[Haskell-cafe] Network.Socket error in MacOS 10.5?
Hi,
I encountered a problem with Network.Socket in MacOS 10.5
Here is the code that I am testing,
-
-
module Main where
import qualified Network.Socket as Socket
main :: IO ()
main =
do { (hostname, _) - Socket.getNameInfo [] True False
(Socket.SockAddrUnix localhost)
-- (hostname, _) - Socket.getNameInfo [] True False
(Socket.SockAddrInet 9000 (127 + 0 * 256 + 0 * 256^2 + 1 * 256^3))
; putStrLn (show hostname)
}
Running the above code yields the following error
ghc --make -O2 TestSocket.hs
[1 of 1] Compiling Main ( TestSocket.hs, TestSocket.o )
Linking TestSocket ...
$ ./TestSocket
TestSocket: getNameInfo: does not exist (ai_family not supported)
If I switch to SockAddrInet instead, the error is gone.
I am using GHC 6.10.3 and Network 2.2.1
Regards,
Kenny
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Re: [Haskell-cafe] Network.Socket error in MacOS 10.5?
On Wed, Aug 26, 2009 at 6:33 PM, kenny luhaskellm...@gmail.com wrote:
Hi,
I encountered a problem with Network.Socket in MacOS 10.5
Here is the code that I am testing,
-
-
module Main where
import qualified Network.Socket as Socket
main :: IO ()
main =
do { (hostname, _) - Socket.getNameInfo [] True False
(Socket.SockAddrUnix localhost)
-- (hostname, _) - Socket.getNameInfo [] True False
(Socket.SockAddrInet 9000 (127 + 0 * 256 + 0 * 256^2 + 1 * 256^3))
; putStrLn (show hostname)
}
Running the above code yields the following error
ghc --make -O2 TestSocket.hs
[1 of 1] Compiling Main ( TestSocket.hs, TestSocket.o )
Linking TestSocket ...
$ ./TestSocket
TestSocket: getNameInfo: does not exist (ai_family not supported)
If I switch to SockAddrInet instead, the error is gone.
I am using GHC 6.10.3 and Network 2.2.1
Is SockAddrUnix supposed to work on Mac OS X? Could you test it by
e.g. writing a small C program that uses it?
-- Johan
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Re: [Haskell-cafe] Network.Socket error in MacOS 10.5?
I don't think getNameInfo should work for for AF_UNIX -- the name
given to SockAddrUnix is a file path, there is no name resolution.
From the man page for getnameinfo(3) on OS X:
NAME
getnameinfo -- socket address structure to hostname and service name
...
DESCRIPTION
...
The sockaddr structure sa should point to either a sockaddr_in or
sockaddr_in6 structure
(for IPv4 or IPv6 respectively) that is salen bytes long.
Similarly, from the man page for getnameinfo on my linux box:
...
The sa argument is a pointer to a generic socket address structure (of
type sockaddr_in or sockaddr_in6) of size salen that holds the input
IP address and port number.
-Ross
On Aug 26, 2009, at 2:07 PM, Johan Tibell wrote:
On Wed, Aug 26, 2009 at 6:33 PM, kenny luhaskellm...@gmail.com
wrote:
Hi,
I encountered a problem with Network.Socket in MacOS 10.5
Here is the code that I am testing,
-
-
module Main where
import qualified Network.Socket as Socket
main :: IO ()
main =
do { (hostname, _) - Socket.getNameInfo [] True False
(Socket.SockAddrUnix localhost)
-- (hostname, _) - Socket.getNameInfo [] True False
(Socket.SockAddrInet 9000 (127 + 0 * 256 + 0 * 256^2 + 1 * 256^3))
; putStrLn (show hostname)
}
Running the above code yields the following error
ghc --make -O2 TestSocket.hs
[1 of 1] Compiling Main ( TestSocket.hs, TestSocket.o )
Linking TestSocket ...
$ ./TestSocket
TestSocket: getNameInfo: does not exist (ai_family not supported)
If I switch to SockAddrInet instead, the error is gone.
I am using GHC 6.10.3 and Network 2.2.1
Is SockAddrUnix supposed to work on Mac OS X? Could you test it by
e.g. writing a small C program that uses it?
-- Johan
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Re: [Haskell-cafe] Network.Socket error in MacOS 10.5?
Thanks for the pointers. I will take a look.
Kenny
On Thu, Aug 27, 2009 at 2:20 AM, Ross Mellgren rmm-hask...@z.odi.ac wrote:
I don't think getNameInfo should work for for AF_UNIX -- the name given to
SockAddrUnix is a file path, there is no name resolution. From the man page
for getnameinfo(3) on OS X:
NAME
getnameinfo -- socket address structure to hostname and service name
...
DESCRIPTION
...
The sockaddr structure sa should point to either a sockaddr_in or
sockaddr_in6 structure
(for IPv4 or IPv6 respectively) that is salen bytes long.
Similarly, from the man page for getnameinfo on my linux box:
...
The sa argument is a pointer to a generic socket address structure (of type
sockaddr_in or sockaddr_in6) of size salen that holds the input IP address
and port number.
-Ross
On Aug 26, 2009, at 2:07 PM, Johan Tibell wrote:
On Wed, Aug 26, 2009 at 6:33 PM, kenny luhaskellm...@gmail.com wrote:
Hi,
I encountered a problem with Network.Socket in MacOS 10.5
Here is the code that I am testing,
-
-
module Main where
import qualified Network.Socket as Socket
main :: IO ()
main =
do { (hostname, _) - Socket.getNameInfo [] True False
(Socket.SockAddrUnix localhost)
-- (hostname, _) - Socket.getNameInfo [] True False
(Socket.SockAddrInet 9000 (127 + 0 * 256 + 0 * 256^2 + 1 * 256^3))
; putStrLn (show hostname)
}
Running the above code yields the following error
ghc --make -O2 TestSocket.hs
[1 of 1] Compiling Main ( TestSocket.hs, TestSocket.o )
Linking TestSocket ...
$ ./TestSocket
TestSocket: getNameInfo: does not exist (ai_family not supported)
If I switch to SockAddrInet instead, the error is gone.
I am using GHC 6.10.3 and Network 2.2.1
Is SockAddrUnix supposed to work on Mac OS X? Could you test it by
e.g. writing a small C program that uses it?
-- Johan
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