...one of the most highly
regarded and expertly designed C++ library projects in the
world. — Herb Sutter and Andrei
(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
function, once for each endpoint in the sequence, until a connection is
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 boost::system::error_code& ec, const typename Protocol::endpoint& next);
ec parameter contains the result from the most recent
connect operation. Before the first connection attempt,
is always set to indicate success. The
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
On success, an iterator denoting the successfully connected endpoint. Otherwise, the end iterator.
Thrown on failure. If the sequence is empty, the associated
boost::asio::error::not_found. Otherwise, contains
the error from the last connection attempt.
This overload assumes that a default constructed object of type
represents the end of the sequence. This is a valid assumption for iterator
types such as