Go Systems Programming

A Unix socket client

The name of the Unix socket client program is socketClient.go and will be presented in four parts.

The first part of the utility contains the expected preamble:

package main 
 
import ( 
   "fmt" 
   "io" 
   "log" 
   "net" 
   "os" 
   "time" 
) 

There is nothing special here, just the required Go packages. The second portion contains the definition of a Go function:

func readSocket(r io.Reader) { 
   buf := make([]byte, 1024) 
   for { 
         n, err := r.Read(buf[:]) 
         if err != nil { 
               fmt.Println(err) 
               return 
         } 
         fmt.Println("-> ", string(buf[0:n])) 
   } 
} 

The readSocket() function reads the data from a socket file using Read(). Note that, although socketClient.go just reads from the socket file, the socket is bisectional, which means that you can also write to it. ...