httpd choking (503 errors) when stressing mod_proxy

[Ahmed Bakir <abakirwork@xxxxxxxxx>]

Hi all,

For the application I am working on right now, I need to 
send large files between two servers via Apache. I am using reverse 
proxying to accomplish this. When I hammer my host with requests from 
the client (several requests in short succession), error.log starts to 
fill up with "OS Error 10055" messages.

I notice this problem on httpd 2.2.17; I do not see it on httpd 
2.0.64. Other than the standard conversion of some module names (ex, 
mod_access) for compatibility with 2.0.64, my httpd.conf did not change.

Could anyone provide some insight on the different behavior between 2.0.x and 2.2.x?

Thanks in advance!
Ahmed