Bitcoin Forum

Bitcoin => Bitcoin Technical Support => Topic started by: hoba on February 09, 2015, 04:27:57 PM



Title: DNS Seeds
Post by: hoba on February 09, 2015, 04:27:57 PM
Hello,

I have looked into the bitcoin source code and a question arises:

Is the implementation of the dns seeds still correct? As far as I can see the dns seeds hard coded in chainparams.cpp are not used.
The function ThreadDNSAddressSeed in net.cpp seems to use them, but the invokation of
LookupHost - LookupIntern - SetSpecial or
CNetAddr -LookupHost - LookupIntern - SetSpecial
in netbase.cpp ends up with SetSpecial which handles Onion/Tor-addresses only. And the hard coded dns seeds are no Onion/Tor-addresses.
Am I right?
Would be glad if anyone confirm this or help me to find my mistake.

PS: Does the question fit better to the bitcoin mailing list?


Title: Re: DNS Seeds
Post by: vm1990 on February 10, 2015, 01:19:34 AM
as far as i know dns seed is only used the very very first time the wallet is used to find a new peer... most alt wallets screw this up and thats why they dont sync until you use addnode.


Title: Re: DNS Seeds
Post by: gmaxwell on March 19, 2015, 01:42:19 AM
They work fine.

2015-03-19 01:40:05 136 addresses found from DNS seeds


Setspecial returns false if the thing being checked is not an onion name and the rest of lookupintern runs normally.