First commit merge

server.js

@@ -0,0 +1,101 @@
+import Srf from "drachtio-srf";
+import logger from "./utils/logger.js";
+import config from "./config/default.json" with { type: "json" };
+
+/**
+ * NexusVoice SIP Border Controller - Drachtio Implementation
+ *
+ * This server provides equivalent functionality to the Kamailio configuration:
+ * - SIP request validation and security filtering
+ * - User registration and location management
+ * - Call routing and media handling
+ * - Integration with external systems (Asterisk, RTP proxy)
+ */
+class SipServer {
+  /**
+   * Ctor
+   */
+  constructor() {
+    this.srf = new Srf();
+    this.config = config;
+  }
+
+  /**
+   * Initialize the SIP server
+   */
+  async initialize() {
+    try {
+      logger.info("Initializing NexusVoice SBC...");
+
+      // Configure SIP listening parameters
+      const sipConfig = this.config.sip;
+
+      // Connect to drachtio server
+      await this.srf.connect({
+        host: sipConfig.host,
+        port: sipConfig.port,
+        transport: sipConfig.transport,
+      });
+
+      logger.info(
+        "Connected to drachtio server on %s:%s",
+        sipConfig.host,
+        sipConfig.port,
+      );
+
+      logger.info("NexusVoice SBC initialized successfully");
+    } catch (error) {
+      logger.error("Failed to initialize SBC: %s", error.message);
+      throw error;
+    }
+  }
+
+  /**
+   * Start the server
+   */
+  async start() {
+    try {
+      await this.initialize();
+      logger.info("NexusVoice SBC started successfully");
+    } catch (error) {
+      logger.error("Failed to start SBC: %s", error.message);
+      process.exit(1);
+    }
+  }
+
+  /**
+   * Graceful shutdown
+   */
+  async shutdown() {
+    logger.info("Shutting down NexusVoice SBC...");
+
+    try {
+      await this.srf.disconnect();
+      logger.info("NexusVoice SBC shutdown complete");
+    } catch (error) {
+      logger.error("Error during shutdown: %s", error.message);
+    }
+  }
+}
+
+// Create and start the server instance
+const server = new SipServer();
+
+// Handle graceful shutdown
+process.on("SIGTERM", async () => {
+  await server.shutdown();
+  process.exit(0);
+});
+
+process.on("SIGINT", async () => {
+  await server.shutdown();
+  process.exit(0);
+});
+
+// Start the server
+server.start().catch((error) => {
+  logger.error("Failed to start server: %s", error.message);
+  process.exit(1);
+});
+
+export default SipServer;