RestSharp Timeout not working

Question

I have a restsharp client and request set up like this:

var request = new RestRequest();
request.Method = Method.POST;
request.AddParameter("application/json", jsonBody, ParameterType.RequestBody);
request.OnBeforeDeserialization = resp => { resp.ContentType = "application/json"; };
request.Timeout = -1;
request.ReadWriteTimeout = -1;
var url = $"http://{ipAddress}/api/calculate";
var client = new RestClient();
client.BaseUrl = new Uri(url);
client.Timeout = -1;
client.ReadWriteTimeout = -1;
var response = client.Execute(request);

This request is going to take a while to finish, around 30 minutes. Now, I know that there are more elegant ways of doing this, but, for this request, I need to do it like this.

This RestSharp client and request are executed inside Windows service. When service executes request, it throws TimoutException and request maximum timeout is around 40 seconds.

For some reason, timeout that I set is not working for this case.

Anybody has a solution for this?

Answer 1

You may not be doing what you think by setting the ReadWriteTimeout value. Your value is ignored so you get the default.

According to this answer What is default timeout value of RestSharp RestClient? RestSharp uses HttpWebRequest in its implementation.

The timeout property for HttpWebRequest cannot be negative HttpWebRequest.Timeout Property.

If you look in the RestSharp client code you see this: https://github.com/restsharp/RestSharp/blob/70de357b0b9dfc3926c95d1e69967c7a7cbe874c/RestSharp/RestClient.cs#L452

        int readWriteTimeout = request.ReadWriteTimeout > 0
            ? request.ReadWriteTimeout
            : this.ReadWriteTimeout;

        if (readWriteTimeout > 0)
        {
            http.ReadWriteTimeout = readWriteTimeout;
        }