diff --git a/includes/kore.h b/includes/kore.h
index 484727e..41e6180 100644
--- a/includes/kore.h
+++ b/includes/kore.h
@@ -181,6 +181,7 @@ void		kore_buf_append(struct kore_buf *, u_int8_t *, u_int32_t);
 u_int8_t	*kore_buf_release(struct kore_buf *, u_int32_t *);
 void	kore_buf_appendf(struct kore_buf *, const char *, ...);
 void	kore_buf_appendv(struct kore_buf *, struct buf_vec *, u_int16_t);
+void	kore_buf_appendb(struct kore_buf *, struct kore_buf *);
 
 struct spdy_header_block	*spdy_header_block_create(int);
 struct spdy_stream	*spdy_stream_lookup(struct connection *, u_int32_t);
diff --git a/src/buf.c b/src/buf.c
index d6e2c3c..fa1547b 100644
--- a/src/buf.c
+++ b/src/buf.c
@@ -62,6 +62,16 @@ kore_buf_append(struct kore_buf *buf, u_int8_t *d, u_int32_t len)
 	buf->offset += len;
 }
 
+void
+kore_buf_appendb(struct kore_buf *buf, struct kore_buf *src)
+{
+	u_int8_t	*d;
+	u_int32_t	len;
+
+	d = kore_buf_release(src, &len);
+	kore_buf_append(buf, d, len);
+}
+
 void
 kore_buf_appendv(struct kore_buf *buf, struct buf_vec *v, u_int16_t count)
 {