(Deprecated: Use range overload.) Establishes a socket connection by trying each endpoint in a sequence.
template< typename Protocol, typename Executor, typename Iterator, typename ConnectCondition> Iterator connect( basic_socket< Protocol, Executor > & s, Iterator begin, ConnectCondition connect_condition, typename constraint<!is_endpoint_sequence< Iterator >::value >::type = 0);
This function attempts to connect a socket to one of a sequence of endpoints.
It does this by repeated calls to the socket's
member function, once for each endpoint in the sequence, until a connection
is successfully established.
The socket to be connected. If the socket is already open, it will be closed.
An iterator pointing to the start of a sequence of endpoints.
A function object that is called prior to each connection attempt. The signature of the function object must be:
bool connect_condition( const asio::error_code& ec, const typename Protocol::endpoint& next);
contains the result from the most recent connect operation. Before
the first connection attempt,
is always set to indicate success. The
parameter is the next endpoint to be tried. The function object should
return true if the next endpoint should be tried, and false if it
should be skipped.
On success, an iterator denoting the successfully connected endpoint. Otherwise, the end iterator.
Thrown on failure. If the sequence is empty, the associated
Otherwise, contains the error from the last connection attempt.
This overload assumes that a default constructed object of type
Iterator represents the end of the sequence.
This is a valid assumption for iterator types such as