added qse_skadrealsize() && SocketAddress::getAddrRealSize()

qse/include/qse/si/SocketAddress.hpp

@@ -61,6 +61,8 @@ public:
 	SocketAddress (const qse_skad_t* skad) QSE_CPP_NOEXCEPT;
 	SocketAddress (const qse_nwad_t* nwad) QSE_CPP_NOEXCEPT;
 
+	bool operator== (const SocketAddress& addr) const QSE_CPP_NOEXCEPT;
+
 	int getFamily () const QSE_CPP_NOEXCEPT;
 
 	qse_skad_t* getAddrPtr() QSE_CPP_NOEXCEPT
@@ -78,6 +80,11 @@ public:
 		return qse_skadsize(&this->skad);
 	}
 
+	int getAddrRealSize () const QSE_CPP_NOEXCEPT
+	{
+		return qse_skadrealsize(&this->skad);
+	}
+
 	int getAddrCapa() const QSE_CPP_NOEXCEPT
 	{
 		return QSE_SIZEOF(this->skad);

qse/include/qse/si/nwad.h

@@ -337,13 +337,25 @@ QSE_EXPORT int qse_skadfamily (
 
 
 /**
- * The qse_skadlength() function returns the socket address size
+ * The qse_skadsize() function returns the socket address size
  * of a given address \a skad.
  */
 QSE_EXPORT int qse_skadsize (
 	const qse_skad_t* skad
 );
 
+/**
+ * The qse_skadrealsize() function returns the socket address size
+ * of a given address \a skad. It differs from qse_skadsize() in that
+ * it returns the size of the actual data instead of the whole address
+ * structure. For example, the null-terminated path in a local domain
+ * socket address may be shorter than the actual path buffer. 
+ */
+QSE_EXPORT int qse_skadrealsize (
+	const qse_skad_t* skad
+);
+
+
 #if defined(__cplusplus)
 }
 #endif

qse/lib/si/SocketAddress.cpp

@@ -104,6 +104,14 @@ SocketAddress::SocketAddress (const qse_nwad_t* nwad) QSE_CPP_NOEXCEPT
 	this->set (nwad);
 }
 
+bool SocketAddress::operator== (const SocketAddress& addr) const QSE_CPP_NOEXCEPT
+{
+	if (this == &addr) return true;
+	if (FAMILY(&this->skad) != FAMILY(&addr.skad)) return false;
+	if (this->getAddrRealSize() != addr.getAddrRealSize()) return false;
+	return QSE_MEMCMP(this->getAddrPtr(), addr.getAddrPtr(), addr.getAddrRealSize()) == 0;
+}
+
 int SocketAddress::getFamily () const QSE_CPP_NOEXCEPT
 {
 	return FAMILY(&this->skad);

qse/lib/si/nwad-skad.c

@@ -287,3 +287,34 @@ int qse_skadsize (const qse_skad_t* skad)
 
 	return 0;
 }
+
+int qse_skadrealsize (const qse_skad_t* skad)
+{
+	sockaddr_t* sa = (sockaddr_t*)skad;
+	QSE_ASSERT (QSE_SIZEOF(*skad) >= QSE_SIZEOF(*sa));
+
+	switch (FAMILY(skad))
+	{
+	#if defined(AF_INET)
+		case AF_INET: return QSE_SIZEOF(sa->in4);
+	#endif
+
+	#if defined(AF_INET6)
+		case AF_INET6: return QSE_SIZEOF(sa->in6);
+	#endif
+
+	#if defined(AF_UNIX)
+		case AF_UNIX:
+		{
+			return QSE_OFFSETOF(struct sockaddr_un, sun_path) + qse_mbslen(sa->un.sun_path);
+		}
+	#endif
+
+	#if defined(AF_PACKET)
+		case AF_PACKET: return QSE_SIZEOF(sa->ll);
+	#endif
+
+	}
+
+	return 0;
+}