DNS VALID_HOSTNAME add underline

9 years ago · 14edb58281
1 changed files with 1 additions and 1 deletions
--- a/shadowsocks/asyncdns.py
+++ b/shadowsocks/asyncdns.py
@ -35,7 +35,7 @@ from shadowsocks import common, lru_cache, eventloop, shell
 CACHE_SWEEP_INTERVAL = 30
-VALID_HOSTNAME = re.compile(br"(?!-)[A-Z\d-]{1,63}(?<!-)$", re.IGNORECASE)
+VALID_HOSTNAME = re.compile(br"(?!-)[A-Z\d_-]{1,63}(?<!-)$", re.IGNORECASE)
 common.patch_socket()