server: set latestResponse before sending response

[snowp]

By setting the latest response prior to sending the response we guarantee that the map is updated by the time the corresponding request arrives. This ensures that the nonce check correctly uses the most recent response.

Fixes #70

[snowp]

@dcrn fyi. This should hopefully solve the issue without additional logging

[codecov-io]

Codecov Report

Merging #71 into master will increase coverage by 0.01%. The diff coverage is 100%.

@@             Coverage Diff              @@
##             master      #71      +/-   ##
============================================
+ Coverage     95.21%   95.22%   +0.01%     
  Complexity      112      112              
============================================
  Files            12       12              
  Lines           439      440       +1     
  Branches         38       38              
============================================
+ Hits            418      419       +1     
  Misses           14       14              
  Partials          7        7

Impacted Files	Coverage Δ	Complexity Δ
...nvoyproxy/controlplane/server/DiscoveryServer.java	97.72% <100%> (+0.02%)	9 <0> (ø)	:arrow_down:

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[joeyb]

After merging this, I'll go ahead and push out a new release with these changes.

[dcrn]

Thanks @snowp !