James Dennett wrote:
>> -----Original Message-----
>> From: curl-library-bounces_at_cool.haxx.se [mailto:curl-library-
>> bounces_at_cool.haxx.se] On Behalf Of James Woo
>> Sent: Wednesday, July 18, 2007 4:17 PM
>> To: libcurl development
>> Subject: Re: Problem with GET
>>
>> Dan Fandrich wrote:
>>
>>> On Wed, Jul 18, 2007 at 03:58:56PM -0700, James Woo wrote:
>>>
>>>
>>>> I'm new to libcurl. After using curl_easy_setopt (ctx,
>>>> CURLOPT_WRITEFUNCTION, write_callback) to
>>>> retrieve the web page. I would like to send a http "GET" message
>>>>
> with
>
>> the
>>
>>>> info from the web page.
>>>> I tried curl_easy_setopt(ctx, CURLOPT_READFUNCTION, read_callback)
>>>>
> to
>
>> send
>>
>>>> the http message.
>>>> But the read_callback function is never called. What did I do wrong
>>>>
>> here?
>>
>>> How are you retrieving the original web page. With a "GET" request,
>>>
> most
>
>>> likely. You can read the next web page in exactly the same manner.
>>>
> You
>
>>> will need to ensure that the URL contains any necessary parameters
>>>
> you
>
>>> retrieved from the first web page.
>>>
>>>
>>>
>> curl_global_init(CURL_GLOBAL_ALL);
>> ctx = curl_easy_init();
>> curl_easy_setopt (ctx, CURLOPT_WRITEFUNCTION, write_callback);
>> curl_easy_setopt (ctx, CURLOPT_URL, "http://172.30.2.164/xxx/yyy/");
>> curl_easy_perform (ctx);
>>
>> Got my first web page in the write_callback function.
>>
>> curl_easy_setopt (ctx, CURLOPT_READFUNCTION, read_callback);
>> curl_easy_perform (ctx);
>>
>> Nothing happened.
>>
>
> I'm confused. What is it that you expect your read_callback function to
> do? What is the second operation you're trying to perform? If it's an
> HTTP GET then there's no local reading to do.
>
> -- James
>
>
Thanks for helping out. I've resolved my problem.
All I've to do is to replace the "curl_easy_setopt (ctx,
CURLOPT_READFUNCTION, read_callback);"
with "curl_easy_setopt (ctx, CURLOPT_URL,
"http://172.30.2.164/xxx/yyy/?operation=...");"
Received on 2007-07-19