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68 lines
1.7 KiB
Nim
68 lines
1.7 KiB
Nim
{.push raises: [].}
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import
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std/[tables, hashes], stew/results, stew/shims/net as stewNet, chronos, chronicles
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import pkg/libp2p
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type NatStrategy* = enum
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NatAny
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NatUpnp
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NatPmp
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NatNone
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type IpLimits* = object
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limit*: uint
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ips: Table[IpAddress, uint]
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func hash*(ip: IpAddress): Hash =
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case ip.family
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of IpAddressFamily.IPv6:
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hash(ip.address_v6)
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of IpAddressFamily.IPv4:
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hash(ip.address_v4)
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func inc*(ipLimits: var IpLimits, ip: IpAddress): bool =
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let val = ipLimits.ips.getOrDefault(ip, 0)
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if val < ipLimits.limit:
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ipLimits.ips[ip] = val + 1
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true
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else:
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false
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func dec*(ipLimits: var IpLimits, ip: IpAddress) =
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let val = ipLimits.ips.getOrDefault(ip, 0)
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if val == 1:
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ipLimits.ips.del(ip)
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elif val > 1:
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ipLimits.ips[ip] = val - 1
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func isGlobalUnicast*(address: TransportAddress): bool =
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if address.isGlobal() and address.isUnicast(): true else: false
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func isGlobalUnicast*(address: IpAddress): bool =
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let a = initTAddress(address, Port(0))
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a.isGlobalUnicast()
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proc getRouteIpv4*(): Result[IpAddress, cstring] =
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# Avoiding Exception with initTAddress and can't make it work with static.
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# Note: `publicAddress` is only used an "example" IP to find the best route,
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# no data is send over the network to this IP!
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let
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publicAddress = TransportAddress(
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family: AddressFamily.IPv4, address_v4: [1'u8, 1, 1, 1], port: Port(0)
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)
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route = getBestRoute(publicAddress)
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if route.source.isUnspecified():
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err("No best ipv4 route found")
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else:
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let ip =
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try:
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route.source.address()
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except ValueError as e:
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# This should not occur really.
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error "Address conversion error", exception = e.name, msg = e.msg
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return err("Invalid IP address")
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ok(ip)
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