Security

Best way to connect to HEC with Java SDK

angrydead
Explorer

Question: What is the best way to connect to HEC with the Java SDK?

SDK JAR Version: 1.6.4.0

Currently, I am using the below code.

loginArgs.setToken("c0973521-5e90-4364-b551-cb7b1fcbfcf6");
loginArgs.setHost("https://hec.dev.splunk.domain.int:13510/services/collector/event");
loginArgs.setPort(13510);
HttpService.setSslSecurityProtocol(SSLSecurityProtocol.TLSv1_1);
Service service = Service.connect(loginArgs);

Which returns an error that the URI can't be null even though the host is being set, which leads me to believe that it's malformed.

java.lang.IllegalArgumentException: URI can't be null.
at sun.net.spi.DefaultProxySelector.select(DefaultProxySelector.java:148)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1150)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1334)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1309)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:259)
at com.splunk.HttpService.send(HttpService.java:445)
at com.splunk.Service.send(Service.java:1295)
at com.splunk.HttpService.post(HttpService.java:348)
at com.splunk.JobCollection.create(JobCollection.java:81)
at com.splunk.JobCollection.create(JobCollection.java:62)
at com.mastercard.salt.client.http.HECConnector.execute(HECConnector.java:73)
at com.mastercard.salt.client.http.SplunkHECTest.setup(SplunkHECTest.java:17)
0 Karma

johnebgood
Path Finder

From what I'm seeing the setHost() argument should be the hostname or IP address only. I'm attempting to use the SDK to connect to HEC for the first time, I'll report back my success.

0 Karma

angrydead
Explorer

I wound up just writing a wrapper for cURL by leveraging Java's ProcessBuilder. Running into a tricky error where the same command is being executed in Java and Shell with different results. So perhaps they aren't the same.

0 Karma

cartoonbilly
Engager

You're using curl rather than using an HttpClient in java? That seems crazy.

So to be clear, you never did find a way to use the actual Splunk sdk to connect to an HEC?

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Why Splunk Customers Should Attend Cisco Live 2026 Las Vegas

Why Splunk Customers Should Attend Cisco Live 2026 Las Vegas     Cisco Live 2026 is almost here, and this ...

What Is the Name of the USB Key Inserted by Bob Smith? (BOTS Hint, Not the Answer)

Hello Splunkers,   So you searched, “what is the name of the usb key inserted by bob smith?”  Not gonna lie… ...

Automating Threat Operations and Threat Hunting with Recorded Future

    Automating Threat Operations and Threat Hunting with Recorded Future June 29, 2026 | Register   Is your ...