Add iterators to Buffer

include/cppkafka/buffer.h

@@ -49,8 +49,16 @@ namespace cppkafka {
  */
 class Buffer {
 public:
+    /**
+     * The type of data this buffer points to
+     */
     using DataType = unsigned char;
 
+    /**
+     * The const iterator type
+     */
+    using const_iterator = const DataType*;
+
     /**
      * Constructs an empty buffer
      */
@@ -94,6 +102,16 @@ public:
      */
     size_t get_size() const;
 
+    /**
+     * Gets an iterator to the beginning of this buffer
+     */
+    const_iterator begin() const;
+
+    /**
+     * Gets an iterator to the end of this buffer
+     */
+    const_iterator end() const;
+
     /**
      * Checks whether this is a non empty buffer
      */