CloseableHttpClient: connection hangs forever - httpclient

Question

I have a problem with a connection managed by CloseableHttpClient.
A Spring service manages ny connection:
#Service
public class MyService {
...
private CloseableHttpClient closeableHttpClient;
public String setPayment() {
...
try {
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader(ACCEPT, APP_JSON);
httpPost.setHeader(CONTENT_TYPE, APP_JSON);
StringEntity entity = new StringEntity(request, CHARSET);
httpPost.setEntity(entity);
CloseableHttpResponse response = closeableHttpClient.execute(httpPost);
logger.info("Execution");
} catch (IOException e) {
logger.error("Error");
}
}
}
My setPayment method is called max 3 times when execution is not successful. Sometimes after the first execution my method hangs with no response.
Any suggestion is welcomed.

Answer 1

I suggest you to do the following:
1) set timeout in a constructor:
public MyService() {
int timeout = 180;
RequestConfig config = RequestConfig.custom()
.setConnectTimeout(timeout * 1000)
.setConnectionRequestTimeout(timeout * 1000)
.setSocketTimeout(timeout * 1000).build();
closeableHttpClient = HttpClientBuilder.create().setDefaultRequestConfig(config).build();
}
2) use try-with-resources to manage CloseableHttpResponse
public String setPayment() {
...
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader(ACCEPT, APP_JSON);
httpPost.setHeader(CONTENT_TYPE, APP_JSON);
StringEntity entity = new StringEntity(request, CHARSET);
httpPost.setEntity(entity);
try (CloseableHttpResponse response = closeableHttpClient.execute(httpPost)){
logger.info("Execution");
} catch (IOException e) {
logger.error("Error");
}
}