// Get the whole REST API string for a device, from cache if possible
internal virtual async Task <YJSONObject> requestAPI()
{
if (_cache_expiration > YAPI.GetTickCount())
{
return(_cache_json);
}
string request;
if (_cache_json == null)
{
request = "GET /api.json \r\n\r\n";
}
else
{
string fw = _cache_json.getYJSONObject("module").getString("firmwareRelease");
request = "GET /api.json?fw=" + YAPIContext.imm_escapeAttr(fw) + " \r\n\r\n";
}
string yreq = await requestHTTPSyncAsString(request, null);
YJSONObject cache_json;
try {
cache_json = new YJSONObject(yreq);
cache_json.parseWithRef(_cache_json);
} catch (Exception ex) {
_cache_json = null;
throw new YAPI_Exception(YAPI.IO_ERROR, "Request failed, could not parse API (" + ex.Message + ")");
}
this._cache_expiration = YAPI.GetTickCount() + YAPI.DefaultCacheValidity;
this._cache_json = cache_json;
return(cache_json);
}