twisterd 0.9.30: random listening port.

binds to a random port on init (unless specified by command line -port=28333 etc).
twisterd will memorize the port used last time so reinitializations/reboots won't mess with seeders' directories.

src/clientversion.h

@@ -8,7 +8,7 @@
 // These need to be macros, as version.cpp's and bitcoin-qt.rc's voodoo requires it
 #define CLIENT_VERSION_MAJOR       0
 #define CLIENT_VERSION_MINOR       9
-#define CLIENT_VERSION_REVISION    29
+#define CLIENT_VERSION_REVISION    30
 #define CLIENT_VERSION_BUILD       0
 
 // Set to true for release, false for prerelease or test build

src/init.cpp

@@ -576,6 +576,10 @@ bool AppInit2(boost::thread_group& threadGroup)
             return InitError(_("twisterwallet.dat corrupt, salvage failed"));
     }
 
+    // ********************************************************* Step 5 1/2: preinit twister/torrent before network
+
+    preinitSessionTorrent();
+
     // ********************************************************* Step 6: network initialization
 
     RegisterNodeSignals(GetNodeSignals());

src/net.cpp

@@ -77,6 +77,8 @@ CCriticalSection cs_setservAddNodeAddresses;
 vector<std::string> vAddedNodes;
 CCriticalSection cs_vAddedNodes;
 
+int portUsedLastTime = 0;
+
 static CSemaphore *semOutbound = NULL;
 
 // Signals for message handling
@@ -91,7 +93,14 @@ void AddOneShot(string strDest)
 
 unsigned short GetListenPort()
 {
-    return (unsigned short)(GetArg("-port", Params().GetDefaultPort()));
+    int64 portFromArg = GetArg("-port", 0);
+    if( portFromArg )
+        return (unsigned short)portFromArg;
+    if( !portUsedLastTime ) {
+        //portUsedLastTime = Params().GetDefaultPort();
+        portUsedLastTime = 1024 + GetRand(30000);
+    }
+    return (unsigned short)portUsedLastTime;
 }
 
 // find 'best' local address for a particular peer

src/net.h

@@ -100,7 +100,7 @@ extern limitedmap<CInv, int64> mapAlreadyAskedFor;
 extern std::vector<std::string> vAddedNodes;
 extern CCriticalSection cs_vAddedNodes;
 
-
+extern int portUsedLastTime;
 
 
 class CNodeStats

src/twister.cpp

@@ -71,6 +71,9 @@ static std::map<std::string,GroupChat> m_groups;
 static CCriticalSection cs_seenHashtags;
 static std::map<std::string,double> m_seenHashtags;
 
+static bool generateOpt = 0;
+static int genproclimit = 1;
+
 const double hashtagHalfLife      = 8*60*60;    // Halve votes within 8 hours (sec)
 const double hashtagExpiration    = 7*24*60*60; // Remove a hashtag from the list after ~ hashtagExpiration*count (sec)
 const int    hashtagTimerInterval = 60;         // Timer interval (sec)
@@ -217,6 +220,7 @@ int saveGlobalData(std::string const& filename)
     int genproclimit = GetArg("-genproclimit", -1);
     if( genproclimit > 0 )
         globalDict["genproclimit"]  = genproclimit;
+    globalDict["portUsedLastTime"]  = GetListenPort();
 
     std::vector<char> buf;
     bencode(std::back_inserter(buf), globalDict);
@@ -241,16 +245,9 @@ int loadGlobalData(std::string const& filename)
             if( sendSpamMsg.size() ) strSpamMessage = sendSpamMsg;
             string sendSpamUser   = userDict.dict_find_string_value("sendSpamUser");
             if( sendSpamUser.size() ) strSpamUser = sendSpamUser;
-            bool generate         = userDict.dict_find_int_value("generate");
-            int genproclimit      = userDict.dict_find_int_value("genproclimit");
-
-            if( generate ) {
-                Array params;
-                params.push_back( generate );
-                if( genproclimit > 0 )
-                    params.push_back( genproclimit );
-                setgenerate(params, false);
-            }
+            generateOpt           = userDict.dict_find_int_value("generate");
+            genproclimit          = userDict.dict_find_int_value("genproclimit");
+            portUsedLastTime      = userDict.dict_find_int_value("portUsedLastTime");
 
             return 0;
         }
@@ -267,7 +264,6 @@ void ThreadWaitExtIP()
     SimpleThreadCounter threadCounter(&cs_twister, &m_threadsToJoin, "wait-extip");
 
     std::string ipStr;
-
     // wait up to 10 seconds for bitcoin to get the external IP
     for( int i = 0; i < 20; i++ ) {
         const CNetAddr paddrPeer("8.8.8.8");
@@ -398,8 +394,13 @@ void ThreadWaitExtIP()
             break;
     }
     
-    boost::filesystem::path globalDataPath = GetDataDir() / GLOBAL_DATA_FILE;
-    loadGlobalData(globalDataPath.string());
+    if( generateOpt ) {
+        Array params;
+        params.push_back( generateOpt );
+        if( genproclimit > 0 )
+            params.push_back( genproclimit );
+        setgenerate(params, false);
+    }
 
     std::set<std::string> torrentsToStart;
     {
@@ -933,6 +934,12 @@ void ThreadHashtagsAging()
     }
 }
 
+void preinitSessionTorrent()
+{
+    boost::filesystem::path globalDataPath = GetDataDir() / GLOBAL_DATA_FILE;
+    loadGlobalData(globalDataPath.string());
+}
+
 void startSessionTorrent(boost::thread_group& threadGroup)
 {
     printf("startSessionTorrent (waiting for external IP)\n");

src/twister.h

@@ -29,6 +29,7 @@ public:
     twister();
 };
 
+void preinitSessionTorrent();
 void startSessionTorrent(boost::thread_group& threadGroup);
 void stopSessionTorrent();