static inline BOOL closeCodeIsValid()

in SocketRocket/SRWebSocket.m [697:720]

• 20 lines of code
• 11 McCabe index (conditional complexity)

static inline BOOL closeCodeIsValid(int closeCode) {
    if (closeCode < 1000) {
        return NO;
    }

    if (closeCode >= 1000 && closeCode <= 1011) {
        if (closeCode == 1004 ||
            closeCode == 1005 ||
            closeCode == 1006) {
            return NO;
        }
        return YES;
    }

    if (closeCode >= 3000 && closeCode <= 3999) {
        return YES;
    }

    if (closeCode >= 4000 && closeCode <= 4999) {
        return YES;
    }

    return NO;
}