Sporadic System.Net.Http.HttpRequestException: Error while copying content to a stream.

Question

Hi,

I receive this sporadic error in subject while calling HttpClient.PostAsync(url, content). I want to make sure that this is not related to my code.

        public async Task<HttpResponseMessage> UploadPhotoAsync(string productId, MediaGallery media)
        {
            SetAuthenticationHeader();
            string url = $"{_settings.GetMagentoProductsUrl()}/{productId}/media";
            RootMedia root = new RootMedia() { Media = media };
            JsonSerializerOptions options = new()
            {
                DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull
            };
            string inData = JsonSerializer.Serialize<RootMedia>(root, options);
            HttpContent content = new StringContent(inData, Encoding.UTF8, "application/json");
            var result = await _client.PostAsync(url, content);
            if (!result.IsSuccessStatusCode)
            {
                string cont = await result.Content.ReadAsStringAsync();
                if (result.StatusCode == System.Net.HttpStatusCode.BadRequest
                                || result.StatusCode == System.Net.HttpStatusCode.Unauthorized
                                || result.StatusCode == System.Net.HttpStatusCode.InternalServerError)
                {
                    var error = MagentoError.FromJson(cont);
                    _logger.LogError($"{productId}-{media.FileContent.Name} cannot be uploaded. status code {(int)result.StatusCode} error {error?.message}");
                }

            }
            return result;
        }

Not sure why this occurs sporadically. This long stack trace points to my client.PostAsync line

System.Net.Http.HttpRequestException: Error while copying content to a stream.
---> System.IO.IOException: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host..
---> System.Net.Sockets.SocketException (10054): An existing connection was forcibly closed by the remote host.
--- End of inner exception stack trace
--- at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token)
at System.Net.Security.SslStream.<WriteSingleChunk>g__CompleteWriteAsync|177_1[TIOAdapter](ValueTask writeTask, Byte[] bufferToReturn)
at System.Net.Security.SslStream.WriteAsyncChunked[TIOAdapter](TIOAdapter writeAdapter, ReadOnlyMemory1 buffer) at System.Net.Security.SslStream.WriteAsyncInternal[TIOAdapter](TIOAdapter writeAdapter, ReadOnlyMemory1 buffer)
at System.Net.Http.HttpConnection.WriteAsync(ReadOnlyMemory`1 source, Boolean async)
at System.Net.Http.HttpContent.<CopyToAsync>g__WaitAsync|56_0(ValueTask copyTask) --- End of inner exception stack trace ---
at System.Net.Http.HttpContent.<CopyToAsync>g__WaitAsync|56_0(ValueTask copyTask)
at System.Net.Http.HttpConnection.SendRequestContentAsync(HttpRequestMessage request, HttpContentWriteStream stream, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
t System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.DiagnosticsHandler.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at Microsoft.Extensions.Http.Logging.LoggingHttpMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at Microsoft.Extensions.Http.Logging.LoggingScopeHttpMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.SendAsyncCore(HttpRequestMessage request, HttpCompletionOption completionOption, Boolean async, Boolean emitTelemetryStartStop, CancellationToken cancellationToken)

Can anyone shed some light on this?

Thanks,
Holy