commit 92e0da04578eca80160738cbc36f052c1493b280
Author: lvmaorui <lvmr@novastar.tech>
Date:   Wed Mar 18 14:28:17 2020 +0800

    test commnicate of ipc & rpc

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..3b5ddee
--- /dev/null
+++ b/main.go
@@ -0,0 +1,177 @@
+package main
+
+import (
+	"encoding/binary"
+	"fmt"
+	"github.com/pborman/getopt/v2"
+	"io"
+	"io/ioutil"
+	"net"
+	"os"
+	"strings"
+	"time"
+)
+
+const HeadSize int = 4
+func initServer(network,addr string) net.Listener {
+
+		listener,err := net.Listen(network,addr)
+		if err != nil {
+			fmt.Println("Listener for",addr)
+		}
+
+		return listener
+}
+
+func testServer(listener net.Listener) {
+	defer listener.Close()
+	for {
+		unixConn, err := listener.Accept()
+		if err != nil {
+			continue
+			//return
+		}
+
+		fmt.Println("A client connected : " + unixConn.RemoteAddr().String())
+		unixPipe(unixConn)
+	}
+}
+
+func unixPipe(conn io.ReadWriteCloser) {
+	defer conn.Close()
+	buf := make([]byte,1024*1024*10)
+
+	for {
+		conn.Read(buf[:HeadSize])
+		payloadLength := binary.LittleEndian.Uint32(buf)
+		length,err := conn.Read(buf[HeadSize : HeadSize+int(payloadLength)])
+		if err != nil {
+			if err == io.EOF {
+				fmt.Println("read from client error=", err, "need to read len=", payloadLength)
+			} else {
+				fmt.Println("client disconnected=", err, "need to read len=", payloadLength)
+			}
+			return
+		}
+
+		buf[0] = '@'
+		buf[1] = '#'
+		conn.Write(buf[:HeadSize+length])
+		fmt.Println(time.Now(),"received len=",length)
+	}
+}
+
+func initClient(network,addr string) io.ReadWriteCloser{
+	conn, err := net.Dial(network, addr)
+	if err != nil {
+		fmt.Println("dialUnix err=", err)
+	}
+
+	fmt.Println("connected!")
+
+	return conn
+}
+
+func testClient(conn io.ReadWriteCloser,content []byte,count int)  {
+
+	data := make([]byte, HeadSize+len(content))
+
+	dataLength := uint32(len(content))
+
+	binary.LittleEndian.PutUint32(data,dataLength)
+
+	copy(data[HeadSize:], content)
+
+	fmt.Println("client will send",data)
+
+	buf := make([]byte,1024*1024*10)
+	var max,sum time.Duration
+	var min = time.Second * 100
+
+	for i := 0; i < count;i++ {
+		begin := time.Now()
+		conn.Write(data)
+		length, err := conn.Read(buf[:len(data)])
+		if err != nil {
+			fmt.Println("read from server, error=",err)
+			return
+		}
+
+		elapsed := time.Since(begin)
+		if max < elapsed {
+			max = elapsed
+		}
+
+		if min > elapsed {
+			min = elapsed
+		}
+
+		sum += elapsed
+
+		fmt.Println("read use ",elapsed,"length=",length,buf[0],buf[1])
+		time.Sleep(time.Millisecond *100)
+	}
+
+	ave := time.Duration(int64(sum) / 1000)
+	fmt.Println("total use ","max=",max,"min=",min,"ave=",ave)
+}
+
+func main() {
+	// Declare the flags to be used
+	helpFlag := getopt.Bool('h', "display help")
+	serverFlag := getopt.BoolLong("server", 's', "", "the command")
+	addrString := getopt.StringLong("address", 'a', "/tmp/unix_sock", "address")
+	countFlag := getopt.IntLong("count", 'c',1,"test count of loop")
+	textFlag := getopt.StringLong("text", 't',"00112233445566778899","text to send")
+	fileFlag := getopt.StringLong("file", 'f',"","read data from file to send")
+	//repeatFlag := getopt.StringLong("retransmit", 'r',"","address for retransmit data to next node")
+
+	//:= getopt.BoolLong("server", 's', "", "the command")
+
+	// Parse the program arguments
+	getopt.Parse()
+	// Get the remaining positional parameters
+	//args := getopt.Args()
+	if *helpFlag {
+		getopt.PrintUsage(os.Stdout)
+		return
+	}
+
+	var network string
+	isUnixDomain := strings.ContainsRune(*addrString,'/')
+	if !isUnixDomain {
+		network = "tcp"
+	} else {
+		network = "unix"
+		if *serverFlag {
+			os.Remove(*addrString)
+		}
+	}
+
+	sendContent := []byte(*textFlag)
+	fmt.Println("It will use :",network,*addrString)
+	if len(*fileFlag) > 0 {
+		f , err := os.Open(*fileFlag)
+		if err != nil {
+			fmt.Println("open file",*fileFlag,err)
+			return
+		}
+
+		sendContent,err = ioutil.ReadAll(f)
+
+		if err != nil {
+			fmt.Println("read file",*fileFlag,err)
+			return
+		}
+	}
+
+	if *serverFlag {
+		listener := initServer(network,*addrString)
+		defer listener.Close()
+		testServer(listener)
+	} else {
+		conn := initClient(network,*addrString)
+		defer conn.Close()
+		testClient(conn,sendContent,*countFlag)
+	}
+}