Read request body multiple times

[HakamFostok]

I am aware of the limitation that the body request can be read only a once.

here is a blog post which allows me to read it twice

The problem is this approach allows to read the body BEFORE ASP.NET Core read it

I need to read the body again AFTER ASP.NET Core read it (for Serilog)

// here is program.cs file .NET 6
app.UseSerilogRequestLogging(options =>
    options.EnrichDiagnosticContext = (diagnosticContext, httpContext) =>
    {
        // I want to read the body here from httpContext
    }
);

Can this be done? if not do you have any plan to create new API that allow the user to do that if he opt-in for it?

Thank you

[benaadams]

Change the position where you do the read to after the "next" middleware has processed, so you are on the outbound rather than inbound.

e.g. in the example in the blog

public async Task InvokeAsync(HttpContext context, RequestDelegate next)
{
    context.Request.EnableBuffering();

    // Leave the body open so the next middleware can read it.
    using (var reader = new StreamReader(
        context.Request.Body,
        encoding: Encoding.UTF8,
        detectEncodingFromByteOrderMarks: false,
        bufferSize: bufferSize,
        leaveOpen: true))
    {
        var body = await reader.ReadToEndAsync();
        // Do some processing with body…

        // Reset the request body stream position so the next middleware can read it
        context.Request.Body.Position = 0;
    }

    // Call the next delegate/middleware in the pipeline
    await next(context);
}

Change to

public async Task InvokeAsync(HttpContext context, RequestDelegate next)
{
    // Still enable buffering before anything reads
    context.Request.EnableBuffering();

    // Call the next delegate/middleware in the pipeline
    await next(context);

    // Reset the request body stream position to the start so we can read it
   context.Request.Body.Position = 0;

    // Leave the body open so the next middleware can read it.
    using (var reader = new StreamReader(
        context.Request.Body,
        encoding: Encoding.UTF8,
        detectEncodingFromByteOrderMarks: false,
        bufferSize: bufferSize,
        leaveOpen: true))
    {
        var body = await reader.ReadToEndAsync();
        // Do some processing with body…
    }
}

HTH

[HakamFostok]

Thank you,Thank you ,Thank you ,Thank you
You are the best, It worked