Add UDP timeout route option

docs/configuration/route/rule_action.md

@@ -41,7 +41,8 @@ See `route-options` fields below.
   "network_strategy": "",
   "fallback_delay": "",
   "udp_disable_domain_unmapping": false,
-  "udp_connect": false
+  "udp_connect": false,
+  "udp_timeout": ""
 }
 ```
 
@@ -86,6 +87,28 @@ do not support receiving UDP packets with domain addresses, such as Surge.
 
 If enabled, attempts to connect UDP connection to the destination instead of listen.
 
+#### udp_timeout
+
+Timeout for UDP connections.
+
+Setting a larger value than the UDP timeout in inbounds will have no effect.
+
+Default value for protocol sniffed connections:
+
+| Timeout | Protocol             |
+|---------|----------------------|
+| `10s`   | `dns`, `ntp`, `stun` |
+| `30s`   | `quic`, `dtls`       |
+
+If no protocol is sniffed, the following ports will be recognized as protocols by default:
+
+| Port | Protocol |
+|------|----------|
+| 53   | `dns`    |
+| 123  | `ntp`    |
+| 443  | `quic`   |
+| 3478 | `stun`   |
+
 ### reject
 
 ```json

docs/configuration/route/rule_action.zh.md

@@ -37,7 +37,8 @@ icon: material/new-box
   "network_strategy": "",
   "fallback_delay": "",
   "udp_disable_domain_unmapping": false,
-  "udp_connect": false
+  "udp_connect": false,
+  "udp_timeout": ""
 }
 ```
 
@@ -84,6 +85,28 @@ icon: material/new-box
 
 如果启用，将尝试将 UDP 连接 connect 到目标而不是 listen。
 
+#### udp_timeout
+
+UDP 连接超时时间。
+
+设置比入站 UDP 超时更大的值将无效。
+
+已探测协议连接的默认值：
+
+| 超时    | 协议                   |
+|-------|----------------------|
+| `10s` | `dns`, `ntp`, `stun` |
+| `30s` | `quic`, `dtls`       |
+
+如果没有探测到协议，以下端口将默认识别为协议：
+
+| 端口   | 协议     |
+|------|--------|
+| 53   | `dns`  |
+| 123  | `ntp`  |
+| 443  | `quic` |
+| 3478 | `stun` |
+
 ### reject
 
 ```json