HttpClient uploading MultipartFormData to play 2 framework

Question

I have the following code in a Windows Phone 8 project that uses RestSharp client: ``` public async Task DoMultiPartPostRequest(String ext, JSonWriter jsonObject, ObservableCollection attachments) { var client = new RestClient(DefaultUri); // client.Authenticator = new HttpBasicAuthenticator(username, password); var request = new RestRequest(ext, Method.POST); request.RequestFormat = DataFormat.Json; request.AddParameter("json", jsonObject.ToString(), ParameterType.GetOrPost); // add files to upload foreach (var a in attachments) request.AddFile("attachment", a.FileBody, "attachment.file", a.ContType); var content = await client.GetResponseAsync(request); if (content.StatusCode != HttpStatusCode.OK) return "error"; return content.Content; } ``` Fiddler shows the generated header: ``` POST http://192.168.1.101:9000/rayz/create HTTP/1.1 Content-Type: multipart/form-data; boundary=-----------------------------28947758029299 Content-Length: 71643 Accept-Encoding: ident…

Accepted Answer

Here is the solution.. (hack)

There seems to be a problem with Play Framework when the boundary has quotes in it.

So i added the following code after multipart is created in order to remove them:

```
var content = new MultipartFormDataContent();

foreach (var param in content.Headers.ContentType.Parameters.Where(param => param.Name.Equals("boundary")))
     param.Value = param.Value.Replace("\"", String.Empty);
```

Finally i had to add quotes "\"" manually to specific values on the header like the following:

Original: `Content-Disposition: form-data; name=attachment; filename=attachment.file` Changed to: `Content-Disposition: form-data; name="attachment"; filename="attachment.file"`

and

Original: `Content-Disposition: form-data; name=json` Changed to: `Content-Disposition: form-data; name="json"`

I don't think that its a mistake to have quotes or not anywhere in the header and maybe the parsing on play framework should be fixed accordingly.

HttpClient uploading MultipartFormData to play 2 framework

Solution

Problem