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What is the difference between active and passive FTP?
...f those predefined ports. As a result, an attempt to connect to it will be blocked by the firewall and no connection will be established.
A passive configuration will not have this problem since the client will be the one initiating the connection. Of course, it's possible for the server side to...
base64 encoded images in email signatures
...sage where the image attachment is in the related part.
Clients shouldn't block this image either as it isn't remote.
Or, here's a multipart/alternative, multipart/related example as an mbox file (save as windows newline format and put a blank line at the end. And, use no extension or the .mbs ext...
What is the difference D3 datum vs. data?
...ily: arial;
}
.l {
width: 20px;
height: 20px;
display: inline-block;
vertical-align: middle;
margin: 10px 0;
}
.l-a {
background: #cf58e4;
}
.l-b {
background: #42e4e4;
}
.a {
border-bottom: 2px solid #cf58e4;
}
.b {
border-bottom: 2px solid #42e4e4;
}
&...
Maintain the aspect ratio of a div with CSS
... is calculated with respect to the width of the generated box's containing block [...] (source: w3.org, emphasis mine)
Padding-bottom values for other aspect ratios and 100% width :
aspect ratio | padding-bottom value
--------------|----------------------
16:9 | 56.25%
4:3 ...
What is the difference between “INNER JOIN” and “OUTER JOIN”?
...A.Advisor_ID
References
Inner and outer joins SQL examples and the Join block
SQL: JOINS
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What's the right OAuth 2.0 flow for a mobile app
...rty apps.
Authorization servers SHOULD consider taking steps to detect and block
logins via embedded user-agents that are not their own, where
possible.
Some interesting points are also raised here: https://security.stackexchange.com/questions/179756/why-are-developers-using-embedded-user-agents-fo...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...g:hover { color: #3773f5 } .feedback-pop .feedback-img { display: inline-block; width: 24px; height: 24px; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } 文档反馈 切换 目录 在线 客服 ...
How does HTTP file upload work?
.... FTP active mode doesn't apply here. Second, listening socket doesn't get blocked on every connection. You can have as many connections to one port, as the other sides has ports to bind their own end to.
– Slotos
Nov 12 '14 at 20:58
...
How to use java.net.URLConnection to fire and handle HTTP requests?
..., while it works fine with a real web browser. The server side is probably blocking requests based on the User-Agent request header. The URLConnection will by default set it to Java/1.6.0_19 where the last part is obviously the JRE version. You can override this as follows:
connection.setRequestProp...
AngularJS : Where to use promises?
...y and handle it at the end, semantically similar to the familiar try/catch block.
Consider this contrived example. Say we have two functions, where the second function consumes the result of the first one:
var firstFn = function(param) {
// do something with param
return 'firstResult';
...