HTML errors messages

Do you want to know what is the meaning of those weird error messages in your web browser, such as "error 407" or "error 400", whenever you try to access an internet page ?

Here is a helpful table, mainly when you are reading Squid's access log file. I found it in Stretched Out site:

Code	Description	Comment/Reason
100	Continue
101	Switching Protocols
200	OK	Action complete successfully
201	Created	Success following a POST command
202	Accepted	The request has been accepted for processing, but the processing has not yet been completed.
203	Partial Information	Response to a GET command, indicates that the returned information is from a private web.
204	No Content	Server has received the request but there is nothing to send back. (Empty Document)
205	Reset Content
206	Partial Content	The requested file was partially sent. Usually caused by stopping or refreshing a web page before it loads.
300	Multiple Choices	The request could fit multiple files.
301	Moved Permanently	Requested a directory instead of a file. The web server substituted the index.html file.
302	Moved Temporarily
303	See Other
304	Not Modified	The cached version of the requested file is the same as the file to be sent.
305	Use Proxy
400	Bad Request	The request had bad syntax or could not be interpreted.
401	Unauthorized	User failed to provide a valid user name / password required for access to file / directory.
402	Payment Required
403	Forbidden	Access to a protected or private password protected folder was attempted.
404	Not Found	The requested file was not found.
405	Method Not Allowed
406	Not Acceptable
407	Proxy Authentication Required
408	Request Time-Out	The server did not respond in the allocated time.
409	Conflict
410	Gone
411	Length Required
412	Precondition Failed
413	Request Entity Too Large
414	Request-URL Too Large	The submitted URL was too long to be interpreted by the server.
415	Unsupported Media Type
500	Server Error	The server encountered an unexpected condition which prevented it from fulfilling the request
501	Not Implemented	The server does not support the service required.
502	Bad Gateway
503	Out of Resources	The server cannot process the request due to a system overload. This is usually a temporary condition.
504	Gateway Time-Out	The service did not respond within the time frame that the gateway was set to wait.
505	HTTP Version not supported	The Web Server does not understand the version of http used by the browser.