dbee8c9b89
Motivation: #10995 when `io.netty.channel.unix.Socket` is ipv6 and join a multicast group with ipv4 address will cause `io.netty.channel.ChannelException: setsockopt() failed: Invalid argument` (at least in `Linux centos.dev 4.18.0-240.10.1.el8_3.x86_64 #1 SMP Mon Jan 18 17:05:51 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux`) Modification: check if target group address is ipv6 before call `io.netty.channel.epoll.LinuxSocket#joinGroup(java.net.InetAddress, java.net.NetworkInterface, java.net.InetAddress)` I'm not sure if this modification is currect, but i checked source code of java NIO ``` Java_sun_nio_ch_Net_canJoin6WithIPv4Group0(JNIEnv* env, jclass cl) { #if defined(__APPLE__) /* IPV6_ADD_MEMBERSHIP can be used to join IPv4 multicast groups */ return JNI_TRUE; #else /* IPV6_ADD_MEMBERSHIP cannot be used to join IPv4 multicast groups */ return JNI_FALSE; #endif } ``` seems ipv6 address can't join ipv4 group except osx Result: test on `Linux 3.10.0-514.el7.x86_64 #1 SMP Tue Nov 22 16:42:41 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux` exception ` setsockopt() failed: Invalid argument` has fixed Fixes #10995 |
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