HTTP (Hypertext Transfer Protocol) is a process through which clients interact and communicate. When someone clicks a link or writes an URL their browser provides a request to the server for getting information.
When you access a web server or an application, every HTTP request that you receive gets triggered with an HTTP status code. HTTP status codes are basically three-digit codes and contain 5 different classes. It can easily be identified with the 1st digit like:
This mainly deals with identifying and troubleshooting several HTTP error codes like 4xx and 5xx status codes. It comes from a system administrator’s perspective. You will face several such scenarios where you will see that the web server responds to a request with a certain error code. Therefore, in this article, we will provide the main causes and solutions to these common error codes.
Client Errors or HTTP Error Codes from 400 to 499 are caused by the HTTP requests sent via the user client. These errors are basically client-related. However, it becomes very essential to know how the users are tackling these error codes to identify the important issues. Obviously, it will help you to figure out the essential fixes through the server configuration.
There are several errors returned by the webserver when it is sure that it has encountered some errors. Otherwise, it might happen that it is unable to process the request.
400 Status Code or Bad Request error is basically the HTTP request that was sent to the server containing invalid syntax.
Some of the situations you might face when a 400 Bad Request error occur:
401 status code error generally occurs when the user is trying to access the resource without having a proper authentication. It might happen that the user should give credentials in order to see the protected sources.
In order to combat the issue, please go through the below steps
The 403 request generally occurs when the user is making a valid request but the server is not accepting the request. It happens due to a lack of information to access the requested resource. If you are facing this error there are some of the causes
403 error usually occurs when the user does not have the appropriate authority to read the file.
It also occurs when the user is trying to access a directory that does not contain a default index file. Also, the directory listing is disabled there. For Example, Suppose the user wants to access the link http://example.com/emptydir/ and emptydir directory does not contain an index file. In that case, 403 status will be returned.
In order to make your directory listing enabled, you have to access the webserver configuration. You can check out a detailed guide to fix 403 Forbidden Error
The 404 Status Code or Not Found Error mainly signifies that the user can communicate with the server, but is unable to spot the requested file or resource. 404 errors occur in different situations. If the user is encountering a 404 Not Found Error, there might be a list of questions while troubleshooting-
The 500 status code or the Internal Server Error mainly occurs when the server cannot proceed with the requesting owing to some unanimous reason. Moreover, this code can appear when some particular 5xx errors get more prominent. The most common cause of this particular error is server misconfiguration or may be missing packages from the server end.
502 status code mainly occurs when a particular server is a gateway or proxy server. Also, it occurs when if it doesn’t receive any valid response from the backend that meets the request.
However, if the server is a reverse proxy server like a load balancer, check the below things.
503 Status code or 503 Service Unavailable Error occurs when the server is extra loaded or under maintenance. This error signifies that the service must be available at certain points.
However, if the server is not under maintenance this will signify that the server does not contain sufficient CPU or memory resources to tackle all the incoming requests. Otherwise, the webserver needs to be configured to permit more users, threads as well as processes.
Just follow the below basic steps
The 504 Status Code usually occurs when the server is a gateway or a proxy server. Therefore, it does not receive a response from the backend server within the stipulated time period.It occurs due to the following situations
We hope this blog covers all the major areas pertaining to HTTP error codes and it’s fixed. This article will give you a brief insight into the HTTP codes and it’s suitable fixes. You can certainly look for the best place to buy proxies to enjoy browsing the internet without any interruption. However, feel free to get in touch with us in case of any queries.
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