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-rw-r--r--src/shared/socket-util.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/shared/socket-util.h b/src/shared/socket-util.h
index 25c4a7e4f9..8d521ae1a0 100644
--- a/src/shared/socket-util.h
+++ b/src/shared/socket-util.h
@@ -118,3 +118,8 @@ int in_addr_prefix_intersect(unsigned family, const union in_addr_union *a, unsi
int in_addr_prefix_next(unsigned family, union in_addr_union *u, unsigned prefixlen);
int in_addr_to_string(unsigned family, const union in_addr_union *u, char **ret);
int in_addr_from_string(unsigned family, const char *s, union in_addr_union *ret);
+
+static inline size_t PROTO_ADDRESS_SIZE(int proto) {
+ assert(proto == AF_INET || proto == AF_INET6);
+ return proto == AF_INET6 ? 16 : 4;
+}