Windows 7 does not allow me to open a multicast socket on 18.104.22.168
An application I a built (on Java) requires that I open a multicast socket on 22.214.171.124 so as to send UDP packets. I ran my application on an older Windows XP PC and it works fine. But there seems to be no issues for addresses above 126.96.36.199 (Ex. 188.8.131.52). Additionally, I ran a tracert 184.108.40.206 command on CMD prompt and it gives a Transmit error: code 1232. The same command works fine on the XP pc. Thanks.
May 30th, 2012 11:10pm
Hi Milos, I got the same problem. 220.127.116.11 work fine in winXP but not in Win7. (Both in java and winsock) After a little try. I found 18.104.22.168 can work both in WinXP and Win7. But 22.214.171.124 can only work in LAN Interface, for WIFI interface can't work correctly. I still try to find out the problem. Hope this can help you. Best Regards, Kenny Chang
November 13th, 2012 10:50pm
126.96.36.199 is reserved. This is the Group all multicast hosts have to listen to. It's better not to use that reserved IP. You should use 188.8.131.52/8 IP network instead. You should also keep in mind IP <-> MAC Address mapping in order to avoid MAC Address overlapping, because different multicast IPs can have the same MAC Address.
December 27th, 2012 7:11pm