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Posted to httpclient-users@hc.apache.org by Roland Weber <ht...@dubioso.net> on 2007/02/19 19:52:50 UTC
Re: Problem posting login information (ajax)
Hello Marcelo,
> But this url has a redirect!
What is the problem? HttpClient typically follows redirects
automatically if configured to do that:
http://jakarta.apache.org/commons/httpclient/apidocs/org/apache/commons/httpclient/HttpMethod.html#setFollowRedirects(boolean)
There are few cases where HttpClient is not allowed to follow
the redirect without user interaction. In that case, your
application will get a 3xx response and you can take the
target URL from the "Location" header in the response.
hope that helps,
Roland
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Re: Problem posting login information (ajax)
Posted by Roland Weber <ht...@dubioso.net>.
Hello Marcelo,
> I always send the parameters to the final url when posting data,
That is wrong. If the server application expects the POST data at
URL X and then sends you to URL Y after processing the posted data,
you can't just post the data to URL Y and expect that to work.
Please take the time to study the Client HTTP Programming Primer:
http://wiki.apache.org/jakarta-httpclient/ForAbsoluteBeginners
> Besides, when I set method.setFollowRedirects(true) and execute this
> method, i receive an error:
> java.lang.IllegalArgumentException: Entity enclosing requests cannot be
> redirected without user intervention
That is an error message from HttpClient...
> and a statuscode 500.
...and that is a status code from the server. How do you get both
at once? If an exception is thrown, you shouldn't get a status code!?
Regarding the exception (and Michelle's question), see RFC 2616.
Section 10.3 (http://rfc.net/rfc2616.html#s10.3):
The action
required MAY be carried out by the user agent without interaction
with the user if and only if the method used in the second request is
GET or HEAD.
Section 10.3.3 (http://rfc.net/rfc2616.html#s10.3.3):
If the 302 status code is received in response to a request other
than GET or HEAD, the user agent MUST NOT automatically redirect the
request unless it can be confirmed by the user
Section 10.3.8 (http://rfc.net/rfc2616.html#s10.3.8):
If the 307 status code is received in response to a request other
than GET or HEAD, the user agent MUST NOT automatically redirect the
request unless it can be confirmed by the user
HttpClient will never interact with the user directly, and therefore
is not allowed to follow such redirects automatically.
cheers,
Roland
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Re: Problem posting login information (ajax)
Posted by Marcelo Chryssovergis <ma...@iea.org.br>.
Well,
I always send the parameters to the final url when posting data, and this is
not the final.
Besides, when I set method.setFollowRedirects(true) and execute this method,
i receive an error:
java.lang.IllegalArgumentException: Entity enclosing requests cannot be
redirected without user intervention
and a statuscode 500.
ideas?
Thanks,
Marcelo
----- Original Message -----
From: "Roland Weber" <ht...@dubioso.net>
To: "HttpClient User Discussion" <ht...@jakarta.apache.org>
Sent: Monday, February 19, 2007 3:52 PM
Subject: Re: Problem posting login information (ajax)
> Hello Marcelo,
>
>> But this url has a redirect!
>
> What is the problem? HttpClient typically follows redirects
> automatically if configured to do that:
> http://jakarta.apache.org/commons/httpclient/apidocs/org/apache/commons/httpclient/HttpMethod.html#setFollowRedirects(boolean)
>
> There are few cases where HttpClient is not allowed to follow
> the redirect without user interaction. In that case, your
> application will get a 3xx response and you can take the
> target URL from the "Location" header in the response.
>
> hope that helps,
> Roland
>
>
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> To unsubscribe, e-mail: httpclient-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: httpclient-user-help@jakarta.apache.org
>
>
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Re: Problem posting login information (ajax)
Posted by Marcelo Chryssovergis <ma...@iea.org.br>.
When I try to access directly (with a browser) the url I´m using to send the
login parameters with httpclient, it returns an alert box:
"Error. This may be due to an unsupported browser.
See the mailing lists at http://www.getahead.ltd.uk/dwr/ for more
information"
>
> What is the problem? HttpClient typically follows redirects
> automatically if configured to do that:
> http://jakarta.apache.org/commons/httpclient/apidocs/org/apache/commons/httpclient/HttpMethod.html#setFollowRedirects(boolean)
>
> There are few cases where HttpClient is not allowed to follow
> the redirect without user interaction. In that case, your
> application will get a 3xx response and you can take the
> target URL from the "Location" header in the response.
>
> hope that helps,
> Roland
>
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Problem posting login information and redirect
Posted by Erxiang Liu <er...@us.ibm.com>.
I have the same problem. I did a post and also setFollowRedirects to true.
But it did not go to the Location automatically. I had to
manually read the location from the header and then do a get again. Any
idea?
thanks,
Michelle
Roland Weber
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"HttpClient User Re: Problem posting login
Discussion" information (ajax)
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g>
Hello Marcelo,
> But this url has a redirect!
What is the problem? HttpClient typically follows redirects
automatically if configured to do that:
http://jakarta.apache.org/commons/httpclient/apidocs/org/apache/commons/httpclient/HttpMethod.html#setFollowRedirects(boolean)
There are few cases where HttpClient is not allowed to follow
the redirect without user interaction. In that case, your
application will get a 3xx response and you can take the
target URL from the "Location" header in the response.
hope that helps,
Roland
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