Go Systems Programming

Using alternative functions for the TCP client

Once again, we will implement TCPclient.go using some slightly different functions that are provided by the net Go standard package. The name of the new version will be TCPc.go and will be shown in four code segments.

The first part is the following:

package main 
 
import ( 
   "fmt" 
   "net" 
   "os" 
) 

The second code segment of the program is the following:

func main() { 
   arguments := os.Args 
   if len(arguments) == 1 { 
         fmt.Println("Please provide a server:port string!") 
         os.Exit(100) 
   } 
 
   CONNECT := arguments[1] 
   myMessage := "Hello from TCP client!\n" 

This time, we will send a static message to the TCP server.

The third part of TCPc.go is the following:

 tcpAddr, err := net.ResolveTCPAddr("tcp", CONNECT) if ...