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#include "IIOP_Connection_Handler.h"
#include "debug.h"
#include "ORB_Core.h"
#include "IIOP_Transport.h"
#include "IIOP_Endpoint.h"
#include "IIOPC.h"
#include "Thread_Lane_Resources.h"
#include "Base_Transport_Property.h"
#include "Protocols_Hooks.h"
#include "Wait_Strategy.h"
#include "ace/os_include/netinet/os_tcp.h"
#include "ace/os_include/os_netdb.h"
ACE_RCSID (tao,
IIOP_Connection_Handler,
"$Id$")
TAO_IIOP_Connection_Handler::TAO_IIOP_Connection_Handler (ACE_Thread_Manager *t)
: TAO_IIOP_SVC_HANDLER (t, 0 , 0),
TAO_Connection_Handler (0),
dscp_codepoint_ (IPDSFIELD_DSCP_DEFAULT << 2)
{
// This constructor should *never* get called, it is just here to
// make the compiler happy: the default implementation of the
// Creation_Strategy requires a constructor with that signature, we
// don't use that implementation, but some (most?) compilers
// instantiate it anyway.
ACE_ASSERT (0);
}
TAO_IIOP_Connection_Handler::TAO_IIOP_Connection_Handler (
TAO_ORB_Core *orb_core,
CORBA::Boolean flag)
: TAO_IIOP_SVC_HANDLER (orb_core->thr_mgr (), 0, 0),
TAO_Connection_Handler (orb_core),
dscp_codepoint_ (IPDSFIELD_DSCP_DEFAULT << 2)
{
TAO_IIOP_Transport* specific_transport = 0;
ACE_NEW (specific_transport,
TAO_IIOP_Transport (this, orb_core, flag));
// store this pointer (indirectly increment ref count)
this->transport (specific_transport);
}
TAO_IIOP_Connection_Handler::TAO_IIOP_Connection_Handler (TAO_ORB_Core *orb_core)
: TAO_IIOP_SVC_HANDLER (orb_core->thr_mgr (), 0, 0),
TAO_Connection_Handler (orb_core),
dscp_codepoint_ (IPDSFIELD_DSCP_DEFAULT << 2)
{
}
TAO_IIOP_Connection_Handler::~TAO_IIOP_Connection_Handler (void)
{
delete this->transport ();
}
/* Copy hook that copies over the concrete methods from this class
* to the base Connection_Handler class as a part of the specialization
* process. Add all concrete and virtual
* methods implemented in this class within this hook.
*/
//@@ CONNECTION_HANDLER_SPL_COPY_HOOK_START
int
TAO_IIOP_Connection_Handler::open_handler (void *v)
{
return this->open (v);
}
int
TAO_IIOP_Connection_Handler::open (void*)
{
TAO_IIOP_Protocol_Properties protocol_properties;
// Initialize values from ORB params.
protocol_properties.send_buffer_size_ =
this->orb_core ()->orb_params ()->sock_sndbuf_size ();
protocol_properties.recv_buffer_size_ =
this->orb_core ()->orb_params ()->sock_rcvbuf_size ();
protocol_properties.no_delay_ =
this->orb_core ()->orb_params ()->nodelay ();
TAO_Protocols_Hooks *tph =
this->orb_core ()->get_protocols_hooks ();
bool client =
this->transport ()->opened_as () == TAO::TAO_CLIENT_ROLE;
ACE_DECLARE_NEW_CORBA_ENV;
ACE_TRY
{
if (client)
{
tph->client_protocol_properties_at_orb_level (
protocol_properties
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
}
else
{
tph->server_protocol_properties_at_orb_level (
protocol_properties
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
}
}
ACE_CATCHANY
{
return -1;
}
ACE_ENDTRY;
ACE_CHECK_RETURN (-1);
if (this->set_socket_option (this->peer (),
protocol_properties.send_buffer_size_,
protocol_properties.recv_buffer_size_) == -1)
return -1;
#if !defined (ACE_LACKS_TCP_NODELAY)
if (this->peer ().set_option (ACE_IPPROTO_TCP,
TCP_NODELAY,
(void *) &protocol_properties.no_delay_,
sizeof (protocol_properties.no_delay_)) == -1)
return -1;
#endif /* ! ACE_LACKS_TCP_NODELAY */
if (this->transport ()->wait_strategy ()->non_blocking ()
|| this->transport ()->opened_as () == TAO::TAO_SERVER_ROLE)
{
if (this->peer ().enable (ACE_NONBLOCK) == -1)
return -1;
}
// Called by the <Strategy_Acceptor> when the handler is
// completely connected.
ACE_INET_Addr remote_addr;
if (this->peer ().get_remote_addr (remote_addr) == -1)
return -1;
ACE_INET_Addr local_addr;
if (this->peer ().get_local_addr (local_addr) == -1)
return -1;
if (TAO_debug_level > 2)
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT("TAO (%P|%t) - IIOP_Connection_Handler::open, ")
ACE_TEXT("The local addr is <%s> \n"),
local_addr. get_host_addr ()));
if (local_addr == remote_addr)
{
if (TAO_debug_level > 0)
{
ACE_TCHAR remote_as_string[MAXHOSTNAMELEN + 16];
ACE_TCHAR local_as_string[MAXHOSTNAMELEN + 16];
(void) remote_addr.addr_to_string (remote_as_string,
sizeof(remote_as_string));
(void) local_addr.addr_to_string (local_as_string,
sizeof(local_as_string));
ACE_ERROR ((LM_ERROR,
ACE_TEXT("TAO(%P|%t) - IIOP_Connection_Handler::open, ")
ACE_TEXT("Holy Cow! The remote addr and ")
ACE_TEXT("local addr are identical (%s == %s)\n"),
remote_as_string, local_as_string));
}
return -1;
}
#if defined (ACE_HAS_IPV6) && !defined (ACE_HAS_IPV6_V6ONLY)
// Check if we need to invalidate accepted connections
// from IPv4 mapped IPv6 addresses
if (this->orb_core ()->orb_params ()->connect_ipv6_only () &&
remote_addr.is_ipv4_mapped_ipv6 ())
{
if (TAO_debug_level > 0)
{
ACE_TCHAR remote_as_string[MAXHOSTNAMELEN + 16];
(void) remote_addr.addr_to_string (remote_as_string,
sizeof(remote_as_string));
ACE_ERROR ((LM_WARNING,
ACE_TEXT("TAO (%P|%t) - IIOP_Connection_Handler::open, ")
ACE_TEXT("invalid connection from IPv4 mapped IPv6 interface <%s>!\n"),
remote_as_string));
}
return -1;
}
#endif /* ACE_HAS_IPV6 && ACE_HAS_IPV6_V6ONLY */
if (TAO_debug_level > 0)
{
ACE_TCHAR client_addr[MAXHOSTNAMELEN + 16];
// Verify that we can resolve the peer hostname.
if (remote_addr.addr_to_string (client_addr, sizeof (client_addr)) == -1)
return -1;
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("TAO (%P|%t) - IIOP_Connection_Handler::open, IIOP ")
ACE_TEXT ("connection to peer <%s> on %d\n"),
client_addr, this->peer ().get_handle ()));
}
// Set that the transport is now connected, if fails we return -1
// Use C-style cast b/c otherwise we get warnings on lots of
// compilers
if (!this->transport ()->post_open ((size_t) this->get_handle ()))
return -1;
this->state_changed (TAO_LF_Event::LFS_SUCCESS,
this->orb_core ()->leader_follower ());
return 0;
}
int
TAO_IIOP_Connection_Handler::resume_handler (void)
{
return ACE_Event_Handler::ACE_APPLICATION_RESUMES_HANDLER;
}
int
TAO_IIOP_Connection_Handler::close_connection (void)
{
// To maintain maximum compatibility, we only set this socket option
// if the user has provided a linger timeout.
int linger = this->orb_core()->orb_params()->linger ();
if (linger != -1)
{
struct linger lval;
lval.l_onoff = 1;
lval.l_linger = linger;
if (this->peer ().set_option(SOL_SOCKET,
SO_LINGER,
(void*) &lval,
sizeof (lval)) == -1)
{
if (TAO_debug_level)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("TAO (%P|%t) Unable to set ")
ACE_TEXT ("SO_LINGER on %d\n"),
this->peer ().get_handle ()));
}
}
}
return this->close_connection_eh (this);
}
int
TAO_IIOP_Connection_Handler::handle_input (ACE_HANDLE h)
{
return this->handle_input_eh (h, this);
}
int
TAO_IIOP_Connection_Handler::handle_output (ACE_HANDLE handle)
{
const int result =
this->handle_output_eh (handle, this);
if (result == -1)
{
this->close_connection ();
return 0;
}
return result;
}
int
TAO_IIOP_Connection_Handler::handle_timeout (const ACE_Time_Value &,
const void *)
{
// We don't use this upcall for I/O. This is only used by the
// Connector to indicate that the connection timedout. Therefore,
// we should call close().
return this->close ();
}
int
TAO_IIOP_Connection_Handler::handle_close (ACE_HANDLE,
ACE_Reactor_Mask)
{
ACE_ASSERT (0);
return 0;
}
int
TAO_IIOP_Connection_Handler::close (u_long)
{
return this->close_handler ();
}
int
TAO_IIOP_Connection_Handler::release_os_resources (void)
{
return this->peer ().close ();
}
int
TAO_IIOP_Connection_Handler::add_transport_to_cache (void)
{
ACE_INET_Addr addr;
// Get the peername.
if (this->peer ().get_remote_addr (addr) == -1)
return -1;
// Construct an IIOP_Endpoint object
TAO_IIOP_Endpoint endpoint (
addr,
this->orb_core()->orb_params()->cache_incoming_by_dotted_decimal_address ());
// Construct a property object
TAO_Base_Transport_Property prop (&endpoint);
TAO::Transport_Cache_Manager &cache =
this->orb_core ()->lane_resources ().transport_cache ();
// Idle the transport..
return cache.cache_idle_transport (&prop,
this->transport ());
}
int
TAO_IIOP_Connection_Handler::process_listen_point_list (
IIOP::ListenPointList &listen_list)
{
// Get the size of the list
const CORBA::ULong len = listen_list.length ();
if (TAO_debug_level > 0 && len == 0)
{
ACE_ERROR ((LM_ERROR,
ACE_TEXT("TAO (%P|%t) - IIOP_Connection_Handler::")
ACE_TEXT("process_listen_point_list, ")
ACE_TEXT("Received list of size 0, check client config.\n")));
}
for (CORBA::ULong i = 0; i < len; ++i)
{
IIOP::ListenPoint listen_point = listen_list[i];
ACE_INET_Addr addr (listen_point.port,
listen_point.host.in ());
if (TAO_debug_level > 0)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT("TAO (%P|%t) - IIOP_Connection_Handler::")
ACE_TEXT("process_listen_point_list, ")
ACE_TEXT("Listening port [%d] on [%s]\n"),
listen_point.port,
ACE_TEXT_CHAR_TO_TCHAR(listen_point.host.in ())));
}
// Construct an IIOP_Endpoint object using the host as provided
// in the listen point list. We must use host in that form because
// that's also how the ORB on the other side will advertise the host
// in an IOR.
TAO_IIOP_Endpoint endpoint (listen_point.host.in (),
listen_point.port, addr);
// Construct a property object
TAO_Base_Transport_Property prop (&endpoint);
// Mark the connection as bidirectional
prop.set_bidir_flag (1);
// The property for this handler has changed. Recache the
// handler with this property
int retval =
this->transport ()->recache_transport (&prop);
if (retval == -1)
return retval;
// Make the handler idle and ready for use
this->transport ()->make_idle ();
}
return 0;
}
int
TAO_IIOP_Connection_Handler::set_dscp_codepoint (CORBA::Boolean set_network_priority)
{
int tos = IPDSFIELD_DSCP_DEFAULT << 2;
if (set_network_priority)
{
TAO_Protocols_Hooks *tph =
this->orb_core ()->get_protocols_hooks ();
CORBA::Long codepoint =
tph->get_dscp_codepoint ();
tos = (int)(codepoint) << 2;
}
if (tos != this->dscp_codepoint_)
{
int result = 0;
#if defined (ACE_HAS_IPV6)
ACE_INET_Addr local_addr;
if (this->peer ().get_local_addr (local_addr) == -1)
return -1;
else if (local_addr.get_type () == AF_INET6)
# if !defined (IPV6_TCLASS)
// IPv6 defines option IPV6_TCLASS for specifying traffic class/priority
// but not many implementations yet (very new;-).
{
if (TAO_debug_level)
{
ACE_DEBUG ((LM_DEBUG,
"TAO (%P|%t) - IIOP_Connection_Handler::"
"set_dscp_codepoint -> IPV6_TCLASS not supported yet\n"));
}
return 0;
}
# else /* !IPV6_TCLASS */
result = this->peer ().set_option (IPPROTO_IPV6,
IPV6_TCLASS,
(int *) &tos ,
(int) sizeof (tos));
else
# endif /* IPV6_TCLASS */
#endif /* ACE_HAS_IPV6 */
result = this->peer ().set_option (IPPROTO_IP,
IP_TOS,
(int *) &tos ,
(int) sizeof (tos));
if (TAO_debug_level)
{
ACE_DEBUG ((LM_DEBUG,
"TAO (%P|%t) - IIOP_Connection_Handler::"
"set_dscp_codepoint -> dscp: %x; result: %d; %s\n",
tos,
result,
result == -1 ? "try running as superuser" : ""));
}
// On successful setting of TOS field.
if (result == 0)
this->dscp_codepoint_ = tos;
}
return 0;
}
//@@ CONNECTION_HANDLER_SPL_COPY_HOOK_END
/*
* End copy hook
*/
|