restructured the project to comply community guideline, for others check release note

internal/proxy/fields/stream_scheme.go

@@ -0,0 +1,43 @@
+package fields
+
+import (
+	"fmt"
+	"strings"
+
+	E "github.com/yusing/go-proxy/internal/error"
+)
+
+type StreamScheme struct {
+	ListeningScheme Scheme `json:"listening"`
+	ProxyScheme     Scheme `json:"proxy"`
+}
+
+func ValidateStreamScheme(s string) (ss *StreamScheme, err E.NestedError) {
+	ss = &StreamScheme{}
+	parts := strings.Split(s, ":")
+	if len(parts) == 1 {
+		parts = []string{s, s}
+	} else if len(parts) != 2 {
+		return nil, E.Invalid("stream scheme", s)
+	}
+	ss.ListeningScheme, err = NewScheme(parts[0])
+	if err.HasError() {
+		return nil, err
+	}
+	ss.ProxyScheme, err = NewScheme(parts[1])
+	if err.HasError() {
+		return nil, err
+	}
+	return ss, nil
+}
+
+func (s StreamScheme) String() string {
+	return fmt.Sprintf("%s:%s", s.ListeningScheme, s.ProxyScheme)
+}
+
+// IsCoherent checks if the ListeningScheme and ProxyScheme of the StreamScheme are equal.
+//
+// It returns a boolean value indicating whether the ListeningScheme and ProxyScheme are equal.
+func (s StreamScheme) IsCoherent() bool {
+	return s.ListeningScheme == s.ProxyScheme
+}