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WIP - maxcoin-seeder - WORK IN PROGRESS
Latest commit 22cc874
Mar 27, 2014
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maxcoin-seeder ============== maxcoin-seeder is a crawler for the MaxCoin network, which exposes a list of reliable nodes via a built-in DNS server. It is a fork of 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 24 threads simultaneously). USAGE ----- 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 ;; ANSWER SECTION 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-mail address (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.