feature server should send USER call to the sbc sip that is connect with the user (#949)

* feature server should send USER call to the sbc sip that is connect with the user

* feature server should send USER call to the sbc sip that is connect with the user

* feature server should send USER call to the sbc sip that is connect with the user

* fix review comment

* add env variable to enable the feature

* add env variable to enable the feature

* add env variable to enable the feature

* minor test update

---------

Co-authored-by: Dave Horton <daveh@beachdognet.com>

lib/utils/network.js

@@ -0,0 +1,32 @@
+
+/**
+ * Parses a list of hostport entries and selects the first one that matches the specified protocol,
+ * excluding any entries with the localhost IP address ('127.0.0.1').
+ *
+ * Each hostport entry should be in the format: 'protocol/ip:port'
+ *
+ * @param {Object} logger - A logging object with a 'debug' method for logging debug messages.
+ * @param {string} hostport - A comma-separated string containing hostport entries.
+ * @param {string} protocol - The protocol to match (e.g., 'udp', 'tcp').
+ * @returns {Array} An array containing:
+ * 0: protocol
+ * 1: ip address
+ * 2: port
+ */
+const selectHostPort = (logger, hostport, protocol) => {
+  logger.debug(`selectHostPort: ${hostport}, ${protocol}`);
+  const sel = hostport
+    .split(',')
+    .map((hp) => {
+      const arr = /(.*)\/(.*):(.*)/.exec(hp);
+      return [arr[1], arr[2], arr[3]];
+    })
+    .filter((hp) => {
+      return hp[0] === protocol && hp[1] !== '127.0.0.1';
+    });
+  return sel[0];
+};
+
+module.exports = {
+  selectHostPort
+};