added Socket::sendx() that accept a buffer vector and a destination address

qse/include/qse/si/Socket.hpp

@@ -109,6 +109,7 @@ public:
 	int sendx (const void* buf, qse_size_t len, qse_size_t* total_sent = QSE_NULL) QSE_CPP_NOEXCEPT;
 	int sendx (const void* buf, qse_size_t len, const SocketAddress& dstaddr, qse_size_t* total_sent = QSE_NULL) QSE_CPP_NOEXCEPT;
 	int sendx (qse_ioptl_t* vec, int count, qse_size_t* total_sent = QSE_NULL) QSE_CPP_NOEXCEPT;
+	int sendx (qse_ioptl_t* vec, int count, const SocketAddress& dstaddr, qse_size_t* total_sent = QSE_NULL) QSE_CPP_NOEXCEPT;
 
 	qse_ssize_t receive (void* buf, qse_size_t len) QSE_CPP_NOEXCEPT;
 	qse_ssize_t receive (void* buf, qse_size_t len, SocketAddress& srcaddr) QSE_CPP_NOEXCEPT;

qse/lib/si/Socket.cpp

@@ -627,6 +627,101 @@ int Socket::sendx (qse_ioptl_t* iov, int count, qse_size_t* total_sent) QSE_CPP_
 #endif
 }
 
+int Socket::sendx (qse_ioptl_t* iov, int count, const SocketAddress& dstaddr, qse_size_t* total_sent) QSE_CPP_NOEXCEPT
+{
+	QSE_ASSERT (qse_is_sck_valid(this->handle));
+
+#if defined(HAVE_SENDMSG)
+	int index = 0;
+	qse_size_t total = 0;
+	int backup_index = -1;
+	qse_ioptl_t backup;
+
+	struct msghdr msg;
+	QSE_MEMSET (&msg, 0, QSE_SIZEOF(msg));
+	msg.msg_name = (void*)dstaddr.getAddrPtr();
+	msg.msg_namelen = dstaddr.getAddrSize();
+
+	while (1)
+	{
+		ssize_t nwritten;
+
+		msg.msg_iov = (struct iovec*)&iov[index];
+		msg.msg_iovlen = count - index;
+		nwritten = ::sendmsg(this->handle, &msg, 0);
+		if (nwritten <= -1)
+		{
+			this->setErrorCode (syserr_to_errnum(errno));
+			if (backup_index >= 0) iov[backup_index] = backup;
+			if (total_sent) *total_sent = total; 
+			return -1;
+		}
+
+		total += nwritten;
+
+		while (index < count && (qse_size_t)nwritten >= iov[index].len)
+			nwritten -= iov[index++].len;
+
+		if (index == count) break;
+
+		if (backup_index != index)
+		{
+			if (backup_index >= 0) iov[backup_index] = backup;
+			backup = iov[index];
+			backup_index = index;
+		}
+
+		iov[index].ptr = (void*)((qse_uint8_t*)iov[index].ptr + nwritten);
+		iov[index].len -= nwritten;
+	}
+
+	if (backup_index >= 0) iov[backup_index] = backup;
+	if (total_sent) *total_sent = total; 
+	return 0;
+
+#else
+	qse_ioptl_t* v, * ve;
+	qse_size_t total = 0, pos, rem;
+	ssize_t nwritten;
+
+	v = iov;
+	ve = v + count;
+
+	while (v < ve)
+	{
+		if (v->len <= 0) 
+		{
+			v++;
+			continue;
+		}
+
+		pos = 0;
+		rem = v->len;
+	write_again:
+		nwritten = ::sendto(this->handle, (qse_uint8_t*)v->ptr + pos, rem, 0);
+		if (nwritten <= -1) 
+		{
+			this->setErrorCode (syserr_to_errnum(errno));
+			if (total_sent) *total_sent = total; 
+			return -1;
+		}
+
+		total += nwritten;
+		if ((qse_size_t)nwritten < rem)
+		{
+			pos += nwritten;
+			rem -= nwritten;
+			goto write_again;
+		}
+
+		v++;
+	}
+
+	if (total_sent) *total_sent = total; 
+	return 0;
+#endif
+}
+
 qse_ssize_t Socket::receive (void* buf, qse_size_t len) QSE_CPP_NOEXCEPT
 {
 	QSE_ASSERT (qse_is_sck_valid(this->handle));

qse/lib/si/SocketAddress.cpp

@@ -75,22 +75,12 @@
 #endif
 
 
-#if defined(AF_INET)
+#define FAMILY(x) (((struct sockaddr*)(x))->sa_family)
-#	define FAMILY(x) (((struct sockaddr_in*)(x))->sin_family)
-#elif defined(AF_INET6)
-#	define FAMILY(x) (((struct sockaddr_in6*)(x))->sin6_family)
-#elif defined(AF_UNIX)
-#	define FAMILY(x) (((struct sockaddr_un*)(x))->sun_family)
-#else
-#	define FAMILY(x) (-1)
-#endif
 
-#include <stdio.h>
 /////////////////////////////////
 QSE_BEGIN_NAMESPACE(QSE)
 /////////////////////////////////
 
-
 SocketAddress::SocketAddress () QSE_CPP_NOEXCEPT
 {
 	QSE_MEMSET (&this->skad, 0, QSE_SIZEOF(this->skad));