Unknown Host Exception DNS Error

Question

I am trying to connect to the service

https://staging.identitymanagement.lexisnexis.com/identity-proofing/services/identityProofingServiceWS/v2

which is a web service hosted by Lexis Nexis.

Following exception is encountered.

  staging.identitymanagement.lexisnexis.com (java.net.UnknownHostException)
  java.net.PlainSocketImpl:177 (null)
  Initialisation Failure: staging.identitymanagement.lexisnexis.com
  java.net.UnknownHostException: staging.identitymanagement.lexisnexis.com
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:550)
at com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.
      connect      (BaseSSLSocketImpl.java:141)
at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:272)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:329)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.
     getNewHttpClient(AbstractDelegateHttpsURLConnection.java:172)

I am trying to call the same using mule integration services.However, we are still getting this issue for Unknown Host Exception. I have also correctly added the proxy details for the same.

Please guide me the way ahead.

How are you trying to connect (code) and how have you added the proxy details? — DanielBarbarian, Oct 04 '13 at 09:03
the link seems to be wrong. It's pointing to some `xml` file. It needs to be a service only then will you get a response. — Aneesh, Oct 04 '13 at 09:24

score 0 · Answer 1 · answered Oct 04 '13 at 09:02

Seems like a network proxy issue to me. http://download.oracle.com/javase/6/docs/technotes/guides/net/proxies.html

Have you added proxy into your vm arguments(JAVA_OPTIONS) in the server startup script? It should look something like this.

JAVA_FLAGS=-Dhttp.proxyHost=hostname.example.com -Dhttp.proxyPort=8080
java ${JAVA_FLAGS} ...

I also recommend setting the proxies programmatically,

public void setProxy() {
    if (isUseHTTPProxy()) {
        // HTTP/HTTPS Proxy
        System.setProperty("http.proxyHost", getHTTPHost());
        System.setProperty("http.proxyPort", getHTTPPort());
        System.setProperty("https.proxyHost", getHTTPHost());
        System.setProperty("https.proxyPort", getHTTPPort());
        if (isUseHTTPAuth()) {
            String encoded = new String(Base64.encodeBase64((getHTTPUsername() + ":" + getHTTPPassword()).getBytes()));
            con.setRequestProperty("Proxy-Authorization", "Basic " + encoded);
            Authenticator.setDefault(new ProxyAuth(getHTTPUsername(), getHTTPPassword()));
        }
    }

Unknown Host Exception DNS Error

1 Answers1