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通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...rver 程序来说，它会为多个 client 程序请求创建多个 socket 端口给与响应。如果恰好有大量的 client 同时向 server 发出请求，那么此时 server 就会需要创建大量的 socket 连接。但在一个系统当中，往往需要限制单个 server 程序所能使...
App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
...明书，不要弄错以免烧坏硬件）
一般来说，需要接线的端口有以下4个，无论哪款蓝牙硬件，也无论哪种其他硬件，这4个端口都是基本的存在：VCC（正极）、GND（接地负极）、TX、RX 交叉接线，参考接线如图：
2、串口工具测...
How serious is this new ASP.NET security vulnerability and how can I workaround it?
...tain sensitive information like login information in a database connection string, or even link to an automouted sql-express database which you don't want someone to get hold of. But if you are following best practice you use Protected Configuration to encrypt all sensitive data in your web.config.
...
What is the best Distributed Brute Force countermeasure?
...ottling on a site wide basis, you can ramp up the throttle quite quickly.
Extra refinements:
detect IPs that are guessing multiple accounts - 408 Request Timeout
detect IPs that are guessing the same account - 408 Request Timeout after a large (say 100) number of guesses.
UI ideas (may not be s...
How to use CURL via a proxy?
... data will be returned to $curl_scraped_page variable.
I removed a second extra curl_exec($ch); which would stop the variable being returned.
I consolidated your proxy IP and port into one setting.
I also removed CURLOPT_HTTPPROXYTUNNEL and CURLOPT_CUSTOMREQUEST as it was the default.
If you don'...
linux svn搭建配置及svn命令详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...svnserve -d -r /opt/svn/repos/ --listen-host 127.0.0.1 （注：不指定端口号，默认为3690）
1、安装
[root@www ~]# yum install subversion
[root@www ~]# svn -v 判断是否安装成功
svnserve, version 1.6.11 (r934486) 出现类型提示，说明安...
When is it appropriate to use UDP instead of TCP? [closed]
...l data amount transmitted was about the same for both IP and TCP. We have extra overhead with the UDP communications because we have some of the same stuff that you get for "free" with TCP/IP (checksums, sequence numbers, etc.). For example, Wireshark showed that a request for the next set of reco...
Why is the Android emulator so slow? How can we speed up the Android emulator? [closed]
... in one of the following locations:
C:\Program
Files\Android\android-sdk\extras\intel\Hardware_Accelerated_Execution_Manager
C:\Users\<user>\adt-bundle-windows-x86_64\sdk\extras\intel\Hardware_Accelerated_Execution_Manager
If the installer fails with the message that Intel VT must be turne...
How can I get the client's IP address in ASP.NET MVC?
...Controller
{
public ActionResult Index()
{
string ip = Request.UserHostAddress;
...
}
}
}
Example: From within a helper class:
using System.Web;
namespace Mvc.Helpers
{
public static class HelperClass
{
public static string...
REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...roxy port number. Should be Numeric and at least 2 chars.
#代理服务器端口
# Example : PROXY_PORT=25
#------------------------------------------------------------------------------
PROXY_PORT=
#------------------------------------------------------------------------------
# Specify...