package voip;

public interface SIPMsg
{
    public static int ST_OTHERS    = 0; //  Uninterested packets
    public static int ST_INVITE    = 1; //  Received INVITE
    public static int ST_INVITE_OK = 2; //  Received 200 (OK) and INVITE
    public static int ST_INVITE_ACK= 3; //  Not being used
    public static int ST_BYE       = 4; //  Received BYE
    public static int ST_BYE_OK    = 5; //  Received BYE and ACK
    public static int ST_CANCEL    = 6; //  Received CANCEL

    public String executeSIPMethod(String packetStr, String fromStr);


    public int getStatus();


    public int setStatus(String packet);


    public boolean isInviteRequest (String packet);

    public boolean isByeRequest (String packet);

    public boolean isInviteOkStatus (String packet);

    public boolean isByeOkStatus (String packet);

    public boolean isAckStatus (String packet);

    public byte[] encryptMedia (byte[] input);

    public byte[] decryptMedia (byte[] input);
}