SAP jConnect determines when to use the gateway where the TDS-tunnelling servlet is installed based on the path extension of the proxy connection property.
SAP jConnect recognizes the servlet path extension to the proxy and invokes the servlet on the designated gateway.
http://host:port/TDS-servlet-path
SAP jConnect invokes the TDS-tunnelling servlet on the Web server to tunnel TDS through HTTP. The servlet path must be the path you defined in the servlet alias list for your Web server.