httpclient - w3toppers.com

HttpDelete with body

Have you tried overriding HttpEntityEnclosingRequestBase as follows: import org.apache.http.client.methods.HttpEntityEnclosingRequestBase; import java.net.URI; import org.apache.http.annotation.NotThreadSafe; @NotThreadSafe class HttpDeleteWithBody extends HttpEntityEnclosingRequestBase { public static final String METHOD_NAME = “DELETE”; public String getMethod() { return METHOD_NAME; } public HttpDeleteWithBody(final String uri) { super(); setURI(URI.create(uri)); } public HttpDeleteWithBody(final URI uri) { super(); setURI(uri); } public HttpDeleteWithBody() { super(); } } … Read more

HttpClient and using proxy – constantly getting 407

You’re setting the proxy credentials in the wrong place. httpClientHandler.Credentials are the credentials you give to the server after the proxy has already established a connection. If you get these wrong, you’ll probably get a 401 or 403 response. You need to set the credentials given to the proxy, or it will refuse to connect … Read more

URLConnection or HTTPClient: Which offers better functionality and more efficiency?

I believe in this case it’s up to whichever API you find more natural. Generally, HTTPClient is more efficient inside a server side application (or maybe batch application), because it allows you to specify a multithreaded connection pool, with a max number of total connections, and a max per host connection count (which ensures concurrent … Read more

Python urllib2 Progress Hook

Here’s a fully working example that builds on Anurag’s approach of chunking in a response. My version allows you to set the the chunk size, and attach an arbitrary reporting function: import urllib2, sys def chunk_report(bytes_so_far, chunk_size, total_size): percent = float(bytes_so_far) / total_size percent = round(percent*100, 2) sys.stdout.write(“Downloaded %d of %d bytes (%0.2f%%)\r” % (bytes_so_far, … Read more

HttpGet with HTTPS : SSLPeerUnverifiedException

Note: Do not do this in production code, use http instead, or the actual self signed public key as suggested above. On HttpClient 4.xx: import static org.junit.Assert.assertEquals; import java.security.KeyManagementException; import java.security.NoSuchAlgorithmException; import java.security.cert.X509Certificate; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.conn.scheme.Scheme; import org.apache.http.conn.ssl.SSLSocketFactory; import org.apache.http.impl.client.DefaultHttpClient; import org.junit.Test; public class HttpClientTrustingAllCertsTest { … Read more

Httpclient 4, error 302. How to redirect?

For 4.1 version: DefaultHttpClient httpclient = new DefaultHttpClient(); httpclient.setRedirectStrategy(new DefaultRedirectStrategy() { public boolean isRedirected(HttpRequest request, HttpResponse response, HttpContext context) { boolean isRedirect=false; try { isRedirect = super.isRedirected(request, response, context); } catch (ProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } if (!isRedirect) { int responseCode = response.getStatusLine().getStatusCode(); if (responseCode == 301 || responseCode == … Read more

Exception using HttpRequest.execute(): Invalid use of SingleClientConnManager: connection still allocated

You need to consume the response body before you can reuse the connection for another request. You should not only read the response status, but read the response InputStream fully to the last byte whereby you just ignore the read bytes.

Handling HttpClient Redirects

For HttpClient 4.3: HttpClient instance = HttpClientBuilder.create() .setRedirectStrategy(new LaxRedirectStrategy()).build(); For HttpClient 4.2: DefaultHttpClient client = new DefaultHttpClient(); client.setRedirectStrategy(new LaxRedirectStrategy()); For HttpClient < 4.2: DefaultHttpClient client = new DefaultHttpClient(); client.setRedirectStrategy(new DefaultRedirectStrategy() { /** Redirectable methods. */ private String[] REDIRECT_METHODS = new String[] { HttpGet.METHOD_NAME, HttpPost.METHOD_NAME, HttpHead.METHOD_NAME }; @Override protected boolean isRedirectable(String method) { for (String m … Read more

Apache HttpClient Interim Error: NoHttpResponseException

Most likely persistent connections that are kept alive by the connection manager become stale. That is, the target server shuts down the connection on its end without HttpClient being able to react to that event, while the connection is being idle, thus rendering the connection half-closed or ‘stale’. Usually this is not a problem. HttpClient … Read more

How do I manage cookies with HttpClient in Android and/or Java?

You need to use HttpContext. Set cookie store to context and pass context long with HttpGet/HttpPost in execute method. Hope this should help. See example: Complete code can be found here // Create a local instance of cookie store CookieStore cookieStore = new BasicCookieStore(); // Create local HTTP context HttpContext localContext = new BasicHttpContext(); // … Read more