this is the server program：
> package main
>
> import (
> "fmt"
> "net"
> "os"
> "strings"
> )
>
> func main() {
>
> listener, err := net.Listen("tcp", "0.0.0.0:400")
> checkError(err)
> for i := 0; i < 10; i++ {
> conn, err := listener.Accept()
> if err != nil {
> continue
> }
> handleClient(conn)
> conn.Close()
> }
> }
> func handleClient(conn net.Conn) {
> var buf [512]byte
> for {
> n, err := conn.Read(buf[0:])
> if err != nil {
> return
> }
> rAddr := conn.RemoteAddr()
> fmt.Println("receive from client", rAddr.String(), string(buf[0:n]))
> n, err2 := conn.Write([]byte("welcome client!"))
> if err2 != nil {
> return
> }
> aa := string("nice to meet you")
> if strings.Contains(string(buf[0:n]), aa) {
> n, err2 = conn.Write([]byte("nice to meet you too"))
> if err2 != nil {
> return
> }
> }
> }
> }
> func checkError(err error) {
> if err != nil {
> fmt.Fprintf(os.Stderr, "fatal error: %s", err.Error())
> os.Exit(1)
> }
> }
>
>
this is the client program:
package main
import (
"fmt"
"net"
"os"
)
func main() {
var buf [512]byte
if len(os.Args) != 2 {
fmt.Fprintf(os.Stderr, "usage:%s host:port\n", os.Args[0])
}
_, err := net.ResolveTCPAddr("tcp", "127.0.0.1:400")
checkError(err)
conn, err := net.Dial("tcp", "127.0.0.1:400")
checkError(err)
rAddr := conn.RemoteAddr()
n, err := conn.Write([]byte("hello server!"))
checkError(err)
n, err = conn.Write([]byte(" nice to meet you"))
checkError(err)
n, err = conn.Read(buf[0:])
if err != nil {
return
}
checkError(err)
fmt.Println("reply from server", rAddr.String(), string(buf[0:n]))
conn.Close()
os.Exit(0)
}
func checkError(err error) {
if err != nil {
fmt.Fprintf(os.Stderr, "fatal error: %s", err.Error())
os.Exit(1)
}
}
Just a little change and I run it successfully.But I am doubt why it can't
print "nice to meet you too"?？And how to solve it??
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