Repair Winsock Error Handling Vb6 (Solved)

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Winsock Error Handling Vb6

Next  section you will learn how to send data between two active connections. No blocking operation in progress sckNotSocket 10038 The descriptor is not a socket. For these your program has a bug that is fatal, or perhaps you have failed to validate user-supplied data (port number in valid range, etc.). Join and Comment By clicking you are agreeing to Experts Exchange's Terms of Use. have a peek at this web-site

Settings The settings for number are: Constant Value Description sckOutOfMemory 7 Out of memory sckInvalidPropertyValue 380 The property value is invalid. Another thought occurred to me, for some reason I think I remember there being issues with using the localhost address... Should the sole user of a *nix system have two accounts? Thanks 0 LVL 8 Overall: Level 8 Programming 5 Visual Basic Classic 1 Web Services 1 Message Expert Comment by:Volox2011-10-27 I'd totally test it out for you if I still

You can fix the problem by waiting for the socket to raise a SendCompleted event after you send the "quit" message and before you close the socket. Small part of an INI parser What's this I hear about First Edition Unix being restored? Windows will automatically ensure that the data goes into your program in the same order that it arrived at the computer.

  1. Last edited by Chris_F; 06-13-04 at 12:50 AM.
  2. This is usually due to a program bug, like trying to treat the Winsock control as a synchronous socket and just pumping data out madly via repeated SendData calls without waiting
  3. You’ll be auto redirected in 1 second.
  4. VB comes with two types of ActiveX controls: Intrinsic and ActiveX control.
  5. In this section you learned how to send data using the Winsock control.
  6. sckHostNotFound(11001) means "hey dummy, I can't find that host" so you might prompt the user for a new host...

The only thing remaining to be programmed is the code to send data. sckSuccess 40017 Successful. You may have to register before you can post: click the register link above to proceed. That would explain why you never get a Connect event - it appears that you're telling the server socket to close, which would make the .Accept meaningless (if not an outright

In fact, the Winsock control will even tell you when new data arrives on the buffer! sckConnectionRefused 10061 Connection is forcefully rejected. In those cases you should be periodically checking the connection for all of the clients from the server and closing any connections that do not respond to some kind of ping SendData can ONLY be called when connected or you will get an error.

I got that. These are the foundations for every other Winsock program, although you may employ a more elegant UI and a more proficient error debugging system. Xtreme Visual Basic Talk > Legacy Visual Basic (VB 4/5/6) > Communications > Winsock error always mean disconnect PDA Winsock error always mean disconnect lspnet06-15-2006, 05:07 PMI've been developing a server/client Today's Topics Dream.In.Code > Programming Help > VB6 Winsock error 40009 Page 1 of 1 New Topic/Question Reply 2 Replies - 2441 Views - Last Post: 09 September 2011 - 10:57

For a "serious" program you need to do an evaluation for each possible error. sckInProgress 10036 A blocking Winsock operation in progress. Why should one close winsock for this? To run the application, you’ll need to start the server on one computer.

sckMsgTooBig 10040 The datagram is too large to fit into the buffer and is truncated. Check This Out Here it is: http://msdn.microsof...2(v=VS.60).aspx . The methods are the blocks of code that are called for the sole purpose of making something happen. In the Click event, add the following line of code.   Unload Me This line of code ensures that the Form’s Unload event is called.

This example also has more complete error handling: SynchronousMessageSender.cls Private WithEvents m_Socket As Winsock Private m_bAttached As Boolean Private m_bSendCompleted As Boolean Private m_bSocketError As Boolean Private Type SocketError Number As That’s it for this application! This allows you to route all error to a common spot. Source If you choose not to have this option, then all procedures and functions will also have this error checking (unless, of course, they have their own error handling commands — but

Reply With Quote Jul 7th, 2007,05:53 PM #4 DigiRev View Profile View Forum Posts "Digital Revolution" Join Date Mar 2005 Posts 4,471 Re: winsock error handler Originally Posted by drivenbywhat That's Learning resources Microsoft Virtual Academy Channel 9 MSDN Magazine Community Forums Blogs Codeplex Support Self support Programs BizSpark (for startups) Microsoft Imagine (for students) United States (English) Newsletter Privacy & cookies The next piece of code that we’ll add will display the server’s IP address in the lblIP.

One tip I'll give you is to make your Winsock control a control array by setting it's Index = 0.

After that we will run a simple Hello World Program. PS. NOTE: You may have heard of other connection models. However, even when the Error event is present for the control, the Error event never fires and a run-time error message box displays.Code: [Select]RESOLUTION
To work around this problem, use the

A client/server connection model involves having two classes of computers. The connection is ready to go. The Winsock control has an “ether” state where the control is not open or closed, so it is important to explicitly close the connection! have a peek here Android Java Programming Cell Phones Smartphone Programming Using Automation to Control Excel from Access Video by: TechMommy Get people started with the process of using Access VBA to control Excel using

Oddly enough, if I set Cancel to True, and allow a timer I have running to do the logout command, then call another unload, it works, however in testing this configuration Add it to the label control. The socket can then be closed after a message box is shown. sckNoData 11004 Valid name, no data record of requested type.

sckInvalidOp 40020 Invalid operation at current state sckOutOfRange 40021 Argument is out of range. Client requesting admin work Advisor professor asks for my dissertation research source-code "/usr/bin/ping" is shown as yellow-on-red in the default Fedora bash color scheme -- what does it mean? An event is raised by the control so that you know when an important ‘event’ happens. You learned how to prevent a Winsock memory leak and also how to connect a client to the server.

Of course you are reporting or at least logging the errors, right? I think your problem is elsewhere... List Files by User-Defined Extensions Sending Data From MSFlexGrid To Excel in VB6 Send Data To Excel Using VB6 Folder Hider Masked Edit Control VB6 Create own User control - Basic Here is a list of the Winsock states.

vb Code: Option ExplicitPrivate Sub cmdconnect_Click()Winsock.RemoteHost = txtIp.Text ' this is the Ip of the server loops back to your own computerWinsock.RemotePort = 15151 ' this is the port it Show: Inherited Protected Print Export (0) Print Export (0) Share IN THIS ARTICLE Is this page helpful? This keeps the private variables and the event handlers in one place, instead of having them litter your main code. Whenever possible you should attempt to handle all errors before it becomes necessary for the Winsock Error event to become invoked.

It also calls the Form’s Unload event where code will be placed to clean up our Winsock control. Did you type that by mistake or am I missing something?