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Asked: 2026-06-04T04:50:37+00:00

In the Haskell network package bindSocket uses HostAddress and HostAddress6 which are defined as:

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In the Haskell network package

bindSocket uses HostAddress and HostAddress6

which are defined as:

-- | Network byte order.
type HostAddress = Word32

-- | Host byte order.
type HostAddress6 = (Word32, Word32, Word32, Word32)
  • How can I go from 123.123.123.123 to a Word32?
  • How can I go from an IPv6 string to (Word32, Word32, Word32, Word32)?
  • Does endianness play a role on different OSes (Windows, Linux, OS X, FreeBSD)?
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1 Answer

  1. Editorial Team

    Use getAddrInfo:

    getAddrInfo :: Maybe AddrInfo -> Maybe HostName -> Maybe ServiceName -> IO [AddrInfo]

    Resolve a host or service name to one or more addresses. The AddrInfo values that this function returns contain SockAddr values that you can pass directly to connect or bindSocket.

    This function is protocol independent. It can return both IPv4 and IPv6 address information.

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