added Socket::send() that accept a data vector

qse/include/qse/si/Makefile.in

@@ -347,6 +347,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@

qse/include/qse/si/Socket.hpp

@@ -103,9 +103,13 @@ public:
 	// underlying system calls
 	qse_ssize_t send (const void* buf, qse_size_t len) QSE_CPP_NOEXCEPT;
 	qse_ssize_t send (const void* buf, qse_size_t len, const SocketAddress& dstaddr) QSE_CPP_NOEXCEPT;
+	qse_ssize_t send (const qse_ioptl_t* vec, int count) QSE_CPP_NOEXCEPT;
+	qse_ssize_t send (const qse_ioptl_t* vec, int count, const SocketAddress& dstaddr) QSE_CPP_NOEXCEPT;
 
 	// The sendx() functions sends data as much as it can, possibly with multiple
-	// underlying system calls. 
+	// underlying system calls. these are useful for stream sockets and may not
+	// be useful for datagram sockets they may split the given data into more than
+	// one packet.
 	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;

qse/lib/si/Socket.cpp

@@ -482,6 +482,67 @@ qse_ssize_t Socket::send (const void* buf, qse_size_t len, const SocketAddress&
 	return n; 
 }
 
+qse_ssize_t Socket::send (const qse_ioptl_t* iov, int count) QSE_CPP_NOEXCEPT
+{
+	QSE_ASSERT (qse_is_sck_valid(this->handle));
+
+#if defined(HAVE_SENDMSG) || defined(HAVE_WRITEV)
+	ssize_t nwritten;
+
+#if defined(HAVE_SENDMSG)
+	struct msghdr msg;
+	QSE_MEMSET (&msg, 0, QSE_SIZEOF(msg));
+	msg.msg_iov = (struct iovec*)iov;
+	msg.msg_iovlen = count;
+	nwritten = ::sendmsg(this->handle, &msg, 0);
+#else
+	nwritten = ::writev(this->handle, (const struct iovec*)iov, count);
+#endif
+	if (nwritten <= -1)
+	{
+		this->setErrorCode (syserr_to_errnum(errno));
+		return -1;
+	}
+
+	return nwritten;
+#else
+	// TODO: combine to a single buffer .... use sendto.... 
+	this->setErrorCode (E_NOIMPL);
+	return -1;
+#endif
+}
+
+qse_ssize_t Socket::send (const qse_ioptl_t* iov, int count, const SocketAddress& dstaddr) QSE_CPP_NOEXCEPT
+{
+	QSE_ASSERT (qse_is_sck_valid(this->handle));
+
+QSE_ASSERT (qse_is_sck_valid(this->handle));
+
+#if defined(HAVE_SENDMSG)
+	ssize_t nwritten;
+
+	struct msghdr msg;
+	QSE_MEMSET (&msg, 0, QSE_SIZEOF(msg));
+	msg.msg_name = (void*)dstaddr.getAddrPtr();
+	msg.msg_namelen = dstaddr.getAddrSize();
+	msg.msg_iov = (struct iovec*)iov;
+	msg.msg_iovlen = count;
+	nwritten = ::sendmsg(this->handle, &msg, 0);
+	if (nwritten <= -1)
+	{
+		this->setErrorCode (syserr_to_errnum(errno));
+		return -1;
+	}
+
+	return nwritten;
+#else
+	// TODO: combine to a single buffer .... use sendto.... 
+	this->setErrorCode (E_NOIMPL);
+	return -1;
+#endif
+	return -1;
+}
+
 int Socket::sendx (const void* buf, qse_size_t len, qse_size_t* total_sent) QSE_CPP_NOEXCEPT
 {
 	QSE_ASSERT (qse_is_sck_valid(this->handle));