Add UDP timeout route option

Author: nekohasekai

adapter/inbound.go

@@ -70,10 +70,12 @@ type InboundContext struct {
 	InboundOptions            option.InboundOptions
 	UDPDisableDomainUnmapping bool
 	UDPConnect                bool
-	NetworkStrategy           C.NetworkStrategy
-	NetworkType               []C.InterfaceType
-	FallbackNetworkType       []C.InterfaceType
-	FallbackDelay             time.Duration
+	UDPTimeout                time.Duration
+
+	NetworkStrategy     C.NetworkStrategy
+	NetworkType         []C.InterfaceType
+	FallbackNetworkType []C.InterfaceType
+	FallbackDelay       time.Duration
 
 	DNSServer string
 

adapter/outbound/default.go

@@ -10,6 +10,7 @@ const (
 	ProtocolDTLS       = "dtls"
 	ProtocolSSH        = "ssh"
 	ProtocolRDP        = "rdp"
+	ProtocolNTP        = "ntp"
 )
 
 const (

constant/protocol.go

@@ -9,8 +9,6 @@ const (
 	TCPTimeout                 = 15 * time.Second
 	ReadPayloadTimeout         = 300 * time.Millisecond
 	DNSTimeout                 = 10 * time.Second
-	QUICTimeout                = 30 * time.Second
-	STUNTimeout                = 15 * time.Second
 	UDPTimeout                 = 5 * time.Minute
 	DefaultURLTestInterval     = 3 * time.Minute
 	DefaultURLTestIdleTimeout  = 30 * time.Minute
@@ -19,3 +17,18 @@ const (
 	FatalStopTimeout           = 10 * time.Second
 	FakeIPMetadataSaveInterval = 10 * time.Second
 )
+
+var PortProtocols = map[uint16]string{
+	53:   ProtocolDNS,
+	123:  ProtocolNTP,
+	3478: ProtocolSTUN,
+	443:  ProtocolQUIC,
+}
+
+var ProtocolTimeouts = map[string]time.Duration{
+	ProtocolDNS:  10 * time.Second,
+	ProtocolNTP:  10 * time.Second,
+	ProtocolSTUN: 10 * time.Second,
+	ProtocolQUIC: 30 * time.Second,
+	ProtocolDTLS: 30 * time.Second,
+}

constant/timeout.go

@@ -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.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

docs/configuration/route/rule_action.zh.md

@@ -148,8 +148,9 @@ type RawRouteOptionsActionOptions struct {
 	NetworkStrategy NetworkStrategy `json:"network_strategy,omitempty"`
 	FallbackDelay   uint32          `json:"fallback_delay,omitempty"`
 
-	UDPDisableDomainUnmapping bool `json:"udp_disable_domain_unmapping,omitempty"`
-	UDPConnect                bool `json:"udp_connect,omitempty"`
+	UDPDisableDomainUnmapping bool               `json:"udp_disable_domain_unmapping,omitempty"`
+	UDPConnect                bool               `json:"udp_connect,omitempty"`
+	UDPTimeout                badoption.Duration `json:"udp_timeout,omitempty"`
 }
 
 type RouteOptionsActionOptions RawRouteOptionsActionOptions

option/rule_action.go

@@ -14,7 +14,7 @@ type WireGuardEndpointOptions struct {
 	PrivateKey string                           `json:"private_key"`
 	ListenPort uint16                           `json:"listen_port,omitempty"`
 	Peers      []WireGuardPeer                  `json:"peers,omitempty"`
-	UDPTimeout UDPTimeoutCompat                 `json:"udp_timeout,omitempty"`
+	UDPTimeout badoption.Duration               `json:"udp_timeout,omitempty"`
 	Workers    int                              `json:"workers,omitempty"`
 	DialerOptions
 }