Merge #8208: Do not set extra flags for unfiltered DNS seed results

bc0a895 Do not set extra flags for unfiltered DNS seed results (Pieter Wuille)

Author: laanwj

src/chainparams.cpp

@@ -16,14 +16,6 @@
 
 #include "chainparamsseeds.h"
 
-std::string CDNSSeedData::getHost(uint64_t requiredServiceBits) const {
-    //use default host for non-filter-capable seeds or if we use the default service bits (NODE_NETWORK)
-    if (!supportsServiceBitsFiltering || requiredServiceBits == NODE_NETWORK)
-        return host;
-    
-    return strprintf("x%x.%s", requiredServiceBits, host);
-}
-
 static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
 {
     CMutableTransaction txNew;

src/chainparams.h

@@ -13,11 +13,9 @@
 
 #include <vector>
 
-class CDNSSeedData {
-public:
+struct CDNSSeedData {
     std::string name, host;
     bool supportsServiceBitsFiltering;
-    std::string getHost(uint64_t requiredServiceBits) const;
     CDNSSeedData(const std::string &strName, const std::string &strHost, bool supportsServiceBitsFilteringIn = false) : name(strName), host(strHost), supportsServiceBitsFiltering(supportsServiceBitsFilteringIn) {}
 };
 

src/net.cpp

@@ -1415,6 +1415,18 @@ void MapPort(bool)
 
 
 
+static std::string GetDNSHost(const CDNSSeedData& data, ServiceFlags* requiredServiceBits)
+{
+    //use default host for non-filter-capable seeds or if we use the default service bits (NODE_NETWORK)
+    if (!data.supportsServiceBitsFiltering || *requiredServiceBits == NODE_NETWORK) {
+        *requiredServiceBits = NODE_NETWORK;
+        return data.host;
+    }
+
+    return strprintf("x%x.%s", *requiredServiceBits, data.host);
+}
+
+
 void ThreadDNSAddressSeed()
 {
     // goal: only query DNS seeds if address need is acute
@@ -1441,7 +1453,7 @@ void ThreadDNSAddressSeed()
             std::vector<CNetAddr> vIPs;
             std::vector<CAddress> vAdd;
             ServiceFlags requiredServiceBits = nRelevantServices;
-            if (LookupHost(seed.getHost(requiredServiceBits).c_str(), vIPs, 0, true))
+            if (LookupHost(GetDNSHost(seed, &requiredServiceBits).c_str(), vIPs, 0, true))
             {
                 BOOST_FOREACH(const CNetAddr& ip, vIPs)
                 {