Re: [Boost-users] [boost.asio] string iterator not dereferencable using message in async_send_to

From: Johan Nilsson (r.johan.nilsson_at_[hidden])
Date: 2008-09-03 02:50:32

John Urberg wrote:
> I'm using async_send_to to send multicast messages.  When I try to
> send data in a std::string, I always get a 'string iterator not
> dereferencable' assertion failure.  I'm using boost 1.35 and VC9.
> Here's the code:
>
> // instance variable
> string buffer;
>
> // code in method
> buffer = BuildHailMessage();
> socket.async_send_to(
>   boost::asio::buffer(buffer),
>   endpoint,
>   boost::bind(
>      &MulticastServer::HandleSendTo,
>      this,
>      boost::asio::placeholders::error));

Do you keep the "buffer" string available until async_send_to has actually 
completed?

/ Johan