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--- kamailio:k43-async-sip-routing-nodejs [2015/09/07 12:39] – [RTJSON Routing Document] admin
+++ kamailio:k43-async-sip-routing-nodejs [2015/09/07 12:53] – [RTJSON Routing Document] admin
@@ Line 74: / Line 74: @@
 The example above results in: the request will be routed to sip:127.0.0.1:5080, via sip:127.0.0.1:5082, sip:127.0.0.1:5084, sip:127.0.0.1:5086; it will be sent using local socket udp:127.0.0.1:5060; From header display name will be set to **Alice** and From URI to **sip:alice@wonderland.com**; To header display name will be set to **Bob** and To URI to **sip:alice@wonderland.com**; branch flags will be updated with 8; retransmission will be done for 5000 milliseconds, waiting 30000 milliseconds while ringing.
+==== EVAPI Processing ====
+EVAPI is sort of generic framework to push events to external application from inside kamailio.cfg via TCP connections. It has the capability of suspending the processing of the SIP request until there is a response from the external application. By suspending the SIP request, other SIP messages can be processes, thus not blocking Kamailio while waiting for event response. This asynchronous mechanism enables high throughput for SIP routing.
 ===== Presentations =====
@@ Line 937: / Line 941: @@
   * http://nodejs.org
-A simple sample application is shown next:
+A simple sample application is shown next example. It connects to Kamailio's EVAPI socket, waiting for messages with json content serialized as netstring. There response will contain two destinations built with static values (sip:127.0.0.1:5080 and sip:127.0.0.1:5090), again serialazed as netstring.
-<code js kanapi.js>
+To read more about nestring format, see:
+  * https://en.wikipedia.org/wiki/Netstring
+Node.js application:
+<code javascript kanapi.js>
 var net = require('net');
@@ Line 1069: / Line 1079: @@
 </code>
+===== Resources =====
+  * [[http://www.kamailio.org|Kamailio Project]]
+  * [[http://kamailio.org/docs/modules/stable/modules/evapi.html|Kamaialio EVAPI Module]]
+  * [[http://kamailio.org/docs/modules/stable/modules/rtjson.html|Kamailio RTJSON Module]]
+  * [[http://kamailio.org/docs/modules/stable/modules/rtjson.html|Kamailio JANSSON Module]]
+  * [[http://nodejs.org|NodeJS Project]]
+  * [[https://en.wikipedia.org/wiki/Netstring|Netstring Format]]

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