how can I use keep alive idle connections for GET requests and new connections to POST requests (no replies)

Hi,

To avoid some Issues I need to create new connections for POST (upload file) requests.
But, If I disable keepalive under upstream I am getting the following error
" 99: Cannot assign requested address) while connecting to upstream, "

Is there a possibility to use idle connections for GET requests and new connection for POSTS requests?
or is there a way to control TCP new connections or to control TIME_WAIT connections.

TIME_WAIT connections causes "99: Cannot assign requested address) while connecting to upstream, " error


Thanks
Rambabu