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  1. Drivers
  2. DRIVERS-2668

Add SRV test with capital letters in hostnames

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    • Needed
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      Summary of necessary driver changes
      Drivers should sync the initial-dns-seedlist-discovery spec test added in: https://github.com/mongodb/specifications/commit/82da02ba96d5d3ec4f48f6d2d4f2d0ebb1dce241

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      Summary of necessary driver changes Drivers should sync the initial-dns-seedlist-discovery spec test added in: https://github.com/mongodb/specifications/commit/82da02ba96d5d3ec4f48f6d2d4f2d0ebb1dce241
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      Key Status/Resolution FixVersion
      CDRIVER-4675 Backlog
      CXX-2709 Backlog
      CSHARP-4712 Backlog
      GODRIVER-2897 Fixed 1.14.0
      JAVA-5064 Backlog
      NODE-5439 Blocked
      MOTOR-1148 Duplicate
      PYTHON-3822 Fixed 4.7
      PHPLIB-1186 Won't Do
      RUBY-3289 Backlog
      RUST-1697 Backlog
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      New Summary

      This ticket adds a new initial-dns-seedlist-discovery spec test to ensure drivers can connect with a "mongodb+srv://" URI that contains capital letters in the SRV hostname: https://github.com/mongodb/specifications/commit/82da02ba96d5d3ec4f48f6d2d4f2d0ebb1dce241

      Although this test does not cover the bug in PYTHON-3800, it's still useful because it ensures drivers normalize the hostname before SRV+TXT lookup.

      Original Summary

      In HELP-47526 and PYTHON-3800, a bug was discovered where pymongo failed to connect to SRV hosts with capital letters. Specifically, in this section of the spec:

      A driver MUST verify that the host names returned through SRV records have the same parent {domainname}. Drivers MUST raise an error and MUST NOT initiate a connection to any returned host name which does not share the same {domainname}.

      The bug was that pymongo would normalize the {domainname} to lowercase but would not normalize the host names returned through SRV records.

      The test should use a new SRV record that resolves to a host with capital letters:

      
Record                                      TTL    Class   Port   Target
_mongodb._tcp.test25.test.build.10gen.cc.   86400  IN SRV  27017  localhost.TEST.build.10gen.cc.

      Then test that discovery works when connecting to both of the following URIs:

      mongodb+srv://test25.test.build.10gen.cc
mongodb+srv://test25.TEST.build.10gen.cc

            Assignee:
            shane.harvey@mongodb.com Shane Harvey
            Reporter:
            shane.harvey@mongodb.com Shane Harvey
            Shane Harvey Shane Harvey
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              Created:
              Updated: