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// author : Boris Kolpackov <boris@kolpackov.net>
// $Id$
#include "Reassemble.h"
#include "ace/OS_NS_stdlib.h"
namespace ACE_RMCast
{
Reassemble::
Reassemble (Parameters const& params)
: params_ (params)
{
}
void Reassemble::recv (Message_ptr m)
{
Map::ENTRY* e = 0;
Address from (
static_cast<From const*> (m->find (From::id))->address ());
if (Data const* data = static_cast<Data const*> (m->find (Data::id)))
{
if (Part const* part = static_cast<Part const*> (m->find (Part::id)))
{
if (map_.find (from, e) == -1)
{
// First part of the message.
//
if (part->num () != 1)
{
// We assume that we received NoData for one of the preceding
// fragments. Ignore this one.
return;
}
Data_ptr new_data (new Data (data->buf (),
static_cast<size_t> (data->size ()),
static_cast<size_t> (part->total_size ())));
//std::cerr << "part->total_size (): " << part->total_size () << endl;
map_.bind (from, new_data);
}
else
{
// Next part of the message.
//
if (part->num () == 1)
ACE_OS::abort ();
Data const* data = static_cast<Data const*> (m->find (Data::id));
Data_ptr& new_data = e->int_id_;
ACE_OS::memcpy (new_data->buf () + new_data->size (),
data->buf (),
data->size ());
//std::cerr << "data->size (): " << data->size () << endl
// << "new_data->size (): " << new_data->size () << endl
// << "new_data->capa (): " << new_data->capacity () << endl;
new_data->size (new_data->size () + data->size ());
if (part->num () == part->of ())
{
// Reassembly is complete.
//
if (part->total_size () != new_data->size ())
ACE_OS::abort ();
Message_ptr new_msg (new Message ());
Address to (
static_cast<To const*> (m->find (To::id))->address ());
new_msg->add (Profile_ptr (new To (to)));
new_msg->add (Profile_ptr (new From (from)));
/*
* Heads up... we need to add the new_data to new_msg then
* unbind the entry that maps to new_data, which will decrement
* its reference count. If the bound/refcounted pointer acted
* polymorphically like a regular pointer does, we'd be able to
* just pass new_data to add(Profile_Ptr) and it would work.
* However, Profile_Ptr and Data_Ptr are not compatible, but
* we can use the secret knowledge that both are instances of the
* same template and that the pointers they contain really are
* hierarchically compatible, and do this funky cast to get
* the result we want.
*/
//new_msg->add (*(reinterpret_cast<Profile_ptr*> (&new_data)));
new_msg->add (Profile_ptr (new_data));
map_.unbind (from);
in_->recv (new_msg);
}
}
}
else
{
// Non-fragmented message. Make sure we are in the consistent state
// and forward it up.
//
if (map_.find (from, e) != -1)
ACE_OS::abort ();
in_->recv (m);
}
}
else if (m->find (NoData::id) != 0)
{
if (map_.find (from, e) != -1)
{
// We already received some fragments. Clean everyhting up.
//
map_.unbind (from);
}
in_->recv (m);
}
}
}
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