public async Task <IHttpActionResult> Putipn(long id, ipn ipn)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != ipn.id)
            {
                return(BadRequest());
            }

            db.Entry(ipn).State = EntityState.Modified;

            try
            {
                await db.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!ipnExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(StatusCode(HttpStatusCode.NoContent));
        }
        public async Task <IHttpActionResult> Getipn(long id)
        {
            ipn ipn = await db.Ipns.FindAsync(id);

            if (ipn == null)
            {
                return(NotFound());
            }

            return(Ok(ipn));
        }
        public async Task <IHttpActionResult> Postipn(ipn ipn)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            db.Ipns.Add(ipn);
            await db.SaveChangesAsync();

            return(CreatedAtRoute("DefaultApi", new { id = ipn.id }, ipn));
        }
        public async Task <IHttpActionResult> Deleteipn(long id)
        {
            ipn ipn = await db.Ipns.FindAsync(id);

            if (ipn == null)
            {
                return(NotFound());
            }

            db.Ipns.Remove(ipn);
            await db.SaveChangesAsync();

            return(Ok(ipn));
        }