To be able to rewind the request body, @Jean's answer helped me come up with a solution that seems to work well. I currently use this for Global Exception Handler Middleware but the principle is the same.
I created a middleware that basically enables the rewind on the request body (instead of a decorator).
using Microsoft.AspNetCore.Http.Internal;
[...]
public class EnableRequestRewindMiddleware
{
private readonly RequestDelegate _next;
public EnableRequestRewindMiddleware(RequestDelegate next)
{
_next = next;
}
public async Task Invoke(HttpContext context)
{
context.Request.EnableRewind();
await _next(context);
}
}
public static class EnableRequestRewindExtension
{
public static IApplicationBuilder UseEnableRequestRewind(this IApplicationBuilder builder)
{
return builder.UseMiddleware<EnableRequestRewindMiddleware>();
}
}
This can then be used in your Startup.cs like so:
[...]
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
[...]
app.UseEnableRequestRewind();
[...]
}
Using this approach, I have been able to rewind the request body stream successfully.