Guarantee that (*Response).Body is non-nil

examples/client.go

@@ -76,17 +76,18 @@ func main() {
 
 	resp, err := client.Do(req)
 	if err != nil {
-		log.Fatal(err)
+		fmt.Println(err)
+		os.Exit(1)
 	}
+	defer resp.Body.Close()
 
 	if resp.Status.Class() == gemini.StatusClassSuccess {
-		defer resp.Body.Close()
 		body, err := ioutil.ReadAll(resp.Body)
 		if err != nil {
 			log.Fatal(err)
 		}
 		fmt.Print(string(body))
 	} else {
-		log.Fatalf("request failed: %d %s: %s", resp.Status, resp.Status.Message(), resp.Meta)
+		fmt.Printf("request failed: %d %s: %s", resp.Status, resp.Status.Message(), resp.Meta)
 	}
 }

response.go

@@ -2,8 +2,10 @@ package gemini
 
 import (
 	"bufio"
+	"bytes"
 	"crypto/tls"
 	"io"
+	"io/ioutil"
 	"strconv"
 )
 
@@ -19,6 +21,7 @@ type Response struct {
 	Meta string
 
 	// Body contains the response body for successful responses.
+	// Body is guaranteed to be non-nil.
 	Body io.ReadCloser
 
 	// Request is the request that was sent to obtain this response.
@@ -83,6 +86,8 @@ func (resp *Response) read(rc io.ReadCloser) error {
 
 	if resp.Status.Class() == StatusClassSuccess {
 		resp.Body = newReadCloserBody(br, rc)
+	} else {
+		resp.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
 	}
 	return nil
 }