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In C#, how to check if a TCP port is available?
...s are of server ip and server port you wish to connect to.
The TcpClient selects a transient local port from the available pool to communicate to the server. There's no need to check for the availability of the local port as it is automatically handled by the winsock layer.
In case you can't conn...
phpcms与ucenter整合常见问题与解答 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...1536000;
$uid = intval($get['uid']);
$query = DB::query("SELECT uid, username, password FROM ".DB::table('common_member')." WHERE uid='$uid'");
if ($member = DB::fetch($query))
{
dsetcookie('auth', authcode("$member[password]\t$member[uid]", 'ENCODE')...
Solving a “communications link failure” with JDBC and MySQL [duplicate]
... TOMCAT6_SECURITY=no
use validationQuery property
use validationQuery="select now()" to make sure each query has responses
AutoReconnect
Add this code to your connection string:
&autoReconnect=true&failOverReadOnly=false&maxReconnects=10
Although non of these solutions worke...
Reliable method to get machine's MAC address in C#
...aces()
where nic.OperationalStatus == OperationalStatus.Up
select nic.GetPhysicalAddress().ToString()
).FirstOrDefault();
Or:
String firstMacAddress = NetworkInterface
.GetAllNetworkInterfaces()
.Where( nic => nic.OperationalStatus == OperationalStatus.Up &&...
SSH to Elastic Beanstalk instance
... region.
Configure Security Group
In the AWS console, open the EC2 tab.
Select the relevant region and click on Security Group.
You should have an elasticbeanstalk-default security group if you have launched an Elastic Beanstalk instance in that region.
Edit the security group to add a rule for S...
When is it appropriate to use UDP instead of TCP? [closed]
... I just now ran a test out of curiosity. The test read 1 million records (select * from sometable). I set the number of records to return with each individual client request to be 1, 10, and then 100 (three test runs with each protocol). The server was only two hops away over a 100Mbit LAN. The ...
Is it possible to ping a server from Javascript?
... You need to ping the servers concurrently. You can achieve that with select, threads or processes. For really hardcore solution you could use Eventmachine.
– Epeli
Nov 26 '10 at 2:59
...
项目管理实践教程一、工欲善其事，必先利其器【Basic Tools】 - 项目管理 -...
...为安装步骤：
图1：
图2：
注意：Server Port那里，默认端口有80/81/8080三个；如果最后面的CheckBox被选中，则表示使用安全连接【https协议】，这是的端口只有433/8433二个可用。
图3：
图4：
2.CruiseControl.NET ，最新版本是1...
\'telnet\' 不是内部或外部命令，也不是可运行的程序 或批处理文件 - 更多...
...的程序 或批处理文件有时在Windows上需要检测一下服务器端口是否开放等需要用到telnet命令。其实telnet不是仅仅属于Linux的命令，Windows平台上默认也有，不过...有时在Windows上需要检测一下服务器端口是否开放等需要用到telnet命令...
Arduino控制RGB三色LED灯实验、程序代码、连线图、仿真 - 创客硬件开发 - ...
...对Arudino UNO板子中带有"~"的3、5、6、9、10、11数字端口写入一个模拟值，通知高电平与低电平持续时间的比值控制LED的亮度变化或者电机的转速。例如：欲使得内置的Arudino UNO 中的led亮度变为原来的一般，编写analogWrite (13,...