Go program to use Watson

gowatson.go

package main

import (
        "fmt"
        "io"
        "log"
        "net/http"
        "os"
)

func main() {
        myurl := fmt.Sprintf("https://stream.watsonplatform.net/text-to-speech/api/v1/synthesize?accept=audio/wav&voice=en-GB_KateVoice&text=The+Go+programming+language+rocks!")

        // Create file to store the .wav file
        output, err := os.Create("talk.wav")
        if err != nil {
                log.Fatal("Create: ", err)
                return
        }
        defer output.Close()

        // Build the request
        req, err := http.NewRequest("GET", myurl, nil)
        if err != nil {
                log.Fatal("NewRequest: ", err)
                return
        }        

        // https://golang.org/pkg/net/http/#Request.SetBasicAuth
        // SetBasicAuth sets the request's Authorization header to 
        // use HTTP Basic Authentication with the provided username and password.
        req.SetBasicAuth("your username", "your password")
        
        // For control over HTTP client headers,
        // redirect policy, and other settings,
        // create a Client
        // A Client is an HTTP client
        client := &http.Client{}

        // Send the request via a client
        // Do sends an HTTP request and
        // returns an HTTP response
        resp, err := client.Do(req)
        if err != nil {
                log.Fatal("Do: ", err)
                return
        }
        
        // Callers should close resp.Body
        // when done reading from it
        // Defer the closing of the body
        defer resp.Body.Close()       
        
        if _, err := io.Copy(output, resp.Body); err != nil {
                log.Fatal("Copy: ", err)
                return
        }

        fmt.Println("File talk.wav downloaded.")
}