XMLRPC access extremely slow

[FrankSommer-64]

When using version 12.9.1 of tcms-api it takes about a second for each server request over https.
Version 12.9 and below are fine.
I haven't tested plain http, but I guess the reason could be SSL certificate checking upon each request.

[FrankSommer-64]

Problem isn't SSL, but a design change in the API. TCMS().exec creates a new connection proxy every time. Application code now needs to operate on TCMS().exec instead of TCMS() to avoid performance loss:

connection = TCMS()
connection.exec.TestPlan.filter(...)
connection.exec.TestCase.filter(...)
...
will be opening a new connection for every connection.exec.

proxy = TCMS().exec
proxy.TestPlan.filter(...)
proxy.TestCase.filter(...)
...
will use just one connection.

Behaviour should be mentioned in the documentation.