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-rw-r--r--ext/socket/raddrinfo.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/ext/socket/raddrinfo.c b/ext/socket/raddrinfo.c
index f71d0f9..9212fc2 100644
--- a/ext/socket/raddrinfo.c
+++ b/ext/socket/raddrinfo.c
@@ -1969,7 +1969,16 @@ addrinfo_unix_path(VALUE self)
*
* Similarly, PF_INET6 as family restricts for IPv6.
*
- * flags should be bitwise OR of Socket::AI_??? constants.
+ * flags should be bitwise OR of Socket::AI_??? constants such as follows.
+ * Note that the exact list of the constants depends on OS.
+ *
+ * AI_PASSIVE Get address to use with bind()
+ * AI_CANONNAME Fill in the canonical name
+ * AI_NUMERICHOST Prevent host name resolution
+ * AI_NUMERICSERV Prevent service name resolution
+ * AI_V4MAPPED Accept IPv4-mapped IPv6 addresses
+ * AI_ALL Allow all addresses
+ * AI_ADDRCONFIG Accept only if any address is assigned
*
* Note that socktype should be specified whenever application knows the usage of the address.
* Some platform causes an error when socktype is omitted and servname is specified as an integer