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make loops in DNSResolver less nested

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This commit is contained in:
ahxxm 2016-09-06 10:26:27 +08:00
parent 8bb90bc02f
commit 477caf3c80
1 changed files with 23 additions and 16 deletions
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17
shadowsocks/asyncdns.py
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@ -276,10 +276,13 @@ class DNSResolver(object):
content = f.readlines() content = f.readlines()
for line in content: for line in content:
line = line.strip() line = line.strip()
if line: if not line and line.startswith(b'nameserver'):
if line.startswith(b'nameserver'): continue
parts = line.split() parts = line.split()
if len(parts) >= 2: if len(parts) < 2:
continue
server = parts[1] server = parts[1]
if common.is_ip(server) == socket.AF_INET: if common.is_ip(server) == socket.AF_INET:
if type(server) != str: if type(server) != str:
@ -299,9 +302,13 @@ class DNSResolver(object):
for line in f.readlines(): for line in f.readlines():
line = line.strip() line = line.strip()
parts = line.split() parts = line.split()
if len(parts) >= 2: if len(parts) < 2:
continue
ip = parts[0] ip = parts[0]
if common.is_ip(ip): if not common.is_ip(ip):
continue
for i in range(1, len(parts)): for i in range(1, len(parts)):
hostname = parts[i] hostname = parts[i]
if hostname: if hostname: