private static IEnumerator _DownloadFile(string url, string savePath,
OnRequestSuccess onDownloadStart,
OnRequestSuccess onFinish,
OnRequestError onError,
OnRequestProgress onProgress)
{
var headRequest = UnityWebRequest.Head(url);
yield return(headRequest.SendWebRequest());
var totalSize = long.Parse(headRequest.GetResponseHeader("Content-Length"));
var fileInfo = new FileInfo(savePath);
if (fileInfo.Exists && fileInfo.Length == totalSize)
{
onFinish?.Invoke(headRequest);
}
else
{
using (var request = new UnityWebRequest(url, UnityWebRequest.kHttpVerbGET))
{
var handler = new DownloadHandlerFileRange(savePath, request);
request.downloadHandler = handler;
onDownloadStart?.Invoke(request);
var asyncOp = request.SendWebRequest();
while (!asyncOp.isDone)
{
yield return(null);
onProgress?.Invoke(asyncOp);
}
if (request.isNetworkError || request.isHttpError)
{
handler.Close();
if (onError != null)
{
Debug.LogWarningFormat("SendRequest Failed:\nresponseCode :{0}\nerror :{1}\nurl:{2}",
request.responseCode, request.error, request.url);
onError(request);
}
else
{
Debug.LogErrorFormat("SendRequest Failed:\nresponseCode :{0}\nerror :{1}\nurl:{2}",
request.responseCode, request.error, request.url);
}
}
else
{
Debug.LogFormat("Finish UnityWebRequest: {0}\nresponseCode :{1}", request.url,
request.responseCode);
onFinish?.Invoke(request);
}
}
}
}
public void RequestSuccess()
{
OnRequestSuccess?.Invoke();
}