dev-cpp-users

[Dev-C++] How to use WSAGetLastError?

[Vlada D. <dj...@im...>]

Hi.
I'm trying to create a WinSock app. I created a socket, but bind() returns
an error, so I tried WSAGetLastError to get error code. Here's the code:

case ID_SOCK_OPEN:
              {
                 OpenSocket(PORT);//in this function I create socket
                 int error=WSAGetLastError();
                 char buffer[100];
                 itoa(error,buffer,2);
                 MessageBox(NULL,buffer,"Error Code",MB_OK);
              }
              break;
In message box I get 0, so I suppose something is wrong about this. Can
anybode tell me better way to get error code?
Another question: Here's the code for OpenSocket function. Can somebody
figure out why call to bind() fails?

BOOL OpenSocket(int port)
{
    if(sock=socket(AF_INET,SOCK_STREAM,0)==-1)
    {
        MessageBox(NULL,"Could not create
socket","Error",MB_OK|MB_ICONSTOP);
        return FALSE;
    }
    server.sin_family=AF_INET;
    server.sin_port=htons(port);
    server.sin_addr.s_addr=INADDR_ANY;

    if(bind(sock,(struct sockaddr*)&server,sizeof(struct sockaddr))==-1)
    {
        MessageBox(NULL,"Bind error","Error",MB_OK|MB_ICONSTOP);
        return FALSE;
    }

    if(listen(sock,3)==-1)
    {
        MessageBox(NULL,"Listen error","Error",MB_OK|MB_ICONSTOP);
        return FALSE;
    }
    else
    {
        MessageBox(NULL,"Socket opened","Success",MB_OK);
        return TRUE;
    }
}

Thanks in advance.
------------
Vlada

Re: [Dev-C++] How to use WSAGetLastError?

[<qa...@ho...>]

The only difference in your code compared to mine is this.

Your code:
  if(bind(sock,(struct sockaddr*)&server,sizeof(struct sockaddr))=3D=3D-1)

My code:
  if(bind(sock,(struct sockaddr*)&server,sizeof(server))=3D=3D-1)

Hope it helps...

/J


*********** REPLY SEPARATOR  ***********

On 2003-01-27 at 13:40 Vlada Djurovic wrote:

>Hi.
>I'm trying to create a WinSock app. I created a socket, but bind() returns
>an error, so I tried WSAGetLastError to get error code. Here's the code:
>
>case ID_SOCK_OPEN:
>              {
>                 OpenSocket(PORT);//in this function I create socket
>                 int error=3DWSAGetLastError();
>                 char buffer[100];
>                 itoa(error,buffer,2);
>                 MessageBox(NULL,buffer,"Error Code",MB_OK);
>              }
>              break;
>In message box I get 0, so I suppose something is wrong about this. Can
>anybode tell me better way to get error code?
>Another question: Here's the code for OpenSocket function. Can somebody
>figure out why call to bind() fails?
>
>BOOL OpenSocket(int port)
>{
>    if(sock=3Dsocket(AF_INET,SOCK_STREAM,0)=3D=3D-1)
>    {
>        MessageBox(NULL,"Could not create
>socket","Error",MB_OK|MB_ICONSTOP);
>        return FALSE;
>    }
>    server.sin_family=3DAF_INET;
>    server.sin_port=3Dhtons(port);
>    server.sin_addr.s_addr=3DINADDR_ANY;
>
>    if(bind(sock,(struct sockaddr*)&server,sizeof(struct=
 sockaddr))=3D=3D-1)
>    {
>        MessageBox(NULL,"Bind error","Error",MB_OK|MB_ICONSTOP);
>        return FALSE;
>    }
>
>    if(listen(sock,3)=3D=3D-1)
>    {
>        MessageBox(NULL,"Listen error","Error",MB_OK|MB_ICONSTOP);
>        return FALSE;
>    }
>    else
>    {
>        MessageBox(NULL,"Socket opened","Success",MB_OK);
>        return TRUE;
>    }
>}
>
>Thanks in advance.
>------------
>Vlada
>
>
>
>-------------------------------------------------------
>This SF.NET email is sponsored by:
>SourceForge Enterprise Edition + IBM + LinuxWorld =3D Something 2 See!
>http://www.vasoftware.com
>_______________________________________________
>Dev-cpp-users mailing list
>Dev...@li...
>TO UNSUBSCRIBE: http://www.noicys.cjb.net/devcpp/ub.htm
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L

Re: [Dev-C++] How to use WSAGetLastError?

[Vlada D. <dj...@im...>]

I found the error, it was a missing bracket. Thanks for your effort.

----- Original Message -----
From: "Jörgen" <qa...@ho...>
To: "Vlada Djurovic" <dj...@im...>;
<dev...@li...>
Sent: Monday, January 27, 2003 4:34 PM
Subject: Re: [Dev-C++] How to use WSAGetLastError?


The only difference in your code compared to mine is this.

Your code:
  if(bind(sock,(struct sockaddr*)&server,sizeof(struct sockaddr))==-1)

My code:
  if(bind(sock,(struct sockaddr*)&server,sizeof(server))==-1)

Hope it helps...

/J


*********** REPLY SEPARATOR  ***********

On 2003-01-27 at 13:40 Vlada Djurovic wrote:

>Hi.
>I'm trying to create a WinSock app. I created a socket, but bind() returns
>an error, so I tried WSAGetLastError to get error code. Here's the code:
>
>case ID_SOCK_OPEN:
>              {
>                 OpenSocket(PORT);//in this function I create socket
>                 int error=WSAGetLastError();
>                 char buffer[100];
>                 itoa(error,buffer,2);
>                 MessageBox(NULL,buffer,"Error Code",MB_OK);
>              }
>              break;
>In message box I get 0, so I suppose something is wrong about this. Can
>anybode tell me better way to get error code?
>Another question: Here's the code for OpenSocket function. Can somebody
>figure out why call to bind() fails?
>
>BOOL OpenSocket(int port)
>{
>    if(sock=socket(AF_INET,SOCK_STREAM,0)==-1)
>    {
>        MessageBox(NULL,"Could not create
>socket","Error",MB_OK|MB_ICONSTOP);
>        return FALSE;
>    }
>    server.sin_family=AF_INET;
>    server.sin_port=htons(port);
>    server.sin_addr.s_addr=INADDR_ANY;
>
>    if(bind(sock,(struct sockaddr*)&server,sizeof(struct sockaddr))==-1)
>    {
>        MessageBox(NULL,"Bind error","Error",MB_OK|MB_ICONSTOP);
>        return FALSE;
>    }
>
>    if(listen(sock,3)==-1)
>    {
>        MessageBox(NULL,"Listen error","Error",MB_OK|MB_ICONSTOP);
>        return FALSE;
>    }
>    else
>    {
>        MessageBox(NULL,"Socket opened","Success",MB_OK);
>        return TRUE;
>    }
>}
>
>Thanks in advance.
>------------
>Vlada
>
>
>
>-------------------------------------------------------
>This SF.NET email is sponsored by:
>SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See!
>http://www.vasoftware.com
>_______________________________________________
>Dev-cpp-users mailing list
>Dev...@li...
>TO UNSUBSCRIBE: http://www.noicys.cjb.net/devcpp/ub.htm
>https://lists.sourceforge.net/lists/listinfo/dev-cpp-users

L



-------------------------------------------------------
This SF.NET email is sponsored by:
SourceForge Enterprise Edition + IBM + LinuxWorld =omething 2 See!
http://www.vasoftware.com
_______________________________________________
Dev-cpp-users mailing list
Dev...@li...
TO UNSUBSCRIBE: http://www.noicys.cjb.net/devcpp/ub.htm
https://lists.sourceforge.net/lists/listinfo/dev-cpp-users