Re: [quicwg/base-drafts] Why is ipAddress variable length (#2158)

[Kazuho Oku <[e-mail]>]

@ekr 
> Unfortunately, it does not, because the version I proposed would include the size of the port in the length.

I see. So your version is equivalent to:
```
struct IPv4Address {
    byte ipaddr[4];
    uint16 port;
};

struct IPv6Address {
    byte ipaddr[16];
    uint16 port;
};

struct Address {
    enum { ... } ipVersion;
    struct {
        switch (ipVersion) {
        case v4: IPv4Address;
        case v6: IPv6Address;
       }
    } <0..2^8-1>;
};
```

That works for me, and I think it makes sense to define `port` as a property of each address type.

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