/
server.go
78 lines (69 loc) · 1.58 KB
/
server.go
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package main
import (
"flag"
"fmt"
"io"
"log"
"net"
"net/http"
"os"
"strconv"
"time"
"golang.org/x/net/netutil"
)
func Default(port string) {
http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
time.Sleep(time.Millisecond * 500) // for watch netstat
io.WriteString(w, "Default")
})
p, _ := strconv.Atoi(port)
http_config := &http.Server{
Addr: fmt.Sprintf("localhost:%d", p),
}
err := http_config.ListenAndServe()
if err != nil {
log.Fatalln(err)
}
}
func Limited(port, limit string) {
http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
time.Sleep(time.Millisecond * 500) // for watch netstat
io.WriteString(w, "Limited")
})
p, _ := strconv.Atoi(port)
addr := fmt.Sprintf("localhost:%d", p)
listener, err := net.Listen("tcp", addr)
if err != nil {
log.Fatalln(err)
}
l, _ := strconv.Atoi(limit)
limit_listener := netutil.LimitListener(listener, l)
http_config := &http.Server{}
defer limit_listener.Close()
err = http_config.Serve(limit_listener)
if err != nil {
log.Fatalln(err)
}
}
func Server() {
var port string
var limit string
f := flag.NewFlagSet(os.Args[0], flag.ExitOnError)
f.StringVar(&port, "port", "8080", "listen port")
f.StringVar(&limit, "limit", "10", "concurrent limit")
f.Parse(os.Args[1:])
for 0 < f.NArg() {
f.Parse(f.Args()[1:])
}
fmt.Println(port)
fmt.Println(limit)
//Default(port)
Limited(port, limit)
}
func main() {
Server()
}