Add IPv4/6Address::size member function

include/tins/ip_address.h

@@ -32,10 +32,10 @@
 
 #include <string>
 #include <iosfwd>
+#include <functional>
 #include <stdint.h>
 #include <tins/cxxstd.h>
 #include <tins/macros.h>
-#include <functional>
 
 namespace Tins {
 /**
@@ -182,6 +182,15 @@ public:
      */
     bool is_broadcast() const;
 
+    /**
+     * \brief Returns the size of an IPv4 Address.
+     *
+     * This returns the value of IPv4Address::address_size
+     */
+    size_t size() const {
+        return address_size;
+    }
+    
     /**
      * \brief Writes this address to a std::ostream.
      * 

include/tins/ipv6_address.h

@@ -197,6 +197,15 @@ public:
      */
     bool is_multicast() const;
 
+    /**
+     * \brief Returns the size of an IPv6 Address.
+     *
+     * This returns the value of IPv6Address::address_size
+     */
+    size_t size() const {
+        return address_size;
+    }
+    
     /**
      * \brief Writes this address in hex-notation to a std::ostream.
      * 

tests/src/ip_address_test.cpp

@@ -111,3 +111,8 @@ TEST(IPAddressTest, Mask) {
         IPv4Address("192.255.1.2") & IPv4Address("255.128.0.0")
     );
 }
+
+TEST(IPv4AddressTest, Size) {
+    EXPECT_EQ(4, IPv4Address("127.0.0.1").size());
+    EXPECT_EQ(4, IPv4Address().size());
+}

tests/src/ipv6_address_test.cpp

@@ -124,6 +124,11 @@ TEST(IPv6AddressTest, MaskAddress) {
     );
 }
 
+TEST(IPv6AddressTest, Size) {
+    EXPECT_EQ(16, IPv6Address("dead:beef::1").size());
+    EXPECT_EQ(16, IPv6Address().size());
+}
+
 #if TINS_IS_CXX11
 
 TEST(IPv6AddressTest, HashTest) {