connection management

After completing the first boost: ASIO-based communication service program, review the concepts used and refer to some materials. We will use a series to summarize how to write high-performance TCP service programs through boost: ASIO. This article

This section first refactor the code. The business logic code and the communication infrastructure code need to be decoupled. The business logic code processes the protocols in the communication process and the application logic behind them.

Newlisp provides a simple method for me to create multiple processes. The following program creates 10 processes, each of which sends several 'A' and finally sends a 'q '. (define (quit-for-error) ((println (net-error)) (exit)))(define (send-test)

This article should be the last one. Provide a complete code that can be used in the product environment. Modify the code logic to make the server an echo server. After receiving the 16-byte length, the string is accepted. Then return the 16-byte

See http://www.metabrew.com/article/a-million-user-comet-application-with-mochiweb-part-1/ for details 1. the Erlang process adds the hibernate feature and supports connections from 20 W to 70 W. As mentioned in the above article, persistent

  1. Start the bluetooth device Sudo/etc/init. d/Bluetooth restart Or Sudo/etc/init. d/bluez-utils restart   2. Use hcitool Dev to view Bluetooth devices on the computer Teapot @ teapot :~ $ Hcitool Dev Devices: Hci0 00: 16: Cf: DB:

A long time ago, setting up a wireless network did not work, now make up for the holiday. I'm using Ubuntu 7.10. The X driver must be installed correctly. The relationship between X programs: Ifconfig, Iwconfig, IP, route, wpa_supplicant

I'm going to change the network manager in Ubuntu and switch to the WICD the Friends recommend, here is a little note. 1, Understand Wicd WICD is an open source network management tool with features such as: (1) independent of GNOME (although it

Use the system administrator to check the number of user connections in the current database: SQL & gt; & nbsp; select & nbsp; username, sid, serial # & nbsp; from & nbsp; v $ session; & nbsp; if you want to stop a connection, use & nbsp; SQL & gt; &

Note: When mysql_connect () is used to obtain shared MySQL connection resources, calling mysql_close () sometimes does not release MySQL connections. Note: When mysql_connect () is used to obtain shared MySQL connection resources, calling

Let's take a look at the elegant exit, but there are still some imperfections. When receiving the exit signal, io_service is directly disabled, instead of closing all connections and then exiting. In fact, three things should be done in order: 1.

Document directory Software Information Software: Because a large number of Windows machines need to be managed at work, these machines are connected through remote desktop, so a batch management software is required. After comparison, I

For RAC, when an Oracle Instance fails, the application has several high-availability technologies to ensure availability. These technologies are transparent to the client, and the client may not be able to perceive the instance failure.1.

For RAC, when an Oracle Instance fails, the application has several high-availability technologies to ensure availability. These technologies are transparent to the client, and the client may not be able to perceive the instance failure. 1.

From the example in the previous section, we can get an inference. If no asynchronous I/O operations are initiated in the connection object, the connection object will be destroyed after the last callback function is executed. I need to prove this

The connection is established by creating an instance of the PDO base class. Regardless of which driver is used, the PDO class name is used. The constructor receives parameters that specify the database source (so-called DSN) and may also include

Now we use newlisp to write a tcp client for testing.Program: Chenshu @ chenshu-Beijing :~ $ Newlispnewlisp v.10.4.5 64-bit on Linux IPv4/6 UTF-8 libffi, execute 'newlisp-H' for more info.> (set 'socket (net-Connect "localhost" 8888) 3>

Start with newlispProgramTest, initiate a connection, send a correct character 'a', connect continuously, then send an error character, disconnect. The test script is as follows: (Define (quit-for-error) (println (net-error) (exit) (set 'socket (

Previous wordsAn HTTP connection is a critical channel for HTTP message transmission. To master HTTP, you need to understand the ins and outs of HTTP connections and how to use those connectionsIf you want to view a Web page, the browser will follow

Startup method One: open windows Left "start-> run", enter services.msc in the dialog box, in the Pop-up service window, double-click Remoteaccessconnectionmanager, Networkconnections, Telephony, and start these three services can be.