2 http_send_file() first/last byte range
10 HTTP_RANGE=bytes=0-0,-1
13 http_send_content_type("text/plain");
14 http_send_file('data.txt');
20 Content-Type: multipart/byteranges; boundary=%d.%d
24 Content-Type: text/plain
25 Content-Range: bytes 0-0/1010
29 Content-Type: text/plain
30 Content-Range: bytes 1009-1009/1010