小编C. *_*rto的帖子

我正在尝试将所有子域重定向到我的主域，但到目前为止它不起作用。这是我的做法：

server {
    listen         [::]:80;
    server_name *.example.com;
    return 301 $scheme://example.com$request_uri;
}
server {
 listen [::]:443;
        server_name example.com;

        ssl on;
        ssl_certificate /etc/ssl/certs/example.com.crt;
        ssl_certificate_key /etc/ssl/private/example.com.key;

        #enables all versions of TLS, but not SSLv2 or 3 which are weak and now deprecated.
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

        #Disables all weak ciphers
        ssl_ciphers "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECD$

        ssl_prefer_server_ciphers on;

        root /var/www/html;
        index index.html;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ …

我正在尝试将S3和Cognito集成到我的iOS应用程序中,到目前为止还没有成功.我相信错误与我的Autah和Unauth用户的IAM策略有关.所以这是我的政策:

{
  "Version": "2012-10-17",
  "Statement":
   [{
    "Effect":"Allow",
    "Action":"cognito-sync:*",
    "Resource":["arn:aws:cognito-sync:us-east-1:XXXXXXXXXXXX:identitypool/${cognito-identity.amazonaws.com:aud}/identity/${cognito-identity.amazonaws.com:sub}/*"]
  },
  {
      "Effect":"Allow",
      "Action": "s3:*",
      "Resource": ["arn:aws:s3:::my_bucket",
                   "arn:aws:s3:::my_bucket/*"]
  }
 ]
}

这是我称之为S3的地方:

    AWSS3GetObjectRequest *getObjectRequest = [[AWSS3GetObjectRequest alloc] init];
    getObjectRequest.key = KEY;
    getObjectRequest.bucket = BUCKET;

    //default service has been configured previously
    AWSS3 *s3 = [[AWSS3 new] initWithConfiguration:[AWSServiceManager defaultServiceManager].defaultServiceConfiguration];

    [[s3 getObject:getObjectRequest] continueWithBlock:^id(BFTask *task) {
        if(task.error)
        {
            NSLog(@"Error: %@",task.error);
        }
        else
        {
            NSLog(@"Got File");
            NSData *data = [task.result body];
            NSString *urlString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
            NSURL *url = [[NSURL alloc] initWithString:urlString];
            if ([[UIApplication …

我正在使用AWS Cognito进行用户身份验证,我正在尝试测试未经身份验证的用户,但我从Cognito获得的只是一个空身份.以下代码位于viewDidLoad方法上:

AWSCognitoCredentialsProvider *credentialsProvider = [AWSCognitoCredentialsProvider
                       credentialsWithRegionType:AWSRegionUSEast1
                       accountId:@"XXXXXXXXXXXX"
                       identityPoolId:@"us-east-1:XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
                       unauthRoleArn:@"arn:aws:iam::XXXXXXXXXXXX:role/Cognito_XXXXXXXXXUnauth_DefaultRole"
                       authRoleArn:@"arn:aws:iam::XXXXXXXXXXXX:role/Cognito_XXXXXXXXXAuth_DefaultRole"];

AWSServiceConfiguration *configuration = [AWSServiceConfiguration configurationWithRegion:AWSRegionUSEast1
                                                                      credentialsProvider:credentialsProvider];

[AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;

[[credentialsProvider getIdentityId] continueWithSuccessBlock:^id(BFTask *task){
    NSString* cognitoId = credentialsProvider.identityId;
    NSLog(@"cognitoId: %@", cognitoId);
    //[self launchCount];
    return nil;
}];

所以从上面的NSLog我得到:

cognitoId: (null)

以下是授权和未授权用户的Cognito身份验证策略:

{
  "Version": "2012-10-17",
  "Statement":[{
  "Effect":"Allow",
  "Action":"cognito-sync:*",
  "Resource":["arn:aws:cognito-sync:us-east-1:XXXXXXXXXXXX:identitypool/${cognito- identity.amazonaws.com:aud}/identity/${cognito-identity.amazonaws.com:sub}/*"]
  }]
}

任何想法可能是什么,或者我做错了什么？

我正在努力学习C,而且和很多人一样,我一直有点困难.无论如何,我做了一个递归函数来销毁我的链表,但是当我调试时,当我从函数返回时,列表的头部不应该是空的,所以我猜它是一些基本的误解指针.这是功能:

void destroy(struct node* n){
   if(!n) return;
   destroy(n->next);
   free(n);
   n = NULL; }

提前致谢.

如何在Mac OS X中测量shell脚本中经过的时间(以毫秒为单位)？

我正在通过Python执行外部程序.我想知道什么是调用外部程序,最好的选择subprocess.Popen()还是有subprocess.call().此外,我需要测量外部程序使用的经过时间,内存量和CPU.我听说过psutil,但我真的不知道该选哪个.

我正在实施 Lode Runner 的一个版本（这个版本），但我不确定如何重现小兵合作以逼迫玩家的效果，可以使用 A* 来完成，还是有更好的方法？是否有更好的算法来实现仆从（例如群体）之间的协作，或者最好的解决方案是简单地为每个人单独应用一个算法？

我对在节点中更新某些文档的最佳实践感到困惑,例如,我不知道是否应该通过req.body更新多个字段(这会让我更容易):

//course is the document and Course is the model
util.updateDocument(course, Course, req.body);

或者如果我应该创建多个post方法,每个方法都有一个文档字段来更新并从客户端连续请求它们:

app.put('/updatecourse/:field1',function(req, res){});
app.put('/updatecourse/:field2',function(req, res){});
app.put('/updatecourse/:field3',function(req, res){});

目前我正在使用通过req.body接收文档的任何字段并更新它的函数,但是从我听到的这不是一个好的做法,加上方法不是异步的.有人可以向我解释这种情况的最佳做法是什么？