SignalR: UseSignalR and UseConnections methods removed In ASP.NET Core 5.0
In ASP.NET Core 3.0, SignalR adopted endpoint routing. As part of that change, the UseSignalR, UseConnections, and some related methods were marked as obsolete.
In ASP.NET Core 5.0, those obsolete methods were removed. For the full list of methods, see Affected APIs.
see Affected APIs：https://docs.microsoft.com/en-us/dotnet/core/compatibility/aspnet-core/5.0/signalr-usesignalr-useconnections-removed#affected-apis
https://github.com/dotnet/aspnetcore/tree/main/src/SignalR/samples/SignalRSamples
Prerequisites
server configuration
OS: Windows server R2 2012
nginx:1.14.0
Application :Dot net
Framework : Asp . net core 5.x
.Net Sdks:NET Core SDK 5.x or later
Table of content
Create a web API project.
Create a SignalR hub
Configure the project to use SignalR.
Add code that sends messages from any client to all connected clients
Step 1：Create a web API project.
Step 2：Configure the project to use SignalR
nuget：Mrcrosoft.AspNetCore.SignalR
Install-Package Microsoft.AspNetCore.SignalR <PackageReference Include="Microsoft.AspNetCore.SignalR" Version="1.1.0" />Add SignalR for Web API
public void ConfigureServices(IServiceCollection services)
{
//old
// services.AddControllers();
services.AddControllers()
.AddNewtonsoftJson();
services.AddCors(options =>
{
options.AddPolicy("any",
policy => policy.AllowAnyOrigin()
.AllowAnyHeader()
.AllowAnyMethod()
.WithOrigins("http://www.iaspnetcore.com", "https://iaspnetcore.com")
.AllowCredentials());
});
//Add SignalR for Web API
services.AddSignalR()
.AddMessagePackProtocol();
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseRouting();
app.UseAuthorization();
//跨域支持
app.UseCors("any");
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
//微信小程序实时聊天集线器
endpoints.MapHub<ChatHub>("/chat");
//微信小程序行情回放集线器
endpoints.MapHub<StockTickHub>("/stocktick");
//微信小程序行情回放集线器，送分钟线和每笔成交明细供显示
endpoints.MapHub<StockReportTickReplayHub>("/StockReportTickReplay");
// endpoints.MapConnectionHandler<MessagesConnectionHandler>("/chat");
});
}