def decode_chunked_transfer(chunked_body):
    """Parsed body received with chunked transfer encoding, and return the
    decoded body.

    For more info see:
    https://en.wikipedia.org/wiki/Chunked_transfer_encoding

    """
    body, h, t = '', '', chunked_body
    while t:
        h, t = t.split('\r\n', 1)
        if h == '0':
            break
        size = int(h, 16)
        body += t[:size]
        t = t[size+2:]
    return body