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Makefile | 12 years ago | |
README.md | 10 years ago | |
bitcoin.cpp | 11 years ago | |
bitcoin.h | 12 years ago | |
combine.pl | 13 years ago | |
compat.h | 13 years ago | |
db.cpp | 9 years ago | |
db.h | 4 years ago | |
dns.c | 9 years ago | |
dns.h | 9 years ago | |
main.cpp | 10 months ago | |
netbase.cpp | 12 years ago | |
netbase.h | 12 years ago | |
protocol.cpp | 11 years ago | |
protocol.h | 11 years ago | |
serialize.h | 13 years ago | |
strlcpy.h | 13 years ago | |
test.pl | 13 years ago | |
uint256.h | 13 years ago | |
util.cpp | 13 years ago | |
util.h | 13 years ago |
README.md
Twister-seeder
Twister-seeder is a crawler for the Twister (github) network, which exposes a list of reliable nodes via a built-in DNS server.
Code based on Bitcoin-seeder.
Features:
- regularly revisits known nodes to check their availability
- bans nodes after enough failures, or bad behaviour
- accepts nodes down to v0.3.19 to request new IP addresses from, but only reports good post-v0.3.24 nodes.
- 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 96 threads simultaneously).
USAGE
Using of it is highly appreciated. 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
As answer you should get something like this:
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
.
RUNNING AS NON-ROOT
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
If properly configured, this will allow you to run dnsseed in userspace, using the -p 5353 option.