struct sip_message {

	char *Start_Line;
	char *Accept;
	char *Accept_Encoding;
	char *Accept_Language;
	char *Alert_Info;
	char *Allow;
	char *Authentication_Info;
	char *Authorization;
	char *Call_ID;
	char *Call_Info;
	char *Contact;
	char *Content_Disposition;
	char *Content_Encoding;
	char *Content_Language;
	char *Content_Length;
	char *Content_Type;
	char *Cseq;
	char *Date;
	char *Error_Info;
	char *Expires;
	char *From;
	char *In_Reply_To;
	char *Max_Forwards;
	char *Min_Expires;
	char *MIME_Version;
	char *Organization;
	char *Priority;
	char *Proxy_Authenticate;
	char *Proxy_Authorization;
	char *Proxy_Require;
	char *Record_Route;
	char *Reply_To;
	char *Require;
	char *Retry_After;
	char *Route;
	char *Server;
	char *Subject;
	char *Supported;
	char *Timestamp;
	char *To;
	char *Unsupported;
	char *User_Agent;
	char *Via;
	char *Warning;
	char *WWW_Authenticate;
	
	char *Body;
};

unsigned int parse_msg(char *msg, struct sip_message *msip);