5 files changed, 13 insertions, 65 deletions
diff --git a/host/include/uhd/CMakeLists.txt b/host/include/uhd/CMakeLists.txt
index e87f74291..f4fb96786 100644
--- a/host/include/uhd/CMakeLists.txt
+++ b/host/include/uhd/CMakeLists.txt
@@ -26,7 +26,6 @@ INSTALL(FILES
     gain_handler.hpp
     metadata.hpp
     props.hpp
-    shared_iovec.hpp
     time_spec.hpp
     utils.hpp
     wax.hpp
diff --git a/host/include/uhd/device.hpp b/host/include/uhd/device.hpp
index da58d4f85..596a98bc4 100644
--- a/host/include/uhd/device.hpp
+++ b/host/include/uhd/device.hpp
@@ -77,7 +77,7 @@ public:
      * \param buff a buffer pointing to some read-only memory
      * \param metadata data describing the buffer's contents
      * \param the type of data loaded in the buffer (32fc, 16sc)
-     * \return the number of bytes sent
+     * \return the number of samples sent
      */
     virtual size_t send(
         const boost::asio::const_buffer &buff,
@@ -91,7 +91,7 @@ public:
      * \param buff the buffer to fill with IF data
      * \param metadata data to fill describing the buffer
      * \param the type of data to fill into the buffer (32fc, 16sc)
-     * \return the number of bytes received
+     * \return the number of samples received
      */
     virtual size_t recv(
         const boost::asio::mutable_buffer &buff,
diff --git a/host/include/uhd/metadata.hpp b/host/include/uhd/metadata.hpp
index 43b91d1b0..70842e7bc 100644
--- a/host/include/uhd/metadata.hpp
+++ b/host/include/uhd/metadata.hpp
@@ -30,13 +30,17 @@ namespace uhd{
  */
 struct metadata_t{
     uint32_t stream_id;
+    bool has_stream_id;
     time_spec_t time_spec;
+    bool has_time_spec;
     bool start_of_burst;
     bool end_of_burst;
 
     metadata_t(void){
         stream_id = 0;
+        has_stream_id = false;
         time_spec = time_spec_t();
+        has_time_spec = false;
         start_of_burst = false;
         end_of_burst = false;
     }
diff --git a/host/include/uhd/shared_iovec.hpp b/host/include/uhd/shared_iovec.hpp
deleted file mode 100644
index a120e55d5..000000000
--- a/host/include/uhd/shared_iovec.hpp
+++ /dev/null
@@ -1,54 +0,0 @@
-//
-// Copyright 2010 Ettus Research LLC
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-//
-
-#ifndef INCLUDED_UHD_SHARED_IOVEC_HPP
-#define INCLUDED_UHD_SHARED_IOVEC_HPP
-
-#include <boost/shared_array.hpp>
-#include <stdint.h>
-
-namespace uhd{
-
-/*!
- * A shared iovec contains a shared array and its length.
- * Creating a new shared iovec allocates new memory.
- * This memory is freed when all copies are destroyed.
- */
-class shared_iovec{
-public:
-    /*!
-     * Create a shared iovec and allocate memory.
-     * \param len the length in bytes
-     */
-    shared_iovec(size_t len=0);
-
-    /*!
-     * Destroy a shared iovec.
-     * Will not free the memory unless this is the last copy.
-     */
-    ~shared_iovec(void);
-
-    void *base;
-    size_t len;
-
-private:
-    boost::shared_array<uint8_t> _shared_array;
-};
-
-} //namespace uhd
-
-#endif /* INCLUDED_UHD_SHARED_IOVEC_HPP */
diff --git a/host/include/uhd/transport/udp.hpp b/host/include/uhd/transport/udp.hpp
index 07d84e62a..8c6fb096f 100644
--- a/host/include/uhd/transport/udp.hpp
+++ b/host/include/uhd/transport/udp.hpp
@@ -18,7 +18,6 @@
 #include <boost/asio.hpp>
 #include <boost/utility.hpp>
 #include <boost/shared_ptr.hpp>
-#include <uhd/shared_iovec.hpp>
 
 #ifndef INCLUDED_UHD_TRANSPORT_UDP_HPP
 #define INCLUDED_UHD_TRANSPORT_UDP_HPP
@@ -58,18 +57,18 @@ public:
     /*!
      * Receive a buffer. Write into the memory provided.
      * Returns empty when data is not available.
-     * \param buff a mutable buffer to receive into
+     * \param buffs a vector of asio buffers
      * \return the number of bytes received.
      */
-    virtual size_t recv(const boost::asio::mutable_buffer &buff) = 0;
+    virtual size_t recv(const std::vector<boost::asio::mutable_buffer> &buffs) = 0;
 
     /*!
-     * Receive a buffer. The memory is managed internally.
-     * Returns zero when data is not available.
-     * Calling recv will invalidate the buffer of the previous recv.
-     * \return a shared iovec with allocated memory
+     * Receive a buffer. Write into the memory provided.
+     * Returns empty when data is not available.
+     * \param buff a mutable buffer to receive into
+     * \return the number of bytes received.
      */
-    virtual uhd::shared_iovec recv(void) = 0;
+    virtual size_t recv(const boost::asio::mutable_buffer &buff) = 0;
 };
 
 }} //namespace