Active computer on a WLAN

[ecube]

oh woops, haha you're right, sorry it's late here.

[oex]

:lol np late here also it could just as easily been me

It seems to me the error is somewhere around here:
         mov ecx, add_table
         mov eax, adcnt; [ecx]
         mov ecx, 16
         mul ecx
;         add eax, 4
but I am still checking what's going onwith this code

[dedndave]

what i know about winsock, you could scratch on the back of a matchbook cover - and still have room to do your taxes
but - it looks like you might be using "invoke closesocket,a.sock", even if the socket wasn't opened ? (as in the case of error)

oh - and

Code Select Expand

         mov ecx, add_table
         mov eax, [ecx]
         mov ecx, 16
         mul ecx
could be

Code Select Expand

         mov eax, add_table
         mov eax, [eax]
         shl eax,4
ecx and edx don't get trashed
         

[oex]

what i know about winsock, you could scratch on the back of a matchbook cover - and still have room to do your taxes
but - it looks like you might be using "invoke closesocket,a.sock", even if the socket wasn't opened ? (as in the case of error)

*I think* this can be resolved:

      invoke closesocket,a.sock
      .endif

Although further error checking is needed in/after fConnectToUrl.... I'm not sure what PERR does

[dedndave]

yah - that's kind of what i was thinking, i thought you needed an "else", first

[oex]

yah - that's kind of what i was thinking, i thought you needed an "else", first

No it's opening multiple sockets in a loop.... it wants to close each socket if !Socketerror.... If there is a socket error it's probably that no socket was created in fConnectToUrl

Also a likely cause of not quiting is no WSACleanup function call:
"An application must call the WSACleanup function for every successful time the WSAStartup function is called"

http://msdn.microsoft.com/en-us/library/ms742213(v=VS.85).aspx

[Farabi]

I reduced the search to 3 and it quit ok too, I dont know where is my mistake.

[Farabi]

PERR is for the error message

Code Select Expand


PERR PROC uses ebx edi esi ;, _API : DWORD
LOCAL szMsgBuf[500]:BYTE

INVOKE GetLastError
mov ebx, eax
INVOKE FormatMessage, \
FORMAT_MESSAGE_FROM_SYSTEM,\
NULL, \
ebx, \ ;Message Id
LANG_NEUTRAL + SUBLANG_DEFAULT*1024, \ ;Message language
ADDR szMsgBuf, \ ;Buffer to store message
500, \ ;Buffer size
NULL ;No more arguments
INVOKE MessageBox, NULL, ADDR szMsgBuf, NULL, MB_OK

;INVOKE ExitProcess, -1

ret

PERR ENDP


[oex]

I'm currently rewriting the code.... I'll get it sorted asap, just it's quite late so I'm slow :lol There are a couple of issues (as above) I've found, WSACleanup, the sockets issue Dave identified and the mov eax, [ecx] bit

[Farabi]

oh it seems connect wait too long for an inactive IP, anyone know how to set the time out limit?

[Farabi]

I done it, I used multiple thread which had 100ms delay each creation so it not accessing the same address at the same time.
I can check how many computers active on a WLAN server, I wonder if I could know their position by calculating the message sent back to me  :green