[internal.http.request.parser.header] optimise: remove 'regexp' + some checks

internal/http/request/parser/header/public.go

@@ -1,7 +1,7 @@
 package header
 
 import (
-	"regexp"
+	// "regexp"
 	"fmt"
 	"strings"
 	"bytes"
@@ -33,18 +33,8 @@ func Parse(b []byte) (*T, error) {
 		default:                         inst.Name = UNKNOWN
 	}
 
-	/* (4) Check format */
+	/* (4) Split values */
-	checker := regexp.MustCompile(`^(?:[^,]+,\s*)*[^,]+$`)
+	inst.Values = bytes.Split(parts[1], []byte(", "))
-	if !checker.Match(parts[1]) {
-		return nil, fmt.Errorf("Invalid HTTP header value format '%s'", parts[1]);
-	}
-
-	/* (5) Normalise format */
-	normaliser := regexp.MustCompile(`,\s+`)
-	values := normaliser.ReplaceAll(parts[1], []byte(","))
-
-	/* (5) Split values */
-	inst.Values = bytes.Split(values, []byte(","))
 
 	return inst, nil