diff options
Diffstat (limited to 'src/core/iomgr/socket_utils_posix.h')
| -rw-r--r-- | src/core/iomgr/socket_utils_posix.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/core/iomgr/socket_utils_posix.h b/src/core/iomgr/socket_utils_posix.h index 5c31e5e6d8..9c5d93c2b4 100644 --- a/src/core/iomgr/socket_utils_posix.h +++ b/src/core/iomgr/socket_utils_posix.h @@ -53,6 +53,16 @@ int grpc_set_socket_reuse_addr(int fd, int reuse); /* disable nagle */ int grpc_set_socket_low_latency(int fd, int low_latency); +/* Returns true if this system can create AF_INET6 sockets bound to ::1. + The value is probed once, and cached for the life of the process. + + This is more restrictive than checking for socket(AF_INET6) to succeed, + because Linux with "net.ipv6.conf.all.disable_ipv6 = 1" is able to create + and bind IPv6 sockets, but cannot connect to a getsockname() of [::]:port + without a valid loopback interface. Rather than expose this half-broken + state to library users, we turn off IPv6 sockets. */ +int grpc_ipv6_loopback_available(); + /* An enum to keep track of IPv4/IPv6 socket modes. Currently, this information is only used when a socket is first created, but |