serilog-enrichers-clientinfo 
Enrich logs with client IP and UserAgent.
Install the Serilog.Enrichers.ClientInfo NuGet package
Install-Package Serilog.Enrichers.ClientInfoor
dotnet add package Serilog.Enrichers.ClientInfoApply the enricher to your LoggerConfiguration in code:
Log.Logger = new LoggerConfiguration()
.Enrich.WithClientIp()
.Enrich.WithClientAgent()
// ...other configuration...
.CreateLogger();or in appsettings.json file:
{
"Serilog": {
"MinimumLevel": "Debug",
"Using": [ "Serilog.Enrichers.ClientInfo" ],
"Enrich": [ "WithClientIp", "WithClientAgent"],
"WriteTo": [
{ "Name": "Console" }
]
}
}The WithClientIp() enricher will add a ClientIp property and the WithClientAgent() enricher will add a ClientAgent property to produced events.
Installing into an ASP.NET Core Web Application
You need to register the IHttpContextAccessor singleton so the enrichers have access to the requests HttpContext to extract client IP and client agent.
This is what your Startup class should contain in order for this enricher to work as expected:
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Serilog;
namespace MyWebApp
{
public class Startup
{
public Startup()
{
Log.Logger = new LoggerConfiguration()
.MinimumLevel.Debug()
.WriteTo.Console(outputTemplate: "[{Timestamp:HH:mm:ss} {Level:u3} {ClientIp} {ClientAgent}] {Message:lj}{NewLine}{Exception}")
.Enrich.WithClientIp()
.Enrich.WithClientAgent()
.CreateLogger();
}
// This method gets called by the runtime. Use this method to add services to the container.
// For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
// ...
services.AddHttpContextAccessor();
// ...
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
// ...
loggerFactory.AddSerilog();
// ...
}
}
}