go语言之TCP编程
2021/8/15 17:05:35
本文主要是介绍go语言之TCP编程,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
demo1
- server
package main import ( "fmt" "net" "os" "strconv" "time" ) func CheckError(err error){ if err != nil{ fmt.Println(err) os.Exit(1) } } func main() { ip := "127.0.0.1" port := 5656 tcpAddr, err := net.ResolveTCPAddr("tcp4", ip+":"+strconv.Itoa(port)) CheckError(err) listener, err := net.ListenTCP("tcp4", tcpAddr) CheckError(err) fmt.Println("waiting for client connnetion......") conn, err := listener.Accept() CheckError(err) fmt.Printf("establish connnection to client %s\n", conn.RemoteAddr().String()) request := make([]byte, 256) _, err = conn.Read(request) CheckError(err) fmt.Printf("receive request %s\n", string(request)) n, err := conn.Write([]byte("hello "+ string(request))) CheckError(err) fmt.Printf("write response %d bytes\n", n) time.Sleep(1 * time.Second) _, err = conn.Write([]byte("oops")) CheckError(err) }
- client
package main import( "net" "fmt" "strconv" "os" ) func CheckError(err error) { if err != nil { fmt.Println(err) os.Exit(1) } } func main() { ip := "127.0.0.1" port := 5656 tcpAddr, err := net.ResolveTCPAddr("tcp4", ip+":"+strconv.Itoa(port)) CheckError(err) fmt.Printf("ip %s port %v\n", tcpAddr.IP.String(), tcpAddr.Port) conn, err := net.DialTCP("tcp4", nil ,tcpAddr) CheckError(err) fmt.Printf("establish connnection to server %s\n",conn.RemoteAddr().String()) n, err := conn.Write([]byte("china")) CheckError(err) fmt.Printf("write request %d\n", n) response := make([]byte, 256) _, err = conn.Read(response) CheckError(err) fmt.Printf("receive response: %s\n", string(response)) conn.Close() }
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