diff --git a/asio/include/asio/impl/write.hpp b/asio/include/asio/impl/write.hpp
index b4e447b4..d5b83233 100644
--- a/asio/include/asio/impl/write.hpp
+++ b/asio/include/asio/impl/write.hpp
@@ -17,9 +17,11 @@
 
 #include "asio/buffer.hpp"
 #include "asio/completion_condition.hpp"
+#include "asio/detail/array_fwd.hpp"
 #include "asio/detail/base_from_completion_cond.hpp"
 #include "asio/detail/bind_handler.hpp"
 #include "asio/detail/consuming_buffers.hpp"
+#include "asio/detail/dependent_type.hpp"
 #include "asio/detail/handler_alloc_helpers.hpp"
 #include "asio/detail/handler_invoke_helpers.hpp"
 #include "asio/detail/handler_type_requirements.hpp"
@@ -338,6 +340,168 @@ namespace detail
     WriteHandler handler_;
   };
 
+  template <typename AsyncWriteStream, typename Elem,
+      typename CompletionCondition, typename WriteHandler>
+  class write_op<AsyncWriteStream, boost::array<Elem, 2>,
+      CompletionCondition, WriteHandler>
+    : detail::base_from_completion_cond<CompletionCondition>
+  {
+  public:
+    write_op(AsyncWriteStream& stream, const boost::array<Elem, 2>& buffers,
+        CompletionCondition completion_condition, WriteHandler& handler)
+      : detail::base_from_completion_cond<
+          CompletionCondition>(completion_condition),
+        stream_(stream),
+        buffers_(buffers),
+        total_transferred_(0),
+        handler_(ASIO_MOVE_CAST(WriteHandler)(handler))
+    {
+    }
+
+#if defined(ASIO_HAS_MOVE)
+    write_op(const write_op& other)
+      : detail::base_from_completion_cond<CompletionCondition>(other),
+        stream_(other.stream_),
+        buffers_(other.buffers_),
+        total_transferred_(other.total_transferred_),
+        handler_(other.handler_)
+    {
+    }
+
+    write_op(write_op&& other)
+      : detail::base_from_completion_cond<CompletionCondition>(other),
+        stream_(other.stream_),
+        buffers_(other.buffers_),
+        total_transferred_(other.total_transferred_),
+        handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_))
+    {
+    }
+#endif // defined(ASIO_HAS_MOVE)
+
+    void operator()(const asio::error_code& ec,
+        std::size_t bytes_transferred, int start = 0)
+    {
+      typename asio::detail::dependent_type<Elem,
+          boost::array<asio::const_buffer, 2> >::type bufs = {{
+        asio::const_buffer(buffers_[0]),
+        asio::const_buffer(buffers_[1]) }};
+      std::size_t buffer_size0 = asio::buffer_size(bufs[0]);
+      std::size_t buffer_size1 = asio::buffer_size(bufs[1]);
+      std::size_t n = 0;
+      switch (start)
+      {
+        case 1:
+        n = this->check_for_completion(ec, total_transferred_);
+        for (;;)
+        {
+          bufs[0] = asio::buffer(bufs[0] + total_transferred_, n);
+          bufs[1] = asio::buffer(
+              bufs[1] + (total_transferred_ < buffer_size0
+                ? 0 : total_transferred_ - buffer_size0),
+              n - asio::buffer_size(bufs[0]));
+          stream_.async_write_some(bufs, ASIO_MOVE_CAST(write_op)(*this));
+          return; default:
+          total_transferred_ += bytes_transferred;
+          if ((!ec && bytes_transferred == 0)
+              || (n = this->check_for_completion(ec, total_transferred_)) == 0
+              || total_transferred_ == buffer_size0 + buffer_size1)
+            break;
+        }
+
+        handler_(ec, static_cast<const std::size_t&>(total_transferred_));
+      }
+    }
+
+  //private:
+    AsyncWriteStream& stream_;
+    boost::array<Elem, 2> buffers_;
+    std::size_t total_transferred_;
+    WriteHandler handler_;
+  };
+
+#if defined(ASIO_HAS_STD_ARRAY)
+
+  template <typename AsyncWriteStream, typename Elem,
+      typename CompletionCondition, typename WriteHandler>
+  class write_op<AsyncWriteStream, std::array<Elem, 2>,
+      CompletionCondition, WriteHandler>
+    : detail::base_from_completion_cond<CompletionCondition>
+  {
+  public:
+    write_op(AsyncWriteStream& stream, const std::array<Elem, 2>& buffers,
+        CompletionCondition completion_condition, WriteHandler& handler)
+      : detail::base_from_completion_cond<
+          CompletionCondition>(completion_condition),
+        stream_(stream),
+        buffers_(buffers),
+        total_transferred_(0),
+        handler_(ASIO_MOVE_CAST(WriteHandler)(handler))
+    {
+    }
+
+#if defined(ASIO_HAS_MOVE)
+    write_op(const write_op& other)
+      : detail::base_from_completion_cond<CompletionCondition>(other),
+        stream_(other.stream_),
+        buffers_(other.buffers_),
+        total_transferred_(other.total_transferred_),
+        handler_(other.handler_)
+    {
+    }
+
+    write_op(write_op&& other)
+      : detail::base_from_completion_cond<CompletionCondition>(other),
+        stream_(other.stream_),
+        buffers_(other.buffers_),
+        total_transferred_(other.total_transferred_),
+        handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_))
+    {
+    }
+#endif // defined(ASIO_HAS_MOVE)
+
+    void operator()(const asio::error_code& ec,
+        std::size_t bytes_transferred, int start = 0)
+    {
+      typename asio::detail::dependent_type<Elem,
+          std::array<asio::const_buffer, 2> >::type bufs = {{
+        asio::const_buffer(buffers_[0]),
+        asio::const_buffer(buffers_[1]) }};
+      std::size_t buffer_size0 = asio::buffer_size(bufs[0]);
+      std::size_t buffer_size1 = asio::buffer_size(bufs[1]);
+      std::size_t n = 0;
+      switch (start)
+      {
+        case 1:
+        n = this->check_for_completion(ec, total_transferred_);
+        for (;;)
+        {
+          bufs[0] = asio::buffer(bufs[0] + total_transferred_, n);
+          bufs[1] = asio::buffer(
+              bufs[1] + (total_transferred_ < buffer_size0
+                ? 0 : total_transferred_ - buffer_size0),
+              n - asio::buffer_size(bufs[0]));
+          stream_.async_write_some(bufs, ASIO_MOVE_CAST(write_op)(*this));
+          return; default:
+          total_transferred_ += bytes_transferred;
+          if ((!ec && bytes_transferred == 0)
+              || (n = this->check_for_completion(ec, total_transferred_)) == 0
+              || total_transferred_ == buffer_size0 + buffer_size1)
+            break;
+        }
+
+        handler_(ec, static_cast<const std::size_t&>(total_transferred_));
+      }
+    }
+
+  //private:
+    AsyncWriteStream& stream_;
+    std::array<Elem, 2> buffers_;
+    std::size_t total_transferred_;
+    WriteHandler handler_;
+  };
+
+#endif // defined(ASIO_HAS_STD_ARRAY)
+
   template <typename AsyncWriteStream, typename ConstBufferSequence,
       typename CompletionCondition, typename WriteHandler>
   inline void* asio_handler_allocate(std::size_t size,