[jetty-users] Failing to connect with v9.2.2 HttpClient

[Thomas Hurd <thurd@xxxxxxxxxx>]

I am having issues using Jetty HttpClient after upgrading from v9.0.4 to 
v9.2.2.

I using RHEL 5.10 on a Dell Server.  uname -r outputs: 2.6.18-371.8.1.el5
The machine does not have support for IPv6.
I am using Oracle Java 7u60 JRE.

When using v9.2.2 Jetty JARs, I did not see any connection attempt made 
to the destination.  Running tcpdump confirmed this.
After running strace on my test program[1], I found that the socket 
syscall is failing with 9.2.2 with PF_INET6 and not retrying with 
PF_INET.  With v9.0.4, it retries with PF_INET and is successful.

strace -f output using v9.0.4:
socket(PF_INET6, SOCK_STREAM, IPPROTO_IP) = -1 EAFNOSUPPORT (Address 
family not supported by protocol)
#then later...
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 8
#Afterwards the connect syscall was successful, and request/response was 
successful

strace -f output using v9.2.2:
socket(PF_INET6, SOCK_STREAM, IPPROTO_IP) = -1 EAFNOSUPPORT (Address 
family not supported by protocol)
# no attempt at socket(PF_INET, ...)

Additionally, I tried running the program with 
-Djava.net.preferIPv4Stack=true, but with the v9.2.2 JARs it still 
attempted to create the socket with PF_INET6.
I am able to run a Jetty Servlet with v9.2.2 on the same machine without 
any issues.
I also tried v9.1.5, and had the same results as with v9.2.2

Any help would be appreciated.

[1] Test.java
// Using jetty-client, jetty-http, jetty-util, and jetty-io JARs
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.eclipse.jetty.http.HttpMethod;
import org.eclipse.jetty.http.HttpVersion;
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.client.api.Response;
import org.eclipse.jetty.client.api.Result;
import org.eclipse.jetty.client.api.Request;
import org.eclipse.jetty.client.util.BufferingResponseListener;

public class Test {
    public static void main(String[] args) {
        HttpClient jettyHttpClient = new HttpClient();
        jettyHttpClient.setConnectTimeout(30000);
        jettyHttpClient.setIdleTimeout(30000);
        final ExecutorService executorService = 
Executors.newFixedThreadPool(10);
        jettyHttpClient.setExecutor(executorService);
        try {
            jettyHttpClient.start();
            String url = "http://192.168.62.98:8090/test";; //Change 
this to valid server
            Request jettyClientRequest = jettyHttpClient.newRequest(url);
            jettyClientRequest.timeout(30000, TimeUnit.MILLISECONDS);
            jettyClientRequest.version(HttpVersion.HTTP_1_1);
            jettyClientRequest.method(HttpMethod.GET);
            jettyClientRequest.send(
                new BufferingResponseListener(500 * 1024 * 1024)
                {
                    @Override
                    public void onComplete(Result reqResult) {
                        String responseBody = getContentAsString();
                        Response response = reqResult.getResponse();
                        System.out.println(responseBody);
                        System.out.println("Status code: " + 
response.getStatus());
                        System.exit(0);
                    }
                });
        } catch (final Exception e) {
            System.out.println("Caught exception" + e);
        }
    }
}