dev-cpp-users

RE: [Dev-C++] Get socket with socket function

[Reid T. <Rei...@at...>]

If you configure Dev-C++ to use cygwin as the build env you will not
have to change your code.
=20
=20

reid=20

	-----Original Message-----
	From: Alain Paschoud [mailto:ala...@ge...]=20
	Sent: Wednesday, October 29, 2003 3:16 PM
	To: dev...@li...
	Subject: [Dev-C++] Get socket with socket function
=09
=09

	Hi all,=20


	I managed to compile a simple program that should just wait for
an icoming connection on a inet type socket. I did it under Mac OS X and
Linux, and I want to do the same thing with dev-cpp.=20


	Due to explanation give on this mailing list (thanks for your
quick and usefull answers), I change the code to use winsock.h instead
of sys/socket.h. I added the necessary library and DLLs. The program
starts correctly and get it the function to create the socket file
descriptor (it is very simple) :=20


	int sockfd;=20


	sockfd =3D socket(AF_INET, SOCK_STREAM, 0);=20


	BUT the result of socket function is always -1 (sockfd =3D -1).
What could be the cause of that ? I found a similar example of socket
creation for windows, I did exactly the same as in the example. The only
thing I have found in "socket" man page is :=20


	"A -1 is returned if an error occurs"=20


	But how can an error happen at this step ?=20


	Thank you for any advice.=20


	Best regards.

RE: [Dev-C++] Get socket with socket function

[P.D. v. Z. <pa...@my...>]

But your application will be dependent on the Cygwin DLLs, which can be a
nuisance. I always prefer native code over emulation, especially when the
emulation requires 3rd party libraries.

________________________________

From: dev...@li...
[mailto:dev...@li...] On Behalf Of Reid
Thompson
Sent: Wednesday, October 29, 2003 11:00 PM
To: Alain Paschoud; dev...@li...
Subject: RE: [Dev-C++] Get socket with socket function


If you configure Dev-C++ to use cygwin as the build env you will not have to
change your code.
 
 

reid 

	-----Original Message-----
	From: Alain Paschoud [mailto:ala...@ge...] 
	Sent: Wednesday, October 29, 2003 3:16 PM
	To: dev...@li...
	Subject: [Dev-C++] Get socket with socket function
	
	

	Hi all, 


	I managed to compile a simple program that should just wait for an
icoming connection on a inet type socket. I did it under Mac OS X and Linux,
and I want to do the same thing with dev-cpp. 


	Due to explanation give on this mailing list (thanks for your quick
and usefull answers), I change the code to use winsock.h instead of
sys/socket.h. I added the necessary library and DLLs. The program starts
correctly and get it the function to create the socket file descriptor (it
is very simple) : 


	int sockfd; 


	sockfd = socket(AF_INET, SOCK_STREAM, 0); 


	BUT the result of socket function is always -1 (sockfd = -1). What
could be the cause of that ? I found a similar example of socket creation
for windows, I did exactly the same as in the example. The only thing I have
found in "socket" man page is : 


	"A -1 is returned if an error occurs" 


	But how can an error happen at this step ? 


	Thank you for any advice. 


	Best regards.

Re: [Dev-C++] Get socket with socket function

[Reid T. <rei...@at...>]

My opinion differs.  I am only offering an alternative that may provide 
alain the means
to get the end result he wants w less code modification.  I imagine he 
could as easily configure
Dev-C++ to use borlands compiler/libs/dlls.  His choice.  But,
I have no issue with my application utilizing the cygwin dll.
In my opinion, cygwin more than makes up for that by:
  providing a posix/linux/unix env to work in
  providing ~all the tools of a *nix environment
  allowing me to run any Xwindows client i desire
  providing me the ease to take most any *nix source code download &
     untar it; type ./configure; type make; type make install and be 
done w/o
     having to re-write the code
   providing me the ease of use to move code that I am working on from 
*nix to
   Win* and back.
   etc, etc

how do you define native code?
The cygwin dll( c code compiled on windows to run on windows) is as 
native as any of the mingw .dll/.a files.  And they (the mingw files) 
are 3rd party libs.

reid


P.D. van Zelst wrote:

> But your application will be dependent on the Cygwin DLLs, which can be a
> nuisance. I always prefer native code over emulation, especially when the
> emulation requires 3rd party libraries.
>
> ________________________________
>
> From: dev...@li...
> [mailto:dev...@li...] On Behalf Of Reid
> Thompson
> Sent: Wednesday, October 29, 2003 11:00 PM
> To: Alain Paschoud; dev...@li...
> Subject: RE: [Dev-C++] Get socket with socket function
>
>
> If you configure Dev-C++ to use cygwin as the build env you will not 
> have to
> change your code.
>  
>  
>
> reid
>
>         -----Original Message-----
>         From: Alain Paschoud [mailto:ala...@ge...]
>         Sent: Wednesday, October 29, 2003 3:16 PM
>         To: dev...@li...
>         Subject: [Dev-C++] Get socket with socket function
>        
>        
>
>         Hi all,
>
>
>         I managed to compile a simple program that should just wait 
> for an
> icoming connection on a inet type socket. I did it under Mac OS X and 
> Linux,
> and I want to do the same thing with dev-cpp.
>
>
>         Due to explanation give on this mailing list (thanks for your 
> quick
> and usefull answers), I change the code to use winsock.h instead of
> sys/socket.h. I added the necessary library and DLLs. The program starts
> correctly and get it the function to create the socket file descriptor 
> (it
> is very simple) :
>
>
>         int sockfd;
>
>
>         sockfd = socket(AF_INET, SOCK_STREAM, 0);
>
>
>         BUT the result of socket function is always -1 (sockfd = -1). 
> What
> could be the cause of that ? I found a similar example of socket creation
> for windows, I did exactly the same as in the example. The only thing 
> I have
> found in "socket" man page is :
>
>
>         "A -1 is returned if an error occurs"
>
>
>         But how can an error happen at this step ?
>
>
>         Thank you for any advice.
>
>
>         Best regards.
>
>
>