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| author | Pieter Wuille <pieter.wuille@gmail.com> | 2012-01-04 23:39:45 +0100 |
|---|---|---|
| committer | Pieter Wuille <pieter.wuille@gmail.com> | 2012-02-24 13:41:04 +0100 |
| commit | 5fee401fe14aa6459428a26a82f764db70a6a0b9 (patch) | |
| tree | 7920219dabcdd335a7432aa05081d168c98dbf06 /src/netbase.cpp | |
| parent | 8c12851ed497797684588e09637d80a5abd5725e (diff) | |
CAddrMan: stochastic address manager
Design goals:
* Only keep a limited number of addresses around, so that addr.dat does not grow without bound.
* Keep the address tables in-memory, and occasionally write the table to addr.dat.
* Make sure no (localized) attacker can fill the entire table with his nodes/addresses.
See comments in addrman.h for more detailed information.
Diffstat (limited to 'src/netbase.cpp')
| -rw-r--r-- | src/netbase.cpp | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/netbase.cpp b/src/netbase.cpp index 7799a65972..baf7c412a0 100644 --- a/src/netbase.cpp +++ b/src/netbase.cpp @@ -519,15 +519,22 @@ bool CNetAddr::GetIn6Addr(struct in6_addr* pipv6Addr) const std::vector<unsigned char> CNetAddr::GetGroup() const { std::vector<unsigned char> vchRet; - int nClass = 0; // 0=IPv6, 1=IPv4, 255=unroutable + int nClass = 0; // 0=IPv6, 1=IPv4, 254=local, 255=unroutable int nStartByte = 0; int nBits = 16; - // for unroutable addresses, each address is considered different + // all local addresses belong to the same group + if (IsLocal()) + { + nClass = 254; + nBits = 0; + } + + // all unroutable addresses belong to the same group if (!IsRoutable()) { nClass = 255; - nBits = 128; + nBits = 0; } // for IPv4 addresses, '1' + the 16 higher-order bits of the IP // includes mapped IPv4, SIIT translated IPv4, and the well-known prefix |