Use `RetryPolicy` to keep SignalR connection alive and replace `List<RealtimeData>` with `ImmutableList<RealtimeData>` #21

	name: .NET Build

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository and submodules
	uses: actions/checkout@v2
	with:
	submodules: recursive
	- name: Setup .NET
	uses: actions/setup-dotnet@v1
	with:
	dotnet-version: 6.0.x
	- name: Restore dependencies
	run: dotnet restore
	- name: Build
	run: dotnet build --no-restore
	- name: Test
	run: dotnet test server.Tests/PathApi.Server.Tests.csproj /p:CollectCoverage=true /p:CoverletOutputFormat=opencover /p:CoverletOutput="`pwd`/"
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v2
	with:
	directory: ./
	env_vars: OS,PYTHON
	fail_ci_if_error: true
	files: ./coverage.opencover.xml
	flags: unittests
	name: codecov-umbrella
	path_to_write_report: ./coverage/codecov_report.txt
	verbose: true

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