separate func

mastodon.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -318,29 +319,9 @@ type Event interface {
 	event()
 }
 
-// StreamingPublic return channel to read events.
+func handleReader(q chan Event, r io.Reader) error {
-func (c *Client) StreamingPublic(ctx context.Context) (chan Event, error) {
-	url, err := url.Parse(c.config.Server)
-	if err != nil {
-		return nil, err
-	}
-	url.Path = path.Join(url.Path, "/api/v1/streaming/public")
-
-	var resp *http.Response
-
-	q := make(chan Event, 10)
-	go func() {
-		defer ctx.Done()
-
-		for {
-			req, err := http.NewRequest("GET", url.String(), nil)
-			if err == nil {
-				req.Header.Set("Authorization", "Bearer "+c.config.AccessToken)
-				resp, err = c.Do(req)
-			}
-			if err == nil {
 	name := ""
-				s := bufio.NewScanner(resp.Body)
+	s := bufio.NewScanner(r)
 	for s.Scan() {
 		line := s.Text()
 		token := strings.SplitN(line, ":", 2)
@@ -364,11 +345,36 @@ func (c *Client) StreamingPublic(ctx context.Context) (chan Event, error) {
 		default:
 		}
 	}
-				resp.Body.Close()
+	return ctx.Err()
-				err = ctx.Err()
+}
+
+// StreamingPublic return channel to read events.
+func (c *Client) StreamingPublic(ctx context.Context) (chan Event, error) {
+	url, err := url.Parse(c.config.Server)
+	if err != nil {
+		return nil, err
+	}
+	url.Path = path.Join(url.Path, "/api/v1/streaming/public")
+
+	var resp *http.Response
+
+	q := make(chan Event, 10)
+	go func() {
+		defer ctx.Done()
+
+		for {
+			req, err := http.NewRequest("GET", url.String(), nil)
+			if err == nil {
+				req.Header.Set("Authorization", "Bearer "+c.config.AccessToken)
+				resp, err = c.Do(req)
+			}
+			if err == nil {
+				err = handleReader(resp.Body)
 				if err == nil {
 					break
 				}
+				resp.Body.Close()
+				return err
 			} else {
 				q <- &ErrorEvent{err}
 			}