Session API

switchy wraps FreeSWITCH‘s event header fields and call management commands inside the switchy.models.Session type.

There is already slew of supported commands and we encourage you to add any more you might require via a pull request on github.

Accessing FreeSWITCH variables

Every Session instance has access to all it’s latest received event headers via standard python __getitem__ access:

sess['Caller-Direction']

All chronological event data is kept until a Session is destroyed. If you’d like to access older state you can use the underlying Events instance:

# access the first value of my_var
sess.events[-1]['variable_my_var']

Note that there are some distinctions to be made between different types of variable access and in particular it would seem that FreeSWITCH‘s event headers follow the info app names:

# standard headers require no prefix
sess['FreeSWITCH-IPv6']
sess['Channel-State']
sess['Unique-ID']

# channel variables require a 'variable_' prefix
sess['variable_sip_req_uri']
sess['variable_sip_contact_user']
sess['variable_read_codec']
sess['sip_h_X-switchy_app']