Apache Httpclient Ssl

When you need to support self-signed SSL certificates in your Apache HttpClient based application you can use the contributed EasySSLProtocolSocketFactory as described in the HttpClient docs.

Apache Httpclient Ssl Data
Apache Httpclient Ssl
Apache Httpclient Ssl Example
Apache Httpclient Ssl Verification
Apache Httpclient Download

Apache Httpclient Ssl Data

Apache HttpClient - Custom SSL Context, Apache HttpClient - Custom SSL Context - Using Secure Socket Layer, you can establish a secured connection between the client and server. It helps to Instantiate an object of type org.apache.commons.httpclient.protocol.Protocol. The new instance would be created with a valid URI protocol scheme (https in. Apache HttpClient - Proxy Authentication - In this chapter, we will learn how to create a HttpRequest authenticated using username and password and tunnel it through a proxy to a target host, using an ex.

Instead of using HttpClient’s HostConfiguration object directly you’d modify its protocol socket factory in your code like so:

</div><table><tbody><tr><td><div><div>2</div><div>4</div><div>6</div><div>8</div><div>10</div><div>12</div><div>14</div><div>16</div></div></td><td><div><div><span>if</span><span>(</span><span>config</span><span>.</span><span>isAllowSelfSignedCertificates</span><span>(</span><span>)</span><span>)</span><span>{</span></div><div><span>ProtocolSocketFactory </span><span>factory</span>=<span>new</span><span>EasySSLProtocolSocketFactory</span><span>(</span><span>)</span><span>;</span></div><div><span>URI </span><span>uri</span>=<span>new</span><span>URI</span><span>(</span><span>config</span><span>.</span><span>getBaseUrl</span><span>(</span><span>)</span><span>)</span><span>;</span></div><div><span>if</span><span>(</span><span>port</span>-<span>1</span><span>)</span><span>{</span></div><div><span>}</span></div><div><span>Protocol </span><span>easyHttps</span>=<span>new</span><span>Protocol</span><span>(</span><span>uri</span><span>.</span><span>getScheme</span><span>(</span><span>)</span><span>,</span><span>factory</span><span>,</span><span>port</span><span>)</span><span>;</span></div><div><span>hostConfiguration</span><span>.</span><span>setHost</span><span>(</span><span>uri</span><span>.</span><span>getHost</span><span>(</span><span>)</span><span>,</span><span>port</span><span>,</span><span>easyHttps</span><span>)</span><span>;</span></div><div><span>throw</span><span>new</span><span>IOException</span><span>(</span><span>'could not parse URI '</span>+<span>config</span><span>.</span><span>getBaseUrl</span><span>(</span><span>)</span><span>,</span><span>e</span><span>)</span><span>;</span></div><div><span>}</span></div></div></td></tr></tbody></table><p>Somewhere you’d instantiate a HttpClient object. Then you get its host config through HttpClient#getHostConfiguration() – I stored this in the hostConfiguration variable. The if, the config variable, checking for port, etc. is all my own code and has nothing to do with HttpClient directly.</p><p>There is one caveat, though! Never use absolute URIs against the HttpClient 3.x with the EasySSLProtocolSocketFactory in place! If you did you’d get the dreaded</p><div><textarea wrap='soft' readonly='>javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

javax.net.ssl.SSLHandshakeException:sun.security.validator.ValidatorException:PKIX path building failed:sun.security.provider.certpath.SunCertPathBuilderException:unable tofind valid certification path torequested target

I found that the HttpClient 3.x has the following code in its executeMethod() method:

<ul><li>Apache HttpClient Resources</li></ul><ul><li>Selected Reading</li></ul><br /><p>Using Secure Socket Layer, you can establish a secured connection between the client andserver. It helps to safeguard sensitive information such as credit card numbers, usernames, passwords, pins, etc.</p><p>You can make connections more secure by creating your own SSL context using the <b>HttpClient</b> library.</p><p>Follow the steps given below to customize SSLContext using HttpClient library −</p><h2>Step 1 - Create SSLContextBuilder object</h2><p><b>SSLContextBuilder</b> is the builder for the SSLContext objects. Create its object using the <b>custom()</b> method of the <b>SSLContexts</b> class.</p><h2>Step 2 - Load the Keystore</h2><p>In the path <b>Java_home_directory/jre/lib/security/</b>, you can find a file named cacerts. Save this as your key store file (with extension .jks). Load the keystore file and, its password (which is <b>changeit</b> by default) using the <b>loadTrustMaterial()</b> method of the <b>SSLContextBuilder</b> class.</p><h2>Step 3 - build an SSLContext object</h2><p>An SSLContext object represents a secure socket protocol implementation. Build an SSLContext using the <b>build()</b> method.</p><h2>Step 4 - Creating SSLConnectionSocketFactory object</h2><img src='https://upload-images.jianshu.io/upload_images/2860514-c374fbcf4f32b7ca.png?imageMogr2/auto-orient/strip|imageView2/2/w/1200/format/webp' alt='Ssl' title='Ssl' /><p><b>SSLConnectionSocketFactory</b> is a layered socket factory for TSL and SSL connections. Using this, you can verify the Https server using a list of trusted certificates and authenticate the given Https server.</p><p>You can create this in many ways. Depending on the way you create an <b>SSLConnectionSocketFactory</b> object, you can allow all hosts, allow only self-signedcertificates, allow only particular protocols, etc.</p><p><b>To allow only particular protocols</b>, create <b>SSLConnectionSocketFactory</b> object by passing an SSLContext object, string array representing the protocols need to be supported, string array representing the cipher suits need to be supported and a HostnameVerifier object to its constructor.</p><p><b>To allow all hosts,</b> create <b>SSLConnectionSocketFactory</b> object by passing a SSLContext object and a <b>NoopHostnameVerifier</b> object.</p><img src='https://image.slidesharecdn.com/sslforslideshare-110810134615-phpapp02/95/ssl-in-a-nutshell-14-728.jpg?cb=1312984039' alt='Apache Httpclient Ssl' title='Apache Httpclient Ssl' /><h2>Step 5 - Create an HttpClientBuilder object</h2><p>Create an HttpClientBuilder object using the <b>custom()</b> method of the <b>HttpClients</b> class.</p><h2>Step 6 - Set the SSLConnectionSocketFactory object</h2><p>Set the SSLConnectionSocketFactory object to the <b>HttpClientBuilder</b> using the <b>setSSLSocketFactory()</b> method.</p><h2>Step 7 - Build the CloseableHttpClient object</h2><p>Build the <b>CloseableHttpClient</b> object by calling the <b>build()</b> method.</p><h2>Step 8 - Create an HttpGet object</h2><p>The <b>HttpGet</b> class represents the HTTP GET request which retrieves the information ofthe given server using a URI.</p><h3 id='apache-httpclient-ssl'>Apache Httpclient Ssl</h3><p>Create a HTTP GET request by instantiating the HttpGet class by passing a string representing the URI.</p><h3 id='apache-httpclient-ssl-example'>Apache Httpclient Ssl Example</h3><h2>Step 9 - Execute the request</h2><p>Execute the request using the <b>execute()</b> method.</p><h3 id='apache-httpclient-ssl-verification'>Apache Httpclient Ssl Verification</h3><h2>Example</h2><p>Following example demonstrates the customization of the SSLContrext −</p><h2>Output</h2><h3 id='apache-httpclient-download'>Apache Httpclient Download</h3><p>On executing, the above program generates the following output.</p><br><br><a href='https://netlify.mix-goapp.com/keygen-for-microsoft-office-2010-mac.html#BhTEr=VVQXEQdTX1EGRgcMAlYEVAlfDwgdUhMAU1AGSVtMFRFSCQgGCkEdRxdfHwgDVx0DSUdKX1ZBAgwbVQIBGApNTQRLU1NWBBoBSAEfXFxLZGBJAAoDH10GFVxRBRsdWRERHUkVBhxBRRFXUhYKUzU=' target='_blank'><img src='https://cdn-ak.f.st-hatena.com/images/fotolife/r/ruriatunifoefec/20200910/20200910011350.png' style='cursor:pointer;display:block;margin-left:auto;margin-right:auto;'></a><br><br></p>
			
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