/
2nd-task.go
69 lines (56 loc) · 1.15 KB
/
2nd-task.go
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package main
import (
"fmt"
"os/exec"
"net"
"bufio"
"io"
"strings"
"bytes"
"log"
)
func main() {
fmt.Println("Launching server...")
ln, err := net.Listen("tcp", ":8081")
if err != nil {
log.Fatal(err)
}
for {
conn, err := ln.Accept()
if err != nil {
log.Fatal(err)
}
go server(conn)
}
}
func server(conn net.Conn) {
// send to 3rd task
conn2, _ :=net.Dial("tcp", "127.0.0.1:8082")
defer conn2.Close()
r := bufio.NewReader(conn)
for {
grepCmd := exec.Command("/usr/bin/grep", "abe")
message, _, err := r.ReadLine()
fmt.Println("Message Received:", string(message))
if err == io.EOF {
break
}
grepCmd.Stdin = strings.NewReader(string(message))
var out bytes.Buffer
grepCmd.Stdout = &out
err2 := grepCmd.Run()
if err2 != nil {
continue
// fmt.Println("err2: ", err2)
}
fmt.Printf("in all caps: %q\n", out.String())
// conn.Write([]byte("from server\n"))
// send message to client
conn.Write([]byte(out.String() + "\n"))
// send message to 3rd-task
fmt.Print("Text to send to 3rd-task\n")
// conn2.Write([]byte(out.String() + "\n"))
conn2.Write([]byte(out.String()))
}
defer conn.Close()
}