Class close_after

example/cpp11/timeouts/blocking_token_tcp_client.cpp:37–49

A custom completion token that makes asynchronous operations behave as though they are blocking calls with a timeout.

// A custom completion token that makes asynchronous operations behave as
// though they are blocking calls with a timeout.
struct close_after
{
  close_after(std::chrono::steady_clock::duration t, tcp_socket& s)
    : timeout_(t), socket_(s)
  {
  }

  // The maximum time to wait for an asynchronous operation to complete.
  std::chrono::steady_clock::duration timeout_;

  // The socket to be closed if the operation does not complete in time.
  tcp_socket& socket_;
};

namespace boost {
namespace asio {