A transport abstraction for Multicast dgram sockets. Uses the ACE_SOCK_Dgram_Mcast to send data. More...

#include <MCast.h>

Inheritance diagram for TAO_AV_UDP_MCast_Transport:

Collaboration diagram for TAO_AV_UDP_MCast_Transport:

Public Member Functions
	TAO_AV_UDP_MCast_Transport (void)
	TAO_AV_UDP_MCast_Transport (TAO_AV_UDP_MCast_Flow_Handler *handler)
virtual	~TAO_AV_UDP_MCast_Transport (void)
virtual int	open (ACE_Addr *address)
virtual int	close (void)
virtual int	mtu (void)
	Write the complete Message_Block chain to the connection.
virtual ACE_Addr *	get_peer_addr (void)
	Write the complete Message_Block chain to the connection.
virtual ACE_Addr *	get_local_addr (void)
virtual ssize_t	send (const ACE_Message_Block mblk, ACE_Time_Value s=0)
virtual ssize_t	send (const char buf, size_t len, ACE_Time_Value s=0)
	Write the contents of the buffer of length len to the connection.
virtual ssize_t	send (const iovec iov, int iovcnt, ACE_Time_Value s=0)
	Write the contents of iovcnt iovec's to the connection.
virtual ssize_t	recv (char buf, size_t len, ACE_Time_Value s=0)
	Read len bytes from into buf.
virtual ssize_t	recv (char buf, size_t len, int flags, ACE_Time_Value s=0)
	Read len bytes from into buf using flags.
virtual ssize_t	recv (iovec iov, int iovcnt, ACE_Time_Value s=0)
	Read received data into the iovec buffers.
Protected Attributes
TAO_AV_UDP_MCast_Flow_Handler *	handler_
ACE_INET_Addr	peer_addr_
ACE_INET_Addr	local_addr_

Detailed Description

A transport abstraction for Multicast dgram sockets. Uses the ACE_SOCK_Dgram_Mcast to send data.

Definition at line 32 of file MCast.h.

Constructor & Destructor Documentation

TAO_AV_UDP_MCast_Transport::TAO_AV_UDP_MCast_Transport ( void )

Definition at line 63 of file MCast.cpp.

  :handler_ (0)
{
}

TAO_AV_UDP_MCast_Transport::TAO_AV_UDP_MCast_Transport ( TAO_AV_UDP_MCast_Flow_Handler * handler )

Definition at line 68 of file MCast.cpp.

  :handler_ (handler)
{
}

TAO_AV_UDP_MCast_Transport::~TAO_AV_UDP_MCast_Transport ( void ) [virtual]

Definition at line 73 of file MCast.cpp.

{
}

Member Function Documentation

int TAO_AV_UDP_MCast_Transport::close ( void ) [virtual]

Implements TAO_AV_Transport.

Definition at line 84 of file MCast.cpp.

{
  return 0;
}

ACE_Addr * TAO_AV_UDP_MCast_Transport::get_local_addr ( void ) [virtual]

Reimplemented from TAO_AV_Transport.

Definition at line 97 of file MCast.cpp.

{
  this->handler_->get_mcast_socket ()->get_local_addr (this->local_addr_);
  return &this->local_addr_;
}

ACE_Addr * TAO_AV_UDP_MCast_Transport::get_peer_addr ( void ) [virtual]

Write the complete Message_Block chain to the connection.

Implements TAO_AV_Transport.

Definition at line 91 of file MCast.cpp.

{
  return &this->peer_addr_;
}

int TAO_AV_UDP_MCast_Transport::mtu ( void ) [virtual]

Write the complete Message_Block chain to the connection.

Implements TAO_AV_Transport.

Definition at line 185 of file MCast.cpp.

{
  return ACE_MAX_DGRAM_SIZE;
}

int TAO_AV_UDP_MCast_Transport::open ( ACE_Addr * address ) [virtual]

Implements TAO_AV_Transport.

Definition at line 78 of file MCast.cpp.

{
  return 0;
}

ssize_t TAO_AV_UDP_MCast_Transport::recv	(	char *	buf,
		size_t	len,
		int	flags,
		ACE_Time_Value *	s = `0`
	)			`[virtual]`

Read len bytes from into buf using flags.

Implements TAO_AV_Transport.

Definition at line 200 of file MCast.cpp.

{
  return this->handler_->get_mcast_socket ()->recv (buf,
                                                    len,
                                                    this->peer_addr_,
                                                    flags,
                                                    timeout);
}

ssize_t TAO_AV_UDP_MCast_Transport::recv	(	iovec *	iov,
		int	iovcnt,
		ACE_Time_Value *	s = `0`
	)			`[virtual]`

Read received data into the iovec buffers.

Implements TAO_AV_Transport.

Definition at line 213 of file MCast.cpp.

{
  return handler_->get_mcast_socket ()->recv (iov,this->peer_addr_,0,timeout);
}

ssize_t TAO_AV_UDP_MCast_Transport::recv	(	char *	buf,
		size_t	len,
		ACE_Time_Value *	s = `0`
	)			`[virtual]`

Read len bytes from into buf.

Implements TAO_AV_Transport.

Definition at line 192 of file MCast.cpp.

{
  return this->handler_->get_mcast_socket ()->recv (buf, len,this->peer_addr_);
}

ssize_t TAO_AV_UDP_MCast_Transport::send	(	const iovec *	iov,
		int	iovcnt,
		ACE_Time_Value *	s = `0`
	)			`[virtual]`

Write the contents of iovcnt iovec's to the connection.

Implements TAO_AV_Transport.

Definition at line 174 of file MCast.cpp.

{
  return this->handler_->get_mcast_socket ()->send (iov,
                                                    iovcnt,
                                                    0);

}

ssize_t TAO_AV_UDP_MCast_Transport::send	(	const char *	buf,
		size_t	len,
		ACE_Time_Value *	s = `0`
	)			`[virtual]`

Write the contents of the buffer of length len to the connection.

Implements TAO_AV_Transport.

Definition at line 160 of file MCast.cpp.

{
//   if (TAO_debug_level > 0) ACE_DEBUG ((LM_DEBUG,"TAO_AV_UDP_MCast_Transport::send "));
//   char addr [BUFSIZ];
//   this->peer_addr_.addr_to_string (addr,BUFSIZ);
//   if (TAO_debug_level > 0) ACE_DEBUG ((LM_DEBUG,"to %s\n",addr));

  return this->handler_->get_mcast_socket ()->send (buf, len);

}

ssize_t TAO_AV_UDP_MCast_Transport::send	(	const ACE_Message_Block *	mblk,
		ACE_Time_Value *	s = `0`
	)			`[virtual]`

Implements TAO_AV_Transport.

Definition at line 104 of file MCast.cpp.

{
  // For the most part this was copied from GIOP::send_request and
  // friends.

  iovec iov[ACE_IOV_MAX];
  int iovcnt = 0;
  ssize_t n = 0;
  ssize_t nbytes = 0;

  for (const ACE_Message_Block *i = mblk;
       i != 0;
       i = i->cont ())
    {
      // Make sure there is something to send!
      if (i->length () > 0)
        {
          iov[iovcnt].iov_base = i->rd_ptr ();
          iov[iovcnt].iov_len  = static_cast<u_long> (i->length ());
          iovcnt++;

          // The buffer is full make a OS call.  @@ TODO this should
          // be optimized on a per-platform basis, for instance, some
          // platforms do not implement writev() there we should copy
          // the data into a buffer and call send_n(). In other cases
          // there may be some limits on the size of the iovec, there
          // we should set ACE_IOV_MAX to that limit.
          if (iovcnt == ACE_IOV_MAX)
            {
              n = this->handler_->get_mcast_socket ()->send ((const iovec *) iov,
                                                             iovcnt);

              if (n < 1)
                return n;

              nbytes += n;
              iovcnt = 0;
            }
        }
    }

  // Check for remaining buffers to be sent!
  if (iovcnt != 0)
    {
      n = this->handler_->get_mcast_socket ()->send ((const iovec *) iov,
                                                     iovcnt);
      if (n < 1)
        return n;

      nbytes += n;
    }

  return nbytes;
}

Member Data Documentation

TAO_AV_UDP_MCast_Flow_Handler* TAO_AV_UDP_MCast_Transport::handler_ [protected]

Definition at line 81 of file MCast.h.

ACE_INET_Addr TAO_AV_UDP_MCast_Transport::local_addr_ [protected]

Definition at line 83 of file MCast.h.

ACE_INET_Addr TAO_AV_UDP_MCast_Transport::peer_addr_ [protected]

Definition at line 82 of file MCast.h.

The documentation for this class was generated from the following files:

TAO_AV_UDP_MCast_Transport Class Reference

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation