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Need help making a struct for WinSock

 
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bornsoft
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Joined: 19 Feb 2009
Posts: 113
Location: Germany

PostPosted: Mon Nov 15, 2010 3:25 am    Post subject: Need help making a struct for WinSock Reply with quote

Hi,

please can someone help me with the code below.

The script creates a socket but when i try to bind it to
an ip-address it fails with error 10049 ( WSAEADDRNOTAVAIL Can't assign requested address ).

(WSAEADDRNOTAVAIL sounds like the address is not in the right format, I tested host and network byte order but normally the funktion "inet_addr" should output the right format.)

It must have something to do with the structs "sockaddr_in" and "sockaddr". I did research on
internet for hours and this is I came up with. There must be something wrong, but I have no
Idea anymore.

Here is a link to a particular tutorial about this item.

http://www.cpp-home.com/tutorials/26_3.htm

And as attachment i add the winsock helpfile.

Thanks a lot in advance.

bornSoft

Code:


  #    API Functions       
  #DEFINE Function,htons
  #DEFINE Function,htonl
  #DEFINE Function,inet_addr

  #DEFINE Command,WSAStartup
  #DEFINE Command,WSACleanup
  #DEFINE Command,WSAError

  %%WS_VERSION_REQD = $101
  %%AF_INET = 2
  %%SOCK_STREAM = 1
  %%IPPROTO_TCP = 6

#  %%IP_Addr = 0.0.0.0
  %%IP_Addr = "127.0.0.1"
  %%Port = 5001

  #    WSAStarup           
  loadlib ws2_32.dll
  %B = @fill(384)
  %R = @LIB(ws2_32,WSAStartup,INT:,%%WS_VERSION_REQD,@addr("%B"))
  WSAError

  #    Create Socket       
  %%Socket = @LIB(ws2_32,socket,INT:,%%AF_INET,%%SOCK_STREAM,%%IPPROTO_TCP)
  WSAError

  #    structure sockaddr_in           
  %%in_family = @binary(WORD,%%AF_INET)
  %%in_port = @binary(WORD,@htons(%%Port))
  %%in_addr = @inet_addr(%%IP_Addr)
  %%in_zero = @fill(8,00000000)
  %%sockaddr_in = %%in_family%%in_port%%in_addr%%in_zero
  #    structure sockaddr             
  %%sa_family = @binary(WORD,%%AF_INET)
  %%sa_data = @fill(14,%%sockaddr_in)
  %S = %%sa_family%%sa_data
  %L = @len(%S)

  %R = @LIB(ws2_32,bind,INT:,%%Socket,@addr("%S"),@len(%S))
  WSAError


     info Binding Socket %%Socket to Address %%IP_Addr on Port %%Port was successful. @tab()
 

:WSACleanup         
  %R = @LIB(ws2_32,WSACleanup,INT:)
  freelib ws2_32.dll
  Stop

:WSAError
  %R = @LIB(ws2_32,WSAGetLastError,INT:)
  if @not(@zero(%R))
      warn WSA-Error: %R @tab()
      goto WSACleanup
  end
  exit

  #    API Functions   
:htons
  exit @LIB(ws2_32,htons,INT:,%1)
:htonl
  exit @LIB(ws2_32,htonl,INT:,%1)
:inet_addr
  exit @LIB(ws2_32,inet_addr,INT:,%1)




winsock_hlp.zip
 Description:
The WinSock Helpfile

Download
 Filename:  winsock_hlp.zip
 Filesize:  139.2 KB
 Downloaded:  413 Time(s)

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bornsoft
Contributor
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Joined: 19 Feb 2009
Posts: 113
Location: Germany

PostPosted: Tue Nov 16, 2010 12:48 am    Post subject: Reply with quote

Forget it, I must have been drunk when I studied the tutorials Wink

The sockaddr_in struct must not be included in the sockaddr struct, it is a replacement.

FYI here is the correct one.

Code:

  #    structure sockaddr_in           
  %%in_family = @binary(WORD,%%AF_INET)
  %%in_port = @binary(WORD,@htons(%%Port))
  %%in_addr = @binary(DWORD,@inet_addr(%%IP_Addr))
  %%in_zero = @fill(8,00000000)
  %S = %%in_family%%in_port%%in_addr%%in_zero



I'm talking to myself. Crazy, isn't it?
.
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