HTTP/1.1 206 Partial Content
Host: localhost
Content-Type: multipart/byteranges; boundary=dfgksjdfgk
--vcbxcvbxbn---
Content-Type: text/plain
Content-Range: bytes 0-9/9
some text
--dfgksjdfgk
Content-Type: text/plain
Content-Range: bytes 0-12/12
another text
--dfgksjdfgk------