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NetTalk Web Server => Web Server - Ask For Help => Topic started by: peterH on November 16, 2011, 06:27:48 AM

Title: How to set server response code
Post by: peterH on November 16, 2011, 06:27:48 AM

Hi,
I've written a soap server and I'd like to change the server response code in certain situations.

Instead of returning
HTTP/1.1 200 OK

I would like to return e.g.
HTTP/1.1 500 ERROR

Where and how would I do that?

Thanks
Peter

Title: Re: How to set server response code
Post by: Bruce on November 16, 2011, 08:57:22 PM

Hi Peter,

>> ... certain situations.

The exact situation will matter a lot as to where exactly you do stuff - ie are you coming from a NetWebPage, a NetWebBrowse - and so on.

I think the method you're interested in is p_web.SendError.
This is prototyped as

NetWebServerWorker.SendError PROCEDURE  (long p_ErrorNumber, string p_ErrorString, string p_ErrorDescription)

so for example you can do a
p_web.SendError(500,'Internal Server Error','The server is kaput!')

Some common response codes are;
! "200"   ; OK
! "201"   ; Created
! "202"   ; Accepted
! "204"   ; No Content
! "301"   ; Moved Permanently
! "302"   ; Moved Temporarily
! "304"   ; Not Modified
! "400"   ; Bad Request
! "401"   ; Unauthorized
! "403"   ; Forbidden
! "404"   ; Not Found
! "500"   ; Internal Server Error
! "501"   ; Not Implemented
! "502"   ; Bad Gateway
! "503"   ; Service Unavailable

On the subject of error 500 - that's considered to be a very bad "generic" error, although lots of SOAP servers use it. It's much better to have an error in the 400 range if the request itself is invalid.

cheers
Bruce

Title: Re: How to set server response code
Post by: peterH on November 17, 2011, 12:46:29 AM

Hi Bruce,

You're right, I did get the idea of using error 500 from looking at other soap servers around.And I take your advice, it's not the right thing to do. After all I do return a meaningful error message so using 500 is misleading to say the least.

Thank you
Peter