tiny.stun.Capacity

1pub const Capacity = struct {2    message_bytes: u17,3    payload_bytes: u16,4    attributes: u14,56    pub fn derive(limits: Limits) EncodeError!Capacity {7        if (limits.message_bytes < header_bytes) return error.InvalidLimits;8        if (limits.message_bytes > max_message_bytes) return error.InvalidLimits;9        if ((limits.message_bytes & 3) != 0) return error.InvalidLimits;10        const payload = std.math.sub(u17, limits.message_bytes, header_bytes) catch11            return error.CapacityOverflow;12        if (payload > max_payload_bytes) return error.InvalidLimits;13        return .{14            .message_bytes = limits.message_bytes,15            .payload_bytes = @intCast(payload),16            .attributes = limits.attributes,17        };18    }19};

1pub const Capacity = message_mod.Capacity;