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| author | Paul Hoffman <phoffman@proper.com> | 2021-10-14 10:49:53 -0700 |
|---|---|---|
| committer | Paul Hoffman <phoffman@proper.com> | 2021-10-14 10:49:53 -0700 |
| commit | 4e38005e9d6d26ca7ddb16d4e0baf6c74ee8afa5 (patch) | |
| tree | ba942c0a41551837cc1b6b9487ca333cc2495e07 /examples | |
| parent | 41ba4f7a43f227a1871b1eff5672014738c8c371 (diff) | |
| download | dnspython-4e38005e9d6d26ca7ddb16d4e0baf6c74ee8afa5.tar.gz | |
Added examples of use_edns()
Diffstat (limited to 'examples')
| -rwxr-xr-x | examples/edns.py | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/examples/edns.py b/examples/edns.py index b398885..a130f85 100755 --- a/examples/edns.py +++ b/examples/edns.py @@ -7,30 +7,42 @@ import dns.resolver n = '.' t = dns.rdatatype.SOA -a = '199.7.83.42' # Address of l.root-servers.net +l = '199.7.83.42' # Address of l.root-servers.net +i = '149.20.1.73' # Address of ns1.isc.org, for COOKIEs q_list = [] # A query without EDNS0 -q_list.append(dns.message.make_query(n, t)) +q_list.append((l, dns.message.make_query(n, t))) # The same query, but with EDNS0 turned on with no options -q_list.append(dns.message.make_query(n, t, use_edns=0)) +q_list.append((l,dns.message.make_query(n, t, use_edns=0))) -# With an NSID option (use_edns=0 is not needed if options are specified) -q_list.append(dns.message.make_query(n, t,\ - options=[dns.edns.GenericOption(dns.edns.OptionType.NSID, b'')])) +# Use use_edns() to specify EDNS0 options, such as buffer size +this_q = dns.message.make_query(n, t) +this_q.use_edns(0, payload=2000) +q_list.append((l, this_q)) + +# With an NSID option +# use_edns=0 is not needed if options are specified) +q_list.append((l, dns.message.make_query(n, t,\ + options=[dns.edns.GenericOption(dns.edns.OptionType.NSID, b'')]))) + +# With an NSID option, but with use_edns() to specify the options +this_q = dns.message.make_query(n, t) +this_q.use_edns(0, options=[dns.edns.GenericOption(dns.edns.OptionType.NSID, b'')]) +q_list.append((l, this_q)) # With a COOKIE -q_list.append(dns.message.make_query(n, t,\ - options=[dns.edns.GenericOption(dns.edns.OptionType.COOKIE, b'0xfe11ac99bebe3322')])) +q_list.append((i, dns.message.make_query(n, t,\ + options=[dns.edns.GenericOption(dns.edns.OptionType.COOKIE, b'0xfe11ac99bebe3322')]))) # With an ECS option using dns.edns.ECSOption to form the option -q_list.append(dns.message.make_query(n, t,\ - options=[dns.edns.ECSOption('192.168.0.0', 20)])) +q_list.append((l, dns.message.make_query(n, t,\ + options=[dns.edns.ECSOption('192.168.0.0', 20)]))) -for q in q_list: - r = dns.query.udp(q, a) +for (addr, q) in q_list: + r = dns.query.udp(q, addr) if not r.options: print('No EDNS options returned') else: |