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RRSet of type CNAME with DNS name foo.com. is not permitted at apex in zone bar.com
...
my SSL certificate has expired and AWS emailed me to create CNAME for the hosts I have, but I already have A record, what to do now?
– eugene
Jun 26 at 13:07
...
Difference between Pragma and Cache-Control headers?
...he: MISS
X-Cache-Hits: 0
X-Timer: S1522782193.766958,VS0,VE30
Vary: Fastly-SSL
X-DNS-Prefetch-Control: off
Cache-Control: private
tl;dr: Pragma is a legacy of HTTP/1.0 and hasn't been needed since Internet Explorer 5, or Netscape 4.7. Unless you expect some of your users to be using IE5: it's saf...
What is the difference between localStorage, sessionStorage, session and cookies?
...ive data then the session is really your only option. If you are not using SSL, cookie information can also be intercepted in transit, especially on an open wifi.
On the positive side cookies can have a degree of protection applied from security risks like Cross-Site Scripting (XSS)/Script injectio...
How do popular apps authenticate user requests from their mobile app to their server?
...me to authenticate. So the app initially posts the username/password (over ssl) and the server returns a token that the app stores. For subsequent sync attempts the token is sent first, the server checks it is valid, and then allows other data to be posted.
The token should have an expiry so the se...
What is a stream?
...this example.
A stream can perform transformation or encoding of data (an SslStream in .Net, for example, will eat up the SSL negotiation data and hide it from you; A TelnetStream might hide the Telnet negotiations from you, but provide access to the data; A ZipOutputStream in Java allows you to wr...
Local Storage vs Cookies
...le.log('Cookie where used'); // log
}
"localStorage values on Secure (SSL) pages are isolated"
as someone noticed keep in mind that localStorage will not be
available if you switch from 'http' to 'https' secured protocol, where
the cookie will still be accesible. This is kind of important...
Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
...derstanding was that Android API level less than 5.0 didn't have the right SSL encryption methods to sup
SHA1 vs md5 vs SHA256: which to use for a PHP login?
...his is NOT going to have anything to do with encryption.
If your not using SSL or do not have a certificate then attackers listening to the traffic will be able to pull the password and any attempts at encrypting with javascript or the like is client side and easily cracked and overcome. Again this...
PHP mail function doesn't complete sending of e-mail
...am emails.
Use ports 25 or 587 for plain/TLS connections and port 465 for SSL connections. For most users, it is suggested to use port 587 to avoid rate limits set by some hosting providers.
Don't use the error suppression operator
When the error suppression operator @ is prepended to an expressi...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...下面的命令来构建 malloc 兼容的分配程序（实际上，我们忽略了 realloc() 等一些函数，不过， malloc() 和 free() 才是最主要的函数）：
清单 7. 编译分配程序
gcc -shared -fpic malloc.c -o malloc.so
该程序将生成一个名为 malloc.so 的文...