Topic header copy constructor and copy assignment operator.

catkit_core/MessageBroker.cpp

@@ -1,2 +1,28 @@
 #include "MessageBroker.h"
 
+#include "Util.h"
+#include "Timing.h"
+#include "HostName.h"
+
+#include <algorithm>
+
+TopicHeader::TopicHeader(const TopicHeader &header)
+{
+	CopyFrom(header);
+}
+
+TopicHeader &TopicHeader::operator=(const TopicHeader &header)
+{
+	CopyFrom(header);
+
+	return *this;
+}
+
+void TopicHeader::CopyFrom(const TopicHeader &header)
+{
+	next_frame_id.store(header.next_frame_id.load(std::memory_order_relaxed), std::memory_order_relaxed);
+	synchronization = header.synchronization;
+
+	std::copy(header.message_offsets, header.message_offsets + TOPIC_MAX_NUM_MESSAGES, message_offsets);
+	std::copy((char *)header.metadata_keys, (char *)header.metadata_keys + sizeof(metadata_keys), (char *)metadata_keys);
+}