preparing for v0.5

src/proxy/fields/host.go

@@ -0,0 +1,20 @@
+package fields
+
+import (
+	E "github.com/yusing/go-proxy/error"
+	F "github.com/yusing/go-proxy/utils/functional"
+)
+
+type Host struct{ F.Stringable }
+type Subdomain = Alias
+
+func NewHost(s string) (Host, E.NestedError) {
+	return Host{F.NewStringable(s)}, E.Nil()
+}
+
+func (h Host) Subdomain() (*Subdomain, E.NestedError) {
+	if i := h.IndexRune(':'); i != -1 {
+		return &Subdomain{h.SubStr(0, i)}, E.Nil()
+	}
+	return nil, E.Invalid("host", h)
+}