private static async Task <string> GetContentAsync(ContentStream stream, IDictionary <string, string[]> headers, long maxLength)
{
const string contentType = "Content-Type";
string[] value;
if (headers.TryGetValue(contentType, out value))
{
if (value != null && value.Length > 0)
{
return(await stream.ReadContentAsync(value[0], maxLength));
}
}
return(null);
}
public override async Task Invoke(IOwinContext context)
{
ContentStream requestStream = new ContentStream(new MemoryStream(), context.Request.Body);
context.Request.Body = requestStream;
ContentStream responseStream = new ContentStream(new MemoryStream(), context.Response.Body);
context.Response.Body = responseStream;
HttpEntry entry = new HttpEntry();
Action <object> callback = o =>
{
IOwinContext ctx = (IOwinContext)o;
ctx.Response.Headers.Add(_trackingHeaderName, new[]
{
entry.RequestId.ToString()
});
};
context.Response.OnSendingHeaders(callback, context);
await Next.Invoke(context);
entry.Verb = context.Request.Method;
entry.RequestUri = context.Request.Uri;
entry.RequestHeaders = context.Request.Headers;
entry.RequestLength = requestStream.ContentLength;
entry.Request = await GetContentAsync(requestStream, context.Request.Headers, _maxRequestLength);
entry.StatusCode = context.Response.StatusCode;
entry.ReasonPhrase = context.Response.ReasonPhrase;
entry.ResponseHeaders = context.Response.Headers;
entry.ResponseLength = responseStream.ContentLength;
entry.Response = await GetContentAsync(responseStream, context.Response.Headers, _maxResponseLength);
if (_whatToDo != null)
{
_whatToDo(entry);
}
}