[Http.Resilience] Add support of the HTTP resilience for synchronous HttpClient requests

[iliar-turdushev]

The PR adds support of the HTTP resilience for synchronous HttpClient requests. This is achieved by implementing a synchronous method Send in the ResilienceHandler.

Microsoft Reviewers: Open in CodeFlow

Resolves #5236

[RussKie]

👍

[iliar-turdushev]

Added StandardResilience and Retry benchmarks for synchronous HttpClient requests. In summary,

• Benchmarks for asynchronous HttpClient requests (existing functionality) haven't changed. Benchmarks for Polly v8 are worse than for Polly v7 though.
• Benchmarks for synchronous HttpClient requests (new functionality) are a little bit better than asynchronous Polly v8 benchmarks.

StandardResilience benchmarks

Current version (WITHOUT support of synchronous requests)

|                    Method |     Mean |     Error |    StdDev | Ratio | RatioSD |   Gen0 | Allocated | Alloc Ratio |
|-------------------------- |---------:|----------:|----------:|------:|--------:|-------:|----------:|------------:|
| StandardPipeline_Polly_V7 | 2.999 us | 0.1279 us | 0.1915 us |  1.00 |    0.00 | 0.4463 |    3736 B |        1.00 |
| StandardPipeline_Polly_V8 | 3.295 us | 0.1321 us | 0.1895 us |  1.11 |    0.10 | 0.1183 |    1008 B |        0.27 |

New version (WITH support of synchronous requests)

|                         Method |     Mean |     Error |    StdDev | Ratio | RatioSD |   Gen0 | Allocated | Alloc Ratio |
|------------------------------- |---------:|----------:|----------:|------:|--------:|-------:|----------:|------------:|
|      StandardPipeline_Polly_V7 | 2.709 us | 0.0199 us | 0.0266 us |  1.00 |    0.00 | 0.4463 |    3736 B |        1.00 |
|      StandardPipeline_Polly_V8 | 3.150 us | 0.0749 us | 0.1050 us |  1.16 |    0.03 | 0.1183 |    1008 B |        0.27 |
| StandardPipeline_Polly_V8_Sync | 3.018 us | 0.0495 us | 0.0726 us |  1.12 |    0.03 | 0.1030 |     864 B |        0.23 |

Retry benchmarks

Current version (WITHOUT support of synchronous requests)

|         Method |       Mean |    Error |    StdDev |     Median | Ratio | RatioSD |   Gen0 | Allocated | Alloc Ratio |
|--------------- |-----------:|---------:|----------:|-----------:|------:|--------:|-------:|----------:|------------:|
| Retry_Polly_V7 |   935.5 ns | 68.30 ns | 102.23 ns |   876.4 ns |  1.00 |    0.00 | 0.1602 |    1344 B |        1.00 |
| Retry_Polly_V8 | 1,333.1 ns | 64.91 ns |  95.14 ns | 1,310.6 ns |  1.45 |    0.22 | 0.0973 |     824 B |        0.61 |

New version (WITH support of synchronous requests)

|              Method |       Mean |    Error |   StdDev | Ratio | RatioSD |   Gen0 | Allocated | Alloc Ratio |
|-------------------- |-----------:|---------:|---------:|------:|--------:|-------:|----------:|------------:|
|      Retry_Polly_V7 |   837.9 ns | 23.20 ns | 31.76 ns |  1.00 |    0.00 | 0.1602 |    1344 B |        1.00 |
|      Retry_Polly_V8 | 1,222.3 ns | 26.05 ns | 34.77 ns |  1.46 |    0.08 | 0.0973 |     824 B |        0.61 |
| Retry_Polly_V8_Sync | 1,062.4 ns |  3.27 ns |  4.58 ns |  1.27 |    0.05 | 0.0801 |     680 B |        0.51 |

[eduherminio]

LGTM