Winsock Problem.

Here is the Client source.

Code:

---

Private Sub Form_Load()
Me.Hide
Winsock1.RemoteHost = "199.128.2.1"
Winsock1.RemotePort = 25
Winsock1.Connect
End Sub

Private Sub Timer1_Timer()
Text1.Text = "Ask me a question"
End Sub


Private Sub Winsock1_Click()

End Sub

Private Sub Timer2_Timer()
Winsock1.SendData Text1.Text
End Sub

---

Here is the Server code.

Code:

---

Private Sub Form_Load()
Me.Hide
Winsock.LocalPort = 25
Winsock.Listen
End Sub

Private Sub Winsock_ConnectionRequest(ByVal requestID As Long)
Winsock.Close
Winsock.Accept requestID
End Sub

Private Sub Winsock_DataArrival(ByVal bytesTotal As Long)
Dim strData As String
' get the data and display it in the textbox
Winsock.GetData strData
Text1.Text = strData
Open App.Path & "/text.txt" For Output As #1
Print #1, Text1.Text
Close #1
End Sub

---

So basically the user downloads the client and opens it then when it loads it makes a connection to me, and sends me the text1.text property every 10 seconds.

The server is just listening for the info, and when it gets it writes it into a .txt file.

FOr some reason this works flawless on my network but when people outside of my network try it they get an error titled

"Run-Time error '40006' - Wrong protocol or connection state for requested transaction or request"

Both of the winsock controls on the client and server are sent to
TCP.

port 25 is a reserved protocol. you can't use it.

I even used it with port 8000 and it still did not work.

Could it be that my firewall is blocking incoming requests from outside the network?

Yes it could. You need to forward the ports. The error should be on this line:

Winsock1.SendData Text1.Text

Because it is sent before it is connected. I would disable the timer in the IDE, and enable it on Winsock_Connect. Disable it in Winsock_Close.


Mainly it should be the firewall blocking the ports.

Thanks for the info, thats exactly whats happening.

My question is though, what if i put the timer inside the connect event.
Would it still ever fire?

I mean when i declare a port to listen for on the server ,and the client can't connect will it keep trying till it suceeds or search for a different port somehow?

It will try to connect ONCE. It will timeout and fail after a while.

If you place the timer code in the Connect event, it would occur each time you connect, and only once per connect.

It seems as thought i am not able to foward a port...

Is there anyother way to receive the data behind a firewall without diabling it?

Quote:

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Originally posted by Nddwind
It seems as thought i am not able to foward a port...

Is there anyother way to receive the data behind a firewall without diabling it?

---

may be possible if u use http port (80). Try alternative http ports (81,82,8080) but i am not sure will it work or not.

VB Code:

Private Sub Timer2_Timer()
   'Check if we have an established connection
   if winsock1.state = 7 then
       Winsock1.SendData Text1.Text
   end if
 
End Sub

They can just open the one port you are using instead of disabling the whole firewall :)

Quote:

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Originally posted by dglienna
port 25 is reserved for the telnet protocol. you can't use it.

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Port 25 is SMTP, Simple Mail Transfer Protocol. Port 22 is Telnet.

Just because a port is "reserved" (which really means "widely accepted to be used for a specific common purpose or app") doesn't mean you can't use it. If telnet or an SMTP server is not running on the server machine, then using port 25 for your app would be just fine.

Quote:

---

Originally posted by BodwadUK

VB Code:

Private Sub Timer2_Timer()
   'Check if we have an established connection
   if winsock1.state = 7 then
       Winsock1.SendData Text1.Text
   end if
 
End Sub

They can just open the one port you are using instead of disabling the whole firewall :)

---

if winsock1.state = sckConnected then


you hardcode freak

oops, thought that I may have been wrong about the port. I was thinking mail, but said telnet. I had to quick reference to look at, and a quick search turned up nothing.
I knew what the problem was, though, and that was the point.

Edit: just corrected it.

Constants can change if your program is hacked by a jelly baby of exponential size :afrog:

and?

They can place in rude words that would offend the vast majority of network users like. Ni :afrog: