2 http_send_data() multiple ranges
10 HTTP_RANGE=bytes=0-0,-1
13 http_send_content_type('text/plain');
20 Content-Type: multipart/byteranges; boundary=%d.%d
24 Content-Type: text/plain
25 Content-Range: bytes 0-0/2
29 Content-Type: text/plain
30 Content-Range: bytes 1-1/2