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January 28, 2021 16:45
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| package main | |
| import ( | |
| "fmt" | |
| "log" | |
| "net/http" | |
| ) | |
| func main() { | |
| http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { | |
| log.Printf("GET /") | |
| w.Write([]byte(` | |
| <html> | |
| <input type="file" onchange="upload(this.files[0])"> | |
| <script> | |
| function upload(file) { | |
| console.log('file', file, '--') | |
| let xhr = new XMLHttpRequest() | |
| xhr.addEventListener('loadstart', function (e) { console.log('loadstart', e, xhr, '--') }) | |
| xhr.addEventListener('loadend', function (e) { console.log('loadend', e, xhr, '--') }) | |
| xhr.addEventListener('load', function (e) { console.log('load', e, xhr, '--') }) | |
| xhr.addEventListener('error', function (e) { console.log('error', e, xhr, '--') }) | |
| xhr.addEventListener('abort', function (e) { console.log('abort', e, xhr, '--') }) | |
| xhr.addEventListener('readystatechange', function (e) { console.log('readystatechange', e, xhr, '--') }) | |
| xhr.upload.addEventListener("progress", function (e) { | |
| console.log('progress ' + Math.round((e.loaded * 100.0 / e.total) || 100), e, xhr, '--') | |
| }) | |
| xhr.open('PUT', 'http://localhost:9999/upload') | |
| xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest') | |
| xhr.overrideMimeType(file.type); | |
| xhr.send(file) | |
| } | |
| </script> | |
| </html> | |
| `)) | |
| }) | |
| http.HandleFunc("/upload", func(w http.ResponseWriter, r *http.Request) { | |
| log.Printf("PUT /upload") | |
| b := make([]byte, 10*1024*1024) | |
| n, err := r.Body.Read(b) | |
| r.Body.Close() | |
| fmt.Printf("read=%d, err=%#v\n", n, err) | |
| w.WriteHeader(http.StatusRequestEntityTooLarge) | |
| }) | |
| http.ListenAndServe(":9999", nil) | |
| } |
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