Fall back to oneshot for DNS Seeds which don't support filtering.

This allows us to not have to update the chainparams whenever a
DNS Seed changes its filtering support, as well fixes a bug
introduced in 44407100f where returned nodes will never be
attempted.

1 files changed, 3 insertions, 8 deletions

diff --git a/src/chainparams.h b/src/chainparams.h
index 0d82a998b1..4b62ca526e 100644
--- a/src/chainparams.h
+++ b/src/chainparams.h
@@ -14,12 +14,6 @@
 #include <memory>
 #include <vector>
 
-struct CDNSSeedData {
-    std::string host;
-    bool supportsServiceBitsFiltering;
-    CDNSSeedData(const std::string &strHost, bool supportsServiceBitsFilteringIn) : host(strHost), supportsServiceBitsFiltering(supportsServiceBitsFilteringIn) {}
-};
-
 struct SeedSpec6 {
     uint8_t addr[16];
     uint16_t port;
@@ -71,7 +65,8 @@ public:
     bool MineBlocksOnDemand() const { return fMineBlocksOnDemand; }
     /** Return the BIP70 network string (main, test or regtest) */
     std::string NetworkIDString() const { return strNetworkID; }
-    const std::vector<CDNSSeedData>& DNSSeeds() const { return vSeeds; }
+    /** Return the list of hostnames to look up for DNS seeds */
+    const std::vector<std::string>& DNSSeeds() const { return vSeeds; }
     const std::vector<unsigned char>& Base58Prefix(Base58Type type) const { return base58Prefixes[type]; }
     const std::string& Bech32HRP() const { return bech32_hrp; }
     const std::vector<SeedSpec6>& FixedSeeds() const { return vFixedSeeds; }
@@ -85,7 +80,7 @@ protected:
     CMessageHeader::MessageStartChars pchMessageStart;
     int nDefaultPort;
     uint64_t nPruneAfterHeight;
-    std::vector<CDNSSeedData> vSeeds;
+    std::vector<std::string> vSeeds;
     std::vector<unsigned char> base58Prefixes[MAX_BASE58_TYPES];
     std::string bech32_hrp;
     std::string strNetworkID;