Go Systems Programming

Using other functions for the TCP server

In this subsection, we will develop the functionality of TCPserver.go using some slightly different functions. The name of the new TCP server will be TCPs.go and will be presented in four parts.

The first part of TCPs.go is the following:

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

The second part of the TCP server is the following:

func main() { 
   arguments := os.Args 
   if len(arguments) == 1 { 
         fmt.Println("Please provide a port number!") 
         os.Exit(100) 
   } 
 
   SERVER := "localhost" + ":" + arguments[1] 

So far, there are no differences from the code of TCPserver.go.

The differences start in the third part of TCPs.go, which is the following:

 s, err := net.ResolveTCPAddr("tcp", SERVER) if err != nil { fmt.Println(err) ...