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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1253) URIBuilder setParameter() method could exceed the http header size.
Date Thu, 25 Oct 2012 21:29:12 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13484495#comment-13484495
] 

Oleg Kalnichevski commented on HTTPCLIENT-1253:
-----------------------------------------------

Bizarre. On the contrary, I find the idea of request URI parameters getting copied into request
body confusing and utterly illogical. There is more to POST method than submitting URL encoded
HTML forms. 

Anyhow, there is a new class in the 4.3 branch called RequestBuilder [1]. The builder currently
takes an immutable URI as input. It can be changed to accept URI elements individually and
assemble them differently depending on particular composition of the request. In case of a
POST method with no explicitly body the builder could pack request parameters into body instead
of URI. 

Feel free to contribute a patch.

Oleg

[1] http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/httpclient/src/main/java/org/apache/http/client/methods/RequestBuilder.java
                
> URIBuilder setParameter() method could exceed the http header size.  
> ---------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-1253
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1253
>             Project: HttpComponents HttpClient
>          Issue Type: Improvement
>          Components: HttpClient
>    Affects Versions: 4.2.1
>            Reporter: Alan T Chen
>            Priority: Minor
>
> Maybe the URIBuilder is not designed with POST vs GET in mind so it will construct the
form parameters into the header by default.  However, this is an issue when the content exceeds
what the header allows.
> the following code will cause issues when the length of the parameters exceed the http
header.
>                 // TODO: need to pass in the target host/port
>                 URIBuilder builder = new URIBuilder();
>                 builder.setScheme("http").setHost(targetHost).setPort(targetPort).setPath(s);
>                 Map<String, String> params = getRequestParameters(servletRequest);
>                 for (String key : params.keySet())
>                 {
>                     String value = params.get(key);
>                     builder.setParameter(key, value);
>                 }
>                 httpPost = new HttpPost(builder.build());
> ======== 
> I have to fix it by using the httpPost.setEntity() method to ensure the form post will
insert all parameters into the body of the http post request instead of the header.
>                 httpPost = new HttpPost(builder.build());
>                 Map<String, String> params = getRequestParameters(servletRequest);
>                 List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(20);
>                 // add the params
>                 for (String key : params.keySet())
>                 {
>                     String value = params.get(key);
>                     // only add the http param if both key and value are not null
>                     if( key != null && value != null )
>                         nameValuePairs.add(new BasicNameValuePair(key, value));
>                 }
>                 httpPost.setEntity( new UrlEncodedFormEntity(nameValuePairs) );

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