Issue with AddFile on Request

[iamsubingyawali]

I am using Restsharp to send a POST request to my REST API running Laravel. Specifically, what I am trying to do is to create a new user from my WPF app which sends some user details and profile image as post params. I tried the same thing with Postman and it is working fine but it didn't work as expected while using Restsharp. I am getting PHP Warning: File Upload Mime headers garbled in Unknown on line 0 on my Laravel server.

Code I am using:

RestRequest restRequest = new RestRequest("user", Method.Post); 
restRequest.AlwaysMultipartFormData = true;
restRequest.AddHeader("Content-Type", "multipart/form-data");

// Adding other post params
// post_data is a dictionary: Dictionary<string, object> post_data;
post_data.Add("firstname", FirstNameField.Text.Trim());
// and so on
restRequest.AddJsonBody(post_data);

// Adding files
// profile_image is link to the file: E:\MyFiles\Pictures\Screenshots\Screenshot (7).png
restRequest.AddFile("photo", profile_image);
var response_json = await client.ExecuteAsync<JObject>(restRequest);

Environment

• OS: Windows 11
• .NET5 WPF
• Version 107.1.1
• Server: Laravel v8.58.0 (PHP v8.0.13)

[alexeyzimarev]

How does the request look like in Postman?

[alexeyzimarev]

Please use something like https://requestbin.com to compare the request posted with Postman, and with RestSharp. Expand the headers section, and use raw content view when making screenshots.

[iamsubingyawali]

Headers from Postman

'Accept' => 'application/json',
'Authorization' => 'Bearer 245|jbjikfnOxkck73NmwRll8SEwcSbnjVnylTGZEv5m',
'User-Agent' => 'PostmanRuntime/7.29.0',
'Postman-Token' => '058ccabe-398c-4d85-8766-b65084cdae04',
'Host' => '127.0.0.1:8000',
'Accept-Encoding' => 'gzip, deflate, br',
'Connection' => 'keep-alive',
'Content-Type' => 'multipart/form-data; boundary=--------------------------182914604267830295666128',
'Content-Length' => '1015565',

Headers from Restsharp

'Accept' => 'application/json',
'Authorization' => 'Bearer 244|KhV6cMu1dWCgXDKFs1oSFHs5fxQdK7FYWXdnURkr',
'User-Agent' => 'RestSharp/107.1.1.0',
'Host' => '127.0.0.1:8000',
'Accept-Encoding' => 'gzip, deflate, br',
'Content-Type' => 'multipart/form-data; boundary="6671f68a-aa4e-46dc-9af1-7f884a5d08b0"',
'Content-Length' => '1014828',

Sorry to say that I misssed something earlier. The request from Restsharp is not sending params other than one from AddFile. Is this something that is impossible to do with Restsharp?

I tried only sending the image and it worked. But with other content, I am getting the same error.

[alexeyzimarev]

I don't think you are posting JSON with Postman, I think you post the form data. Please just take a screenshot from requestbin.com of the raw request coming from Postman.

[iamsubingyawali]

Yes, I am using form-data to send the data from Postman as we can't attach file using other formats in Postman. I extracted those requests from the server itself. I tried using AddBody instead of AddJsonBody in Restsharp but it too didn't work.

[alexeyzimarev]

You need to make a choice, whether you are posting form data, or you are posting a JSON payload.

Posting form parameters with RestSharp is done by using AddParameter(name, value), as it is described in the docs.

[iamsubingyawali]

I think AddParameter fulfils my need. Thanks!