I am using Nusoap to connect to a WSDL service on another server. I am using this service to sync 2 databases. Unfortunately, the host with the call script is saying that my script is creating too many connections to the other server. At one point, we had over 200 concurrent connections open.

I assumed that NuSoap was closing the connections before making another one, but maybe it is not. Does anyone have any idea on how to fix this?

In case of NuSoap, if you run it over HTTP/1.1 and your server supports keep-alive HTTP feature, you have to add Connection: Close header to have connection closed. Otherwise it remains open.