In this recipe, we are going to create a simple TCP server that will accept a connection on localhost:8080. Perform the following steps:

1. Create tcp-server.go and copy the following content:

package main
import 
(
  "log"
  "net"
)
const 
(
  CONN_HOST = "localhost"
  CONN_PORT = "8080"
  CONN_TYPE = "tcp"
)
func main() 
{
  listener, err := net.Listen(CONN_TYPE, CONN_HOST+":"+CONN_PORT)
  if err != nil 
  {
    log.Fatal("Error starting tcp server : ", err)
  }
  defer listener.Close()
  log.Println("Listening on " + CONN_HOST + ":" + CONN_PORT)
  for 
  {
    conn, err := listener.Accept()
    if err != nil 
    {
      log.Fatal("Error accepting: ", err.Error())
    }
    log.Println(conn)
  }
}

2. Run the program with the following command:

$ go run tcp-server.go