Hello,I started a new Android project.This time I decided to use Ktor instead of Retrofit as a netwo...

# ktor

[Mehmet Peker]

Hello,I started a new Android project.This time I decided to use Ktor instead of Retrofit as a network client.The api uses CloudFlare.When I send a request to the api, I get a 403 Forbidden Error.If I use Retrofit, this problem does not occur.I think the problem is in the common headers that Ktor sends, but I cannot delete the headers no matter what I do.How can I solve this problem? I don’t want to use Retrofit.

[Hristijan]

useDefaultTransformers = false

[Aleksei Tirman [JB]]

Can you share the code snippets with Retrofit and Ktor to determine the difference?

[Mehmet Peker]

I configured ktor client like this. I used Retrofit as a test, very simply.

[Aleksei Tirman [JB]]

Can you share the endpoint you're trying to make a request to?

[Mehmet Peker]

"<https://lezzet-tarifleri.com/>"

[Mehmet Peker]

In addition, I do not have this problem when I send a request with cURL or Postman. I only have this problem when I send a request with Ktor. When I use useDefaultTransformer = false, I can send a request, but I think this is not exactly the right method, we lose some functionality such as response.readText()

[Aleksei Tirman [JB]]

The problem is in the Accept-Charset: UTF-8 header which is added if the HttpPlainText plugin is installed.

[Aleksei Tirman [JB]]

As a workaround, you can remove that header using the following code:

val client = HttpClient(CIO) {
    install(createClientPlugin("fix") {
        on(Send) { request ->
            request.headers.remove("Accept-Charset")
            this.proceed(request)
        }
    })
}

[Mehmet Peker]

This worked, thank you very much. I had previously tried to remove the header within the defaultRequest block and the HttpRequestBuilder block, but it just wouldn’t delete. Your method did the trick.