A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_URI::$config is deprecated

Filename: core/URI.php

Line Number: 101

Backtrace:

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Router::$uri is deprecated

Filename: core/Router.php

Line Number: 127

Backtrace:

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$benchmark is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$hooks is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$config is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$log is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$utf8 is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$uri is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$exceptions is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$router is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$output is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$security is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$input is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$lang is deprecated

Filename: core/Controller.php

Line Number: 75

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$load is deprecated

Filename: core/Controller.php

Line Number: 78

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$db is deprecated

Filename: core/Loader.php

Line Number: 396

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_DB_mysqli_driver::$failover is deprecated

Filename: database/DB_driver.php

Line Number: 371

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$auth_model is deprecated

Filename: core/Loader.php

Line Number: 358

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Auth.php
Line: 15
Function: model

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$bcrypt is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Auth.php
Line: 16
Function: library

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$auth is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 282

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_cookie_params(): Session cookie parameters cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 289

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 304

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 314

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 315

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 316

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 317

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 375

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_save_handler(): Session save handler cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 110

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Session cannot be started after headers have already been sent

Filename: Session/Session.php

Line Number: 143

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$session is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$home_model is deprecated

Filename: core/Loader.php

Line Number: 358

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Home_lib.php
Line: 15
Function: model

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$home_lib is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Breadcrumbs::$ci is deprecated

Filename: libraries/Breadcrumbs.php

Line Number: 29

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Breadcrumbs.php
Line: 29
Function: _error_handler

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Breadcrumbs::$tag_open is deprecated

Filename: libraries/Breadcrumbs.php

Line Number: 33

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Breadcrumbs.php
Line: 33
Function: _error_handler

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Breadcrumbs::$tag_close is deprecated

Filename: libraries/Breadcrumbs.php

Line Number: 34

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Breadcrumbs.php
Line: 34
Function: _error_handler

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Breadcrumbs::$divider is deprecated

Filename: libraries/Breadcrumbs.php

Line Number: 35

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Breadcrumbs.php
Line: 35
Function: _error_handler

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Breadcrumbs::$crumb_open is deprecated

Filename: libraries/Breadcrumbs.php

Line Number: 36

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Breadcrumbs.php
Line: 36
Function: _error_handler

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Breadcrumbs::$crumb_close is deprecated

Filename: libraries/Breadcrumbs.php

Line Number: 37

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Breadcrumbs.php
Line: 37
Function: _error_handler

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Breadcrumbs::$crumb_last_open is deprecated

Filename: libraries/Breadcrumbs.php

Line Number: 38

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Breadcrumbs.php
Line: 38
Function: _error_handler

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Breadcrumbs::$crumb_divider is deprecated

Filename: libraries/Breadcrumbs.php

Line Number: 39

Backtrace:

File: /var/www/digitalknight/webfiles/libraries/Breadcrumbs.php
Line: 39
Function: _error_handler

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$breadcrumbs is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$manage_model is deprecated

Filename: core/Loader.php

Line Number: 358

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 14
Function: __construct

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$pagination is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 17
Function: library

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Home::$tanggal is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 18
Function: library

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$benchmark is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$hooks is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$config is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$log is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$utf8 is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$uri is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$exceptions is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$router is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$output is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$security is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$input is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$lang is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$load is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$db is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$auth_model is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$bcrypt is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$auth is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$session is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$home_model is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$home_lib is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$breadcrumbs is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$manage_model is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$pagination is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
Line: 146
Function: view

File: /var/www/digitalknight/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$tanggal is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /var/www/digitalknight/webfiles/controllers/Home.php
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File: /var/www/digitalknight/index.php
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Function: require_once

Real-time Websocket, Komunikasi dua arah dalam teknologi web | Satria Digital

Real-time Websocket, Komunikasi dua arah dalam teknologi web

22 September 2019 Posted by
Real-time Websocket, Komunikasi dua arah dalam teknologi web
Pesatnya perkembangan teknologi web dengan ditemukannya websocket sebagai mekasnisme komunikasi antara client dan server memungkinkan lalu lintas data dua arah secara aktif.

Pesatnya perkembangan teknologi web dengan ditemukannya websocket sebagai mekasnisme komunikasi antara client dan server memungkinkan lalu lintas data dua arah secara aktif. Ini menunjukkan bahwa selama koneksi antara client dan server terbuka, browser tidak hanya dapat mengirimkan request kepada server, tetapi juga menerima data dari server tanpa harus mengirimkan request terlebih dahulu. Aplikasi berbasis web yang mengadopsi websocket sebagai jalan untuk lalu lintas data ini biasanya disebut dengan Aplikasi Real Time. 

Proses komunikasi antar client browser dan server pada teknologi web umumnya melalui Hypertext Transfer Protocol (HTTP). Komunikasi terjadi ketika client menyampaikan request kepada server dan selanjutnya dibalas dengan response dari sisi server sekaligus mengakhiri komunikasi. Pada model komunikasi sperti ini tidak mungkin terjadinya komunikasi timbal balik (full-duplex) yang konsisten antara browser dengan server. Dengan kata lain, web server tidak akan pernah memulai komunikasi sebelum browser mengirim request.

Telah banyak penelitian dalam pengembangan teknologi web untuk membuat server mampu berkomunikasi langsung dengan browser, di antaranya dengan metode polling yaitu dengan mengautomatisasi browser untuk melakukan request kepada server dengan memanfaatkan timer. Selanjutnya metode long-polling yaitu dengan memodifikasi sisi server untuk menangani request dengan menunggu dalam periode waktu tertentu, dan server akan melakukan response jika menemukan data baru dalam rentang periode tersebut. Dengan mengadopsi dua metode tersebut, browser akan cepat mendapatkan distribusi data dari server. Akan tetapi, konsekwensi dari metode tersebut mengakibatkan konsumsi processor dan memory untuk menangani koneksi HTTP akan sangat besar.

Metode selanjutnya adalah SSE yang memungkinkan streaming server-klien yang lebih efisien, latensi rendah data berbasis teks. Klien memulai koneksi SSE, dan server menggunakan protokol SSE untuk memberikan response pembaruan ke klien. Klien tidak dapat mengirim data apa pun ke server setelah proses transaksi awal. Kondisi ini tidak memungkinkan terjadinya komunikasi timbal balik (full-duplex) yang konsisten antara browser dengan server.

 

Hadirnya HTML5 dalam teknologi web, memungkinkan adanya komunikasi full-duplex antara server dengan browser dengan memanfaatkan fitur websocket. Websocket menawarkan efisiensi pada penggunaan sumberdaya internet dengan meminimalisir konsumsi kerja processor dan kapasitas  memory. Dari sisi keamanan, websocket memiliki tingkat keamanan sama dengan HTTP dan HTTPS. Maka dari itu, websocket bisa dikatakan sebagai solusi paling baik untuk komunikasi timbal balik antar client dan server serta meminimalisir kekacauan pada lalu lintas jaringan dan keamanan.

Websocket diciptakan sebagai solusi ideal bagi komunikasi timbal balik antara server dan browser dalam teknologi web. Dimulai dengan proses request melalui protokol HTTP akan tetapi komunikasi selanjutnya berjalan pada layer TCP. Proses inisialisasi yang disebut handshake dimulai dari sisi klien melalui HTTP atau HTTPS berlaku seperti tekonologi web konvensional pada umumnya hanya dengan tambahan special-header “Upgrade:websocket” sebagai tanda komunikasi dilanjutkan oleh server melalui websocket protokol dengan model komunikasi full-duplex

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