Ciao amici,
I was trying the HTTP connections this morning. I have encountered a
problem and I don't know how to get out hte way I would. Let me explain.
When I make an HTTP request (with both HEAD and GET methods), I obtain a
response from the server, I parse the header and look for the info
contained. Among the info that result, I take the status code.
If the request method is 'GET' and the document is parsable I want to
retrieve the result. Obviously. So far so OK. But I want to restrict the
cases where I retrieve the body, for only those documents I get a status
code between 200 and 299. It seems reasonable to me: it would save us to
download lots of unuseful bytes.
But trying to retrieve a redirected url (with 302) with GET method I
crashed myself against a wall. After that, indeed, I tryed to retrieve
another URL, but I received an error during the header parsing: the stream
contained the body of the previous message and so the header parsing
couldn't work ...
These are the steps I did:
- Retrieving a redirected URL
- Making a GET request
- Analyse the header and then the response status code
- It was 302. So, as it doesn't belong to the 2xx codes family, its body
has not to be read. So we skip the read of the body procedure.
- Retrieving the next URL
- Making a GET request
- Analyse the header
- Here I found the error. While parsing the header, cos the stream buffer
contained the previous response body.
The chances are 3, in order of favour:
- get the stream buffer empty with a command (I hope it exists, tell me 'YES')
- send a signal to the connection (maybe by closing it too - I hope it
won't be !!!)
- reading the body even if I don't need it (I don't think it's much good)
Please help me, I trust you ...
Ciao
-Gabriele
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Gabriele Bartolini
U.O. Rete Civica - Comune di Prato
Prato - Italia - Europa
e-mail: [EMAIL PROTECTED]
http://www.po-net.prato.it
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