I want to connect to an intranet server, the url that I need to connect is:
URLConnection conn = new URL("https://mywebsite").openConnection();
When I reach to the connect method call through:`
conn.connect();
I'm getting the following exception:
java.io.IOException: Unable to tunnel through proxy. Proxy rerurns HTTP/1.1 503 Service Unavailable"
at sun.net.www.protocol.httpHttpURLConnection.doTunneling
How can I solve this exception, I have tried many solutions published on the net, but without any luck.
What helped to me was to unset all proxy properties in the environment (http_proxy etc env variables; java properties such as -Dhttp.proxyHost=.. had, surprisingly, no effect). My URL (https://mycompany.example.com/service) was accessible directly (because it was on the internal network) but not through the proxy.
So check where the service lives and check for proxy-related environment variables.
I hade a similar case. I'm using the maven jaxws-maven-plugin plugin and trying to generate java code from a WSDL laying on another server.
The problem was that the plugin is picking up the environment variable httpproxy, but not the noproxy variable. I solved that by adding it manually as a JVM argument:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>jaxws-maven-plugin</artifactId>
<version>2.4.1</version>
<executions>
<execution>
<id>wsdltoJava</id>
<goals>
<goal>wsimport</goal>
</goals>
<configuration>
<wsdlUrls>
<wsdlUrl>https://someService.yourcompany.net/Service/Service?wsdl</wsdlUrl>
</wsdlUrls>
<vmArgs>
<vmArg>-Dhttp.nonProxyHosts=*.yourcompany.net</vmArg>
</vmArgs>
<keep>true</keep>
<packageName>com.yourcompany.package</packageName>
<sourceDestDir>your/target/directory</sourceDestDir>
</configuration>
</execution>
</executions>