I want to read the Body of incoming requests with the help of my HttpRequestTelemetryInitializer class. Although my GetRequestHeader method works successfully, I get the following error on the

var body = reader.ReadToEndAsync().Result;

line of my GetRequestBody method.

**

ERROR: Cannot access a disposed object. Object name:
‘HttpRequestStream’.

**

What should I do about this error? Can you help me?

public class HttpRequestTelemetryInitializer : ITelemetryInitializer
{
    private const string _requestBody = "RequestBody";
    private const string _requestHeaders = "RequestHeaders";
    private readonly List<string> _skipBodyLoggingOnErrorApiList;
    private readonly List<string> _skipHeaderLoggingOnErrorApiList;
    private readonly IHttpContextAccessor _httpContextAccessor;

    public HttpRequestTelemetryInitializer(IHttpContextAccessor httpContextAccessor, IConfiguration configuration)
    {
        _httpContextAccessor = httpContextAccessor;
        _skipBodyLoggingOnErrorApiList = configuration.GetSection("HttpRequestTelemetryInitializerConfig:SkipBodyLoggingOnError").Get<List<string>>();
        _skipHeaderLoggingOnErrorApiList = configuration.GetSection("HttpRequestTelemetryInitializerConfig:SkipHeaderLoggingOnError").Get<List<string>>();
    }

    public void Initialize(ITelemetry telemetry)
    {
        try
        {
            if (telemetry == null)
                return;

            if (telemetry is RequestTelemetry requestTelemetry)
            {
                var httpContext = _httpContextAccessor.HttpContext;
                if (httpContext == null || httpContext.Request == null)
                    return;

                var request = httpContext.Request;
                if (request.Method == HttpMethod.Post.Method ||
                    request.Method == HttpMethod.Put.Method ||
                    request.Method == "PATCH")
                {
                    if (!_skipBodyLoggingOnErrorApiList.Any(url => request.Path.Value.Contains(url)))
                    {
                        requestTelemetry.Properties.Add(_requestBody, GetRequestBody(request));
                    }

                    if (!_skipHeaderLoggingOnErrorApiList.Any(url => request.Path.Value.Contains(url)))
                    {
                        requestTelemetry.Properties.Add(_requestHeaders, GetRequestHeaders(request));
                    }
                }
            }
        }
        catch
        {
        }
    }

    private string GetRequestHeaders(HttpRequest request)
    {
        using var writer = new StringWriter();
        foreach (var header in request.Headers)
        {
            writer.WriteLine($"{header.Key}: {header.Value}");
        }
        writer.WriteLine();

        return writer.ToString();
    }

    private string GetRequestBody(HttpRequest request)
    {
        request.EnableBuffering();
        var reader = new StreamReader(request.Body);
        var body = reader.ReadToEndAsync().Result;
        request.Body.Position = 0;
        return body;
    }
}

Startup.cs:

services.AddApplicationInsightsTelemetry();
services.AddSingleton<ITelemetryInitializer, HttpRequestTelemetryInitializer>();