We use the java11 runtime and F1 instances, spring boot 2.2.5 and didn't experience the following issues with other apps deployed on GAE.
When trying to perform an outbound (POST) request we end up with an SocketTimeoutException: java.util.concurrent.ExecutionException: org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://xyz.tld/": connect timed out; nested exception is java.net.SocketTimeoutException: connect timed out at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:na] at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:205) ~[na:na] at a.b.c.service.AddressService.get(AddressService.java:63) ~[classes!/:0-0-4] at a.b.c.rest.AddressRequestsController.d(AddressRequestsController.java:73) ~[classes!/:0-0-4] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.4.RELEASE.jar!/:5.2.4.RELEASE] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.4.RELEASE.jar!/:5.2.4.RELEASE] ... There's nothing fancy about resttemplate: restTemplate = new RestTemplateBuilder() .setConnectTimeout(Duration.ofMillis(CONNECT_TIMEOUT)) .setReadTimeout(Duration.ofMillis(READ_TIMEOUT)) .build(); ... restTemplate.postForEntity(searchUrl, request, String.class); With timeouts of 5 and 8 seconds. Runs fine locally and the other end is alive and responsive. Any ideas what's going wrong? -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/53482cbc-6e50-4461-a323-b0007bb84e6e%40googlegroups.com.
