Re: [Boost-users] [asio] Socket closed notification?

On Mon, Dec 14, 2009 at 9:17 PM, Scott Gifford wrote:

Andrew Maclean writes:

...

On Tue, Dec 15, 2009 at 2:50 PM, Scott Gifford wrote:

...

Jonathan Franklin writes: Sure, just use any of the read functions and see if they return an error.  In my application, I use read_until(), but any function that reads should do.

If the remote app closes unexpectedly, you read will return EOF.

...

Unfortunately, write isn't reliable since it will always succeed until you fill up your send buffer.

Well, OK, maybe a write and a flush.  Certainly there are othe buffers, but typically a TCP implementation will time out at some point if it has some pending data which is not acknowledged, and typically once data is flushed to the TCP layer it will try to write it and begin waiting for its timeout.

Yeah, it's not reliable, and can take *many* writes. Jon