SIP Methods
This page describes the Sip methods that are handled by default in Yate and how to enable the ones that are not generically handled.
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SIP Methods in Yate
Some standard SIP methods can be handled generically in Yate like INVITE, CANCEL, ACK, BYE, REFER, OPTIONS and REGISTER.
For example SIP method INFO in a dialog is handled internally by Yate but dialogless is handled generically (by using parameter lazy100 in ysipchan.conf).
Additional methods
Use section [methods] from ysipchan.conf to allow/restrict the processing of specific SIP methods. For enabled methods yate will generate internal messages with name sip.<methodname> that can be handled from other modules.
Examples
Enable MESSAGE Method
This example allows chat and short files transfer between Twinkle clients using MESSAGE request method. A MESSAGE request method transports instant messages using SIP.
regexroute.conf:
[extra]
sip.message=120
sip.publish=120
msg.route=25
msg.execute=90
[sip.message]
${xsip_type}^$=415
.*=echo Got SIP MESSAGE type '${xsip_type}' ${xsip_body_encoding} from '${username}': ${xsip_body}
.*=enqueue msg.execute;caller=${caller};called=${called};\
domain=${domain};callto=lateroute/${called};\
body_encoding=${xsip_body_encoding};type=${xsip_type};text=${xsip_body}
.*=200
[sip.publish]
${xsip_type}^application/pidf+xml$^=415
${xsip_body}\(.*\)=echo Got SIP PRESENCE from '${username}':
.*=200
[msg.route]
.*=rename call.route;message=msg.route
[msg.execute]
${callto}^sip/\(sip:.*\)$=rename xsip.generate;\
method=MESSAGE;uri=;sip_From=;\
xsip_type=${type$text/plain};xsip_body_encoding=${body_encoding};\
xsip_body=${text}
In ysipchan.conf:
[general] maxpkt=4096 generate=yes [methods] message=yes publish=yes
Enable SUBSCRIBE Method
ysipchan.conf
[methods] subscribe=yes
You then configure the allowed events for subscribing in sipfeatures.conf and define the logic for SUBSCRIBE/NOTIFY in subscription.conf.
See also
