BT insights sharing and common problems

I. Basic concept of TCP/IP

1. IP:

Each computer on the TCP/IP network must have a representative or an address. IP is also divided into private IP (192.168.x.x/10.x.x.x/172.16.x.x~172.31.x.x) and public IP (in addition to a few special IPs, As long as the private IP is not the public IP).

2. Port:

Port can be regarded as the license number of a certain service provided by the TCP/IP network, and it is not important that the code is the value of the service. For example: Port80 represents the service of the Web, port21 represents the service of FTP, My port12345 represents BT's service (not necessarily the same for each person's BT port). The number of ports is exactly how much it is and how fast it is. In the case of BT, when the computer is connected to your computer with your ip:12345, it means that he is asking you to provide BT's loading and unloading services.

3. Protocol for TCP:

Send out the end to send out a packet (information) must wait until the receiving end reply one receives the misleading message (ACK), will continue to send out the next packet, if the delivery end in a certain period of time and wait for the ACK will be re-sent again. For the download of the bandwidth of the ADSL, when the amount of BT download is very large, In addition to the normal loading of the downloaded bandwidth, there will be more reply ACK to the more than the frequency of the frequency of the message. So the bandwidth of the BT can not be too full (unlimited), unless it is not downloaded at the time of the material.



Two. BT Basic concept

The spirit of BT is shared, but the internal human nature of BT "You give me a foot I still you a Zhang" of the machine system, so someone is the main download bandwidth do not limit, self-interest people. I'm not entirely convinced that you will understand the reason when you look at the last paragraph of the TCP agreement.
To the ADSL bandwidth, from the point of increasing the speed of the observation point out, my advice is a lot of time, while reducing the overall speed of the largest spread of the global. Seeds rarely, while increasing the global maximum spread speed, but do not use unlimited, it is more likely to increase the download speed



Three. BT Common noun

1. User (PEER):
Every computer that uses BT software to upload and download information.

2. Seeds (SEED):
Torrent or has been 100% completed download, only uploaded to the user. The more you can use it, the better it is. Because of the high utilization rate of BT software is the other side of the product, and some software to translate the torrent file into a seed, so someone will say "I downloaded xx seeds ..."

3. Share rate:
The ratio of the amount of material/the amount of the material to be transferred is a BT's conscience and does not actually work.

4. Health degree:
The percentage of the user that you are connected to has the complete raw material, health is over 100% even if you are not connected to a seed, you can download it successfully.

5. Priority rate:
The effectiveness of the task of the platoon is clearly obvious, the effect of the mission has been more obvious, high first-rate queue task to download first.

6. Local:
Your active peer, usually installed BT software, can be seen when it is downloaded.

7. Remote Range:
The other peer host connects you, less distant, less connected to the number of high-speed peer/seed and the opportunity, the opposite will reduce the speed of the download.

8. Internet Connectivity:
Two Internet subscribers that do not have a port mapping can also connect to each other via UDP, which is a little helpful for Internet user.

9. Torrent Archives:
.. Torrent is an information file that provides the download of BT, including the file name, size, experience, and the tracker used.

Tracker:
Tracker is a repository that records the torrent file and each peer's ip/port. And so on, each peer must connect to tracker to get the ip/port of the other peer. Information to and from other peer connections.
Tracker's functions only provide the same download task's peer/seed information to each other, and up and down the speed is completely not related. The speed is determined by the interaction between the peer/seed.

11. Internet:
The meaning of BT and the original LAN are slightly different, refers to the use of private IP computers, usually have an installed IP-sharing device.

12. External network:
The meaning of BT is slightly different from the original WAN, which refers to the computer using the public IP.

13. Experience:
is to use a mathematical formula (algorithm) to get a single, irreversible number of numbers for the entire record or file. So two records or files that have the same experience are exactly the same, and it makes sure that your downloaded records or files are exactly the same as the original record or file, and have not been tampered with.
BT will divide the shared files by the size of the torrent at the time of the establishment of the Piece, and for these Piece use the SHA1 algorithm to produce 20Bytes of the experience, each BT software use this experience to check that the Piece has been correctly downloaded/not downloaded.

14. Disk Cache:
is to download the information in the memory, and so the memory of the memory of a certain number or proportion once again to write into the hard disk, in order to reduce the number of hard disk read write, to protect the purpose of the hard disk.

15. Agent Server (proxy):
Proxy has two functions, one is that the temporary storage (cache) can effectively reduce the reuse of Internet resources, usually used in the temporary web page.
Another is the agent of the computer. The computer (BT) is not connected directly to another computer (tracker) to connect to, but through the third computer (proxy), So tracker only recognized proxy ip.tracker to send the information to the proxy and send the information to BT by proxy. In this way, you can hide (change) The IP of the BT computer, and achieve the purpose of bullying cheat fire walls or tracker.



Four. Frequently Asked Questions

Q: Why is my bt not downloading
A:1. Personal computer XP or personal fire wall retainer BT program using the Internet
2. By school, company or social network management Unit block retainer BT program using the Internet
3. Proxy proxies are not tracker
4. Tracker is busy or hanging up or blocking your IP.

Q: Why tracker wait for a long time but can't connect
A:tracker Response error:unregistered torrent in Tracker: some Tracker for
Management, to avoid resources being abuses used or for discard content, will require registration and upload torrent files. If the announcement
Torrent's people did not upload torrent files, tracker would reply to this message and refused to connect the request.
Tracker Return code:400, stop! In Tracker: Could be a problem with BT software, in exchange for a BT
Software to see.
Tracker Return code:403, stop! In Tracker: Was Tracker IP, try to use
Proxy agent server.

Q: Why does someone have more than 100 kb/s on the speed of the download, I only have a bit
A: On the one hand, if possible, the higher the speed of the line, the greater the speed of the machine. On the other hand, in addition to the adjustment
Can reach the high-speed download or the/peer of the child, connected to peer sharing of the bandwidth.
The speed of the download, in addition to the setting is also dependent on the weather (tracker assigned to your peer/seed).

Q: How to adjust the setting
A:1. If you are ADSL user on the BT upload speed than ADSL on the spread of low, if still want to the Internet
You should set the lower, but do not forget to download the spread of the spread of the feedback others, not when the race.
2. Do not download more than one task at a time, preferably at one time. If the download speed is actually
Download the task.
3. Remove the Windows XP fire wall, install another fire wall, or open the Windows XP fire wall BT
Listen to the port.
4. Do not install Windows XP SP2, or use Evid4226patch to adjust TCP/IP Half-open
Connection.
5. If you are a local network user, activate the UPnP port mapping feature (IP-sharing must also be
Support UPnP) or set port mapping on its own in the NAT or virtual server function of the IP-sharing device.
6. Global Maximum upload connection number 2
7. The installation of BT engine may help
8. Finally, a bit of air is needed to connect to the peer/seed of the big bandwidth sharing.

Q: Why doesn't my BT see the remote
The [position] of the A:bitcomet [peer list] If there is no "remote" or Bitspirit [connect] no downward
Yellow arrows, the BitTorrent will appear the yellow light is the fire wall or IP-sharing device does not open BT port.
Here's how to open the BT port:
IP-sharing device:
The port mapping is set in the virtual server function of the IP-sharing device, as follows:
Suppose your IP is 192.168.1.1, BT Port is 10000
server address internal Web Port-based Internet ports
192.168.1.1 10000 TCP 10000

Fire Walls:
Unless you've installed another home's fireproof wall product, it's not a suggestion that you shut down the XP fire walls.
A. A separate fire wall product has been installed for other homes:
1. Double-click on the Internet or regional network, then press (content)
2. Click on the index tag and then cancel (Internet link fire wall)
B. Only XP Fire walls:
1. Double-click on the Internet or regional network, then press (content)
2. Click the index tag (the internet link fire wall) tick, and then click (Set)
3. Click (add) to open the new connector
4. Enter an easy-to-understand name in the (description) block, for example: BT Port 10000 (your BT
Listen port is 10000)
5. Enter in the block (the name or IP address of the computer on which your Internet service is located): 127.0.0.1
6. Enter the port number 10000 in the (external port) and (internal connection) block, most
The same number is used in the case
7. Click (tcp), then click (Make sure)

Q: How to set the IP-sharing device
A: Usually in the IE browser URL to enter the http://192.168.x.x (video IP sharing device), and then enter
Administrator's account password to enter the setting screen, detailed operation please refer to the IP-sharing device to explain the book.

Q: After BT, you can't run a Web page.
A: In order to prevent the spread of the network worm virus, micro-software in Windows XP SP2 to limit the number of waiting connections to 10
, which reduces the speed of the download of peers such as BT, and also allows browsers such as IE to not connect
Open the Web. You can download and execute evid4226patch/l=xxx, XXX is the number you want to change, for example
Evid4226patch/l= 500 (proposed to change to 500), after re-activation to take effect.

Q: Will it hurt the hard drive using BT?
A: No, it doesn't matter if it's not long enough to download at 1mb/s speed.
Just use "Disk cache" and "load Space before downloading" (BitComet's noun), and then periodically re-assemble the hard disk
Just fine.

Q: Download can not be downloaded to 99%
A:1. Stop the download
2. Right-click/re-check integrity (each BT software is different in the same way)
3. If it becomes 100% OK, if it is still 99% then continue to download, this should be successful, or seed has problems.
4. If the movie is available in VLC media player (Little Red Hat), the majority of the format of the movie, except RM/RMVB.
Or use the video to repair the software and then use the general player to watch.

Q: Why does the torrent run out of a yellow sighs and cannot be downloaded?
A: Your download storage path name or file name is: "|<>/\*?" These characters, you can get rid of the download.

Q: Why does Windows 98/me user often download?? 's Files
A: Because Windows 98/me does not support Unicode, try the installation of Unicode to complete the project, which can solve most of the problems.
Http://search.cpatch.org/downloa ... Unicodeaton_240.exe
or switch to Bitspirit
1. Create a pre-stored folder in [archives], for example: XYZ
2. At the beginning of the Torrent archive, select all files, and press [save to]xyz to change the
Folder name. If you select the file, press [save to]XYZ to change the file name.

Q: How to become a seed
A: When the download is complete, don't close the BT and it will become a seed.

Q: How to join tracker to help BT download
A: The advantage of adding a tracker is that it increases the rate of connection to the peer (most of the cases are useless), and the lack of a wave
The more tracker the computer and the bandwidth, the more it will increase the rate of connection to the peer.
Adding a bunch of tracker will sometimes get counter-productive, as long as it's good to join a tracker that doesn't need to be registered.

Q: Why did I download a speed of more than 100 kb/s, but now it becomes 0kb/s
A: Maybe it's just a torrent, there's only one seed in the world, and when you download it at some speed, the biggest
Completion (for example, 20%, others are also 20%), your download speed will quickly drop to 0. When others are done
The degree is higher than the 0.x% you start downloading again. This week and the beginning of the 100%.
Whether or not it depends on whether or not someone else is doing the same as you.

Q: How to set the global maximum upload speed to improve the download speed
A: Please refer to "two. BT basic Concept"

Q: How do I know if my BT port has been opened
A: The simplest way is to see if there is a "distance"

BT insights sharing and common problems