@ -1,8 +1,11 @@
@@ -1,8 +1,11 @@
bitcoin -seeder
Twister -seeder
==============
Bitcoin-seeder is a crawler for the Bitcoin network, which exposes a list
of reliable nodes via a built-in DNS server.
Twister-seeder is a crawler for the [Twister ](http://twister.net.co )
([github](https://github.com/miguelfreitas/twister-core)) network,
which exposes a list of reliable nodes via a built-in DNS server.
Code based on [Bitcoin-seeder ](https://github.com/sipa/bitcoin-seeder ).
Features:
* regularly revisits known nodes to check their availability
@ -12,26 +15,32 @@ Features:
@@ -12,26 +15,32 @@ Features:
* keeps statistics over (exponential) windows of 2 hours, 8 hours,
1 day and 1 week, to base decisions on.
* very low memory (a few tens of megabytes) and cpu requirements.
* crawlers run in parallel (by default 24 threads simultaneously).
* crawlers run in parallel (by default 96 threads simultaneously).
USAGE
-----
Using of it is [highly appreciated ](http://twister.net.co/?p=410 ). If you
have a 24×7 machine and you are able to add an special NS record to your domain,
please consider running twister-seeder. Then let @miguelfreitas know
and he will add your domain to the code base.
Assuming you want to run a dns seed on dnsseed.example.com, you will
need an authorative NS record in example.com's domain record, pointing
to for example vps.example.com:
$ dig -t NS dnsseed.example.com
dig -t NS dnsseed.example.com
As answer you should get something like this:
;; ANSWER SECTION
dnsseed.example.com. 86400 IN NS vps.example.com.
> dnsseed.example.com. 86400 IN NS vps.example.com.
On the system vps.example.com, you can now run dnsseed:
./dnsseed -h dnsseed.example.com -n vps.example.com
If you want the DNS server to report SOA records, please provide an
e-mailadres (with the @ part replaced by .) using -m.
e-mailadres (with the @ part replaced by .) using ` -m` .
RUNNING AS NON-ROOT
-------------------
@ -41,7 +50,7 @@ Typically, you'll need root privileges to listen to port 53 (name service).
@@ -41,7 +50,7 @@ Typically, you'll need root privileges to listen to port 53 (name service).
One solution is using an iptables rule (Linux only) to redirect it to
a non-privileged port:
$ iptables -t nat -A PREROUTING -p udp --dport 53 -j REDIRECT --to-port 5353
iptables -t nat -A PREROUTING -p udp --dport 53 -j REDIRECT --to-port 5353
If properly configured, this will allow you to run dnsseed in userspace, using
the -p 5353 option.