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tcp-load.go
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tcp-load.go
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package main
import (
"fmt"
"net"
"os"
"strconv"
"time"
)
var addr string
var TTimes int
func main() {
if len(os.Args) != 3 {
fmt.Println("usage: %s TIMES IP:PORT", os.Args[0])
return
}
var err error
TTimes, err = strconv.Atoi(os.Args[1])
if err != nil {
fmt.Printf("invalid Times %s - %s\n", os.Args[1], err)
return
}
addr = os.Args[2]
done := make(chan bool)
go server(done)
<-done
// client here
rdBuf := make([]byte, 1024)
wrBuf := []byte("ksdflsldfjdknkvckljodsifu0909809sdfsodfjsldjflksjdfdflkjsdlkfjsdfoiu09823042joidjfosdufsdfjsdfoiuwerw0e98sdfjasodifuosdfuoasudfosdufosufsjdiuwoer98sdfsid")
c, err := net.Dial("tcp", addr)
if err != nil {
fmt.Println("client dial failed: ", err)
return
}
fmt.Println("=====begin=====")
begin := time.Now()
for i := 0; i < TTimes; i++ {
if _, err := c.Write(wrBuf); err != nil {
fmt.Println("client write failed: ", err)
return
}
_, err := c.Read(rdBuf)
if err != nil {
fmt.Println("client read failed: ", err)
return
}
}
sub := time.Now().Sub(begin)
fmt.Printf("time cost is %f s\n", sub.Seconds())
fmt.Println("=====end=====")
return
// wait for server done
}
func server(begin chan bool) {
l, err := net.Listen("tcp", addr)
if err != nil {
fmt.Printf("listen failed: %s\n", err)
return
}
defer l.Close()
close(begin)
rdBuf := make([]byte, 1024)
wrBuf := []byte("sdfsdflsdkweorikjldfjlasjdf90923498279347230429340283471923ijjdjkjdfljasldfjsdiuoiuer09w83479287340203490830928492347123103810238102odsfjdljldjsdfjsdfosudfsdiufosifuosdfu")
conn, err := l.Accept()
if err != nil {
fmt.Println("accept failed: ", err)
return
}
for i := 0; i < TTimes; i++ {
_, err := conn.Read(rdBuf)
if err != nil {
fmt.Println("server read failed: ", err)
return
}
if _, err := conn.Write(wrBuf); err != nil {
fmt.Println("server write failed: ", err)
return
}
}
return
}