Some tuning can be made to optimize HTTP comms performance. The session properties HTTP::EMaxNumTransportHandlers and HTTP::EMaxNumTransPerTranspHndlr determine how the internal queueing works.
HTTP::EMaxNumTransportHandlers determines
the maximum number of sockets that may be open at a time. Its default value
is 4.
HTTP::EMaxNumTransPerTranspHndlr determines
how many transactions may be allocated to a given transport handler (that
is, socket) before being backed up in a pending queue. Its default value is
5.