«

Hello.


I am trying to compile a linux socket server and a client in cygwin on
windows. The g++ version is 3.3.1. The source was obtained from this
location:

http://www.linuxgazette.com/issue74/tougher.html

ServerSoccket.cpp apparently compiles OK. Socket.cpp has a problem. Here's
my output:

$ make -f Makefile.txt
g++ -c -o ServerSocket.o ServerSocket.cpp
g++ -c -o Socket.o Socket.cpp
Socket.cpp: In member function `int Socket::recv(std::string&) const':
Socket.cpp:135: error: `cout' undeclared in namespace `std'
Socket.cpp: In member function `bool Socket::connect(std::basic_string<char,
std::char_traits<char>, std::allocator<char> >, int)':
Socket.cpp:158: error: `inet_pton' undeclared (first use this function)
Socket.cpp:158: error: (Each undeclared identifier is reported only once for
each function it appears in.)
make: *** [Socket.o] Error 1

How can cout be undeclared in C++? Isnt that one of the basic basics?

Please help,

Eugene.

"Eugene A" <> wrote in message
news: s.com...
> Hello.
>
>
> I am trying to compile a linux socket server and a client in cygwin on
> windows. The g++ version is 3.3.1. The source was obtained from this
> location:
>
> http://www.linuxgazette.com/issue74/tougher.html
>
> ServerSoccket.cpp apparently compiles OK. Socket.cpp has a problem. Here's
> my output:
>
> $ make -f Makefile.txt
> g++ -c -o ServerSocket.o ServerSocket.cpp
> g++ -c -o Socket.o Socket.cpp
> Socket.cpp: In member function `int Socket::recv(std::string&) const':
> Socket.cpp:135: error: `cout' undeclared in namespace `std'
> Socket.cpp: In member function `bool
Socket::connect(std::basic_string<char,
> std::char_traits<char>, std::allocator<char> >, int)':
> Socket.cpp:158: error: `inet_pton' undeclared (first use this function)
> Socket.cpp:158: error: (Each undeclared identifier is reported only once
for
> each function it appears in.)
> make: *** [Socket.o] Error 1
>
> How can cout be undeclared in C++? Isn't that one of the basic basics?
>
> Please help,
>

Look at the code, the author has failed to include <iostream> which is the
header file that defined std::cout. Include <iostream> in Socket.cpp and you
should be OK.

john

Eugene A wrote:
> Hello.
>
>
> I am trying to compile a linux socket server and a client in cygwin on
> windows. The g++ version is 3.3.1. The source was obtained from this
> location:

I think you might be doing unnecessary work. I ported a small library
of code that uses Linux sockets to Windows sockets with minimal
modifications (A few #ifdef's....).

Is the rest of your project dependent on Unix standards?

JLR

"John Harrison" <> wrote in message
news:...
>
> > Socket.cpp: In member function `bool
> Socket::connect(std::basic_string<char,
> > std::char_traits<char>, std::allocator<char> >, int)':
> > Socket.cpp:158: error: `inet_pton' undeclared (first use this function)
> > Socket.cpp:158: error: (Each undeclared identifier is reported only once
> for
> > each function it appears in.)
> > make: *** [Socket.o] Error 1
> >
> > How can cout be undeclared in C++? Isn't that one of the basic basics?
> >
> > Please help,
> >
>
> Look at the code, the author has failed to include <iostream> which is the
> header file that defined std::cout. Include <iostream> in Socket.cpp and
you
> should be OK.
>
> john
>
>

Thanks. That did work. Weird I did not see it myself. But I still have the
second error left. I do not know what inet_pton is. I know it is some kind
of function, but that's about it.

Eugene.

"Jorge Rivera" <> wrote in message
news:Ou9tc.262450$...
>
> I think you might be doing unnecessary work. I ported a small library
> of code that uses Linux sockets to Windows sockets with minimal
> modifications (A few #ifdef's....).
>
> Is the rest of your project dependent on Unix standards?
>
> JLR

It is not really a project. I have not touched C++ in quite a while. I
thought if I could get this to work it could be a good experience.

Eugene.

"Eugene A" <> wrote in message
news: s.com...
>
> "John Harrison" <> wrote in message
> news:...
> >
> > > Socket.cpp: In member function `bool
> > Socket::connect(std::basic_string<char,
> > > std::char_traits<char>, std::allocator<char> >, int)':
> > > Socket.cpp:158: error: `inet_pton' undeclared (first use this
function)
> > > Socket.cpp:158: error: (Each undeclared identifier is reported only
once
> > for
> > > each function it appears in.)
> > > make: *** [Socket.o] Error 1
> > >
> > > How can cout be undeclared in C++? Isn't that one of the basic basics?
> > >
> > > Please help,
> > >
> >
> > Look at the code, the author has failed to include <iostream> which is
the
> > header file that defined std::cout. Include <iostream> in Socket.cpp and
> you
> > should be OK.
> >
> > john
> >
> >
>
> Thanks. That did work. Weird I did not see it myself. But I still have the
> second error left. I do not know what inet_pton is. I know it is some kind
> of function, but that's about it.
>
> Eugene.
>

I guess, but it's not a standard function so its off topic in this group.

Quick google search turned up the following

http://www.cygwin.com/ml/cygwin/2002-04/msg00043.html

inet_pton is not supported in Cygwin as of April 2002.

Better take this to the experts I think.

john

"John Harrison" <> wrote in message
news:...
>
> I guess, but it's not a standard function so its off topic in this group.
>
> Quick google search turned up the following
>
> http://www.cygwin.com/ml/cygwin/2002-04/msg00043.html
>
> inet_pton is not supported in Cygwin as of April 2002.
>
> Better take this to the experts I think.
>
> john
>
>

Hmmmm.... That means back to square one. John, is there a place where I can
find any other example of C++ socket programming. It does not have to be
cygwin specific - something that compiles, works, and the code that I can
dissect.

Thanks,

Eugene.

Eugene A wrote:
>
> "John Harrison" <> wrote in message
> news:...
> >
> > I guess, but it's not a standard function so its off topic in this group.
> >
> > Quick google search turned up the following
> >
> > http://www.cygwin.com/ml/cygwin/2002-04/msg00043.html
> >
> > inet_pton is not supported in Cygwin as of April 2002.
> >
> > Better take this to the experts I think.
> >
> > john
> >
> >
>
> Hmmmm.... That means back to square one. John, is there a place where I can
> find any other example of C++ socket programming. It does not have to be
> cygwin specific - something that compiles, works, and the code that I can
> dissect.
>

For your inet_pton problem.

A quick google search turned up the following link
http://cvsweb.netbsd.org/bsdweb.cgi/...ic/inet_pton.c

which seems to hold an implementation of that function.
I have not looked through the function if it uses some
other system dependent function.

--
Karl Heinz Buchegger

Eugene A wrote:

> Hmmmm.... That means back to square one. John, is there a place where I can
> find any other example of C++ socket programming. It does not have to be
> cygwin specific - something that compiles, works, and the code that I can
> dissect.


You need to find a resource specific to your implementation. Cygwin has
a number of mailing lists, you should investigate them.




Brian Rodenborn

"Eugene A" <> wrote in message news: s.com...
[snip]
> John, is there a place where I can
> find any other example of C++ socket programming. It does not have to be
> cygwin specific - something that compiles, works, and the code that I can
> dissect.
[snip]

C++ stream-compatible TCP/IP sockets can be seen at http://alexvn.freeservers.com/s1/sock.html.
The project has been compiled with GNU g++ version 3.3.1 (cygming special):
$ g++ *.cpp -o sock_cyg.exe // CYGWIN
$ g++ -mno-cygwin *.cpp -o sock_mgw.exe // MINGW

--
Alex Vinokur
http://mathforum.org/library/view/10978.html
http://sourceforge.net/users/alexvn