Rerun http post request if response time is longer than n seconds in Java?

I am calling REST API with Java but there are occasional delays in the response sometimes. So I want to somehow check if the response is taking too long (for example 2 or 3 seconds) and restart/rerun the http post request, because I don't need a request that is "stuck" at waiting for a response which might come a lot, a lot later.

This is my piece of code so far:

private final CloseableHttpClient client;
HttpResponse response;
List<NameValuePair> parameters;
HttpPost post;

public String getRoleData(int roleid) {
	this.post = new HttpPost(this.createUrl("role/eventdata"));
	this.post.setHeader("apikey", this.apikey);
	this.parameters = new ArrayList<>();
	this.parameters.add(new BasicNameValuePair("roleid", String.valueOf(roleid)));
	try {
		post.setEntity(new UrlEncodedFormEntity(this.parameters));
		this.response = client.execute(post);
		String JsonResponse = EntityUtils.toString(this.response.getEntity(), StandardCharsets.UTF_8);
		return JsonResponse;
	} catch (UnsupportedEncodingException ex) {
		System.out.println("API Unsupported instruction entry");
	} catch (IOException ex) {
		System.out.println("API IO issue");
	}
	return "Empty response";
}

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.http.HttpResponse;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
public class Test {
public static void main(String[] args) {
int timeoutInMillis = 10;
RequestConfig config = RequestConfig.custom().
setConnectTimeout(timeoutInMillis).
setConnectionRequestTimeout(timeoutInMillis).
setSocketTimeout(timeoutInMillis).build();
final CloseableHttpClient client = HttpClientBuilder.create()
.setDefaultRequestConfig(config).build();
HttpPost post = new HttpPost("https://reqres.in/api/api/users");
//this.post.setHeader("apikey", this.apikey);
List<NameValuePair> parameters = new ArrayList<NameValuePair>();
parameters.add(new NameValuePair("name", "test1"));
parameters.add(new NameValuePair("job", "job1"));
try {
//post.setEntity(new UrlEncodedFormEntity(this.parameters));
HttpResponse response = client.execute(post);
String jsonResponse = EntityUtils.toString(response.getEntity(), StandardCharsets.UTF_8);
System.out.println(jsonResponse);
} catch (UnsupportedEncodingException ex) {
System.out.println("API Unsupported instruction entry");
} catch (IOException ex) {
System.out.println("IO issue" + ex.getCause().getClass());
}
}
}

It should be somewhat similar to above. Check RequestConfig part & Exception handling part. You can add a flag in error handling & retry again. We are setting up timeout values here for http client. You can go through some java doc for more details.

By the way, you are using POST method which is by definition not idempotent. So you need to be careful while rerunning the same request again. The server might have processed already after you got the timeout.