this method returns the requesting protocol of the operation that is requesting authentication concode_field_sep Authenticator default_authenticator concode_elem_sep String protocol concode_elem_sep String scheme concode_elem_sep int port concode_elem_sep String host concode_elem_sep InetAddress addr concode_elem_sep String prompt concode_field_sep InetAddress getRequestingSite concode_elem_sep String getRequestingScheme concode_elem_sep int getRequestingPort concode_elem_sep PasswordAuthentication getPasswordAuthentication concode_elem_sep PasswordAuthentication requestPasswordAuthentication concode_elem_sep PasswordAuthentication requestPasswordAuthentication concode_elem_sep String getRequestingHost concode_elem_sep void setDefault concode_elem_sep String getRequestingPrompt
String function ( ) { return ( protocol ) ; }