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FreeBSD's services file contains an additional echo service entry, with

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a non-standard protocol and on a lower port than the tcp/udp entries,
which breaks the assumption that there will only be one service by a
given name on a given port when no protocol is specified.

Previous versions of this code have had other problems as a result of
different service definitions amongst common platforms.  As this platform
has an extra, unexpected, service entry, I've special cased the platform
rather than re-order the list of services checked to highlight the pitfall.
This commit is contained in:
Andrew MacIntyre 2004-07-12 12:10:30 +00:00
parent fd4984d1fc
commit 18bf43c4a4
1 changed files with 7 additions and 1 deletions
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8
Lib/test/test_socket.py
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@ -289,7 +289,13 @@ class GeneralModuleTests(unittest.TestCase):
# Find one service that exists, then check all the related interfaces. # Find one service that exists, then check all the related interfaces.
# I've ordered this by protocols that have both a tcp and udp # I've ordered this by protocols that have both a tcp and udp
# protocol, at least for modern Linuxes. # protocol, at least for modern Linuxes.
for service in ('echo', 'daytime', 'domain'): if sys.platform in ('freebsd4', 'freebsd5'):
# avoid the 'echo' service on this platform, as there is an
# assumption breaking non-standard port/protocol entry
services = ('daytime', 'qotd', 'domain')
else:
services = ('echo', 'daytime', 'domain')
for service in services:
try: try:
port = socket.getservbyname(service, 'tcp') port = socket.getservbyname(service, 'tcp')
break break