Volley Coroutines Sample request() coroutines

VolleyRequest.kt

suspend fun request(method: Int, url: String, headers: Map<String, String>, jsonRequest: JSONObject?): JSONObject {
    return suspendCancellableCoroutine { continuation ->
        val success = Response.Listener<JSONObject> { response -> continuation.resume(response) }
        val error = Response.ErrorListener { error -> continuation.resumeWithException(error) }

        val request = object : JsonObjectRequest(method, url, jsonRequest, success, error) {

            override fun getHeaders(): Map<String, String> = headers
            override fun parseNetworkError(volleyError: VolleyError): VolleyError {
                return volleyError.networkResponse?.let {
                    Log.e("VolleyRequest", volleyError.networkResponse.headers.toString())
                    Log.e("VolleyRequest", String(volleyError.networkResponse.data))
                    VolleyError(String(volleyError.networkResponse.data))
                } ?: volleyError
            }
        }

        request.retryPolicy = DefaultRetryPolicy(5000, 2, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT)
        continuation.invokeOnCancellation { request.cancel() }

        try {
            Volley.newRequestQueue(applicationContext).addToRequestQueue(request) // must be singleton!!
        } catch (e: Exception) {
            continuation.resumeWithException(e)
        }
    }
}