[remote-processor] Add context information on failure

BZ: 190038

Remote processor was not displaying information in case of network
read/write error.

Add some error messages to ease debug.

Change-Id: I465062e8cf77f94b3d4d4d0c71338c4630aac276
Signed-off-by: Kevin Rocard <kevinx.rocard@intel.com>
Signed-off-by: Mattijs Korpershoek <mattijsx.korpershoek@intel.com>
diff --git a/remote-processor/Message.h b/remote-processor/Message.h
index 799a525..4f22977 100644
--- a/remote-processor/Message.h
+++ b/remote-processor/Message.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright (c) 2011-2014, Intel Corporation
  * All rights reserved.
  *
@@ -43,8 +43,17 @@
     CMessage();
     virtual ~CMessage();
 
-    // Send/Receive
-    bool serialize(CSocket* pSocket, bool bOut);
+    /** Write or read the message on pSocket.
+     *
+     * @param[in,out] pSocket is the socket on wich IO operation will be made.
+     * @param[in] bOut if true message should be read,
+     *                 if false it should be written.
+     * @param[out] strError on failure, a string explaining the error,
+     *                      on success, undefined.
+     *
+     * @return true on success, false on failure.
+     */
+    bool serialize(CSocket* pSocket, bool bOut, std::string &strError);
 
 protected:
     // Msg Id