Hi Ray,

Yes, I understand that part after I get the content.

In a GET situation my callback gets called by libcurl with data:
1st Call – I save the data.
2nd Call – I save the data.
3rd Call – I save the data.
Done. Good.

Now, if the Server has an error after the 2nd call, the 3rd call comes in, I do not know that it is an error message, I save and toss buffer. Save means write to file. Now I get an error condition status.

What I am doing right now is that at each of the Call above, I compare the buffer for "<?xml version=“ and if it compares, I save it off to an error buffer just in case.

This does not seem efficient because at every callback I have to do a string compare.

In the PUT case, there is no problem because when the read callback is called, it is always some message from the Server.

Thanks.

Clin

From: curl-library <curl-library-bounces_at_cool.haxx.se<mailto:curl-library-bounces_at_cool.haxx.se>> on behalf of Ray Satiro via curl-library <curl-library_at_cool.haxx.se<mailto:curl-library_at_cool.haxx.se>>
Reply-To: libcurl development <curl-library_at_cool.haxx.se<mailto:curl-library_at_cool.haxx.se>>
Date: Tuesday, May 17, 2016 at 3:19 PM
To: libcurl development <curl-library_at_cool.haxx.se<mailto:curl-library_at_cool.haxx.se>>
Cc: Ray Satiro <raysatiro_at_yahoo.com<mailto:raysatiro_at_yahoo.com>>
Subject: Re: How to capture Error message from the Server

On 5/17/2016 3:40 PM, Colin Ngam wrote:

Yes, but if the Server is also sending additional text of the error where can I capture this in the situation of the GET e.g.
<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>NoSuchKey</Code><Message>The specified key does not exist.</Message><Key>smC1842A51E22A05000000000000A386410000000100003J7M3CMY9CMULJKG6Q</Key><RequestId>B09B6836031219A8</RequestId><HostId>GIxwOGJB8DMKoIxYcqNkRDL/a1rcrPyg7hmMx+UNNtvUVgaOILdjCMe/ntfo/+bIxWG1D5ws7SU=</HostId></Error>


Currently, what we are doing is comparing the string "<?xml version=“ and saving the buffer just in case of an error overtime the callback is entered.

You'll have to parse that using an XML parser (eg xmlReadMemory [1][2] in libxml2), libcurl doesn't do that for you.


[1]: http://xmlsoft.org/html/libxml-parser.html#xmlReadMemory<https://urldefense.proofpoint.com/v2/url?u=http-3A__xmlsoft.org_html_libxml-2Dparser.html-23xmlReadMemory&d=CwMDaQ&c=8S5idjlO_n28Ko3lg6lskTMwneSC-WqZ5EBTEEvDlkg&r=GgZxxOrjo7rUSi2a3aY7DXfeWcIXQ3Xn4a7ByYeR4wA&m=A6ahqpUAvr9Y_2tm4cBAYbn41KgLoiV59Y3TyYWzCXY&s=wC99_32Sew_R5q-Xr6yg8vrvyayC_4qvaZZsn7XE0U0&e=>
[2]: http://www.xmlsoft.org/examples<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.xmlsoft.org_examples&d=CwMDaQ&c=8S5idjlO_n28Ko3lg6lskTMwneSC-WqZ5EBTEEvDlkg&r=GgZxxOrjo7rUSi2a3aY7DXfeWcIXQ3Xn4a7ByYeR4wA&m=A6ahqpUAvr9Y_2tm4cBAYbn41KgLoiV59Y3TyYWzCXY&s=d625tljkvVpxtu5joA2s6NwerCefgfmksZgJkNpM-6A&e=>

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Received on 2016-05-17