id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
13463	Boost UDP multicast sender not using correct port	anonymous	chris_kohlhoff	"I follow this code to create a UDP multicast receiver: http://www.boost.org/doc/libs/1_66_0/doc/html/boost_asio/example/cpp11/multicast/sender.cpp

I modify the code with these for predefined values:

class receiver:

    short multicast_port = 13000;

in main():

    //if (argc != 2) and the code for argv that follows are commented out

    sender s(io_context, boost::asio::ip::make_address(""192.168.0.255""));

The first 3 octets match that of the local network.  I check with Wireshark. It shows me that the packages are sent with source port of 53916, and destination port 0.  Running the code again gives a source port of 59483, and destination port 0.

What is causing the source port to be different from specified value?  How can I force it to use the specified port number?  Thanks."	Bugs	new	To Be Determined	asio	Boost 1.66.0	Showstopper		asio udp multicast sender