void SyncClusterConnection::_connect( const std::string& host ) {
log() << "SyncClusterConnection connecting to [" << host << "]" << endl;
DBClientConnection * c = new DBClientConnection( true );
c->setRunCommandHook(_runCommandHook);
c->setPostRunCommandHook(_postRunCommandHook);
c->setSoTimeout( _socketTimeout );
string errmsg;
if ( ! c->connect( HostAndPort(host), errmsg ) )
log() << "SyncClusterConnection connect fail to: " << host << " errmsg: " << errmsg << endl;
_connAddresses.push_back( host );
_conns.push_back( c );
}
