System.NullReferenceException In WriteRequest.Release() about netuv HOT 7 CLOSED

just to clarify, are the write requests submitted from another thread?

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or within the loop thread.

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write requests are submitted from another thread

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That is the reason you get this, you have to submit the writes from the same loop thread;
Here is a simple once off Async handle to send the writes:
bytes[] data = ...;
Async async = loop.CreateAsync(handle =>
{
tcp.QueueWriteStream((byte[])handle.UserToken);
handle.Dispose();
});
async.UserToken = data;
async.Send();

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If you want to constantly sending data, you have to run loop in a dedicated thread and post your requests to the loop thread. Again, you can use Async handle to wake up the loop. Similar to
https://github.com/StormHub/NetUV/blob/dev/examples/LoopThread/Program.cs

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thanks

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Again, please try EventLoop. If you have any issue, please feel free to provide feedback I can improve on.

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