Commits on Jun 17, 2020

1. quic: temporarily disable preferred address tests …

   The way the preferred address mechanism is supposed to work
   is this: A server might be exposed via multiple network
   interfaces / addresses. The preferred address is the one that
   clients should use. If a client uses one of the non-preferred
   addresses to initially connect to the server, the server will
   include the preferred address in it's initial transport params
   back to the client over the original connection. The client
   then can make a choice: it can either choose to ignore the
   advertised preferred address and continue using the original,
   or it can transition the in-flight connection to the preferred
   address without having to restart the connection. In the latter
   case, the connection will start making use of the preferred
   address but it might not do so immediately.
   
   To test this mechanism properly, we should have our server
   configured on multiple endpoints with one of those marked
   as the preferred. The connection should start on one and preceed
   uninterrupted to completion. If the preferred address policy
   is "accept", the client will accept and transition to the servers
   preferred address transparently, without interupting the flow.
   
   The current test is deficient because the server is only listening
   on a single address which is also advertised as the preferred.
   While the client should get the advertisement, we're not actually
   making use of the preferred address advertisement and nothing on
   the connection changes
   
   The ipv6 version of the test is also hanging on some platforms and
   it's not entirely clear why yet.

   

   jasnell committed Jun 17, 2020
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