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javaapiweb-serviceshttptimeout

I/O timeout exception (java.net.ConnectException) When calling API

I'm using HttpClient in order to call an API and get its response, and I have set a 60 secs timeout. In this 60 seconds, Java try and retry to connect to the API by each 20 seconds and shows the exception. In the final of 60 secs, it stops retrying.

My doubt is: this I/O Exception is caused by the API? Since I set a timeout higher than the exception returns (each 20 seconds).

Here's the code and the log:

HttpClient client = new HttpClient();
GetMethod getMethod = new GetMethod(GET_TICKETS_URL);
getMethod.setRequestHeader("Content-Type", "application/json");
getMethod.setRequestHeader("Accept", "application/json");
getMethod.getParams().setSoTimeout(60000);
logger.info("Calling service: " + getMethod.getPath());

client.getHttpConnectionManager().getParams().setConnectionTimeout(60000);
client.getHttpConnectionManager().getParams().setSoTimeout(60000);
client.getParams().setSoTimeout(60000);
client.getParams().setConnectionManagerTimeout(60000);

int getTicketsResponse = client.executeMethod(getMethod);

[2020-08-27 13:41:25,215] pool-3-thread-1 br.com.pfm.tasks.baml.task Task INFO  - Calling service: /
[2020-08-27 13:41:46,228] pool-3-thread-1 org.apache.commons.httpclient.HttpMethodDirector INFO  - I/O exception (java.net.ConnectException) caught when processing request: Connection timed out: connect
[2020-08-27 13:41:46,228] pool-3-thread-1 org.apache.commons.httpclient.HttpMethodDirector INFO  - Retrying request
[2020-08-27 13:42:07,242] pool-3-thread-1 org.apache.commons.httpclient.HttpMethodDirector INFO  - I/O exception (java.net.ConnectException) caught when processing request: Connection timed out: connect
[2020-08-27 13:42:07,242] pool-3-thread-1 org.apache.commons.httpclient.HttpMethodDirector INFO  - Retrying request
[2020-08-27 13:42:28,258] pool-3-thread-1 org.apache.commons.httpclient.HttpMethodDirector INFO  - I/O exception (java.net.ConnectException) caught when processing request: Connection timed out: connect
[2020-08-27 13:42:28,258] pool-3-thread-1 org.apache.commons.httpclient.HttpMethodDirector INFO  - Retrying request
[2020-08-27 13:42:49,271] pool-3-thread-1 br.com.pfm.tasks.baml.task ERROR - java.net.ConnectException: Connection timed out: connect
Solution

  • I/O exception is occur when there is an issue in reading from the url, can you able to get the stack stacktrace, will give an insight about the issue, it could be the server unavailable or not found anything from http 400+

    so please add this to your catch block and will help you get an idea, what went wrong.

    catch(Exception e)
{
   e.printStacktrace();
}