Monthly Archives: October 2009
|8 October 2009||Posted by whiztech under Uncategorized|
µTP (uTP) or micro Transport Protocol is a protocol used by bittorrent client. This protocol aims to reduce latency and maximize bandwidth when the latency is not excessive. While normal bittorrent traffic uses Transmission Control Protocol (TCP) to transfer data, bittorrent client that supports uTP is able to transfer data between clients using User Datagram Protocol (UDP). uTP is supposed to improve bittorrent traffic (uTP can possibly avoid traffic shaping) and you should see improvements in your bittorrent download/upload speed when most of the peers use uTP. So far uTP is used by uTorrent and official bittorrent client.
The bt.transp_disposition value will let you control how uTorrent uses normal TCP or uTP for data transportation. The bt.transp_disposition value is interpreted as a bit field and you probably need to learn binary to understand it. As this post is written, the latest uTorrent 2.0 beta build 16666 accepts these values:
- 1 – allows uTorrent to attempt outgoing TCP connections
- 2 – allows uTorrent to attempt outgoing uTP connections
- 4 – allows uTorrent to accept incoming TCP connections
- 8 – allows uTorrent to accept incoming uTP connections
- 16 – tells uTorrent to use the new uTP header. This is an improved communication header, but is not backwards compatible with clients that do not understand it.
Basically, these values can be added together in order to enable the options.
|3 October 2009||Posted by whiztech under Uncategorized|
Recently, 3 of my friends asked me how to burn a DVD image (the ISO file) to a DVD. Basically, a CD/DVD image (ISO) file is a archive file just like 7z, RAR or ZIP. Unlike normal archive file, a CD/DVD image file sometime contains boot code and it is usually a complete sector-by-sector copy of a CD/DVD.
In this post, you will find out how to properly burn a CD/DVD image. I will use the Ubuntu 9.04 CD image as the example. Latest disk burning software should support ISO burning to disk. The keywords to burn ISO file to disk usually sounds like ‘Write image file to disk’, ‘Burn ISO image’ or ‘Burn image’. You can use your favourite CD/DVD burning application as long as it supports burning from CD/DVD image. In this post, I will use CDBurnerXP, a free CD/DVD burning application for Windows.