github.com/TugasAkhir-QUIC/quic-go@v0.0.2-0.20240215011318-d20e25a9054c/example/main.go (about)

     1  package main
     2  
     3  import (
     4  	"crypto/md5"
     5  	"errors"
     6  	"flag"
     7  	"fmt"
     8  	"io"
     9  	"log"
    10  	"mime/multipart"
    11  	"net/http"
    12  	"strconv"
    13  	"strings"
    14  	"sync"
    15  
    16  	_ "net/http/pprof"
    17  
    18  	"github.com/TugasAkhir-QUIC/quic-go"
    19  	"github.com/TugasAkhir-QUIC/quic-go/http3"
    20  	"github.com/TugasAkhir-QUIC/quic-go/internal/testdata"
    21  	"github.com/TugasAkhir-QUIC/quic-go/qlog"
    22  )
    23  
    24  type binds []string
    25  
    26  func (b binds) String() string {
    27  	return strings.Join(b, ",")
    28  }
    29  
    30  func (b *binds) Set(v string) error {
    31  	*b = strings.Split(v, ",")
    32  	return nil
    33  }
    34  
    35  // Size is needed by the /demo/upload handler to determine the size of the uploaded file
    36  type Size interface {
    37  	Size() int64
    38  }
    39  
    40  // See https://en.wikipedia.org/wiki/Lehmer_random_number_generator
    41  func generatePRData(l int) []byte {
    42  	res := make([]byte, l)
    43  	seed := uint64(1)
    44  	for i := 0; i < l; i++ {
    45  		seed = seed * 48271 % 2147483647
    46  		res[i] = byte(seed)
    47  	}
    48  	return res
    49  }
    50  
    51  func setupHandler(www string) http.Handler {
    52  	mux := http.NewServeMux()
    53  
    54  	if len(www) > 0 {
    55  		mux.Handle("/", http.FileServer(http.Dir(www)))
    56  	} else {
    57  		mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
    58  			fmt.Printf("%#v\n", r)
    59  			const maxSize = 1 << 30 // 1 GB
    60  			num, err := strconv.ParseInt(strings.ReplaceAll(r.RequestURI, "/", ""), 10, 64)
    61  			if err != nil || num <= 0 || num > maxSize {
    62  				w.WriteHeader(400)
    63  				return
    64  			}
    65  			w.Write(generatePRData(int(num)))
    66  		})
    67  	}
    68  
    69  	mux.HandleFunc("/demo/tile", func(w http.ResponseWriter, r *http.Request) {
    70  		// Small 40x40 png
    71  		w.Write([]byte{
    72  			0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,
    73  			0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x28,
    74  			0x01, 0x03, 0x00, 0x00, 0x00, 0xb6, 0x30, 0x2a, 0x2e, 0x00, 0x00, 0x00,
    75  			0x03, 0x50, 0x4c, 0x54, 0x45, 0x5a, 0xc3, 0x5a, 0xad, 0x38, 0xaa, 0xdb,
    76  			0x00, 0x00, 0x00, 0x0b, 0x49, 0x44, 0x41, 0x54, 0x78, 0x01, 0x63, 0x18,
    77  			0x61, 0x00, 0x00, 0x00, 0xf0, 0x00, 0x01, 0xe2, 0xb8, 0x75, 0x22, 0x00,
    78  			0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82,
    79  		})
    80  	})
    81  
    82  	mux.HandleFunc("/demo/tiles", func(w http.ResponseWriter, r *http.Request) {
    83  		io.WriteString(w, "<html><head><style>img{width:40px;height:40px;}</style></head><body>")
    84  		for i := 0; i < 200; i++ {
    85  			fmt.Fprintf(w, `<img src="/demo/tile?cachebust=%d">`, i)
    86  		}
    87  		io.WriteString(w, "</body></html>")
    88  	})
    89  
    90  	mux.HandleFunc("/demo/echo", func(w http.ResponseWriter, r *http.Request) {
    91  		body, err := io.ReadAll(r.Body)
    92  		if err != nil {
    93  			fmt.Printf("error reading body while handling /echo: %s\n", err.Error())
    94  		}
    95  		w.Write(body)
    96  	})
    97  
    98  	// accept file uploads and return the MD5 of the uploaded file
    99  	// maximum accepted file size is 1 GB
   100  	mux.HandleFunc("/demo/upload", func(w http.ResponseWriter, r *http.Request) {
   101  		if r.Method == http.MethodPost {
   102  			err := r.ParseMultipartForm(1 << 30) // 1 GB
   103  			if err == nil {
   104  				var file multipart.File
   105  				file, _, err = r.FormFile("uploadfile")
   106  				if err == nil {
   107  					var size int64
   108  					if sizeInterface, ok := file.(Size); ok {
   109  						size = sizeInterface.Size()
   110  						b := make([]byte, size)
   111  						file.Read(b)
   112  						md5 := md5.Sum(b)
   113  						fmt.Fprintf(w, "%x", md5)
   114  						return
   115  					}
   116  					err = errors.New("couldn't get uploaded file size")
   117  				}
   118  			}
   119  			log.Printf("Error receiving upload: %#v", err)
   120  		}
   121  		io.WriteString(w, `<html><body><form action="/demo/upload" method="post" enctype="multipart/form-data">
   122  				<input type="file" name="uploadfile"><br>
   123  				<input type="submit">
   124  			</form></body></html>`)
   125  	})
   126  
   127  	return mux
   128  }
   129  
   130  func main() {
   131  	// defer profile.Start().Stop()
   132  	go func() {
   133  		log.Println(http.ListenAndServe("localhost:6060", nil))
   134  	}()
   135  	// runtime.SetBlockProfileRate(1)
   136  
   137  	bs := binds{}
   138  	flag.Var(&bs, "bind", "bind to")
   139  	www := flag.String("www", "", "www data")
   140  	tcp := flag.Bool("tcp", false, "also listen on TCP")
   141  	key := flag.String("key", "", "TLS key (requires -cert option)")
   142  	cert := flag.String("cert", "", "TLS certificate (requires -key option)")
   143  	flag.Parse()
   144  
   145  	if len(bs) == 0 {
   146  		bs = binds{"localhost:6121"}
   147  	}
   148  
   149  	handler := setupHandler(*www)
   150  
   151  	var wg sync.WaitGroup
   152  	wg.Add(len(bs))
   153  	var certFile, keyFile string
   154  	if *key != "" && *cert != "" {
   155  		keyFile = *key
   156  		certFile = *cert
   157  	} else {
   158  		certFile, keyFile = testdata.GetCertificatePaths()
   159  	}
   160  	for _, b := range bs {
   161  		fmt.Println("listening on", b)
   162  		bCap := b
   163  		go func() {
   164  			var err error
   165  			if *tcp {
   166  				err = http3.ListenAndServe(bCap, certFile, keyFile, handler)
   167  			} else {
   168  				server := http3.Server{
   169  					Handler: handler,
   170  					Addr:    bCap,
   171  					QuicConfig: &quic.Config{
   172  						Tracer: qlog.DefaultTracer,
   173  					},
   174  				}
   175  				err = server.ListenAndServeTLS(certFile, keyFile)
   176  			}
   177  			if err != nil {
   178  				fmt.Println(err)
   179  			}
   180  			wg.Done()
   181  		}()
   182  	}
   183  	wg.Wait()
   184  }