[#102] Handle broken pipe errors gracefully in opine

[cmorten]

Issue

Fixes #102

Details

• Handle broken pipe errors when end requests + at server iterator level.
• Emit errors rather than closing the server.

CheckList

• PR starts with [#ISSUE_ID].
• Has been tested (where required).

[github-actions]

Benchmark results

PR to merge fix/issue-102-broken-pipe 75af232 -> main

opine: 1 middleware
================================

1 middleware
Running 3s test @ http://localhost:3333/?foo[bar]=baz
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     2.81ms  750.78us  18.40ms   89.71%
    Req/Sec     1.79k   267.98     2.07k    82.81%
  Latency Distribution
     50%    2.51ms
     75%    2.88ms
     90%    3.58ms
     99%    5.91ms
  11450 requests in 3.21s, 1.66MB read
Requests/sec:   3566.07
Transfer/sec:    529.34KB

opine: 10 middleware
================================

10 middleware
Running 3s test @ http://localhost:3333/?foo[bar]=baz
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     2.76ms  753.65us  19.25ms   91.21%
    Req/Sec     1.82k   283.11     2.09k    87.10%
  Latency Distribution
     50%    2.49ms
     75%    2.81ms
     90%    3.35ms
     99%    5.76ms
  11323 requests in 3.12s, 1.64MB read
Requests/sec:   3625.65
Transfer/sec:    538.18KB

opine: 50 middleware
================================

50 middleware
Running 3s test @ http://localhost:3333/?foo[bar]=baz
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     3.53ms    1.07ms  26.05ms   90.35%
    Req/Sec     1.43k   196.61     1.64k    85.48%
  Latency Distribution
     50%    3.17ms
     75%    3.61ms
     90%    4.57ms
     99%    8.10ms
  8874 requests in 3.11s, 1.29MB read
Requests/sec:   2849.23
Transfer/sec:    422.93KB

native_http benchmark
================================

Server listening on localhost:3333
Running 3s test @ http://localhost:3333/?foo[bar]=baz
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency   494.02us  145.16us   6.65ms   94.71%
    Req/Sec    10.12k     0.89k   10.71k    90.62%
  Latency Distribution
     50%  465.00us
     75%  481.00us
     90%  519.00us
     99%    1.07ms
  64472 requests in 3.20s, 5.35MB read
Requests/sec:  20150.65
Transfer/sec:      1.67MB

std/http benchmark
================================

http://localhost:3333/
Running 3s test @ http://localhost:3333/?foo[bar]=baz
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     1.17ms  317.71us  10.21ms   91.83%
    Req/Sec     4.28k   566.94     4.72k    87.50%
  Latency Distribution
     50%    1.07ms
     75%    1.13ms
     90%    1.37ms
     99%    2.41ms
  27241 requests in 3.20s, 2.88MB read
Requests/sec:   8512.02
Transfer/sec:      0.90MB

deno_http_native benchmark
================================

Server listening on localhost:3333
Running 3s test @ http://localhost:3333/?foo[bar]=baz
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency   462.27us  142.93us   3.97ms   94.62%
    Req/Sec    10.86k     0.97k   11.65k    93.55%
  Latency Distribution
     50%  433.00us
     75%  452.00us
     90%  492.00us
     99%    1.05ms
  67002 requests in 3.10s, 5.56MB read
Requests/sec:  21614.25
Transfer/sec:      1.79MB