Posting GZip content using RestSharp - gzip

Question

How do I post GZip data using RestSharp. I have the following code but it isn't working as I would expect:
var restRequest = new RestRequest(url, Method.POST)
{
Timeout = Constants.DefaultTimeoutMilliseconds
};
var dataStream = new MemoryStream();
using (var zipStream = new GZipStream(dataStream, CompressionMode.Compress))
{
using (var writer = new StreamWriter(zipStream))
{
writer.Write(new DotNetXmlSerializer().Serialize(content));
}
}
var compressedBytes = dataStream.ToArray();
restRequest.AddParameter("application/x-gzip", compressedBytes, ParameterType.RequestBody);
return _restClient.Execute<TResponseData>(restRequest);
When I run this and check the wireshark trace, the compressedBytes variable is posted as
'System.Byte[]' - as if ToString() has been called on it despite the parameter being a system.object.
If I pass the compressed byte array through as a string using both Convert.ToBase64String() and Encoding.Utf8.GetString() then I am unable to decompress the GZip at the server. I simply get 'System.IO.InvalidDataException: The magic number in GZip header is not correct. Make sure you are passing in a GZip'.
Is there any way of posting Gzipped data using RestSharp?

Answer 1

Make sure you've updated to the latest version of RestSharp (like 104.4.0) as this was a bug in a previous version.
I think this was fixed in 104.2 where the PUT or POST of binary data ended up with the System.Byte[] being represented as the string.
Update your NuGet reference and try it again. Good luck!

Answer 2

var body = "some string";
var dataStream = new MemoryStream();
byte[] dataToCompress = Encoding.UTF8.GetBytes(body);
using (var memoryStream = new MemoryStream())
{
using (var gzipStream = new GZipStream(memoryStream, CompressionLevel.Optimal))
{
gzipStream.Write(dataToCompress, 0, dataToCompress.Length);
}
dataStream = memoryStream;
}
var client = new RestClient("url");
var request = new RestRequest("", Method.POST);
var compressedBytes = dataStream.ToArray();
request.AddHeader("Content-Encoding", "gzip");
request.AddParameter("application/x-gzip", compressedBytes, ParameterType.RequestBody);
//client.RemoteCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
IRestResponse response = await client.ExecuteAsync(request);
Console.WriteLine(response.Content);