Client-Server Communication
Client-server communication is usually done through TCP/IP protocol. TCP covers part of transport and the sessions layer in a typical OSI model. TCP being a connection-oriented protocol makes sure that the connection remains in place till the messages are exchanges at the very end of the queue.
On the other hand, IP is a connectionless protocol which don’t communicate following the initial transmission of messages. TCP organizes the packets of information is a sequence which the IP treats as an independent unit. IP belongs to network layer in the OSI model.
HTTP Protocol Basics
Following are some of the methods in HTTP protocol.
|
Methods |
Definitions |
|---|---|
|
HEAD |
Gets the status of a resource. |
|
GET |
Retrieval of a resource. |
|
POST |
Creation of a new resource. |
|
PUT |
Update an already existing resource. |
|
DELETE |
Delete a resource. |
HTML Language Basics
HTML stands for Hyper Text Markup Language which provides the structure of a web application. It consists of different elements each responsible for the different view of a component in the browser.
HTML
<!DOCTYPE html> <html> <head> <title>GFG : Overview to HTML</title> </head> <body> <h1>Welcome To GFG</h1> <p>This is an overview to HTML</p> </body> </html> |
Code Explanation:
- The <!DOCTYPE html> provides the reference that this is an HTML followed by its root element <html>.
- <head> provides the meta information of the HTML page which contains the links and <title> to the web page.
- <body> contains all the components and the modules of the web application. <h1> provides large headings while <p> denotes the paragraph.
- The boundary of the respective element is marked by its closing tag.
Advanced Java – Getting Started to Web Application
A Web Application is software that executes on the web browser. It links the customers and the service providers as a medium of exchange. For example, Amazon provides a marketplace where sellers and buyers can coexist. It provides a mechanism to exchange services and perform operations seamlessly.