.gz" class="free_download_link">Download me</a>109 </div>110 </div>111</body></html>112 `))113 httpmock.RegisterResponder("GET",114 "https://download.db-ip.com/free/file.mmdb.gz",115 httpmock.NewStringResponder(http.StatusNotFound, ""))116 suite.Error(suite.prov.Download(ctx, suite.tmpDir))117}118func (suite *MockedDBIPTestSuite) TestDownloadCannotSaveFile() {119 if err := os.Chmod(suite.tmpDir, 0400); err != nil {120 panic(err)121 }122 ctx := context.Background()123 httpmock.RegisterResponder("GET",124 "https://db-ip.com/db/download/ip-to-city-lite",125 httpmock.NewStringResponder(http.StatusOK, `126<html><body>127 <div class="card">128 <dl>129 <dd class="small">aaa</dd>130 <dd class="small">AAf4c61ddcc5e8a2dabede0f3b482cd9aea9434d</dd>131 </dl>132 <div>133 <a href="https://download.db-ip.com/free/file.mmdb.gz" class="free_download_link">Download me</a>134 </div>135 </div>136</body></html>137 `))138 fileBuffer := &bytes.Buffer{}139 wr := gzip.NewWriter(fileBuffer)140 wr.Write([]byte{1, 2, 3}) // nolint: errcheck141 wr.Close()142 httpmock.RegisterResponder("GET",143 "https://download.db-ip.com/free/file.mmdb.gz",144 httpmock.NewBytesResponder(http.StatusOK, fileBuffer.Bytes()))145 suite.Error(suite.prov.Download(ctx, suite.tmpDir))146}147func (suite *MockedDBIPTestSuite) TestDownloadIncorrectChecksum() {148 ctx := context.Background()149 httpmock.RegisterResponder("GET",150 "https://db-ip.com/db/download/ip-to-city-lite",151 httpmock.NewStringResponder(http.StatusOK, `152<html><body>153 <div class="card">154 <dl>155 <dd class="small">aaa</dd>156 <dd class="small">7037807198c22a7d2b0807371d763779a84fdfca</dd>157 </dl>158 <div>159 <a href="https://download.db-ip.com/free/file.mmdb.gz" class="free_download_link">Download me</a>160 </div>161 </div>162</body></html>163 `))164 fileBuffer := &bytes.Buffer{}165 wr := gzip.NewWriter(fileBuffer)166 wr.Write([]byte{1, 2, 3}) // nolint: errcheck167 wr.Close()168 httpmock.RegisterResponder("GET",169 "https://download.db-ip.com/free/file.mmdb.gz",170 httpmock.NewBytesResponder(http.StatusOK, fileBuffer.Bytes()))171 suite.Error(suite.prov.Download(ctx, suite.tmpDir))172}173func (suite *MockedDBIPTestSuite) TestDownloadOk() {174 ctx := context.Background()175 httpmock.RegisterResponder("GET",176 "https://db-ip.com/db/download/ip-to-city-lite",177 httpmock.NewStringResponder(http.StatusOK, `178<html><body>179 <div class="card">180 <dl>181 <dd class="small">aaa</dd>182 <dd class="small">7037807198c22a7d2b0807371d763779a84fdfcF</dd>183 </dl>184 <div>185 <a href="https://download.db-ip.com/free/file.mmdb.gz" class="free_download_link">Download me</a>186 </div>187 </div>188</body></html>189 `))190 fileBuffer := &bytes.Buffer{}191 wr := gzip.NewWriter(fileBuffer)192 wr.Write([]byte{1, 2, 3}) // nolint: errcheck193 wr.Close()194 httpmock.RegisterResponder("GET",195 "https://download.db-ip.com/free/file.mmdb.gz",196 httpmock.NewBytesResponder(http.StatusOK, fileBuffer.Bytes()))197 suite.NoError(suite.prov.Download(ctx, suite.tmpDir))198}199type IntegrationDBIPTestSuite struct {200 TmpDirTestSuite201 OfflineProviderTestSuite202}203func (suite *IntegrationDBIPTestSuite) SetupTest() {204 suite.TmpDirTestSuite.SetupTest()205 suite.OfflineProviderTestSuite.SetupTest()206}207func (suite *IntegrationDBIPTestSuite) TearDownTest() {208 suite.OfflineProviderTestSuite.TearDownTest()209 suite.TmpDirTestSuite.TearDownTest()210}211func (suite *IntegrationDBIPTestSuite) TestFull() {212 prov := providers.NewDBIPLite(suite.http, time.Minute, "")213 suite.NoError(prov.Download(context.Background(), suite.tmpDir))214 suite.NoError(prov.Open(suite.tmpDir))215 _, err := prov.Lookup(context.Background(), net.ParseIP("80.80.80.80"))216 suite.NoError(err)217}218func TestDBIP(t *testing.T) {219 suite.Run(t, &MockedDBIPTestSuite{})220}221func TestIntegrationDBIP(t *testing.T) {222 if testing.Short() {223 t.Skip("Skipped because of the short mode")224 }225 suite.Run(t, &IntegrationDBIPTestSuite{})226}...

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filesystem_test.go

Source:filesystem_test.go Github

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...23 "testing"24 "github.com/ethereum/go-ethereum/common"25 "github.com/ethereum/go-ethereum/swarm/storage"26)27var testDownloadDir, _ = ioutil.TempDir(os.TempDir(), "bzz-test")28func testFileSystem(t *testing.T, f func(*FileSystem)) {29 testApi(t, func(api *Api) {30 f(NewFileSystem(api))31 })32}33func readPath(t *testing.T, parts ...string) string {34 file := filepath.Join(parts...)35 content, err := ioutil.ReadFile(file)36 if err != nil {37 t.Fatalf("unexpected error reading '%v': %v", file, err)38 }39 return string(content)40}41func TestApiDirUpload0(t *testing.T) {42 testFileSystem(t, func(fs *FileSystem) {43 api := fs.api44 bzzhash, err := fs.Upload(filepath.Join("testdata", "test0"), "")45 if err != nil {46 t.Fatalf("unexpected error: %v", err)47 }48 content := readPath(t, "testdata", "test0", "index.html")49 resp := testGet(t, api, bzzhash, "index.html")50 exp := expResponse(content, "text/html; charset=utf-8", 0)51 checkResponse(t, resp, exp)52 content = readPath(t, "testdata", "test0", "index.css")53 resp = testGet(t, api, bzzhash, "index.css")54 exp = expResponse(content, "text/css", 0)55 checkResponse(t, resp, exp)56 key := storage.Key(common.Hex2Bytes(bzzhash))57 _, _, _, err = api.Get(key, "")58 if err == nil {59 t.Fatalf("expected error: %v", err)60 }61 downloadDir := filepath.Join(testDownloadDir, "test0")62 defer os.RemoveAll(downloadDir)63 err = fs.Download(bzzhash, downloadDir)64 if err != nil {65 t.Fatalf("unexpected error: %v", err)66 }67 newbzzhash, err := fs.Upload(downloadDir, "")68 if err != nil {69 t.Fatalf("unexpected error: %v", err)70 }71 if bzzhash != newbzzhash {72 t.Fatalf("download %v reuploaded has incorrect hash, expected %v, got %v", downloadDir, bzzhash, newbzzhash)73 }74 })75}76func TestApiDirUploadModify(t *testing.T) {77 testFileSystem(t, func(fs *FileSystem) {...

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1import (2func main() {3 c := colly.NewCollector()4 c.OnHTML("a[href]", func(e *colly.HTMLElement) {5 link := e.Attr("href")6 fmt.Printf("Link found: %q -> %s7 e.Request.Visit(link)8 })9 c.OnRequest(func(r *colly.Request) {10 fmt.Println("Visiting", r.URL)11 })12 c.OnResponse(func(r *colly.Response) {13 fmt.Println("Visited", r.Request.URL)14 })15 c.OnError(func(r *colly.Response, err error) {16 fmt.Println("Something went wrong:", err)17 })18 if err != nil {19 log.Fatal(err)20 }21}

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1import (2func main() {3 if err != nil {4 fmt.Println("Error: ", err)5 }6 defer resp.Body.Close()7 fmt.Println("Status Code: ", resp.StatusCode)8 fmt.Println("Status: ", resp.Status)9 fmt.Println("Protocol: ", resp.Proto)10 fmt.Println("Header: ", resp.Header)11 fmt.Println("Content Length: ", resp.ContentLength)12 fmt.Println("Transfer Encoding: ", resp.TransferEncoding)13 fmt.Println("Uncompressed: ", resp.Uncompressed)14 fmt.Println("Trailer: ", resp.Trailer)15 fmt.Println("Request: ", resp.Request)16 fmt.Println("TLS: ", resp.TLS)17}

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1import "fmt"2import "net/http"3import "io"4func main() {5if err != nil {6}7defer resp.Body.Close()8body, err := io.ReadAll(resp.Body)9fmt.Println(string(body))10}11import "fmt"12import "net/http"13import "io"14func main() {15if err != nil {16}17defer resp.Body.Close()18body, err := io.ReadAll(resp.Body)19fmt.Println(string(body))20}21import "fmt"22import "net/http"23import "io"24func main() {25if err != nil {26}27defer resp.Body.Close()28body, err := io.ReadAll(resp.Body)29fmt.Println(string(body))30}31import "fmt"32import "net/http"33import "io"34func main() {35if err != nil {36}37defer resp.Body.Close()38body, err := io.ReadAll(resp.Body)39fmt.Println(string(body))40}41import "fmt"42import "net/http"43import "io"44func main() {45if err != nil {46}47defer resp.Body.Close()48body, err := io.ReadAll(resp.Body)49fmt.Println(string(body))50}51import "fmt"52import "net/http"53import "io"54func main() {55if err != nil {56}57defer resp.Body.Close()58body, err := io.ReadAll(resp.Body)59fmt.Println(string(body))60}

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1import (2func main() {3 out, err := os.Create("1.html")4 if err != nil {5 panic(err)6 }7 defer out.Close()8 if err != nil {9 panic(err)10 }11 defer resp.Body.Close()12 if resp.StatusCode != http.StatusOK {13 panic(resp.Status)14 }15 _, err = io.Copy(out, resp.Body)16 if err != nil {17 panic(err)18 }19}20import (21func main() {22 if err != nil {23 panic(err)24 }25 defer resp.Body.Close()26 if resp.StatusCode != http.StatusOK {27 panic(resp.Status)28 }29 out, err := os.Create("2.html")30 if err != nil {31 panic(err)32 }33 defer out.Close()34 _, err = io.Copy(out, resp.Body)35 if err != nil {36 panic(err)37 }38}39import (40func main() {41 if err != nil {42 panic(err)43 }44 defer resp.Body.Close()45 if resp.StatusCode != http.StatusOK {46 panic(resp.Status)47 }48 fmt.Println(resp.Header)49}50import (51func main() {52 if err != nil {53 panic(err)

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1import (2func main() {3 resp, err := http.Get(url)4 if err != nil {5 log.Fatal(err)6 }7 doc, err := htmlquery.Parse(resp.Body)8 if err != nil {9 log.Fatal(err)10 }11 f, err := os.Create("output.html")12 if err != nil {13 log.Fatal(err)14 }15 err = htmlquery.WriteFile(doc, f)16 if err != nil {17 log.Fatal(err)18 }19}20import (21func main() {22 resp, err := http.Get(url)23 if err != nil {24 log.Fatal(err)25 }26 doc, err := goquery.NewDocumentFromReader(resp.Body)27 if err != nil {28 log.Fatal(err)29 }30 f, err := os.Create("output.html")31 if err != nil {32 log.Fatal(err)33 }34 _, err = doc.WriteTo(f)35 if err != nil {36 log.Fatal(err)37 }38}39import (40func main() {41 resp, err := http.Get(url)42 if err != nil {43 log.Fatal(err)44 }

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1import (2func main() {3 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {4 io.WriteString(w, `5 })6 http.HandleFunc("/upload", func(w http.ResponseWriter, r *http.Request) {7 file, handler, err := r.FormFile("q")8 if err != nil {9 http.Error(w, err.Error(), http.StatusInternalServerError)10 }11 defer file.Close()12 fmt.Fprintf(w, "%v", handler.Header)13 f, err := os.OpenFile("./" + handler.Filename, os.O_WRONLY|os.O_CREATE, 0666)14 if err != nil {15 http.Error(w, err.Error(), http.StatusInternalServerError)16 }17 defer f.Close()18 io.Copy(f, file)19 })20 http.ListenAndServe(":8080", nil)21}22import (23func main() {24 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {25 io.WriteString(w, `26 })27 http.HandleFunc("/upload", func(w http.ResponseWriter, r *http.Request) {28 file, handler, err := r.FormFile("q")29 if err != nil {30 http.Error(w, err.Error(), http.StatusInternalServerError)

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1import (2func main() {3 newFile, err := os.Create("newFile.txt")4 if err != nil {5 fmt.Println(err)6 }7 defer newFile.Close()8 response, err := http.Get(url)9 if err != nil {10 fmt.Println(err)11 }12 defer response.Body.Close()13 _, err = io.Copy(newFile, response.Body)14 if err != nil {15 fmt.Println(err)16 }17}18import (19func main() {20 newFile, err := os.Create("newFile.txt")21 if err != nil {22 fmt.Println(err)23 }24 defer newFile.Close()25 response, err := http.Get(url)26 if err != nil {27 fmt.Println(err)28 }29 defer response.Body.Close()30 _, err = io.Copy(newFile, response.Body)31 if err != nil {32 fmt.Println(err)33 }

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1import (2func main() {3 fmt.Println("Downloading file from internet")4 fmt.Println("File downloaded successfully")5 os.Exit(0)6}7import (8func main() {9 fmt.Println("Downloading file from internet")10 fmt.Println("File downloaded successfully")11 os.Exit(0)12}

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