def ip2name(addr):
if not ip2name.resolve:
return addr
try:
if addr in ip2name.cache:
return ip2name.cache[addr]
# FIXME: Workaround Python bug
# Need double try/except to catch the bug
try:
name = gethostbyaddr(addr)[0]
except KeyboardInterrupt:
raise
except (socket_host_error, ValueError):
name = addr
except (socket_host_error, KeyboardInterrupt, ValueError):
ip2name.resolve = False
name = addr
ip2name.cache[addr] = name
return name
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