How can I get the request payload?

[jacksonlancaster]

IHttpContext context.Request.Payload was available in 4.2 version.
But it seems to have been removed.
How do I go about getting the request payload?

I tried this code below. Sometimes it works. Sometimes it doesn't return any data (even when the content-length is greater than 0.

using var reader = new StreamReader(context.Request.InputStream, context.Request.ContentEncoding);
var payload = await reader.ReadToEndAsync();

[scottoffen]

HttpRequest.InputStream is the correct property to get the payload from. However, because this is a wrapper class for HttpListenerRequest, the underlying stream is read-once, and the position cannot be reset.

In v4.x and lower, I would read this as a string into the Payload property, but this was problematic for the same reason that it would be problematic to read the InputStream into a MemoryStream - when your dealing with large inputs, this could cause resource issues.

v5.x doesn't have a better solution for this currently. If you need the payload to be available during multiple routes, I would recommend deserializing it and adding to the context.Locals collection.

[cuican6]

Is it feasible to create a body attribute that reads data from the stream when the body is first retrieved, and then retrieves the body using the read cache in the body.