public async Task Invoke(HttpContext context)
{
using (MemoryStream requestBodyStream = new MemoryStream())
{
using (MemoryStream responseBodyStream = new MemoryStream())
{
Stream originalRequestBody = context.Request.Body;
context.Request.EnableRewind();
Stream originalResponseBody = context.Response.Body;
try
{
await context.Request.Body.CopyToAsync(requestBodyStream);
requestBodyStream.Seek(0, SeekOrigin.Begin);
string requestBodyText = new StreamReader(requestBodyStream).ReadToEnd();
requestBodyStream.Seek(0, SeekOrigin.Begin);
context.Request.Body = requestBodyStream;
string responseBody = "";
context.Response.Body = responseBodyStream;
Stopwatch watch = Stopwatch.StartNew();
await _next(context);
watch.Stop();
responseBodyStream.Seek(0, SeekOrigin.Begin);
responseBody = new StreamReader(responseBodyStream).ReadToEnd();
AuditLogger.LogToAudit(context.Request.Host.Host,
context.Request.Path, context.Request.QueryString.ToString(), context.Connection.RemoteIpAddress.MapToIPv4().ToString(),
string.Join(",", context.Request.Headers.Select(he => he.Key + ":[" + he.Value + "]").ToList()),
requestBodyText, responseBody, DateTime.Now, watch.ElapsedMilliseconds);
responseBodyStream.Seek(0, SeekOrigin.Begin);
await responseBodyStream.CopyToAsync(originalResponseBody);
}
catch (Exception ex)
{
ExceptionLogger.LogToDatabse(ex);
byte[] data = System.Text.Encoding.UTF8.GetBytes("Unhandled Error occured. Please, try again in a while.");
originalResponseBody.Write(data, 0, data.Length);
}
finally
{
context.Request.Body = originalRequestBody;
context.Response.Body = originalResponseBody;
}
}
}
}