/*
 * Copyright (C) 2010-2015 Mamadou Diop.
 *	
 * This file is part of Open Source Doubango Framework.
 *
 * DOUBANGO is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *	
 * DOUBANGO is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *	
 * You should have received a copy of the GNU General Public License
 * along with DOUBANGO.
 *
 */
 */
 
 %%{
 	machine thttp_machine_ws;
 
 	extension_param = token ( "=" ( token | quoted_string ) )?;
 	NZDIGIT = "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9";
 	version = DIGIT | ( NZDIGIT DIGIT ) | ( "1" DIGIT DIGIT ) | ( "2" DIGIT DIGIT );
 	base64_character = ALPHA | DIGIT | "+" | "/";
 	base64_data = base64_character{4};
 	base64_padding = ( base64_character{2} "==" ) | ( base64_character{3} "=" );
 	base64_value_non_empty = ( base64_data+ base64_padding? ) | base64_padding;
 	Sec_WebSocket_Key = base64_value_non_empty;
 	registered_token = token;
 	extension_token = registered_token;
 	extension = extension_token ( ";" extension_param )*;
 	extension_list = extension ( COMMA extension )*;
 	Sec_WebSocket_Extensions = extension_list;
 	Sec_WebSocket_Protocol_Client = token ( COMMA token )*;
 	Sec_WebSocket_Version_Client = version;
 	Sec_WebSocket_Accept = base64_value_non_empty;
 	Sec_WebSocket_Protocol_Server = token;
 	Sec_WebSocket_Version_Server = version ( COMMA version )*;
 	Sec_WebSocket_Version = version ( COMMA version )*;
 	Sec_WebSocket_Protocol = token ( COMMA token )*;
 
 }%%