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// $Id$
#include "tao/IIOP_Transport.h"
#if defined (TAO_HAS_IIOP) && (TAO_HAS_IIOP != 0)
#include "tao/IIOP_Acceptor.h"
#include "tao/IIOPC.h"
#include "tao/Acceptor_Registry.h"
#include "tao/operation_details.h"
#include "tao/Wait_Strategy.h"
#include "tao/debug.h"
#include "tao/GIOP_Message_Base.h"
#include "tao/Protocols_Hooks.h"
#include "tao/ORB_Core.h"
#include "tao/Thread_Lane_Resources.h"
#include "tao/Transport_Mux_Strategy.h"
#include "tao/MMAP_Allocator.h"
#include "ace/OS_NS_sys_sendfile.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
TAO_IIOP_Transport::TAO_IIOP_Transport (TAO_IIOP_Connection_Handler *handler,
TAO_ORB_Core *orb_core)
: TAO_Transport (IOP::TAG_INTERNET_IOP,
orb_core)
, connection_handler_ (handler)
{
}
TAO_IIOP_Transport::~TAO_IIOP_Transport (void)
{
}
/*
* Hook to copy over all concrete implementations
* of Transport class from this class to the base
* class as a part of the specialization.
* All enhancements to the IIOP_Transport
* class, i.e., addition of new concrete non virtual
* methods should be added within this hook.
*/
//@@ TAO_TRANSPORT_SPL_COPY_HOOK_START
ACE_Event_Handler *
TAO_IIOP_Transport::event_handler_i (void)
{
return this->connection_handler_;
}
TAO_Connection_Handler *
TAO_IIOP_Transport::connection_handler_i (void)
{
return this->connection_handler_;
}
ssize_t
TAO_IIOP_Transport::send (iovec *iov, int iovcnt,
size_t &bytes_transferred,
const ACE_Time_Value *max_wait_time)
{
ssize_t const retval =
this->connection_handler_->peer ().sendv (iov,
iovcnt,
max_wait_time);
if (retval > 0)
bytes_transferred = retval;
else
{
if (TAO_debug_level > 4)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("TAO (%P|%t) - IIOP_Transport[%d]::send, ")
ACE_TEXT ("send failure (errno: %d) - %m\n"),
this->id (), ACE_ERRNO_GET));
}
}
return retval;
}
#if TAO_HAS_SENDFILE == 1
ssize_t
TAO_IIOP_Transport::sendfile (TAO_MMAP_Allocator * allocator,
iovec * iov,
int iovcnt,
size_t &bytes_transferred,
TAO::Transport::Drain_Constraints const & dc)
{
// @@ We should probably set the TCP_CORK socket option to minimize
// network operations. It may also be useful to adjust the
// socket send buffer size accordingly.
// If we don't have an allocator, fallback to the regular way of sending
// data
if (allocator == 0)
return this->send (iov, iovcnt, bytes_transferred, this->io_timeout(dc));
// We can only use sendfile when all data is coming from the mmap allocator,
// if not, we just fallback to to the regular way of sending data
iovec * const off_check_begin = iov;
iovec * const off_check_end = iov + iovcnt;
for (iovec * index = off_check_begin; index != off_check_end; ++index)
{
if (-1 == allocator->offset (index->iov_base))
return this->send (iov, iovcnt, bytes_transferred,
this->io_timeout(dc));
}
ssize_t retval = -1;
ACE_HANDLE const in_fd = allocator->handle ();
if (in_fd == ACE_INVALID_HANDLE)
return retval;
ACE_HANDLE const out_fd =
this->connection_handler_->peer ().get_handle ();
iovec * const begin = iov;
iovec * const end = iov + iovcnt;
for (iovec * i = begin; i != end; ++i)
{
off_t offset = allocator->offset (i->iov_base);
if (this->io_timeout(dc))
{
int val = 0;
if (ACE::enter_send_timedwait (out_fd,
this->io_timeout(dc), val) == -1)
return retval;
else
{
retval =
ACE_OS::sendfile (out_fd, in_fd, &offset, i->iov_len);
ACE::restore_non_blocking_mode (out_fd, val);
}
}
else
{
retval = ACE_OS::sendfile (out_fd, in_fd, &offset, i->iov_len);
}
if (retval <= 0) // Report errors below.
break;
bytes_transferred += static_cast<size_t> (retval);
}
if (retval <= 0 && TAO_debug_level > 4)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("TAO (%P|%t) - IIOP_Transport[%d]::sendfile, ")
ACE_TEXT ("sendfile failure - %m (errno: %d)\n"),
this->id (),
ACE_ERRNO_GET));
}
return retval;
}
#endif /* TAO_HAS_SENDFILE==1 */
ssize_t
TAO_IIOP_Transport::recv (char *buf,
size_t len,
const ACE_Time_Value *max_wait_time)
{
this->connection_closed_on_read_ = false;
ssize_t const n = this->connection_handler_->peer ().recv (buf,
len,
max_wait_time);
// Do not print the error message if it is a timeout, which could
// occur in thread-per-connection.
if (n == -1 && TAO_debug_level > 4 && errno != ETIME)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("TAO (%P|%t) - IIOP_Transport[%d]::recv, ")
ACE_TEXT ("read failure - %m errno %d\n"),
this->id (),
ACE_ERRNO_GET));
}
// Error handling
if (n == -1)
{
if (errno == EWOULDBLOCK)
return 0;
return -1;
}
// Most of the errors handling is common for
// Now the message has been read
// @@ What are the other error handling here??
else if (n == 0)
{
this->connection_closed_on_read_ = true;
return -1;
}
return n;
}
int
TAO_IIOP_Transport::send_request (TAO_Stub *stub,
TAO_ORB_Core *orb_core,
TAO_OutputCDR &stream,
TAO_Message_Semantics message_semantics,
ACE_Time_Value *max_wait_time)
{
if (this->ws_->sending_request (orb_core, message_semantics) == -1)
{
return -1;
}
if (this->send_message (stream,
stub,
0,
message_semantics,
max_wait_time) == -1)
{
return -1;
}
this->first_request_sent();
return 0;
}
int
TAO_IIOP_Transport::send_message (TAO_OutputCDR &stream,
TAO_Stub *stub,
TAO_ServerRequest *request,
TAO_Message_Semantics message_semantics,
ACE_Time_Value *max_wait_time)
{
// Format the message in the stream first
if (this->messaging_object ()->format_message (stream, stub, request) != 0)
{
return -1;
}
// This guarantees to send all data (bytes) or return an error.
ssize_t const n = this->send_message_shared (stub,
message_semantics,
stream.begin (),
max_wait_time);
if (n == -1)
{
// Dont try to be smart and request for %p in the debug
// statement. If the event handler is destroyed the transport
// would return -1 with errno set to ENOENT. %p then would dump
// a core. %m would then be softer on this.
if (TAO_debug_level)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("TAO (%P|%t) - IIOP_Transport[%d]::send_message, ")
ACE_TEXT ("write failure - %m\n"),
this->id ()));
}
return -1;
}
return 1;
}
int
TAO_IIOP_Transport::tear_listen_point_list (TAO_InputCDR &cdr)
{
CORBA::Boolean byte_order;
if (!(cdr >> ACE_InputCDR::to_boolean (byte_order)))
return -1;
cdr.reset_byte_order (static_cast<int> (byte_order));
IIOP::ListenPointList listen_list;
if (!(cdr >> listen_list))
return -1;
// As we have received a bidirectional information, set the flag to
// 0 (i.e., non-originating side)
this->bidirectional_flag (0);
return this->connection_handler_->process_listen_point_list (listen_list);
}
void
TAO_IIOP_Transport::set_bidir_context_info (TAO_Operation_Details &opdetails)
{
// Get a handle to the acceptor registry
TAO_Acceptor_Registry &ar =
this->orb_core ()->lane_resources ().acceptor_registry ();
IIOP::ListenPointList listen_point_list;
TAO_AcceptorSetIterator const end = ar.end ();
for (TAO_AcceptorSetIterator acceptor = ar.begin ();
acceptor != end;
++acceptor)
{
// Check whether it is an IIOP acceptor
if ((*acceptor)->tag () == this->tag ())
{
if (this->get_listen_point (listen_point_list, *acceptor) == -1)
{
if (TAO_debug_level > 0)
ACE_ERROR ((LM_ERROR,
"TAO (%P|%t) - IIOP_Transport::set_bidir_context_info, "
"error getting listen_point\n"));
return;
}
}
}
if (listen_point_list.length () == 0)
{
if (TAO_debug_level > 0)
ACE_ERROR ((LM_ERROR,
"TAO (%P|%t) - IIOP_Transport::set_bidir_context_info, "
"listen_point list is empty, client should send a list "
"with at least one point\n"));
return;
}
// We have the ListenPointList at this point. Create a output CDR
// stream at this point
TAO_OutputCDR cdr;
// Marshal the information into the stream
if (!(cdr << ACE_OutputCDR::from_boolean (TAO_ENCAP_BYTE_ORDER))
|| (!(cdr << listen_point_list)))
return;
// Add this info in to the svc_list
opdetails.request_service_context ().set_context (IOP::BI_DIR_IIOP, cdr);
return;
}
int
TAO_IIOP_Transport::get_listen_point (
IIOP::ListenPointList &listen_point_list,
TAO_Acceptor *acceptor)
{
TAO_IIOP_Acceptor *iiop_acceptor =
dynamic_cast<TAO_IIOP_Acceptor *> (acceptor);
if (iiop_acceptor == 0)
return -1;
// Get the array of endpoints serviced by TAO_IIOP_Acceptor
const ACE_INET_Addr *endpoint_addr =
iiop_acceptor->endpoints ();
size_t count = iiop_acceptor->endpoint_count ();
#if defined (TAO_USE_BROKEN_BIDIR)
// Note: Looks like there is no point in sending the list of
// endpoints on interfaces on which this connection has not
// been established. If this is wrong, please correct me.
ACE_INET_Addr local_addr;
if (this->connection_handler_->peer ().get_local_addr (local_addr)
== -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("TAO (%P|%t) - IIOP_Transport::get_listen_point, ")
ACE_TEXT ("could not resolve local host address\n")),
-1);
}
#endif /* TAO_USE_BROKEN_BIDIR */
for (size_t index = 0; index < count; index++)
{
#if defined (TAO_USE_BROKEN_BIDIR)
// Make sure port numbers are equal so the following comparison
// only concerns the IP(v4/v6) address.
local_addr.set_port_number (endpoint_addr[index].get_port_number ());
if (local_addr != endpoint_addr[index])
continue;
#endif /* TAO_USE_BROKEN_BIDIR */
// Get the local address of the connection
CORBA::String_var interface_name;
// Get the hostname for the local address
if (iiop_acceptor->hostname (this->orb_core_,
endpoint_addr[index],
interface_name.out ()) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("TAO (%P|%t) - IIOP_Transport::get_listen_point, ")
ACE_TEXT ("could not resolve local host name\n")),
-1);
}
#if defined (ACE_HAS_IPV6)
// If this is an IPv6 decimal linklocal address containing a scopeid than
// remove the scopeid from the information being sent.
const char *cp_scope = 0;
if (endpoint_addr[index].get_type () == PF_INET6 &&
(cp_scope = ACE_OS::strchr (interface_name.in (), '%')) != 0)
{
CORBA::ULong len = cp_scope - interface_name.in ();
interface_name[len] = '\0';
}
#endif /* ACE_HAS_IPV6 */
// Get the count of the number of elements
CORBA::ULong const len = listen_point_list.length ();
// Increase the length by 1
listen_point_list.length (len + 1);
// We have the connection and the acceptor endpoint on the
// same interface
IIOP::ListenPoint & point = listen_point_list[len];
point.host = CORBA::string_dup (interface_name.in ());
point.port = endpoint_addr[index].get_port_number ();
if (TAO_debug_level >= 5)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT("TAO (%P|%t) - Listen_Point_List[%d] = <%C:%d>\n"),
len,
point.host.in (),
point.port));
}
}
return 1;
}
//@@ TAO_TRANSPORT_SPL_COPY_HOOK_END
/*
* End of copy hook.
*/
TAO_END_VERSIONED_NAMESPACE_DECL
#endif /* TAO_HAS_IIOP && TAO_HAS_IIOP != 0 */
|