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Java PayPal API integration through proxy server

Getting the below exception while integrating PayPal API with Java, based on the analysis the direct communication to the API is not enabled from the server and the communication should be directed via Proxy server.

09:10:50.525 [main] ERROR com.paypal.base.HttpConnection -  Retry  No : 1...
09:11:54.577 [main] ERROR com.paypal.base.HttpConnection - Caught exception while handling error response java.net.ConnectException: Connection timed out
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.7.0_67]

Setting the proxy server in the API:

 HashMap<String,String> config=new HashMap<String,String>();
config.put("http.UseProxy", "true");
config.put("http.ProxyPort", "80");
config.put("http.ProxyHost", "proxy.server.com");
config.put("http.ProxyUserName", null);
config.put("http.ProxyPassword", null);

APIContext context = new APIContext(clientId, clientSecret, "sandbox",config);

Change the values of  ProxyHost,  ProxyPort, ProxyUserName and ProxyPassword accordingly.

The communication will be success after this.

Issue while integrating Adobe Experience Manager(AEM) with Dynamic Tag Management(DTM) through HTTP Proxy

The below exception is thrown while integrating Adobe Experience Manager(AEM) with Dynamic Tag Management(DTM)


08.05.2017 14:06:35.894 *ERROR* [10.208.56.253 [1494270332788] POST /etc/cloudservices/dynamictagmanagement/test/jcr:content.companies.json HTTP/1.1] com.adobe.cq.dtm.impl.util.DTMConfigurationUtil Failed to obtain a response from the DTM API Server.
org.apache.http.conn.ConnectTimeoutException: Connect to api.omniture.com:443 [api.omniture.com/192.243.232.77] failed: Connection timed out
        at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:138)
        at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:318)
        at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363)
        at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219)
        at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
        at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
        at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
        at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)
        at com.adobe.cq.dtm.impl.util.DTMConfigurationUtil.callDTMApi(DTMConfigurationUtil.java:210)
        at com.adobe.cq.dtm.impl.servlets.DTMCompaniesServlet.doPost(DTMCompaniesServlet.java:58)

Caused by: java.net.ConnectException: Connection timed out
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:579)
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:239)
        at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:123)
        ... 138 common frames omitted

Based on the analysis the Dynamic Tag Management(DTM) cloud connector is not using the the proxy server details configured to establish the connection.
This is the defect with the connector, raise a ticket with Adobe support team to  receive the fix.

As a temporary fix update DTMConfigurationUtil.java in bundle - /libs/cq/cloudservices/install/cq-dtm-0.1.8.jar to support proxy server while establishing the connectivity.

DTMConfigurationUtil.java - callDTMApi

 HttpHost proxy = new HttpHost("proxy.com",80);
 RequestConfig config = RequestConfig.custom().setProxy(proxy).build();   
 apiRequest.setConfig(config);

Refer the following post for updating the java class in a bundle - https://www.albinsblog.com/2017/04/updating-salesforce-connector-jarcq-mcm-salesforce-adobe-cq5-aem.html https://www.albinsblog.com/2017/04/updating-salesforce-connector-jarcq-mcm-salesforce-adobe-cq5-aem.html

This post is written based on the AEM version AEM 6.1 SP1.