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// author : Boris Kolpackov <boris@kolpackov.net>
#include "ace/OS_Memory.h"
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_stdlib.h"
#include "ace/OS_NS_string.h"
#include "ace/OS_NS_unistd.h"
#include "ace/OS_NS_sys_time.h" // gettimeofday
#include "ace/Unbounded_Queue.h"
#include "ace/Pipe.h"
#include "Stack.h"
#include "Protocol.h"
#include "Bits.h"
#include "Fragment.h"
#include "Reassemble.h"
#include "Acknowledge.h"
#include "Retransmit.h"
#include "Flow.h"
#include "Link.h"
#include "Socket.h"
/*
#include <iostream>
using std::cerr;
using std::endl;
*/
namespace ACE_RMCast
{
class Socket_Impl : protected Element
{
public:
~Socket_Impl ();
Socket_Impl (Address const& a, bool loop, Parameters const& params);
public:
void
send_ (void const* buf, size_t s);
ssize_t
recv_ (void* buf,
size_t s,
ACE_Time_Value const* timeout,
ACE_INET_Addr* from);
ssize_t
size_ (ACE_Time_Value const* timeout);
ACE_HANDLE
get_handle_ ();
private:
//FUZZ: disable check_for_lack_ACE_OS
virtual void recv (Message_ptr m);
//FUZZ: enable check_for_lack_ACE_OS
private:
bool loop_;
Parameters const params_;
Mutex mutex_;
Condition cond_;
ACE_Unbounded_Queue<Message_ptr> queue_;
ACE_Pipe signal_pipe_;
ACE_Auto_Ptr<Fragment> fragment_;
ACE_Auto_Ptr<Reassemble> reassemble_;
ACE_Auto_Ptr<Acknowledge> acknowledge_;
ACE_Auto_Ptr<Retransmit> retransmit_;
ACE_Auto_Ptr<Flow> flow_;
ACE_Auto_Ptr<Link> link_;
};
Socket_Impl::
Socket_Impl (Address const& a, bool loop, Parameters const& params)
: loop_ (loop),
params_ (params),
cond_ (mutex_)
{
fragment_.reset (new Fragment (params_));
reassemble_.reset (new Reassemble (params_));
acknowledge_.reset (new Acknowledge (params_));
retransmit_.reset (new Retransmit (params_));
flow_.reset (new Flow (params_));
link_.reset (new Link (a, params_));
// Start IN stack from top to bottom.
//
in_start (0);
fragment_->in_start (this);
reassemble_->in_start (fragment_.get ());
acknowledge_->in_start (reassemble_.get ());
retransmit_->in_start (acknowledge_.get ());
flow_->in_start (retransmit_.get ());
link_->in_start (flow_.get ());
// Start OUT stack from bottom up.
//
link_->out_start (0);
flow_->out_start (link_.get ());
retransmit_->out_start (flow_.get ());
acknowledge_->out_start (retransmit_.get ());
reassemble_->out_start (acknowledge_.get ());
fragment_->out_start (reassemble_.get ());
out_start (fragment_.get ());
}
Socket_Impl::
~Socket_Impl ()
{
// Stop OUT stack from top to bottom.
//
out_stop ();
fragment_->out_stop ();
reassemble_->out_stop ();
acknowledge_->out_stop ();
retransmit_->out_stop ();
flow_->out_stop ();
link_->out_stop ();
// Stop IN stack from bottom up.
//
link_->in_stop ();
flow_->in_stop ();
retransmit_->in_stop ();
acknowledge_->in_stop ();
reassemble_->in_stop ();
fragment_->in_stop ();
in_stop ();
// Close signal pipe.
//
if (signal_pipe_.read_handle () != ACE_INVALID_HANDLE)
signal_pipe_.close ();
}
void Socket_Impl::
send_ (void const* buf, size_t s)
{
Message_ptr m (new Message);
m->add (Profile_ptr (new Data (buf, s)));
// Qualification is for VC6 and VxWorks.
//
Element::send (m);
}
ssize_t Socket_Impl::
recv_ (void* buf,
size_t s,
ACE_Time_Value const* timeout,
ACE_INET_Addr* from)
{
ACE_Time_Value abs_time;
if (timeout)
abs_time = ACE_OS::gettimeofday () + *timeout;
Lock l (mutex_);
while (queue_.is_empty ())
{
if (timeout)
{
if (cond_.wait (&abs_time) != -1)
break;
}
else
{
if (cond_.wait () != -1)
break;
}
return -1; // errno is already set
}
Message_ptr m;
if (queue_.dequeue_head (m) == -1)
ACE_OS::abort ();
if (queue_.is_empty ())
{
// Remove data from the pipe.
//
if (signal_pipe_.read_handle () != ACE_INVALID_HANDLE)
{
char c;
if (signal_pipe_.recv (&c, 1) != 1)
{
ACE_OS::perror ("read: ");
ACE_OS::abort ();
}
}
}
if (from)
*from = static_cast<From const*> (m->find (From::id))->address ();
if (m->find (NoData::id) != 0)
{
errno = ENOENT;
return -1;
}
Data const* d = static_cast<Data const*>(m->find (Data::id));
ssize_t r (static_cast<ssize_t> (d->size () < s ? d->size () : s));
ACE_OS::memcpy (buf, d->buf (), r);
return r;
}
ssize_t Socket_Impl::
size_ (ACE_Time_Value const* timeout)
{
ACE_Time_Value abs_time;
if (timeout)
abs_time = ACE_OS::gettimeofday () + *timeout;
Lock l (mutex_);
while (queue_.is_empty ())
{
if (timeout)
{
if (cond_.wait (&abs_time) != -1)
break;
}
else
{
if (cond_.wait () != -1)
break;
}
return -1; // errno is already set
}
// I can't get the head of the queue without actually dequeuing
// the element.
//
Message_ptr m;
if (queue_.dequeue_head (m) == -1)
ACE_OS::abort ();
if (queue_.enqueue_head (m) == -1)
ACE_OS::abort ();
if (m->find (NoData::id) != 0)
{
errno = ENOENT;
return -1;
}
Data const* d = static_cast<Data const*>(m->find (Data::id));
return static_cast<ssize_t> (d->size ());
}
ACE_HANDLE Socket_Impl::
get_handle_ ()
{
if (signal_pipe_.read_handle () == ACE_INVALID_HANDLE)
{
signal_pipe_.open ();
}
return signal_pipe_.read_handle ();
}
void Socket_Impl::recv (Message_ptr m)
{
if (m->find (Data::id) != 0 || m->find (NoData::id) != 0)
{
if (!loop_)
{
Address to (static_cast<To const*> (m->find (To::id))->address ());
Address from (
static_cast<From const*> (m->find (From::id))->address ());
if (to == from)
return;
}
Lock l (mutex_);
//if (queue_.size () != 0)
// cerr << "recv socket queue size: " << queue_.size () << endl;
//FUZZ: disable check_for_lack_ACE_OS
bool signal (queue_.is_empty ());
//FUZZ: enable check_for_lack_ACE_OS
queue_.enqueue_tail (m);
if (signal)
{
// Also write to the pipe.
if (signal_pipe_.write_handle () != ACE_INVALID_HANDLE)
{
char c;
if (signal_pipe_.send (&c, 1) != 1)
{
// perror ("write: ");
ACE_OS::abort ();
}
}
cond_.signal ();
}
}
}
// Socket
//
//
Socket::
~Socket ()
{
}
Socket::
Socket (Address const& a, bool loop, Parameters const& params)
: impl_ (new Socket_Impl (a, loop, params))
{
}
void Socket::send (void const* buf, size_t s)
{
impl_->send_ (buf, s);
}
ssize_t Socket::recv (void* buf, size_t s)
{
return impl_->recv_ (buf, s, 0, 0);
}
ssize_t Socket::recv (void* buf, size_t s, ACE_INET_Addr& from)
{
return impl_->recv_ (buf, s, 0, &from);
}
ssize_t Socket::recv (void* buf, size_t s, ACE_Time_Value const& timeout)
{
return impl_->recv_ (buf, s, &timeout, 0);
}
ssize_t Socket::recv (void* buf,
size_t s,
ACE_Time_Value const& timeout,
ACE_INET_Addr& from)
{
return impl_->recv_ (buf, s, &timeout, &from);
}
ssize_t Socket::
size ()
{
return impl_->size_ (0);
}
ssize_t Socket::
size (ACE_Time_Value const& timeout)
{
return impl_->size_ (&timeout);
}
ACE_HANDLE Socket::
get_handle ()
{
return impl_->get_handle_ ();
}
}
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