apache-httpclient-4.x

Correct way to implement HTTP Connection Pooling

Beware of how HTTP Client pools work, it may be improving performance during a short period of time. Check the analysis below: From PoolingHttpClientConnectionManager javadocs The handling of stale connections was changed in version 4.4. Previously, the code would check every connection by default before re-using it. The code now only checks the connection if … Read more

How to use Socks 5 proxy with Apache HTTP Client 4?

SOCK is a TCP/IP level proxy protocol, not HTTP. It is not supported by HttpClient out of the box. One can customize HttpClient to establish connections via a SOCKS proxy by using a custom connection socket factory EDIT: changes to SSL instead of plain sockets Registry<ConnectionSocketFactory> reg = RegistryBuilder.<ConnectionSocketFactory>create() .register(“http”, PlainConnectionSocketFactory.INSTANCE) .register(“https”, new MyConnectionSocketFactory(SSLContexts.createSystemDefault())) .build(); … Read more

HttpClientBuilder basic auth

From the Preemptive Authentication Documentation here: http://hc.apache.org/httpcomponents-client-ga/tutorial/html/authentication.html By default, httpclient will not provide credentials preemptively, it will first create a HTTP request without authentication parameters. This is by design, as a security precaution, and as part of the spec. But, this causes issues if you don’t retry the connection, or wherever you’re connecting to expects … Read more

HttpClient.getParams() deprecated. What should I use instead?

You can use an URIBuilder object URIBuilder builder = new URIBuilder(“http://example.com/”); builder.setParameter(“var1”, “value1”).setParameter(“var2”, “value2”); HttpGet request = new HttpGet(builder.build()); // get back the url parameters List<NameValuePair> params = builder.getQueryParams(); I think you are a bit confused about the getParams() method from the client or HttpMethod, getParams() does not return the URL parameters or something like … Read more

Receiving Multipart Response on client side (ClosableHttpResponse)

I have finally got a workaround for it. I will be using javax mail MimeMultipart. Below is a code snipped for the solution:- ByteArrayDataSource datasource = new ByteArrayDataSource(in, “multipart/form-data”); MimeMultipart multipart = new MimeMultipart(datasource); int count = multipart.getCount(); log.debug(“count ” + count); for (int i = 0; i < count; i++) { BodyPart bodyPart = … Read more