java.net.connectexception when sending string request

Question

In my batch application when I am sending requests across a network using a Web Service and Java, after running about 30000 requests and receiving the responses, the program throws a java.net.connectexception connection timed out exception.

I am using WildFly, along with some Java code in the middle to configure the requests (Strings) before sending it across the network.

After research the possible reasons I found for this is that there is either a Firewall blocking my access, which can't be true since it ran 90% of the requests already.

I've also seen somewhere that says that I could have overloaded the server, although I'm not sure what that means exactly.

Answer 1

You have filled up the server's listen backlog queue. This is caused by creating new connections faster than the server can accept them. You should look into connection pooling at the client, and handling multiple requests per connection at the server.