const xmlCommandPrefix and xmlCommandSuffix

check.go

@@ -27,7 +27,7 @@ func (c *Conn) CheckDomain(domains ...string) (*DomainCheckResponse, error) {
 
 func encodeDomainCheck(buf *bytes.Buffer, domains []string, extFee bool) error {
 	buf.Reset()
-	buf.Write(xmlCommandPrefix)
+	buf.WriteString(xmlCommandPrefix)
 	buf.WriteString(`<check xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">`)
 	for _, domain := range domains {
 		buf.WriteString(`<domain:check><domain:name>`)
@@ -55,7 +55,7 @@ func encodeDomainCheck(buf *bytes.Buffer, domains []string, extFee bool) error {
 		buf.WriteString(`</extension>`)
 	}
 
-	buf.Write(xmlCommandSuffix)
+	buf.WriteString(xmlCommandSuffix)
 	return nil
 }
 

session.go

@@ -32,7 +32,7 @@ func (c *Conn) writeLogin(user, password, newPassword string) error {
 
 func encodeLogin(buf *bytes.Buffer, user, password, newPassword, version, language string, objects, extensions []string) error {
 	buf.Reset()
-	buf.Write(xmlCommandPrefix)
+	buf.WriteString(xmlCommandPrefix)
 	buf.WriteString(`<login><clID>`)
 	xml.EscapeText(buf, []byte(user))
 	buf.WriteString(`</clID><pw>`)
@@ -63,6 +63,6 @@ func encodeLogin(buf *bytes.Buffer, user, password, newPassword, version, langua
 		buf.WriteString(`</svcExtension>`)
 	}
 	buf.WriteString(`</svcs></login>`)
-	buf.Write(xmlCommandSuffix)
+	buf.WriteString(xmlCommandSuffix)
 	return nil
 }

xml.go

@@ -3,14 +3,8 @@ package epp
 import "encoding/xml"
 
 const (
-	startEPP = `<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">`
-	endEPP   = `</epp>`
-)
-
-var (
-	xmlHeader        = []byte(xml.Header)
-	xmlPrefix        = []byte(xml.Header + startEPP)
-	xmlSuffix        = []byte(endEPP)
-	xmlCommandPrefix = []byte(xml.Header + startEPP + `<command>`)
-	xmlCommandSuffix = []byte(`</command>` + endEPP)
+	startEPP         = `<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">`
+	endEPP           = `</epp>`
+	xmlCommandPrefix = xml.Header + startEPP + `<command>`
+	xmlCommandSuffix = `</command>` + endEPP
 )