使用 Docker 在 Ubuntu 中部署 SignalR 服务器

Question

我正在尝试在 docker 中部署 signalR 服务器。如果没有 docker，则与本地的测试客户端连接。但现在它显示 Cors 错误并且无法从本地客户端连接

我的程序.cs

using chat_server.Hubs;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddCors(p => p.AddPolicy("corsPolicy", build =>
{
    build.WithOrigins("http://[serverIP]:8100", "https://[serverIP]:8100", "http://[serverIP]:80", "https://[serverIP]:80")
    .AllowAnyHeader()
    .AllowAnyMethod()
    .AllowCredentials();
}));

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
builder.Services.AddSignalR();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseCors("corsPolicy");

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.MapHub<ChatHub>("/chathub");

app.Run();

我的 Dockerfile

FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
WORKDIR /app
EXPOSE 8100
EXPOSE 443

FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /src
COPY ["chat_server.csproj", "."]
RUN dotnet restore "./chat_server.csproj"
COPY . .
WORKDIR "/src/."
RUN dotnet build "chat_server.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "chat_server.csproj" -c Release -o /app/publish /p:UseAppHost=false

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "chat_server.dll"]

我的演示客户端连接字符串，从本地运行

const connection = new signalR.HubConnectionBuilder()
            .withUrl("http://[serverIP]:8100/chathub")  // Update with your hub URL
            .build();

从控制台我遇到的问题是

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://185.100.232.17:8100/chathub/negotiate?negotiateVersion=1. (Reason: CORS request did not succeed). Status code: (null)

Answer 1

我自己解决了这个问题

更改了 Program.cs ，如

app.UseCors(cp => cp
    .AllowAnyHeader()
    .SetIsOriginAllowed(origin => true)
    .AllowCredentials());

docker运行命令是

docker run -d -p 8100:8100 --name [docker_name] [image_name]