fix: http download retries too many times (#849)

internal/protocol/http/timeout_reader_test.go

@@ -0,0 +1,51 @@
+package http
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"io"
+	"testing"
+	"time"
+)
+
+func TestTimeoutReader_Read(t *testing.T) {
+	data := []byte("Hello, World!")
+	reader := bytes.NewReader(data)
+	timeoutReader := NewTimeoutReader(reader, 1*time.Second)
+
+	buf := make([]byte, len(data))
+	n, err := timeoutReader.Read(buf)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	if n != len(data) {
+		t.Fatalf("expected to read %d bytes, read %d", len(data), n)
+	}
+	if !bytes.Equal(buf, data) {
+		t.Fatalf("expected %s, got %s", data, buf)
+	}
+}
+
+func TestTimeoutReader_ReadTimeout(t *testing.T) {
+	reader := &slowReader{delay: 2 * time.Second}
+	timeoutReader := NewTimeoutReader(reader, 1*time.Second)
+
+	buf := make([]byte, 8192)
+	_, err := timeoutReader.Read(buf)
+	if err == nil {
+		t.Fatal("expected timeout error, got nil")
+	}
+	if !errors.Is(err, context.DeadlineExceeded) {
+		t.Fatalf("expected %v, got %v", context.DeadlineExceeded, err)
+	}
+}
+
+type slowReader struct {
+	delay time.Duration
+}
+
+func (sr *slowReader) Read(p []byte) (n int, err error) {
+	time.Sleep(sr.delay)
+	return 0, io.EOF
+}