Re: [Boost-bugs] [Boost C++ Libraries] #13463: Boost UDP multicast sender not using correct port

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #13463: Boost UDP multicast sender not using correct port
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2018-03-04 01:32:37

#13463: Boost UDP multicast sender not using correct port
-------------------------------+---------------------------------------
  Reporter:  anonymous         |      Owner:  chris_kohlhoff
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  asio
   Version:  Boost 1.66.0      |   Severity:  Showstopper
Resolution:                    |   Keywords:  asio udp multicast sender
-------------------------------+---------------------------------------

Comment (by nguyen.tnhoang@…):

 OK, I manage to narrow down the error, but not sure how it happens.  In
 the sender() class constructor:

         sender(boost::asio::io_context& io_context, const
 boost::asio::ip::address& multicast_address)
                 : endpoint_(multicast_address, multicast_port),
                 socket_(io_context, endpoint_.protocol()),
                 timer_(io_context),
                 message_count_(0)

 I change the line:

                 socket_(io_context, endpoint_.protocol()),

 into

                 socket_(io_context, udp::endpoint(udp::v4(), 13000)),

 It works properly.  Wireshark shows the packages sent with that specified
 source port of 13000.  However, if I change it to:

                 socket_(io_context, udp::endpoint(udp::v4(),
 multicast_port)),

 It still won't work, despite multicast_port being specified as 13000.
 Please help.  I need the source port to be dynamically set.  Thank you.

-- 
Ticket URL: <https://svn.boost.org/trac10/ticket/13463#comment:2>
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