{
    "OK"           : 200,
    "FAILED"       : 500,
    "BAD_REQUEST"  : 400,
    "UNAUTHORIZED" : 401,
    "FORBIDDEN"    : 403,
    "ENTRY" : {
        "TOKEN_INVALID"  : 1001,
        "TOKEN_EXPIRE"   : 1002,
        "USER_NOT_EXIST" : 1003
    },

    "GATE" : {
        "NO_SERVER_AVAILABLE" : 2001
    },

    "CHAT" : {
        "CHANNEL_CREATE"    : 3001,
        "CHANNEL_NOT_EXIST" : 3002,
        "UNKNOWN_CONNECTOR" : 3003,
        "USER_NOT_ONLINE"   : 3004
    }
}