View POST request body in Application Insights

Question

Is it possible to view POST request body in Application Insights?

I can see request details, but not the payload being posted in application insights. Do I have to t

Answer 1

I never got @yonisha's answer working so I used a DelegatingHandler instead:

public class MessageTracingHandler : DelegatingHandler
{
    protected override async Task SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    {
        // Trace the request
        await TraceRequest(request);

        // Execute the request
        var response = await base.SendAsync(request, cancellationToken);

        // Trace the response
        await TraceResponse(response);

        return response;
    }

    private async Task TraceRequest(HttpRequestMessage request)
    {
        try
        {
            var requestTelemetry = HttpContext.Current?.GetRequestTelemetry();

            var requestTraceInfo = request.Content != null ? await request.Content.ReadAsByteArrayAsync() : null;

            var body = requestTraceInfo.ToString();

            if (!string.IsNullOrWhiteSpace(body) && requestTelemetry != null)
            {
                requestTelemetry.Properties.Add("Request Body", body);
            }
        }
        catch (Exception exception)
        {
            // Log exception
        }
    }

    private async Task TraceResponse(HttpResponseMessage response)
    {
        try
        {
            var requestTelemetry = HttpContext.Current?.GetRequestTelemetry();

            var responseTraceInfo = response.Content != null ? await response.Content.ReadAsByteArrayAsync() : null;

            var body = responseTraceInfo.ToString();

            if (!string.IsNullOrWhiteSpace(body) && requestTelemetry != null)
            {
                requestTelemetry.Properties.Add("Response Body", body); 
            }
        }
        catch (Exception exception)
        {
            // Log exception
        }
    }
}

.GetRequestTelemetry() is an extension method from Microsoft.ApplicationInsights.Web.