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HTTP Articles
Page 5 of 6
What is the full form of SSL?
The full form of SSL is Secure Socket Layer which is considered to be a standard security technology used for establishing the encrypted link present among the server as well as clients which are mostly the web server and that of the browser or that of the mail server and clients.It is designed to make use of TCP to provide a consistent end-to-end secure service. Every browser might contain the capacity for interacting with that of the secure web server with the use of SSL protocol. With the use of the session keys, right after the handshaking has been done ...
Read MoreWhat are the differences between SSL and SSH?
Let us understand the concepts of Secure Sockets Layer (SSL) and Secure Shell (SSH) before learning the differences between them.Secure Sockets Layer (SSL)It's an encryption-based Internet security technology. It was designed to protect data integrity, privacy, and authentication in Internet communications. SSL was the precursor of the TLS encryption protocol that we use today. A website that employs SSL/TLS has "HTTPS" in its URL instead of "HTTP."Two services are provided by SSL Records for SSL connections i.e. Confidentiality and Message integrity Data is fragmented in the SSL Record Protocol application. The fragment is compressed before being added with an encrypted ...
Read MoreWhat are important HTTP headers to be frequently used in Python CGI Programming?
HTTP HeaderThe line Content-type:text/html\r\r is part of HTTP header which is sent to the browser to understand the content. All the HTTP header will be in the following form −HTTP Field Name − Field ContentFor ExampleContent-type − text/html\r\rThere are few other important HTTP headers, which we will use frequently in our CGI Programming. Sr.No.HeaderDescription1Content-type:A MIME string defining the format of the file being returned. Example is Content-type:text/html2Expires: DateThe date the information becomes invalid. It is used by the browser to decide when a page needs to be refreshed. A valid date string is in the format 01 Jan 1998 ...
Read MoreWhat is the maximum size of HTTP header values?
Most web servers have their own set of size limits on HTTP request headers. The HTTP Header values are restricted by server implementations. The following are the limits of some of the most popular web servers −Web ServerSize LimitApache8KNginx4K-8KIIS8K-16KTomcat8K – 48KIf the header size exceeds the above limit, the server returns 413 Entity Too Large error.
Read MoreDifference between REST API and SOAP API
As we know that each machine understand and deals in its different language or input so web-services are something which are required for inter communication between machines and to exchange data between them. In order to implement some set of restrictions over their communication some set of rules and regulations are defined which are known as web-services which basically defines the format and type of data that need to be exchanged and specifically a contract which both machines should be aware of before taking part in communication.This communication system can be categorized into two types, namely Simple Object Access Protocol ...
Read MoreHow to Create 301 Redirection on Nginx and Apache
In this article, we will learn how to redirect the URLs or Domain to another address. This can be done by using the HTTP Redirection. The URL redirection is a popular technique to point one domain address to another domain address which we can achieve on Apache and Nginx both.Redirecting to an another DomainWe might face a situation in which, we have an established web-site and we need to change the domain for the site. Here, we cannot do this by deleting the older domain since this may cause breakage and disappearance of contents on the old domain is possible ...
Read MoreLearn How to Use http stat to Find out Website’s Performance
HTTP state is a Python3 script that visualizes web curl(1) statistics. This script is written in a single file without a dependency. This article explains about How to Use http stat to Find out a Website’s PerformanceInstalling httpstatThere are two ways to install httpstat on Ubuntu as shown below−Download the script directly.Through Python pip.Installing from ScriptTo install httpstat from direct script, use the following command−$wget https://raw.githubusercontent.com/reorx/httpstat/master/httpstat.pyThe sample output should be like this −--2016-12-19 11:27:18-- https://raw.githubusercontent.com/reorx/httpstat/master/httpstat.py Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.100.133 Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.100.133|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 10577 (10K) [text/plain] Saving to: ‘httpstat.py’ httpstat.py ...
Read MoreInstall and Configure Elasticsearch in Ubuntu -14.04
Elasticsearch is an open source search engine that uses Apache Lucene as its engine and released under an Apache license. Elastic search provides a platform for distributed search and analysis of data in real time. Elasticsearch is the most popular for its ease of use, powerful features. Using elastic search you can easily search, explore and analyze your data with an HTTP web interface.FeaturesSome of the general features of Elasticsearch are as follows:Elasticsearch is scalable up to hundreds of servers and petabytes of structured and unstructured data.Elasticsearch can be used as a replacement of MongoDB and RavenDB document store.Elasticsearch is ...
Read MoreHow To Set Up Multiple SSL Host With A Single Apache Server
In this article, we will show you how to set up multiple SSL Certificates on a CentOS with Apache using a single IP address only. In general, a website administrator is restricted to use a single SSL Certificate per socket with an IP which will cost a lot of investment to the company. This restriction may lead them to buy multiple IP addresses for HTTP’s websites for their domain hosting or buy hardware that allows them to utilize multiple network adapters.This is allowed by an extension to the SSL protocol called Server Name Indication (SNI). Most current desktops and mobile ...
Read MoreHow to Install and Configure Squid Proxy Server on Linux
In this article, we will learn how to install and configure the Squid proxy server. A Squid proxy server is an open source and GPLD proxy with web cache. The Squid proxy server has various uses as we can speed up the web server by caching the repeated requests from the clients and we can use it for name server query. We can use it for looking at the network or a group of people for sharing the network resources.Squid proxy is a high-performance proxy caching server for Web clients which supports FTP, gopher, and HTTP data objects. Squid can ...
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