/// Associate the new connection object with this datalink object.
/// The states of the "old" connection object are copied to the new
/// connection object and the "old" connection object is replaced by
/// the new connection object.
int
OpenDDS::DCPS::TcpDataLink::reconnect(TcpConnection* connection)
{
DBG_ENTRY_LVL("TcpDataLink","reconnect",6);
// Sanity check - the connection should exist already since we are reconnecting.
if (this->connection_.is_nil()) {
VDBG_LVL((LM_ERROR,
"(%P|%t) ERROR: TcpDataLink::reconnect old connection is nil.\n")
, 1);
return -1;
}
this->connection_->transfer(connection);
bool released = false;
TransportStrategy_rch brs;
TransportSendStrategy_rch bss;
{
GuardType guard2(this->strategy_lock_);
if (this->receive_strategy_.is_nil() && this->send_strategy_.is_nil()) {
released = true;
this->connection_ = 0;
} else {
brs = this->receive_strategy_;
bss = this->send_strategy_;
}
}
TcpConnection_rch conn_rch(connection, false);
if (released) {
TcpDataLink_rch this_rch(this, false);
return this->transport_->connect_tcp_datalink(this_rch, conn_rch);
}
this->connection_ = conn_rch._retn();
TcpReceiveStrategy* rs = static_cast<TcpReceiveStrategy*>(brs.in());
TcpSendStrategy* ss = static_cast<TcpSendStrategy*>(bss.in());
// Associate the new connection object with the receiveing strategy and disassociate
// the old connection object with the receiveing strategy.
int rs_result = rs->reset(this->connection_.in());
// Associate the new connection object with the sending strategy and disassociate
// the old connection object with the sending strategy.
int ss_result = ss->reset(this->connection_.in());
if (rs_result == 0 && ss_result == 0) {
return 0;
}
return -1;
}
//Allows the passive side to detect that the active side is connecting again
//prior to discovery identifying the released datalink from the active side.
//The passive side still believes it has a connection to the remote, however,
//the connect has created a new link/connection, thus the passive side can try
//to reuse the existing structures but reset it to associate the datalink with
//this new connection.
int
OpenDDS::DCPS::TcpDataLink::reuse_existing_connection(const TcpConnection_rch& connection)
{
DBG_ENTRY_LVL("TcpDataLink","reuse_existing_connection",6);
if (this->is_active_) {
return -1;
}
//Need to check if connection is nil. If connection is not nil, then connection
//has previously gone through connection phase so this is a reuse of the connection
//proceed to determine if we can reuse/reset existing mechanisms or need to start from
//scratch.
if (!this->connection_.is_nil()) {
VDBG_LVL((LM_DEBUG, "(%P|%t) TcpDataLink::reuse_existing_connection - "
"trying to reuse existing connection\n"), 0);
this->connection_->transfer(connection.in());
//Connection already exists.
TransportStrategy_rch brs;
TransportSendStrategy_rch bss;
if (this->receive_strategy_.is_nil() && this->send_strategy_.is_nil()) {
this->connection_ = 0;
return -1;
} else {
brs = this->receive_strategy_;
bss = this->send_strategy_;
this->connection_ = connection;
TcpReceiveStrategy* rs = static_cast<TcpReceiveStrategy*>(brs.in());
TcpSendStrategy* ss = static_cast<TcpSendStrategy*>(bss.in());
// Associate the new connection object with the receiving strategy and disassociate
// the old connection object with the receiving strategy.
int rs_result = rs->reset(this->connection_.in());
// Associate the new connection object with the sending strategy and disassociate
// the old connection object with the sending strategy.
int ss_result = ss->reset(this->connection_.in(), true);
if (rs_result == 0 && ss_result == 0) {
return 0;
}
}
}
return -1;
}