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another doc file included for detailed message
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‎docs/status-codes-with-detailed-message.md‎

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# Detailed HTTP Status Messages
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This document provides detailed descriptions of HTTP status codes, including unofficial and vendor-specific ones.
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---
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## ✅ 1xx — Informational
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| Code | Message |
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|------|---------|
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| 100 | Continue. Request received, continue to send the rest of the request. |
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| 101 | Switching Protocols. Protocol switch initiated as requested by the client. |
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| 102 | Processing. Request accepted, processing is ongoing without final response yet. |
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| 103 | Early Hints. Preliminary headers sent before the final response. |
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---
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## ✅ 2xx — Success
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| Code | Message |
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|------|---------|
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| 200 | OK. The request was successful and the response contains the result. |
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| 201 | Created. The request was successful and a new resource has been created. |
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| 202 | Accepted. The request has been received but not yet acted upon. |
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| 203 | Non-Authoritative Information. Metadata may come from a local or third-party copy. |
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| 204 | No Content. The request was successful, but there is no content to return. |
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| 205 | Reset Content. The client should reset the document view after receiving this response. |
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| 206 | Partial Content. The server is returning only part of the resource due to a range header. |
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| 207 | Multi-Status. Contains status for multiple independent operations (WebDAV). |
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| 208 | Already Reported. Elements have already been reported in a previous response (WebDAV). |
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| 226 | IM Used. GET request fulfilled with a response based on instance manipulations (Delta encoding). |
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---
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## ✅ 3xx — Redirection
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| Code | Message |
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|------|---------|
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| 300 | Multiple Choices. Multiple options are available for the requested resource. |
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| 301 | Moved Permanently. The resource has been permanently moved to a new URL. |
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| 302 | Found. The resource is temporarily located at a different URL. |
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| 303 | See Other. Redirect the client to a different URL using the GET method. |
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| 304 | Not Modified. The resource has not changed since the last request; use cached version. |
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| 305 | Use Proxy. Access to the resource must be made through the specified proxy. |
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| 307 | Temporary Redirect. The resource resides temporarily under a different URI using the same method. |
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| 308 | Permanent Redirect. The resource is permanently located at a different URI using the same method. |
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---
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## ✅ 4xx — Client Errors
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| Code | Message |
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|------|---------|
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| 400 | Bad Request. The server could not understand the request due to malformed syntax. |
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| 401 | Unauthorized. Authentication is required and has either failed or not been provided. |
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| 402 | Payment Required. Payment is required to access the requested resource. |
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| 403 | Forbidden. The client is authenticated but does not have access rights to the content. |
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| 404 | Not Found. The server cannot locate the requested resource. |
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| 405 | Method Not Allowed. The request method is recognized but not supported by the target resource. |
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| 406 | Not Acceptable. The requested resource is not available in a format acceptable to the client. |
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| 407 | Proxy Authentication Required. The client must authenticate itself with the proxy first. |
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| 408 | Request Timeout. The server timed out waiting for the client’s request. |
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| 409 | Conflict. The request could not be completed due to a conflict with the current state of the resource. |
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| 410 | Gone. The requested resource is no longer available and has been permanently removed. |
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| 411 | The request did not specify the length of its content. |
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| 412 | The server does not meet one of the preconditions specified by the client. |
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| 413 | The request payload is larger than the server is willing or able to process. |
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| 414 | The URI provided was too long for the server to process. |
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| 415 | The media format of the requested data is not supported by the server. |
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| 416 | The client has asked for a portion of the file, but the server cannot supply that portion. |
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| 417 | The server cannot meet the requirements of the Expect request-header field. |
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| 418 | The server refuses to brew coffee because it is a teapot. |
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| 421 | The request was directed at a server that is not able to produce a response. |
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| 422 | The request was well-formed but was unable to be followed due to semantic errors. |
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| 423 | The resource that is being accessed is locked. |
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| 424 | The request failed due to failure of a previous request. |
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| 425 | The server is unwilling to risk processing a request that might be replayed. |
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| 426 | The client should switch to a different protocol as requested by the server. |
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| 428 | The origin server requires the request to be conditional. |
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| 429 | The user has sent too many requests in a given amount of time. |
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| 431 | The server is unwilling to process the request because its header fields are too large. |
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| 451 | Access to the resource is denied for legal reasons. |
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---
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## ✅ 5xx — Server Errors
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| Code | Message |
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|------|---------|
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| 500 | Internal Server Error. The server encountered an unexpected condition that prevented it from fulfilling the request. |
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| 501 | Not Implemented. The server does not support the functionality required to fulfill the request. |
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| 502 | Bad Gateway. The server received an invalid response from an upstream server while acting as a gateway or proxy. |
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| 503 | Service Unavailable. The server is currently unable to handle the request due to maintenance or overload. |
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| 504 | Gateway Timeout. The server, acting as a gateway or proxy, did not receive a timely response from the upstream server. |
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| 505 | HTTP Version Not Supported. The server does not support the HTTP protocol version used in the request. |
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| 506 | Variant Also Negotiates. The server encountered an internal configuration error while negotiating content. |
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| 507 | Insufficient Storage. The server cannot store the representation needed to complete the request. |
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| 508 | Loop Detected. The server terminated the request because it detected an infinite loop in processing. |
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| 510 | Not Extended. Further extensions are required for the server to fulfill the request. |
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| 511 | Network Authentication Required. The client must authenticate to gain network access. |
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---
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## 🚫 Unofficial Codes
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| Code | Message |
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|------|---------|
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| 419 | Page Expired. Page expired due to missing or invalid CSRF token. |
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| 420 | Method Failure. Request rate limited; please slow down. |
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| 450 | Blocked by Windows Parental Controls. Access blocked by Windows parental control settings. |
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| 498 | Invalid Token. Token provided is invalid or expired. |
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| 509 | Bandwidth Limit Exceeded. Bandwidth limit exceeded as per server settings. |
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| 530 | Site Frozen. Site is frozen due to inactivity or administrative action. |
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| 598 | Network Read Timeout Error. Network read timed out behind a proxy server. |
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| 599 | Network Connect Timeout Error. Network connection timed out during communication. |
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---
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## 🌐 NGINX Specific
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| Code | Message |
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|------|---------|
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| 444 | No Response. No response returned; connection closed immediately. |
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| 494 | Request Header Too Large. Request header is too large to be processed by the server. |
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| 495 | SSL Certificate Error. Invalid client SSL certificate provided. |
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| 496 | SSL Certificate Required. Client SSL certificate required but not provided. |
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| 497 | HTTP Request Sent to HTTPS Port. HTTP request sent to an HTTPS port by mistake. |
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| 499 | Client Closed Request. Client closed the request before server responded. |
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---
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## ☁️ Cloudflare Specific
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| Code | Message |
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|------|---------|
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| 520 | Unknown Error. Unknown error from origin server; connection reset or invalid response. |
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| 521 | Web Server Is Down. Origin server refused connection from Cloudflare. |
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| 522 | Connection Timed Out. TCP handshake timed out between Cloudflare and origin server. |
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| 523 | Origin Is Unreachable. Cloudflare could not reach the origin server. |
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| 524 | A Timeout Occurred. Timeout occurred waiting for response from origin server. |
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| 525 | SSL Handshake Failed. SSL/TLS handshake failed between Cloudflare and origin server. |
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| 526 | Invalid SSL Certificate. Origin server presented an invalid SSL certificate. |
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| 527 | Railgun Error. Request timed out or failed after WAN connection was established. |
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