feat(routing): add Network matcher for per-protocol node selection

Add Network() matcher to the routing DSL so nodes can be selected based on
connection network type (tcp/udp). Uses prefix matching so Network("tcp")
matches tcp, tcp4, tcp6 and Network("udp") matches udp, udp4, udp6.

- core/routing: add Network field to Request struct (core v0.4.3)
- x/routing/matcher: add network() matcher registered as "Network"
- x/hop: pass options.Network to routing.Request in Select()

Fixes go-gost/gost#703

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d
 	github.com/gin-contrib/cors v1.7.2
 	github.com/gin-gonic/gin v1.10.1
-	github.com/go-gost/core v0.4.2
+	github.com/go-gost/core v0.4.3
 	github.com/go-gost/go-shadowsocks2 v0.1.3
 	github.com/go-gost/gosocks4 v0.1.0
 	github.com/go-gost/gosocks5 v0.5.0
@@ -31,6 +31,7 @@ require (
 	github.com/refraction-networking/utls v1.8.2
 	github.com/rs/xid v1.3.0
 	github.com/shadowsocks/go-shadowsocks2 v0.1.5
+	github.com/shirou/gopsutil/v3 v3.24.5
 	github.com/songgao/water v0.0.0-20200317203138-2b4b6d7c09d8
 	github.com/spf13/viper v1.19.0
 	github.com/stretchr/testify v1.11.1
@@ -59,9 +60,15 @@ require (
 
 require (
 	github.com/andybalholm/brotli v1.0.6 // indirect
+	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/klauspost/compress v1.17.4 // indirect
-	github.com/shirou/gopsutil/v3 v3.24.5 // indirect
+	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
+	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
+	github.com/shoenig/go-m1cpu v0.1.6 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/tklauser/go-sysconf v0.3.12 // indirect
+	github.com/tklauser/numcpus v0.6.1 // indirect
+	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 )
 
 require (