add CIp::GetAddr(), CIp::GetPort(), CIp::SetPort() implementation

original cip.h handles raw value from struct sockaddr_in/sockaddr_in6.
this code follows this, but they should use network byte converter
like ntohs().

src/cip.cpp

@@ -93,6 +93,49 @@ struct sockaddr_storage *CIp::GetSockAddr(socklen_t &len)
     return &m_Addr;
 }
 
+////////////////////////////////////////////////////////////////////////////////////////
+// get and set
+
+uint32 CIp::GetAddr(void) const
+{
+    switch (m_Addr.ss_family)
+    {
+        case AF_INET:
+            return ((struct sockaddr_in *)&m_Addr)->sin_addr.s_addr;
+        default:
+            return 0; /* not supported */
+    }
+}
+
+uint16 CIp::GetPort(void) const
+{
+    switch (m_Addr.ss_family)
+    {
+        case AF_INET:
+            return ((struct sockaddr_in *)&m_Addr)->sin_port;
+        case AF_INET6:
+            return ((struct sockaddr_in6 *)&m_Addr)->sin6_port;
+        default:
+            return 0; /* not supported */
+    }
+}
+
+void CIp::SetPort(uint16 port)
+{
+    switch (m_Addr.ss_family)
+    {
+        case AF_INET:
+            ((struct sockaddr_in *)&m_Addr)->sin_port = port;
+            break;
+        case AF_INET6:
+            ((struct sockaddr_in6 *)&m_Addr)->sin6_port = port;
+            break;
+        default:
+            /* not supported, do nothing */
+            break;
+    }
+}
+
 ////////////////////////////////////////////////////////////////////////////////////////
 // operator