Go Up to DataSnap technology provides the ability to create Client-Server applications that communicate through the Internet, the local network, or the local host. The following example demonstrates the use of DataSnap in creating a simple local Client-Server application. Both the client and server applications are implemented in Delphi. After creating the server and activating the connection between the client and server with DataSnap, the client can call methods defined and implemented on the server. You can implement a server in either Delphi or C. This example shows both.
The client does not need to be implemented in the same language. DataSnap allows you to have a Delphi server and a C client—or vice versa. Contents. Key DataSnap Server Components The main components are:. The component is the logical heart of the DataSnap server application. It contains and methods for starting and stopping the server. It also contains the property.
In the Server field, enter the name of the MySQL server host to access. You must also enable and configure SSL on the MySQL server with suitable certificates. Pada kesempatan kali ini saya akan membagikan sebuah tutorial/source code cara membuat CRUD memkai bahasa pemograman VB.Net dengan menggunakan database SQL Server. Pada kesempatan sebelumnya saya telah membahas cara koneksi database SQL Server dengan VB.Net, jika anda belum paham cara koneksi nya silahkan buka artikel tersebut.
By default, the value of is set to True, so the server starts automatically when the application does. You need only one component per server application. The component represents a server class. The DataSnap server automatically creates and destroys instances of server classes. The instancing of a server class is controlled by the property of the component. The property has three possible values: Server, Session, and Invocation.
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set to Server means that the DataSnap server creates one instance of a server class that is used by all clients connected to the server application. This represents a 'singleton' pattern.
Be careful when using the Server life cycle, because your server class implementation needs to be thread-safe: you must design the server class so that it can be accessed simultaneously from multiple threads. The default value of is Session.
This means that the DataSnap server creates one instance of a server class for every connected client. The third possible value for the property is Invocation. In this case, a server class instance is created and destroyed for every method call arriving from a client, and the state of a server class is not preserved between method calls. A component is also needed to provide communication between the client and server. The component implements a multithreaded TCP server listening for incoming client connections on multiple threads. This component does not have any events. The Port property indicates the TCP port to be used.
By default, it is set to 211. You can also use HTTP for communication between the client and server.
Creating the Server application. Create a new project:. For Delphi, choose File New VCL Forms Application - Delphi from the main menu. For C, choose File New VCL Forms Application - CBuilder from the main menu. Change the Caption property of the form to ServerForm. Place the following components from the Datasnap Server category of the Tool Palette on the form:. Click the main menu item File Save All.
Save the file as MyServer and save the project as MyServerProj. At this point, your server application should look like this: Follow these steps to link the three components together:. Select the component on the form. Set its Server property to the name of your component, which is DSServer1 in this example. Select the component on the form. Set its Server property to the name of your component, DSServer1 in this example.
Add a new unit to your project. For Delphi, select File New Unit - Delphi in the main menu. For C, select File New Unit - CBuilder in the main menu. Save the unit to the file MyClass.pas for Delphi or MyClass.cpp for C. This unit contains the implementation of the server's classes you want to use in the client application.
In this example, the following code represents the implementation of a class called MyClass that contains one method: the sum of two floating-point numbers.
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Fiuh, gratis, ga perlu bayar listrik, yg diperlukan adalah skill coding app saja 😀 (di screenshot ada byk kegagalan dg HTML error 502 dan 504 tsb adalah kegagalan akibat server tokopedia yang sedang down). Mengunakan plug-in tambahan beresiko melemahkan keamanan website wordpress kita. Untuk menambahkan fasilitas google analytics ke wordpress tanpa plugin, ikutin langkah-langkah berikut:. Login sebagai admin ke dalam wordpress, dan masuk ke dashboard.
Masuk ke menu Appearance Editor. Pilihlah theme yg sekarang anda gunakan, dan carilah file footer.php. Cara ini memang mengubah sedikit file theme.
Jika anda menganti theme, langkah ini harus dilakukan utk theme baru. Setelah itu editlah file tsb.
Cari tag penutup body dan sisipkan script google analytics sebelum tag tsb. Bisa jadi anda tidak menset file permission shg file tsb tidak bisa di-write melalui wp-admin. Solusinya adalah masuk ke spanel atau cpanel di hosting, dan edit file tsb langsung. File tsb berada di folder /wp-content/themes//footer.php. Berhubung baru make hape android dan layanan BB akan pindah ke khusus chat aja maka mau ga mau saya belajar juga setting email di android.
Android yg saya pakai adalah smartfren andro, bisa dilihat di situs smartfren sendiri. Utk kesan penggunaan sih oke banget lah Saya suka sekali layar 800×400 dg IPS Panel. Warna jernih dan resolusi tajam. Layanan data smartfren juga oke, kecuali ketika dicoba utk nelpon, ternyata tidak bisa karena katanya “jaringannya sedang busy”. Jadi kepake yah buat full internet saja.
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Saya punya bbrp email, utk gmail (google mail) setting di android pastinya ga ribet lagi karena android kan keluaran google sendiri. Nah utk yahoo ini ada bbrp triknya. Pertama utk email yahoo.com: 1. Di email android, ketika anda add account, setelah input email & password, tekan Manual setup 2.
Utk incoming server yahoo.com, gunakan jenis IMAP 3. Username diisi lengkap, misalnya [email protected] 4. Utk IMAP Servernya isi: imap.mail.yahoo.com 5.
Port tetap 993, dan ubah Security type ke SSL 6. Kemudian klik Next utk mensetting outgoing server 7. SMTP Server isi: smtp.mobile.mail.yahoo.com 8. Port 587, Security: None, v Required sign-in, 9. Username isi alamat email lengkap, kemudian isi password, dan tekan Next. Utk email di yahoo.co.id agak berbeda lagi.
Gunakan POP 2. POP3 server: pop.mail.yahoo.co.id 3.
Security Type: None, Next - 5. Utk outgoing server, SMTP server: smtp.mail.yahoo.co.id 6. Security Type: None 8. v Required sign-in, 9. Username isi alamat email lengkap, kemudian isi password, dan tekan Next.