stubbing out SSL support for MQTT clients

[Aaronontheweb]

No description provided.

[Aaronontheweb]

Ouch, migrating to use NetworkStream hurts:

BenchmarkDotNet v0.13.12, Windows 11 (10.0.22631.3593/23H2/2023Update/SunValley3)
12th Gen Intel Core i7-1260P, 1 CPU, 16 logical and 12 physical cores
.NET SDK 8.0.204
  [Host]     : .NET 8.0.4 (8.0.424.16909), X64 RyuJIT AVX2
  Job-YJPWNC : .NET 8.0.4 (8.0.424.16909), X64 RyuJIT AVX2

InvocationCount=1  LaunchCount=10  RunStrategy=Monitoring  
UnrollFactor=1  WarmupCount=10  

Method	QoSLevel	PayloadSizeBytes	ProtocolVersion	Mean	Error	StdDev	Median	Req/sec
PublishAndReceiveMessages	AtMostOnce	10	V3_1_1	5.265 μs	0.6731 μs	1.985 μs	4.544 μs	189,944.65
PublishAndReceiveMessages	AtMostOnce	1024	V3_1_1	5.485 μs	0.5596 μs	1.650 μs	4.953 μs	182,305.78
PublishAndReceiveMessages	AtMostOnce	2048	V3_1_1	5.875 μs	0.5331 μs	1.572 μs	5.402 μs	170,205.06
PublishAndReceiveMessages	AtMostOnce	8192	V3_1_1	13.372 μs	2.5067 μs	7.391 μs	10.127 μs	74,785.86
PublishAndReceiveMessages	AtLeastOnce	10	V3_1_1	24.939 μs	1.5192 μs	4.479 μs	24.873 μs	40,097.67
PublishAndReceiveMessages	AtLeastOnce	1024	V3_1_1	26.693 μs	1.1794 μs	3.477 μs	25.668 μs	37,463.44
PublishAndReceiveMessages	AtLeastOnce	2048	V3_1_1	27.683 μs	1.3599 μs	4.010 μs	26.547 μs	36,123.33
PublishAndReceiveMessages	AtLeastOnce	8192	V3_1_1	34.313 μs	2.1881 μs	6.452 μs	33.542 μs	29,143.74
PublishAndReceiveMessages	ExactlyOnce	10	V3_1_1	43.528 μs	5.3992 μs	15.920 μs	40.024 μs	22,973.47
PublishAndReceiveMessages	ExactlyOnce	1024	V3_1_1	42.648 μs	1.7563 μs	5.179 μs	40.913 μs	23,447.57
PublishAndReceiveMessages	ExactlyOnce	2048	V3_1_1	45.091 μs	2.2608 μs	6.666 μs	42.253 μs	22,177.31
PublishAndReceiveMessages	ExactlyOnce	8192	V3_1_1	49.322 μs	3.5218 μs	10.384 μs	49.772 μs	20,274.77

[Aaronontheweb]

Better:

BenchmarkDotNet v0.13.12, Windows 11 (10.0.22631.3593/23H2/2023Update/SunValley3)
12th Gen Intel Core i7-1260P, 1 CPU, 16 logical and 12 physical cores
.NET SDK 8.0.204
  [Host]     : .NET 8.0.4 (8.0.424.16909), X64 RyuJIT AVX2
  Job-CARWZE : .NET 8.0.4 (8.0.424.16909), X64 RyuJIT AVX2

InvocationCount=1  LaunchCount=10  RunStrategy=Monitoring  
UnrollFactor=1  WarmupCount=10  

Method	QoSLevel	PayloadSizeBytes	ProtocolVersion	Mean	Error	StdDev	Median	Req/sec
PublishAndReceiveMessages	AtMostOnce	10	V3_1_1	5.128 μs	0.5400 μs	1.592 μs	4.441 μs	195,022.25
PublishAndReceiveMessages	AtMostOnce	1024	V3_1_1	5.197 μs	0.4721 μs	1.392 μs	4.712 μs	192,412.56
PublishAndReceiveMessages	AtMostOnce	2048	V3_1_1	6.252 μs	0.7182 μs	2.118 μs	5.483 μs	159,936.24
PublishAndReceiveMessages	AtMostOnce	8192	V3_1_1	13.365 μs	2.5672 μs	7.569 μs	10.174 μs	74,822.54
PublishAndReceiveMessages	AtLeastOnce	10	V3_1_1	25.315 μs	1.4154 μs	4.173 μs	24.175 μs	39,501.64
PublishAndReceiveMessages	AtLeastOnce	1024	V3_1_1	25.392 μs	0.9990 μs	2.946 μs	24.932 μs	39,383.19
PublishAndReceiveMessages	AtLeastOnce	2048	V3_1_1	28.964 μs	1.5013 μs	4.427 μs	27.305 μs	34,525.72
PublishAndReceiveMessages	AtLeastOnce	8192	V3_1_1	64.682 μs	101.0053 μs	297.816 μs	35.865 μs	15,460.16
PublishAndReceiveMessages	ExactlyOnce	10	V3_1_1	43.735 μs	2.2918 μs	6.757 μs	40.103 μs	22,865.19
PublishAndReceiveMessages	ExactlyOnce	1024	V3_1_1	47.098 μs	5.2635 μs	15.520 μs	44.192 μs	21,232.50
PublishAndReceiveMessages	ExactlyOnce	2048	V3_1_1	46.505 μs	5.1802 μs	15.274 μs	42.894 μs	21,503.02
PublishAndReceiveMessages	ExactlyOnce	8192	V3_1_1	50.985 μs	2.1129 μs	6.230 μs	49.024 μs	19,613.49

[Aaronontheweb]

Some sort of encoding issue creeped its way into the transport here:

// BeforeAnythingElse                                                                                        
                                                                                                             
// Benchmark Process Environment Information:                                                                
// BenchmarkDotNet v0.13.12                                                                                  
// Runtime=.NET 8.0.4 (8.0.424.16909), X64 RyuJIT AVX2                                                       
// GC=Concurrent Workstation                                                                                 
// HardwareIntrinsics=AVX2,AES,BMI1,BMI2,FMA,LZCNT,PCLMUL,POPCNT,AvxVnni,SERIALIZE VectorSize=256            
// Job: Job-FLDEAO(InvocationCount=1, LaunchCount=10, RunStrategy=Monitoring, UnrollFactor=1, WarmupCount=10)
                                                                                                             
Error writing to client.                                                                                     
Failed to write [8] packets [32972 bytes] to transport.                                                      
Error writing to client.                                                                                     
Failed to write [62] packets [255533 bytes] to transport.                                                    
WorkloadWarmup   1: 2000 op, 5926793600.00 ns, 2.9634 ms/op                                                  
Error writing to client.                                                                                     
Failed to write [88] packets [362692 bytes] to transport.                                                    
WorkloadWarmup   2: 2000 op, 6007833100.00 ns, 3.0039 ms/op                                                  
Error writing to client.                                                                                     
Failed to write [8] packets [32972 bytes] to transport.                                                      
WorkloadWarmup   3: 2000 op, 6001818400.00 ns, 3.0009 ms/op                                                  
Error writing to client.                                                                                     
Failed to write [8] packets [32972 bytes] to transport.                                                      
Error writing to client.                                                                                     
Failed to write [64] packets [263776 bytes] to transport.                                                    

[CLAassistant]

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