connect (3 of 12 overloads)

(Deprecated: Use range overload.) Establishes a socket connection by trying each endpoint in a sequence.

template<
    typename Protocol,
    typename Executor,
    typename Iterator>
Iterator connect(
    basic_socket< Protocol, Executor > & s,
    Iterator begin,
    constraint_t<!is_endpoint_sequence< Iterator >::value >  = 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 connect member function, once for each endpoint in the sequence, until a connection is successfully established.

Parameters

s: The socket to be connected. If the socket is already open, it will be closed.
begin: An iterator pointing to the start of a sequence of endpoints.

Return Value

On success, an iterator denoting the successfully connected endpoint. Otherwise, the end iterator.

Exceptions

asio::system_error: Thrown on failure. If the sequence is empty, the associated error_code is asio::error::not_found. Otherwise, contains the error from the last connection attempt.

Remarks

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 asio::ip::tcp::resolver::iterator.