[ace-users] recv_n and send_n with No Timeout
Douglas C. Schmidt
schmidt at dre.vanderbilt.edu
Sun Aug 5 10:19:50 CDT 2007
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>I am using ACE as a client. I do a recv_n / send_n with timeout = 0.
>Now; I am running into the following scenario:
>1. The other side is an embedded system.
>2. If for some reason the Host Computer (where I am running ACE)
>detects that the embedded system has crashed (i.e. some time has
>passed and recv_n / send_n have not returned); is there a way I can
>quit waiting so that I can proceed to do recovery work on the
>communication threads (i.e. the ones using ACE) ?
Can you simply use timeouts to do this?
>a) I read something about ACE having support for
>WaitForMultipleObjects, but not sure how I can relate this to my
>ACE_SOCK_Stream object doing the send_n / recv_n.
Please see Chapter 3 of C++NPv1 <www.cs.wustl.edu/~schmidt/ACE/book1/>
for info on using timeouts with the send*/recv* methods.
>b) Can I close the socket from within another function and expect
>send_n/recv_n to return with some error code ?
It's not clear what you mean here - can you give a short example please?
>I am reading ACE Practical Design Patterns for Network and Systems
>Programming, but have not been able to get the answers to neither of
Please see C++NPv1.
Dr. Douglas C. Schmidt Professor and Associate Chair
Electrical Engineering and Computer Science TEL: (615) 343-8197
Vanderbilt University WEB: www.dre.vanderbilt.edu/~schmidt
Nashville, TN 37203 NET: d.schmidt at vanderbilt.edu
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