Add new admin panel, failover, dns fallback, providers, limiters. Update XHTTP

examples/admin_panel-manager-node/manager.json

@@ -0,0 +1,90 @@
+{
+  "log": {
+    "level": "info"
+  },
+  "dns": {
+    "servers": [
+      {
+        "type": "local",
+        "tag": "default"
+      }
+    ]
+  },
+  "inbounds": [],
+  "outbounds": [
+    {
+      "type": "direct",
+      "tag": "direct-out"
+    }
+  ],
+  "route": {
+    "rules": [
+      {
+        "protocol": "dns",
+        "action": "hijack-dns"
+      }
+    ],
+    "final": "direct-out"
+  },
+  "services": [
+    {
+      "type": "manager",
+      "tag": "my-manager",
+      "database": {
+        "driver": "sqlite",
+        "dsn": "file:manager.db?_pragma=foreign_keys(on)&_pragma=journal_mode(wal)&_pragma=busy_timeout(5000)" // also supported Postgresql
+      }
+    },
+    {
+      "type": "manager-api",
+      "tag": "my-manager-api",
+      "api_type": "server",
+      "protocol_type": "http",
+      "listen": "0.0.0.0",
+      "listen_port": 8080,
+      "manager": "my-manager",
+      "api_key": "change-me-secret",
+      "cors": {
+        "allowed_origins": ["*"],
+        "max_age": 600
+      },
+      // Enable TLS for production deployments:
+      // "tls": { // https://sing-box.sagernet.org/configuration/shared/tls/#inbound
+      //   "enabled": true,
+      //   "server_name": "manager.example.com",
+      //   "certificate_path": "fullchain.pem",
+      //   "key_path": "privkey.pem"
+      // }
+    },
+    {
+      "type": "node-manager-api",
+      "tag": "my-node-manager-api",
+      "api_type": "server",
+      "listen": "0.0.0.0",
+      "listen_port": 7000,
+      "manager": "my-manager",
+      "api_key": "change-me-secret",
+      // Enable TLS for production deployments (the node connects via gRPC over h2):
+      // "tls": { // https://sing-box.sagernet.org/configuration/shared/tls/#inbound
+      //   "enabled": true,
+      //   "server_name": "example.com",
+      //   "alpn": "h2", // h3 for QUIC
+      //   "certificate_path": "fullchain.pem",
+      //   "key_path": "privkey.pem"
+      // }
+    },
+    {
+      "type": "admin-panel",
+      "tag": "admin",
+      "listen": "0.0.0.0",
+      "listen_port": 8081,
+      // Enable TLS for production deployments:
+      // "tls": { // https://sing-box.sagernet.org/configuration/shared/tls/#inbound
+      //   "enabled": true,
+      //   "server_name": "panel.example.com",
+      //   "certificate_path": "fullchain.pem",
+      //   "key_path": "privkey.pem"
+      // }
+    }
+  ]
+}