Add user rule item

docs/configuration/route/rule.md

@@ -9,6 +9,10 @@
           "mixed-in"
         ],
         "network": "tcp",
+        "user": [
+          "usera",
+          "userb"
+        ],
         "protocol": [
           "tls",
           "http",
@@ -79,6 +83,14 @@
 
 Tags of [inbound](../inbound).
 
+#### user
+
+Username, see each inbound for details.
+
+#### protocol
+
+Sniffed protocol, see [Sniff](/configuration/route/sniff/) for details.
+
 #### network
 
 `tcp` or `udp`.

docs/configuration/route/sniff.md

@@ -0,0 +1,10 @@
+If enabled in the inbound, the protocol and domain name (if present) of by the connection can be sniffed.
+
+#### Supported Protocols
+
+|  Network  |  Protocol  |  Domain Name  |
+|:---------:|:----------:|:-------------:|
+|    TCP    |    HTTP    |     Host      |
+|    TCP    |    TLS     |  Server Name  |
+|    UDP    |    QUIC    |  Server Name  |
+|    UDP    |    STUN    |       /       |