[asio-users] Async HTTP and requests requiring long processing time

[Bruno C. <bco...@rc...>]

Hi,

I have an HTTP server based on HTTP Server 3. We run it on Boost 1.42 on 
Debian 6.

The server works fine for years. Recently we added a new feature that 
requires a long processing time like 10 minutes. When even a single 
client make this request, our server starts slowly to no more accept 
incoming requests. On the client side, we stay connected indefinitely.

With netstat I can see a lot of sockets associated to my server process 
in the CLOSE_WAIT state. Under normal operation, without this long 
processing it does not happens.

It is similar to the previous post by George van Venrooij. In my case, I 
ended up testing with simple wget so I am sure the problem is not on the 
client side.

Beside this long request, the load is very small like 10 clients at 1 
request per second.

Does anybody experience a similar behavior? Is doing long processing 
supported or is there a way to make it works.

BTW, I changed the code to run the long processing in a background 
thread and return immediately to the client and the problem is gone.

Bruno.