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#include "IO_Handler_Connector.h"
// $Id$
IO_Handler_Connector::IO_Handler_Connector (void)
{
}
// Override the connection-failure method to add timer support.
// Note that these timers perform "expoential backoff" to
// avoid rapidly trying to reestablish connections when a link
// goes down.
int
IO_Handler_Connector::handle_close (ACE_HANDLE sd, ACE_Reactor_Mask)
{
ACE_Connector<IO_Handler, ACE_SOCK_CONNECTOR>::AST *stp = 0;
// Locate the ACE_Svc_Handler corresponding to the socket descriptor.
if (this->handler_map_.find (sd, stp) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%t) can't locate channel %d in map, %p\n",
sd, "find"), -1);
IO_Handler *channel = stp->svc_handler ();
// Schedule a reconnection request at some point in the future
// (note that channel uses an exponential backoff scheme).
if (ACE_Service_Config::reactor ()->schedule_timer (channel, 0,
channel->timeout ()) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%t) %p\n",
"schedule_timer"), -1);
return 0;
}
// Initiate (or reinitiate) a connection to the IO_Handler.
int
IO_Handler_Connector::initiate_connection (IO_Handler *channel,
ACE_Synch_Options &synch_options)
{
char buf[MAXHOSTNAMELEN];
// Mark ourselves as idle so that the various iterators
// will ignore us until we are reconnected.
channel->state (IO_Handler::IDLE);
if (channel->remote_addr ().addr_to_string (buf, sizeof buf) == -1
|| channel->local_addr ().addr_to_string (buf, sizeof buf) == -1)
ACE_ERROR_RETURN ((LM_ERROR, "(%t) %p\n",
"can't obtain peer's address"), -1);
// Try to connect to the Peer.
if (this->connect (channel, channel->remote_addr (),
synch_options, channel->local_addr ()) == -1)
{
if (errno != EWOULDBLOCK)
{
channel->state (IO_Handler::FAILED);
ACE_DEBUG ((LM_DEBUG, "(%t) %p on address %s\n",
"connect", buf));
// Reschedule ourselves to try and connect again.
if (synch_options[ACE_Synch_Options::USE_REACTOR])
{
if (ACE_Service_Config::reactor ()->schedule_timer
(channel, 0, channel->timeout ()) == 0)
ACE_ERROR_RETURN ((LM_ERROR, "(%t) %p\n",
"schedule_timer"), -1);
}
else
// Failures on synchronous connects are reported as errors
// so that the caller can decide how to proceed.
return -1;
}
else
{
channel->state (IO_Handler::CONNECTING);
ACE_DEBUG ((LM_DEBUG,
"(%t) in the process of connecting %s to %s\n",
synch_options[ACE_Synch_Options::USE_REACTOR]
? "asynchronously" : "synchronously", buf));
}
}
else
{
channel->state (IO_Handler::ESTABLISHED);
ACE_DEBUG ((LM_DEBUG, "(%t) connected to %s on %d\n",
buf, channel->get_handle ()));
}
return 0;
}
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