Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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connect (1 of 12 overloads)

Establishes a socket connection by trying each endpoint in a sequence.

template<
    typename Protocol,
    typename Executor,
    typename EndpointSequence>
Protocol::endpoint connect(
    basic_socket< Protocol, Executor > & s,
    const EndpointSequence & endpoints,
    typename constraint< is_endpoint_sequence< EndpointSequence >::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 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.

endpoints

A sequence of endpoints.

Return Value

The successfully connected endpoint.

Exceptions

boost::system::system_error

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

Example
tcp::resolver r(my_context);
tcp::resolver::query q("host", "service");
tcp::socket s(my_context);
boost::asio::connect(s, r.resolve(q));

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