![]() The default port number assigned to HTTP is TCP port 80. The IP provides support for routing and addressing (via a unique IP address for machines connected to the Internet) while TCP supports multiplexing via 64K ports from port number 0 to 65535. HTTP is an application layer protocol runs over TCP/IP.The process repeats for the next request-response.(client) The client-side program receives the query result and displays on the browser.(server-to-client) The server-side program receives the query parameters, queries the database based on these parameters, and returns the query result to the client-side program.This sends the query parameters to a server-side program. (client-to-server) The user fills up the query criteria inside the form and submits the form.(server-to-client) The HTTP server returns an HTML form (client-side program), which is loaded and rendered in the client's browser.(client-to-server) A user, via a web browser (HTTP client), issues a URL request to an HTTP server to start a webapp.Server-Side Programs: Could be written in Java Servlet/JSP, ASP, PHP, Perl, Python, JavaScript, and others.Client-Side Programs: Could be written in HTML Form, JavaScript, and others.Database: E.g., Open-source MySQL, PostgreSQL, Apache Derby, mSQL, SQLite, OpenOffice's Base Commercial Oracle, IBM DB2, SAP SyBase, Microsoft SQL Server, Microsoft Access and others.HTTP Client (or Web Browser): E.g., Internet Explorer (MSIE), FireFox, Chrome, Safari, and others.HTTP Server: E.g., Apache HTTP Server, Apache Tomcat Server, Microsoft Internet Information Server (IIS), nginx, Google Web Server (GWS), and others.Examples of webapps are google, amazon, facebook and twitter.Ī webapp is typically a 3-tier (or multi-tier) client-server database application run over the Internet as illustrated in the diagram below. import Introduction Web Application (Webapp)Ī web application (or webapp), unlike standalone application, runs over the Internet. ![]() Tomcat 10 (under Jakarta EE 9) moves all the Tomcat 9 (under Java EE 8) packages in the javax.* namespace have moved to the jakarta.* namespace. (Advanced) Differences between Tomcat 10 and Tomcat 9 To install Tomcat 9, see " Tomcat9 - Howto". Take note that Tomcat 10 is not compatible with Tomcat 9 - Applications that run on Tomcat 9 and earlier will not run on Tomcat 10 without changes. ![]() This installation and configuration guide is applicable to Tomcat 10. This practical can be completed in a 3-hour session.
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