CODEWITHSUNDEEP
c#.netcurldotnet-httpclient
Antonio O
Antonio O

Reputation: 85

How to convert Curl command to .net HttpClient post call

I am trying to figure how to convert this curl snippet to the .net HttpClient as a Post request. Getting 500 error returned from the server from the image below.

Here is the curl command which is for ConvertKit creating a webhook. 

curl -X POST https://api.convertkit.com/v3/automations/hooks
 -H 'Content-Type: application/json'\
 -d '{ "api_secret": "<your_secret_api_key>",\
       "target_url": "http://example.com/incoming",\
       "event": { "name": "subscriber.subscriber_activate" } }'

Link for reference: http://developers.convertkit.com/#webhooks

Here is my .net code snippet:

private static async Task<HttpResponseMessage> PostConverkitCreateWebhookSubscription()
{
        var client = new HttpClient {BaseAddress = new Uri("https://api.convertkit.com ") };
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        dynamic event1 = new ExpandoObject();
        event1.name = "subscriber.subscriber_activate";
        var customEvent = JsonConvert.SerializeObject(event1);

        var keyValues = new List<KeyValuePair<string, string>>
        {
            new KeyValuePair<string, string>("api_secret", "<your_secret_api_key>"),
            new KeyValuePair<string, string>("target_url","http://example.com/incoming"),
            new KeyValuePair<string, string>("event", customEvent)
        };

        var request = new HttpRequestMessage(HttpMethod.Post, "/v3/automations/hooks")
            {
                Content = new FormUrlEncodedContent(keyValues)
            };
        return await client.SendAsync(request);
}

Getting error 500, so I am probably recky havoc on their servers.

enter image description here

Could be the JSON object for possible event ... Not sure.. Need help

Upvotes: 0

Views: 2977

Answers (1)

Todd Menier
Todd Menier

Reputation: 39369

FormUrlEncodedContent encodes key-value pairs similar to a query string. You're basically telling it to send URL-encoded key-value pairs, where the last value is JSON encoded. So your request body will look something like this:

api_secret=<your_secret_api_key>&target_url=http://example.com/incoming&event={"name":"subscriber.subscriber_activate"}

But the API expects the entire payload to be JSON encoded. This modified version should do the trick:

var data = new
{
    api_secret = "<your_secret_api_key>",
    target_url = "http://example.com/incoming",
    @event = new
    {
        name = "subscriber.subscriber_activate"
    }
};
var json = JsonConvert.SerializeObject(data); // json-encode everything, not just event

var client = new HttpClient { BaseAddress = new Uri("https://api.convertkit.com ") };
var content = new StringContent(json, Encoding.UTF8, "application/json");
return await client.PostAsync("/v3/automations/hooks", content);

As a side note, event is a reserved word in C#; @event is how you escape it in order to use it as a property name.

Upvotes: 2

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