91 lines
3.1 KiB
C#
91 lines
3.1 KiB
C#
#define UseOptions // or NoOptions
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net.WebSockets;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Http;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Logging;
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namespace EchoApp
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{
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public class Startup
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{
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// This method gets called by the runtime. Use this method to add services to the container.
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// For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
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public void ConfigureServices(IServiceCollection services)
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{
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}
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// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
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public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
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{
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loggerFactory.AddConsole(LogLevel.Debug);
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loggerFactory.AddDebug(LogLevel.Debug);
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if (env.IsDevelopment())
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{
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app.UseDeveloperExceptionPage();
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}
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#if NoOptions
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#region UseWebSockets
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app.UseWebSockets();
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#endregion
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#endif
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#if UseOptions
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#region UseWebSocketsOptions
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var webSocketOptions = new WebSocketOptions()
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{
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KeepAliveInterval = TimeSpan.FromSeconds(120),
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ReceiveBufferSize = 4 * 1024
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};
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app.UseWebSockets(webSocketOptions);
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#endregion
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#endif
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#region AcceptWebSocket
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app.Use(async (context, next) =>
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{
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if (context.Request.Path == "/ws")
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{
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if (context.WebSockets.IsWebSocketRequest)
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{
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WebSocket webSocket = await context.WebSockets.AcceptWebSocketAsync();
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await Echo(context, webSocket);
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}
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else
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{
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context.Response.StatusCode = 400;
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}
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}
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else
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{
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await next();
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}
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});
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#endregion
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app.UseFileServer();
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}
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#region Echo
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private async Task Echo(HttpContext context, WebSocket webSocket)
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{
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var buffer = new byte[1024 * 4];
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WebSocketReceiveResult result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
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while (!result.CloseStatus.HasValue)
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{
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await webSocket.SendAsync(new ArraySegment<byte>(buffer, 0, result.Count), result.MessageType, result.EndOfMessage, CancellationToken.None);
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result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
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}
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await webSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
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}
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#endregion
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}
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}
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