[Boost-bugs] [Boost C++ Libraries] #13193: multiple sockets (reuse_address) + multiple io_service = packages never received

Subject: [Boost-bugs] [Boost C++ Libraries] #13193: multiple sockets (reuse_address) + multiple io_service = packages never received
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-09-05 14:29:28

#13193: multiple sockets (reuse_address) + multiple io_service = packages never
received
-----------------------------------------------+---------------------------
 Reporter:  rafal2@…                           |      Owner:
                                               |  chris_kohlhoff
     Type:  Bugs                               |     Status:  new
Milestone:  To Be Determined                   |  Component:  asio
  Version:  Boost 1.63.0                       |   Severity:  Problem
 Keywords:  reuse_address,io_service,multiple  |
-----------------------------------------------+---------------------------
 In example program, we open several UDP sockets (each on same address/port
 - with reuse_address),
 and they use several io_service.

 The result is that async_receive_from never reads any data.

 1) N sockets (same addr/port), using N various io_service - doe not work
 2) N sockets (each own port), using N various io_service - works
 3) N sockets (same addr/port), but using same 1 io_service - works
 4) 1 socket - works

 The full test case is in github:

 https://github.com/rfree-d/cppfuns/tree/79093a5458867ddbf0d36f0170a78465194370a4/asio_udp_srv

 if you run "make run" then program starts using "mport" option - each
 socket gets own port (so no need for the reuse flag) - and program works
 fine.

 if you run "make run_bug" then it is started without the "mport" and all
 sockets listen on port 9000 - and then the program does not work

 if you run the binary with no options then it shows usage (or grep sources
 for 'options').

 You can test program by sending data to UDP 9000 localhost,
 or just build test program in other directory up:

 https://github.com/rfree-d/cppfuns/tree/79093a5458867ddbf0d36f0170a78465194370a4/asio_udp_cli

 there "make", and run it with options like "127.0.0.1 9000"
 it is interactive, to send many data use:

 aaa 1000 100000

 for big packet sent once use

 aaa 1000 1

 to send one packet with string "exit" use

 exit 1 1

 Tested on Linux Debian 8 and 9.

-- 
Ticket URL: <https://svn.boost.org/trac10/boost/ticket/13193>
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