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Software Development
by Patrik
HTTP
HTTP (Hypertext Transfer Protocol) is a protocol used for communication between web servers and clients. It facilitates the transfer of text, images, videos, and other multimedia content over the internet. HTTP operates on a request-response model, where clients send requests for resources and servers respond with the requested data. It's the foundation of data communication for the World Wide Web.
Reference: HTTP | MDN (mozilla.org)
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HTTP response status codes indicate the outcome of an HTTP request. They range from informational 1xx, success 2xx, redirection 3xx, client error 4xx, to server error 5xx. For example, 200 signifies success, 404 indicates not found, and 500 suggests a server error. Understanding these codes aids in troubleshooting and debugging web applications.
Reference: HTTP response status codes - HTTP | MDN (mozilla.org)
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1xx Informational status codes indicate provisional responses prior to final ones. For instance, 100 Continue signals the server is ready for a client to send the request body.
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HTTP successful responses (2xx) indicate that the request was successfully received, understood, and accepted.
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3xx status codes indicate redirection. They inform the client that further action needs to be taken to complete the request.
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HTTP client error responses (4xx) indicate issues with the request. Codes like 400 for Bad Request, 404 for Not Found, and 403 for Forbidden signify client-side errors.
400 Bad Request401 Unauthorized402 Payment Required403 Forbidden404 Not Found405 Method Not Allowed406 Not Acceptable407 Proxy Authentication Required408 Request Timeout409 Conflict410 Gone411 Length Required412 Precondition Failed413 Payload Too Large414 URI Too Long415 Unsupported Media Type416 Range Not Satisfiable417 Expectation Failed418 I'm a teapot421 Misdirected Request422 Unprocessable Content423 Locked424 Failed Dependency425 Too Early426 Upgrade Required428 Precondition Required429 Too Many Requests431 Request Header Fields Too Large451 Unavailable For Legal Reasons
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5xx status codes indicate server errors. 500 means generic server issue, 503 is for service unavailable, 504 indicates gateway timeout.
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