Server Response Codes

100
This is good. The request was completed and the process can move along.

101
Request to switch protocols (like from HTTP to FTP) was accepted.

200-299
SRCs report that requests were performed successfully. (silent)

200
It simply means all is OK. What the client requested is available.

201
This means a new address was successfully created through a CGI or posting form data.

202
The client’s request was accepted, although not yet acted upon.

203
The accepted information in the entity header is not from the original server, but from a third party.

204
There is no content in the requested click. Let’s say you click on an image map section not attached to a page. This allows the server to just sit there waiting for another click rather than throwing an error.

205
This allows the server to reset the content returned by a CGI.

206
Only partial content is being returned for some reason.

300-399
Request was not performed, a redirection is occurring.(usually silent)

300
The requested address refers to more than one entity. Depending on how the server is configured, you get an error or a choice of which page you want.

301
Page has been moved permanently, and the new URL is available. You should be sent there by the server.

302
Page has been moved temporarily, and the new URL is available. You should be sent there by the server.

303
This is a “see other” SRC. Data is somewhere else and the GET
method is used to retrieve it.

304
This is a “Not Modified” SRC. If the header in the
request asks “If Modified Since”, this will return how long it’s been since the page
was updated.

305
This tells the server the requested document must be accessed
by using the proxy in the Location header (i.e. ftp, http.)

400-499
Request is incomplete for some reason.

400
There is a syntax error in the request. It is denied.

401
The header in your request did not contain the correct
authorization codes. You don’t get to see what you requested.

402
Payment is required. Don’t worry about this one. It’s not in
use yet.

403
You are forbidden to see the document you requested. It can
also mean that the server doesn’t have the ability to show you what you want to see.

404
Document not found. The page you want is not on the server nor has it ever been on the server.
Most likely you have misspelled the title or used an incorrect capitalization pattern in the
URL.

405
The method you are using to access the file is not allowed.

406
The page you are requesting exists but you cannot see it because
your own system doesn’t understand the format the page is configured for.

407
The request must be authorized before it can take place.

408
The request timed out. For some reason the server took too much time
processing your request. Net congestion is the most likely reason.

409
Conflict. Too many people wanted the same file at the same time. It glutted the server. Try again.

410
The page use to be there, but now it’s gone.

411
Your request is missing a Content-Length header.

412
The page you requested has some sort of pre-condition set up.
That means that If something is a certain way, you can have the page. If you get a 412,
that condition was not met. Oops.

413
Too big. What you requested is just too big to process.

414
The URL you entered is too long. Really. Too long.

415
The page is an unsupported media type, like a proprietary file made specifically for a certain program..

500-599
Errors have occurred in the server itself.

501
What you requested of the server cannot be done by the server. Stop doing that you!

502
Your server has received errors from the server you are trying to reach.
This is better known as the “Bad Gateway” error.

503
The format or service you are requesting is temporarily unavailable.

504
The gateway as timed out. This is a lot like the 408 error except the
time-out occurred specifically at the gateway of the server.

505
The HTTP protocol you are asking for is not supported.

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