Timeout error for AWS SNSClient Publish request

Question

Here is the piece of code :

                        //Publishing the topic
                        snsClient.Publish(new PublishRequest
                        {
                            Subject = Constants.SNSTopicMessage,
                            Message = snsMessageObj.ToString(),
                            TopicArn = Settings.TopicArn
                        });

I am getting the below error :

The underlying connection was closed: A connection that was expected to be kept alive was closed by the server.

And here is the screenshot of detailed error:

But not able to get an idea how to solve this. Any hint or link will helpful.

Answer 1

We had the exact same issue happen to us. We got this error about 40 times a day, which was less than 0.1% of the successful push notifications we sent out.

Our solution? Update the AWSSDK NuGet package from 1.5.30.1 to 2.3.52.0 (the latest v2 release for ease-of-upgrade). As soon as we updated, the errors stopped happening. I looked through lots of release notes and couldn't find anything specifically mentioning this issue. We have no idea why the update worked, but it did.

I hope this helps you and anyone else fix this issue.