Databases
StackOverflow2013
Postsdbo
POAndroid HTTP POST Content-Length Exception
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAndroid HTTP POST Content-Length Exception
    primarykey
    data
    text
    <p>I have a simple program that sends an HTTP POST.</p> <p>It works <strong>only</strong> if the line <code>httpost.addheader("Content-Length","18")</code> is <strong>not</strong> present. Otherwise it fails. In the code, it's the line with "--->"<br> Commenting this line out makes the POST succeed.</p> <p>Android does not send the POST if that line is in the code and returns with a Protocol Exception error. I used Wireshark to verify that nothing is sent.</p> <p>Any ideas why setting the Content-Length generates an exception?</p> <p>The code:</p> <pre><code>HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://test.com/a_post.php"); try { List&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(2); // DATA nameValuePairs.add(new BasicNameValuePair("mydata", "abcde")); nameValuePairs.add(new BasicNameValuePair("id","29")); StringEntity se = new UrlEncodedFormEntity(nameValuePairs); httppost.setEntity(se); int seLength = (int) se.getContentLength(); String seLengthStr = Integer.toString(seLength); httppost.addHeader("Content-Type","application/x-www-form-urlencoded"); ----&gt; httppost.addHeader("Content-Length", "18"); ResponseHandler&lt;String&gt; responseHandler = new BasicResponseHandler(); String httpResponse=httpclient.execute(httppost, responseHandler); responseV.setText(responseV.getText()+ " " + httpResponse); } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USdakshbhatt21
    1. USTori
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAndroid HTTP POST Content-Length Exception
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    2. VO
      singulars
      1. POAndroid HTTP POST Content-Length Exception
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COThe stack trace says that the error is because the Content-Length Header is already present. Is that's the case, what's the method to set the Content-Length?
      singulars
      1. POAndroid HTTP POST Content-Length Exception
      1. USTori
    2. COWhy do you want to manually add a Content-Length, if it's already there? If you need to change it for some reason, it will then most likely be incorrect, causing a HTTP error.
      singulars
      1. POAndroid HTTP POST Content-Length Exception
      1. USTuomasR
    3. COIn the HttpClient docs, it states that HttpClient sets the Content-length for you, so you don't have to. Having seen the source code, HttpClient actually checks to see if it has already been added manually, and throws the ProtocolException if it already exists
      singulars
      1. POAndroid HTTP POST Content-Length Exception
      1. USJames Allen
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload