how to troubleshoot tcp connect timeout exceeded

If you're experiencing issues with TCP connection timeouts, here are some helpful items to consider:

The EMH uses default TCP timeouts that are already optimized for various network speeds and server configurations. Adjusting these timeouts is generally unnecessary. Timeouts during the "connect" phase are often due to server issues or problems within the server's local network. It's important to investigate these areas first. If it were possible to adjust the timeout in the EMH, it can mask underlying problems or even exacerbate them at the server side.

The connect() function should execute quickly. If it doesn't, the server might be overloaded, or there could be a bottleneck, such as acquiring a lock on a database. Increasing the timeout can add to the server load. Instead, consider reviewing the upload retry settings at the EMH. Retrying too quickly when the server is already overloaded can worsen the issue.

Ensure that the server's local network, including any routers or firewalls, has packet-level Quality of Service (QoS) properly configured. If the network is shared with other high-bandwidth or bursty activities and QoS isn't set up correctly, this could lead to packet loss, manifesting as timeout issues.

By focusing on these areas, we hope it may assist you with resolving TCP timeout problems effectively.
 
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