Connect to local asp.net web server from Android emulator

I made a webserver in asp.net with some API. The server run with IIS in localhost, and i have to connect to it from my Android app (using the android studio emulator). The problem is that i can’t connect to the webserver. I tried with ngrok and when i make a request I get

Bad Request - Invalid Hostname
HTTP Error 400. The request hostname is invalid.

I also tried Conveyor but when i make a request I get

I/System.out: Volley error: com.android.volley.NoConnectionError: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.

Can someone help me please? I have no idea how to solve this.. all the tutorials and questions say the same things and not work for me.

Here the code of kotlin request:

        // i don't put the correct url in the question for security
        val url = "https://255.255.255.255:44307/api/login"


        // Post parameters
        // Form fields and values
        val params = HashMap<String,String>()
        params["mail"] = email.text.toString()
        params["pw"] = password.text.toString()
        val jsonObject = JSONObject(params as Map<*, *>)

        // Volley post request with parameters
        val request = JsonObjectRequest(
            Request.Method.POST, url, jsonObject,
            { response ->
                // Process the json
                try {
                    println( "Response:$response")
                    val intent = Intent(this, MainActivity::class.java)
                    startActivity(intent)
                    finish()
                    //textView.text = "Response: $response"
                } catch (e: Exception) {
                    println( "Response:$response")

                    //textView.text = "Exception: $e"
                }

            }, {
                // Error in request
                println("Volley error: $it")

                //textView.text = "Volley error: $it"
            })


        // Volley request policy, only one time request to avoid duplicate transaction
        request.retryPolicy = DefaultRetryPolicy(
            DefaultRetryPolicy.DEFAULT_TIMEOUT_MS,
            // 0 means no retry
            0, // DefaultRetryPolicy.DEFAULT_MAX_RETRIES = 2
            1f // DefaultRetryPolicy.DEFAULT_BACKOFF_MULT
        )

        // Add the volley post request to the request queue
        VolleySingleton.getInstance(this).addToRequestQueue(request)

            // Add the volley post request to the request queue
            VolleySingleton.getInstance(this).addToRequestQueue(request)

Answers:

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Method 1

I solve the problem removing the ssl from the server and using the tip of @Michal

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0