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Hello,
I find that even after my application calls closesocket() on a socket with an established connection, the connection continues to show "ESTABLISHED" in the output from the program netstat.
This is leading to an accumulation of connections that don't ever seem to go away.
What can I do to force a connection closed?
Thank you.
--------------------------------
"All that is necessary for the forces of evil to win in the world is for enough good men to do nothing" -- Edmund Burke
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Hi, never mind! I figured out that the connections were indeed closing, but the netstat listing was disagreeing with the MIB_TCP_STATE_ESTAB flag coming from IpHlpApi.dll
Thanks for reading my post!
--------------------------------
"All that is necessary for the forces of evil to win in the world is for enough good men to do nothing" -- Edmund Burke
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What the heck is going on here?!?!? 
another test error LNK2019: unresolved external symbol _closesocket@4 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
another test error LNK2019: unresolved external symbol _connect@12 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
another test error LNK2019: unresolved external symbol _gethostbyname@4 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
another test error LNK2019: unresolved external symbol _htons@4 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
another test error LNK2019: unresolved external symbol _main referenced in function _mainCRTStartup
another test error LNK2019: unresolved external symbol _recv@16 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
another test error LNK2019: unresolved external symbol _send@16 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
another test error LNK2019: unresolved external symbol _socket@12 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
another test error LNK2019: unresolved external symbol _WSACleanup@0 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
another test error LNK2019: unresolved external symbol _WSAStartup@8 referenced in function "int __cdecl MailIt(char *,char *,char *,char *,char *)" (?MailIt@@YAHPAD0000@Z)
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You forgot to link Ws2_32.lib.
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// When using winsock2 api, make sure these are in your stdafx.h file
#include <winsock2.h> // Need to added manually
#pragma comment(lib,"ws2_32") // Needs to be added manually
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I'm using a ODBC connectivity with a DB in an SDI appl. I retrieve data from the dlg box n on closing of the box i'm updating the data to the DB using
query="insert into Book values('"+ad.m_Auto_Ac_No+"','"+ad.m_Add_Name+"','"+ad.m_Add_Auth+"',"+temp+","+ad.m_Add_Price+",'"+ad.m_Add_Date+"',"+locstat+")";
m_pSet->Open(CRecordset::dynaset,(LPCTSTR)query,CRecordset::none);
whr m_pSet is a Crecordset object.
This returns an error as
Syntax error in FROM clause
whereas i'm nowhere using any data retrieval operation.
pl help
Man can acquire accomplishments or he can become an animal, whichever he wants. God makes the animals, man makes himself.
G. C. Lichtenberg (1742-99), German physicist, philosopher.
SH UVIK
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Firstly we can't tell what values you are pumping into the SQL statement, and secondly never, ever, EVER do what you are doing. Your app is open to SQL injection attacks. Use parameters and check the input values going into the query.
cheers,
Chris Maunder
CodeProject.com : C++ MVP
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This type of question would probrally get a better answer in the SQL forum. Expanding on what Chris said read this article SQL Injection Attack[^] for more information. Your really opening up the entire db to malice.
See the W3Schools for info on how the Insert Into Statement[^] works.
INSERT INTO table_name (column1, column2,...)<br />
VALUES (value1, value2,....)
Good Luck!
I'd love to help, but unfortunatley I have prior commitments monitoring the length of my grass. :Andrew Bleakley:
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Hi all. Im having a link error when i compile 3 source files together.
<br />
error LNK2001: unresolved external symbol __imp__SendMessageA@16<br />
Thats just one out of 4 errors. I've googled the error msg and found that other have had the same problem, but neither of their problems were ever resolved( at least not on the article/forum) So since i have this issue and i'd like to know what i need to update/change to fix this error. Im using VC++ 6 platform SDK 2003
Everything is in order to compile in the settings etc. From what i've read its some sort of out-dated problem. But how can it be out dated if i can compile the source by itself?
It would'nt compile if it was so out-dated right?
Any suggestions on what i should do is appreciated as always. Thanx in advance!
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Are you linking to "user32.lib"? I'd guess not (and you should be).
Steve
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Lets say I have a text file named text1.txt, with a few lines of text. I want to include the file as resource in the .exe, so that no one can read the file. Then I want to be able to use it just as if it was an external file, such as std::ifstream fin('text1.txt'). What steps need to be taken so that that line of code std::ifstream fin('text1,txt'), will work for an internal resource?
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It depends on which path you choose. If you want to be able to use it exactly as a file (i.e. open with CreateFile or std::ifstream) it would be a lot of work; don't even go down that road. The easiest way would be to write your own stream class that reads from resources; for this task I'd use the Boost.Iostreams[^] library.
Steve
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whenwood wrote: I want to include the file as resource in the .exe, so that no one can read the file.
I believe much like dialogs, menus, toolbars and string resources file resources could easily be read using Visual Studio. Just open the binary with Visual Studio as a resource. If your intent is to ultimately store this information privately then encrypt it in a file. Trying to write info back to a file within the binary is error prone.
I'd love to help, but unfortunatley I have prior commitments monitoring the length of my grass. :Andrew Bleakley:
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You can use, sure, import resource command in resource editor and choose the file as external file; the resulting binary will now contain a resource that can be accessed using FindResource, LoadResource, LockResource etc. (Perhaps is even better to use a separate dll only for this purpose).
On the other hand, ifstream (basic_ifstream) have contructor only with a filename. Maybe basic_istream will do it, passing in constructor a basic_streambuf for resource and probably false for 2nd argument, _Isstd. I think implementing a derived class from basic_streambuf to use with the text resource file can do it.
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hi all
i want to find the difference between two times
say example now i have started a application and after 1 min i want to see the difference
how to do it
shall i call GetSystemTime twice .
please help me with an example
Thanks in Advance
abhi
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It depends on how accurate you need the measurement to be. You can call time() twice and compare the values, if 1-second resolution is OK. Or call GetTickCount() if the system timer is accurate enough.
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The best solution is the following
DWORD Currtime;
DWORD SecondTime;
DWord Diff;
CurrTime=timeGetTime();
// Wait for some time here.. say about 10 seconds...
Sleep (10000);
SecondTime=timeGetTime();
now,
Second Time - Currtime will be equal to 10000.
i think its clear enough...
haribabu
(impossible to understand)
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Hi,
I use a customed treeview which class is derived from CView and I use a CtreeCtrl object to populate the tree programmatically. Now I would like to have a copy or a "replication" of my tree loaded into another CtreeCtrl which container is a dialog box.
Please do you know if is there a solution to do this with few coding?
Many thanks for your help.
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As a guess, and assuming that the CtreeCtrl has a copy constructor, you may be able to use the CreateDialogParam function to pass the address of the current one to the dialog as the lParam of the WM_INITDIALOG message and then assign it (copy construct it) to the copy. Of course if you can do that then you may be able to just add a member to the dialog class and assign it there, during construction. Another option would be to find away to separate it so that a function call from the view or the dialog so that either one can access it, but I do not know if that is possible.
Like I said, I am just guessing here because I am out of practice and have not done it myself.
INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra
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Hi all. I've found out how to keep a function from repeating the same string over and over. But i have another challenge. I was wondering if i could pick out certain chars etc. So i decided to play with strstr. But i have 2 errors. Here a sample code of the time function im using.
<br />
#include <time.h><br />
#include <windows.h><br />
#include <fstream><br />
using namespace std;<br />
<br />
int main (){<br />
char olddate[9] = {0}, oldtime[9] = {0};<br />
while(1){<br />
Sleep(300);<br />
char date [9];<br />
char time [9];<br />
_strdate(date);<br />
_strtime(time);<br />
bool fNewDate = strcmp(date, olddate) != 0;<br />
bool fNewTime = strcmp(time, oldtime) != 0;<br />
if(fNewDate || fNewTime){<br />
ofstream file1;<br />
file1.open("time.txt",ios::app);<br />
if(strstr(fNewDate,"1/13/07"){<br />
file1 << "[Date]: " << date << endl;<br />
strcpy(olddate, date);<br />
}<br />
if(strstr(fNewTime,"5:30"){<br />
file1 << "[Time]: " << time << endl;<br />
strcpy(oldtime, time);<br />
}<br />
file1.close();<br />
}<br />
}<br />
return 0;<br />
}<br />
The idea is to match a string like "1/13/07" with another string from the time function and save to the file. But instead i get 2 errors.
<br />
error C2664: 'strstr' : cannot convert parameter 1 from 'bool' to 'const char *'<br />
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast<br />
Any suggestions?
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You are passing 'fNewDate' and 'fNewTime', which are bools, to 'strstr' at two different places in your code, instead of a string.
INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra
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From the MSDN
char *strstr( const char *string, const char *strCharSet ); But your value is bool fNewTime
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Hi,
I need a control where I can view 32x32 icons to the left side (32bit color depth if possible) along with some information placed to the right of the icons (to make it clearer, I just need something like a listview control in report mode with 32x32 icons instead of the 16x16 icons), is it possible to have 32x32 icons in a listview control in the report mode or do I have to use subclassing? In case that I have to use subclassing, which control do you think I should use? ListView, ListBox, TreeView or some other control? Or finally do you think I should write my own control from scratch?
Thanks in advance,
Wal
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You can use whatever size image list you want in a list control. 32x32 and 16x16 are the most-commonly-used sizes, but there's no rule that you have to stick to those sizes.
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How can I set Attached or Detached second monitor in win32?
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