Redfish:Dump offload handler implementation using nbd-proxy

This handler transfers data between nbd-client and nbd-server.
basically it invokes nbd-proxy and reads data from socket
and writes on to nbd-client and vice-versa

Change-Id: I429393a5e056647333bf4e148c0df2a5695b2a47
Signed-off-by: Ravi Teja <raviteja28031990@gmail.com>
diff --git a/http/http_connection.h b/http/http_connection.h
index b786175..6d28405 100644
--- a/http/http_connection.h
+++ b/http/http_connection.h
@@ -517,6 +517,10 @@
 
         if (!isInvalidRequest)
         {
+            req->socket = [this, self = shared_from_this()]() -> Adaptor& {
+                return self->socket();
+            };
+
             res.completeRequestHandler = [] {};
             res.isAliveHelper = [this]() -> bool { return isAlive(); };