iOS uploadProgress 进度回调block不走

有人 回答么？

id<OSSCredentialProvider> credential = [[OSSFederationCredentialProvider alloc] initWithFederationTokenGetter:^OSSFederationToken *{
    OSSFederationToken * token = [OSSFederationToken new];
    token.tAccessKey = accessKey;
    token.tSecretKey = secretKey;
    token.tToken = tToken;
    return token;
}];
OSSClientConfiguration * conf = [OSSClientConfiguration new];
conf.maxRetryCount = 2;
conf.timeoutIntervalForRequest = 30;
self.client = [[OSSClient alloc] initWithEndpoint:ENDPOINT credentialProvider:credential clientConfiguration:conf];

OSSPutObjectRequest * put = [OSSPutObjectRequest new];
// 必填字段
put.bucketName = bucketName;
put.objectKey = key;
put.uploadingData = data;
if (option) {
    put.uploadProgress = ^(int64_t bytesSent, int64_t totalByteSent, int64_t totalBytesExpectedToSend) {
        // 当前上传段长度、当前已经上传总长度、一共需要上传的总长度
    这里怎么不走

    };
}
if (option.callbackParam) {
    put.callbackParam = option.callbackParam;
}
if (option.params) {
    put.callbackVar = option.params;
}

OSSTask * putTask = [self.client putObject:put];
[putTask continueWithBlock:^id(OSSTask *task) {
    if (!task.error) {
        NSLog(@"upload object success!");
    } else {
        NSLog(@"upload object failed, error: %@" , task.error);
    }
    return nil;
}];

有人解决么