Join Multicast group fails on iOS

[huubeikens]

I try to join an IPV6 multicast group in an iOS 7.1.1 (iphone) app but fails. The error I get is:
Error Domain=kCFStreamErrorDomainPOSIX Code=-1 "Unable to join IPv6 multicast group" UserInfo=0x15d5b590 {NSLocalizedDescription=Unable to join IPv6 multicast group}

Code (snippit) I'm using is:
const NSString* ipcMulticastAddress = @"FF15::e755";
const NSInteger ipcPort = 9009;
socket = [[AsyncUdpSocket alloc] init] ;
[[self socket] setDelegate:self];
[self connect];
BOOL result = [socket bindToPort:ipcPort error:&err];
result = [socket joinMulticastGroup:(NSString*)ipcMulticastAddress error:&err];
The error occurs at the last line when doing joinMulticastGroup.

[huubeikens]

I've found the solution and created a fix:
#239

[mdspann]

Change line 1138 of AsyncUdpSocket.m from
error = setsockopt(CFSocketGetNative(theSocket6), IPPROTO_IP, IPV6_JOIN_GROUP,
to
error = setsockopt(CFSocketGetNative(theSocket6), IPPROTO_IPV6, IPV6_JOIN_GROUP,

That fixed it for me.

[PrzemekMalak]

W dniach 2013.06.01 do 2013.06.10 jestem nieobecny.

Thank you for your email. At present I am unavailable to attend to your message. A reply will be made after June 9th.

[github-actions]

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