Enabled keepalive for Windows (>= Vista)

src/base/kernel/Platform.h

@@ -49,6 +49,8 @@ public:
     static inline bool isUserActive(uint64_t ms)    { return idleTime() < ms; }
     static inline const String &userAgent()         { return m_userAgent; }
 
+    static bool hasKeepalive();
+
     static bool isOnBatteryPower();
     static uint64_t idleTime();
 

src/base/kernel/Platform_mac.cpp

@@ -55,6 +55,12 @@ char *xmrig::Platform::createUserAgent()
 }
 
 
+bool xmrig::Platform::hasKeepalive()
+{
+    return true;
+}
+
+
 bool xmrig::Platform::setThreadAffinity(uint64_t cpu_id)
 {
     return true;

src/base/kernel/Platform_unix.cpp

@@ -70,6 +70,12 @@ char *xmrig::Platform::createUserAgent()
 }
 
 
+bool xmrig::Platform::hasKeepalive()
+{
+    return true;
+}
+
+
 #ifndef XMRIG_FEATURE_HWLOC
 #ifdef __DragonFly__
 

src/base/kernel/Platform_win.cpp

@@ -70,6 +70,12 @@ char *xmrig::Platform::createUserAgent()
 }
 
 
+bool xmrig::Platform::hasKeepalive()
+{
+    return winOsVersion().dwMajorVersion >= 6;
+}
+
+
 #ifndef XMRIG_FEATURE_HWLOC
 bool xmrig::Platform::setThreadAffinity(uint64_t cpu_id)
 {