udp: symmetric encrypted cookie

[da2ce7]

Implement a simple symmetrically encrypted connection id to be used as a cookie for authenticating announce requests.

I have taken some time to optimize the implementation, hopefully it will preform the same as the previous approach.

[codecov]

Codecov Report

Attention: Patch coverage is 92.60700% with 19 lines in your changes missing coverage. Please review.

Project coverage is 76.44%. Comparing base (0e340bf) to head (c53e289).
Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/servers/udp/connection_cookie.rs	92.13%	6 Missing and 1 partial ⚠️
src/bootstrap/app.rs	0.00%	6 Missing ⚠️
src/shared/crypto/keys.rs	84.84%	5 Missing ⚠️
packages/configuration/src/v2_0_0/udp_tracker.rs	75.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1091      +/-   ##
===========================================
- Coverage    77.14%   76.44%   -0.70%     
===========================================
  Files          174      174              
  Lines        11750    11488     -262     
  Branches     11750    11488     -262     
===========================================
- Hits          9064     8782     -282     
- Misses        2488     2507      +19     
- Partials       198      199       +1     

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[josecelano]

Hi @da2ce7 It looks good to me. I have only added some minor suggestions.

Regarding performance, it seems it hasn't changed.

This PR

Worst case:

Requests out: 425928.00/second
Responses in: 403889.28/second
  - Connect responses:  199933.64
  - Announce responses: 199936.23
  - Scrape responses:   4019.41
  - Error responses:    0.00
Peers per announce response: 0.00
Announce responses per info hash:
  - p10: 1
  - p25: 1
  - p50: 1
  - p75: 1
  - p90: 2
  - p95: 3
  - p99: 105
  - p99.9: 323
  - p100: 407

Best case:

Requests out: 492705.64/second
Responses in: 415447.68/second
  - Connect responses:  205609.94
  - Announce responses: 205718.08
  - Scrape responses:   4119.67
  - Error responses:    0.00
Peers per announce response: 0.00
Announce responses per info hash:
  - p10: 1
  - p25: 1
  - p50: 1
  - p75: 1
  - p90: 2
  - p95: 3
  - p99: 105
  - p99.9: 331
  - p100: 429

Base branch

Worst case:

Requests out: 416133.96/second
Responses in: 379643.54/second
  - Connect responses:  188013.86
  - Announce responses: 187883.50
  - Scrape responses:   3745.38
  - Error responses:    0.80
Peers per announce response: 0.00
Announce responses per info hash:
  - p10: 1
  - p25: 1
  - p50: 1
  - p75: 1
  - p90: 2
  - p95: 3
  - p99: 104
  - p99.9: 305
  - p100: 389

Best case:

Requests out: 539571.74/second
Responses in: 448536.20/second
  - Connect responses:  222046.78
  - Announce responses: 222037.22
  - Scrape responses:   4452.20
  - Error responses:    0.00
Peers per announce response: 0.00
Announce responses per info hash:
  - p10: 1
  - p25: 1
  - p50: 1
  - p75: 1
  - p90: 2
  - p95: 3
  - p99: 104
  - p99.9: 353
  - p100: 455

NOTE: this best case is not common.

[josecelano]

Hi @da2ce7 some tests are not passing after these latest changes.

[josecelano]

ACK c53e289