[Boost-bugs] [Boost C++ Libraries] #10814: Boost asio socket keeps established connection forever even after endpoint is closed.

Subject: [Boost-bugs] [Boost C++ Libraries] #10814: Boost asio socket keeps established connection forever even after endpoint is closed.
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-11-24 20:40:33

#10814: Boost asio socket keeps established connection forever even after endpoint
is closed.
-----------------------------------------------+---------------------------
 Reporter:  Iván <versuchen@…>                 |      Owner:
     Type:  Bugs                               |  chris_kohlhoff
Milestone:  To Be Determined                   |     Status:  new
  Version:  Boost 1.57.0                       |  Component:  asio
 Keywords:  asio established forever blocking  |   Severity:  Problem
-----------------------------------------------+---------------------------
 Context:

 Server side:

   Accept socket
   loop blocking read from accepted socket

 Client side:

   Connect
   loop blocking write to connected socket

 Sporadically the client endpoint is ended but the server is not notified
 of that event. After that, the client can connect again to the server
 (even tho gdb says the thread is on recv) but the server never returns
 from the blocking read due to, probably, the new endpoint sending data
 doesn't match the last one:

 Server side:
 {{{
 Local Address         Foreign Address
 192.168.1.1:1234      192.168.1.2:50000
 }}}


 Client side after connection was dropped:

 {{{
 Local Address         Foreign Address
 192.168.1.2:50001     192.168.1.2:1234
 }}}

 As I said, the issue is sporadic but I can reproduce the same blocking
 behaviour as follows:

 1. Run the server and client normally. Client sends data and server reads
 it.
 2. Enable a traffic filter with a firewall blocking/dropping packages at
 the client.
 3. After step 2, I can kill the client process and the server will never
 realize that the client is no longer there, so it will block at recv
 forever.

 Regards,
 Iván

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10814>
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