c# - Socket Error The requested address is not valid in its context -

c# - Socket Error The requested address is not valid in its context -

while trying set socketoption using :

listener.setsocketoption(socketoptionlevel.ip, socketoptionname.addmembership, new multicastoption(ipaddress));

i getting next exception ;

the requested address not valid in context

my listmer is:

socket listener = new socket(addressfamily.internetwork, sockettype.dgram, protocoltype.udp);

and ip 3.212.x.x

is problem because of ip ?

the problem in statement:

listener.setsocketoption(socketoptionlevel.ip, socketoptionname.addmembership, new multicastoption(ipaddress));

msdn outline constructor :

public multicastoption( ipaddress grouping )

so multicastoption looks grouping broadcast had passed localip , problem.

i instead updated code:

ipaddress ip = ipaddress.parse("224.5.6.7"); socket _socketserver = new socket(addressfamily.internetwork, sockettype.dgram, protocoltype.udp); _socketserver.setsocketoption(socketoptionlevel.ip, socketoptionname.addmembership, new multicastoption(ip)); _socketserver.setsocketoption(socketoptionlevel.ip, socketoptionname.multicasttimetolive, 1);

c# sockets multicast