I wrote a simple client / server app (nothing major, just sends text) it
works fine locally on the same system, but once i move the client to a
remote system it errors and gives me "No connection could be made because
the target machine actively refused it" what exactly does that mean? the
targed machine actively refused it? i have port forwarding set up correctly
on ISA server to forward it to the server maching...
12  2040 
Post the code please......
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:uY******** ******@TK2MSFTN GP10.phx.gbl... I wrote a simple client / server app (nothing major, just sends text) it
works fine locally on the same system, but once i move the client to a
remote system it errors and gives me "No connection could be made because
the target machine actively refused it" what exactly does that mean? the
targed machine actively refused it? i have port forwarding set up
correctly on ISA server to forward it to the server maching...
On 2003-11-09, Brian Henry <NO************ @adelphia.net> wrote: I wrote a simple client / server app (nothing major, just sends text) it
works fine locally on the same system, but once i move the client to a
remote system it errors and gives me "No connection could be made because
the target machine actively refused it" what exactly does that mean? the
targed machine actively refused it? i have port forwarding set up correctly
on ISA server to forward it to the server maching...
It means that you are attempting to connect to the wrong address/port...
You may want to post a bit of code. I would suggest the code that you
use in the client to connect to the server, and probably the snippet in
the server you use to start listening.
--
Tom Shelton
MVP [Visual Basic]
Check the address where the client try to connect.. it should be the network
address of the server machine, not 127.0.0.1 or what ever was first time
when used on hte same machine as the server
--
Ceers,
Crirus
------------------------------
If work were a good thing, the boss would take it all from you
------------------------------
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:uY******** ******@TK2MSFTN GP10.phx.gbl... I wrote a simple client / server app (nothing major, just sends text) it
works fine locally on the same system, but once i move the client to a
remote system it errors and gives me "No connection could be made because
the target machine actively refused it" what exactly does that mean? the
targed machine actively refused it? i have port forwarding set up
correctly on ISA server to forward it to the server maching...
========== client ============
=============== ===========
Try
Dim tcpClient As New System.Net.Sock ets.TcpClient
tcpClient.Conne ct("24.50.177.2 29", 9000)
Dim networkStream As NetworkStream = tcpClient.GetSt ream
If networkStream.C anWrite Then
Try
Dim sendBytes As Byte() = Encoding.ASCII. GetBytes("someo ne went to test
website")
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Catch ex As Exception
End Try
End If
Catch ex As Exception
Response.Write( ex.Message)
Response.Write( ex.Source)
Response.Write( ex.HelpLink)
End Try
======= server ==============
Const tcpPort As Integer = 9000
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
Dim tcpListener As New Net.Sockets.Tcp Listener(localA ddr, tcpPort)
Dim listnerThread As New Thread(AddressO f ListenForData)
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Me.txtOutputMes sages.Text += "Starting listener..." &
ControlChars.Cr Lf
tcpListener.Sta rt()
Me.txtOutputMes sages.Text += "Listener started, waiting for
connection..." & ControlChars.Cr Lf
Application.DoE vents()
listnerThread.S tart()
End Sub
Private Sub ListenForData()
Me.txtOutputMes sages.Text += "Thread started, waiting for data..." &
ControlChars.Cr Lf
Try
Dim tcpClient As TcpClient = tcpListener.Acc eptTcpClient
Me.txtOutputMes sages.Text += "Connection Accepted..." &
ControlChars.Cr Lf
Dim networkStream As NetworkStream = tcpClient.GetSt ream()
Dim bytes(tcpClient .ReceiveBufferS ize) As Byte
Do
networkStream.R ead(bytes, 0,
CInt(tcpClient. ReceiveBufferSi ze))
If networkStream.C anRead Then
Me.txtOutputMes sages.Text += "Client Sent: " &
Encoding.ASCII. GetString(bytes ) & ControlChars.Cr Lf
End If
Loop
Catch ex As Exception
Me.txtOutputMes sages.Text = ex.Message
tcpListener.Sto p()
End Try
End Sub
=============== ===========
Try to Change this line's IP address to an address on the internet or the
address of the machine on the network...
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:eT******** ******@TK2MSFTN GP10.phx.gbl... ========== client ============
=============== ===========
Try
Dim tcpClient As New System.Net.Sock ets.TcpClient
tcpClient.Conne ct("24.50.177.2 29", 9000)
Dim networkStream As NetworkStream = tcpClient.GetSt ream
If networkStream.C anWrite Then
Try
Dim sendBytes As Byte() = Encoding.ASCII. GetBytes("someo ne went to test
website")
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Catch ex As Exception
End Try
End If
Catch ex As Exception
Response.Write( ex.Message)
Response.Write( ex.Source)
Response.Write( ex.HelpLink)
End Try
======= server ==============
Const tcpPort As Integer = 9000
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
Dim tcpListener As New Net.Sockets.Tcp Listener(localA ddr, tcpPort)
Dim listnerThread As New Thread(AddressO f ListenForData)
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Me.txtOutputMes sages.Text += "Starting listener..." &
ControlChars.Cr Lf
tcpListener.Sta rt()
Me.txtOutputMes sages.Text += "Listener started, waiting for
connection..." & ControlChars.Cr Lf
Application.DoE vents()
listnerThread.S tart()
End Sub
Private Sub ListenForData()
Me.txtOutputMes sages.Text += "Thread started, waiting for data..."
& ControlChars.Cr Lf
Try
Dim tcpClient As TcpClient = tcpListener.Acc eptTcpClient
Me.txtOutputMes sages.Text += "Connection Accepted..." &
ControlChars.Cr Lf
Dim networkStream As NetworkStream = tcpClient.GetSt ream()
Dim bytes(tcpClient .ReceiveBufferS ize) As Byte
Do
networkStream.R ead(bytes, 0,
CInt(tcpClient. ReceiveBufferSi ze))
If networkStream.C anRead Then
Me.txtOutputMes sages.Text += "Client Sent: " &
Encoding.ASCII. GetString(bytes ) & ControlChars.Cr Lf
End If
Loop
Catch ex As Exception
Me.txtOutputMes sages.Text = ex.Message
tcpListener.Sto p()
End Try
End Sub
=============== ===========
tried that, and did not work still...
"scorpion53 061" <sc************ *************** *@yahoo.com> wrote in message
news:us******** *****@TK2MSFTNG P09.phx.gbl... Try to Change this line's IP address to an address on the internet or the
address of the machine on the network...
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:eT******** ******@TK2MSFTN GP10.phx.gbl... ========== client ============
=============== ===========
Try
Dim tcpClient As New System.Net.Sock ets.TcpClient
tcpClient.Conne ct("24.50.177.2 29", 9000)
Dim networkStream As NetworkStream = tcpClient.GetSt ream
If networkStream.C anWrite Then
Try
Dim sendBytes As Byte() = Encoding.ASCII. GetBytes("someo ne went to test
website")
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Catch ex As Exception
End Try
End If
Catch ex As Exception
Response.Write( ex.Message)
Response.Write( ex.Source)
Response.Write( ex.HelpLink)
End Try
======= server ==============
Const tcpPort As Integer = 9000
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
Dim tcpListener As New Net.Sockets.Tcp Listener(localA ddr, tcpPort)
Dim listnerThread As New Thread(AddressO f ListenForData)
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Me.txtOutputMes sages.Text += "Starting listener..." &
ControlChars.Cr Lf
tcpListener.Sta rt()
Me.txtOutputMes sages.Text += "Listener started, waiting for
connection..." & ControlChars.Cr Lf
Application.DoE vents()
listnerThread.S tart()
End Sub
Private Sub ListenForData()
Me.txtOutputMes sages.Text += "Thread started, waiting for
data..." & ControlChars.Cr Lf
Try
Dim tcpClient As TcpClient = tcpListener.Acc eptTcpClient
Me.txtOutputMes sages.Text += "Connection Accepted..." &
ControlChars.Cr Lf
Dim networkStream As NetworkStream = tcpClient.GetSt ream()
Dim bytes(tcpClient .ReceiveBufferS ize) As Byte
Do
networkStream.R ead(bytes, 0,
CInt(tcpClient. ReceiveBufferSi ze))
If networkStream.C anRead Then
Me.txtOutputMes sages.Text += "Client Sent: " &
Encoding.ASCII. GetString(bytes ) & ControlChars.Cr Lf
End If
Loop
Catch ex As Exception
Me.txtOutputMes sages.Text = ex.Message
tcpListener.Sto p()
End Try
End Sub
=============== ===========
What is the address you are port forwarding 9000 to? Is it the same as the
server IP address?
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:%2******** ********@tk2msf tngp13.phx.gbl. .. tried that, and did not work still...
"scorpion53 061" <sc************ *************** *@yahoo.com> wrote in
message news:us******** *****@TK2MSFTNG P09.phx.gbl... Try to Change this line's IP address to an address on the internet or
the address of the machine on the network...
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:eT******** ******@TK2MSFTN GP10.phx.gbl... ========== client ============
=============== ===========
Try
Dim tcpClient As New System.Net.Sock ets.TcpClient
tcpClient.Conne ct("24.50.177.2 29", 9000)
Dim networkStream As NetworkStream = tcpClient.GetSt ream
If networkStream.C anWrite Then
Try
Dim sendBytes As Byte() = Encoding.ASCII. GetBytes("someo ne went to
test website")
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Catch ex As Exception
End Try
End If
Catch ex As Exception
Response.Write( ex.Message)
Response.Write( ex.Source)
Response.Write( ex.HelpLink)
End Try
======= server ==============
Const tcpPort As Integer = 9000
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
Dim tcpListener As New Net.Sockets.Tcp Listener(localA ddr, tcpPort)
Dim listnerThread As New Thread(AddressO f ListenForData)
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Me.txtOutputMes sages.Text += "Starting listener..." &
ControlChars.Cr Lf
tcpListener.Sta rt()
Me.txtOutputMes sages.Text += "Listener started, waiting for
connection..." & ControlChars.Cr Lf
Application.DoE vents()
listnerThread.S tart()
End Sub
Private Sub ListenForData()
Me.txtOutputMes sages.Text += "Thread started, waiting for
data..." & ControlChars.Cr Lf
Try
Dim tcpClient As TcpClient = tcpListener.Acc eptTcpClient
Me.txtOutputMes sages.Text += "Connection Accepted..." &
ControlChars.Cr Lf
Dim networkStream As NetworkStream = tcpClient.GetSt ream()
Dim bytes(tcpClient .ReceiveBufferS ize) As Byte
Do
networkStream.R ead(bytes, 0,
CInt(tcpClient. ReceiveBufferSi ze))
If networkStream.C anRead Then
Me.txtOutputMes sages.Text += "Client Sent: " &
Encoding.ASCII. GetString(bytes ) & ControlChars.Cr Lf
End If
Loop
Catch ex As Exception
Me.txtOutputMes sages.Text = ex.Message
tcpListener.Sto p()
End Try
End Sub
=============== ===========
Hi Brain,
SO you know I am trying to connect to you at the ip you gave.....
I get the error you are desciribing thus far.....
I did a ping of your the port(ny-northtonawanda2 a-485.buf.adelphi a.net) you
are using and it is saying that there is a 100 percent packet loss which
means that port is not being reached...lets try another port.....
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:%2******** ********@tk2msf tngp13.phx.gbl. .. tried that, and did not work still...
"scorpion53 061" <sc************ *************** *@yahoo.com> wrote in
message news:us******** *****@TK2MSFTNG P09.phx.gbl... Try to Change this line's IP address to an address on the internet or
the address of the machine on the network...
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:eT******** ******@TK2MSFTN GP10.phx.gbl... ========== client ============
=============== ===========
Try
Dim tcpClient As New System.Net.Sock ets.TcpClient
tcpClient.Conne ct("24.50.177.2 29", 9000)
Dim networkStream As NetworkStream = tcpClient.GetSt ream
If networkStream.C anWrite Then
Try
Dim sendBytes As Byte() = Encoding.ASCII. GetBytes("someo ne went to
test website")
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Catch ex As Exception
End Try
End If
Catch ex As Exception
Response.Write( ex.Message)
Response.Write( ex.Source)
Response.Write( ex.HelpLink)
End Try
======= server ==============
Const tcpPort As Integer = 9000
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
Dim tcpListener As New Net.Sockets.Tcp Listener(localA ddr, tcpPort)
Dim listnerThread As New Thread(AddressO f ListenForData)
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Me.txtOutputMes sages.Text += "Starting listener..." &
ControlChars.Cr Lf
tcpListener.Sta rt()
Me.txtOutputMes sages.Text += "Listener started, waiting for
connection..." & ControlChars.Cr Lf
Application.DoE vents()
listnerThread.S tart()
End Sub
Private Sub ListenForData()
Me.txtOutputMes sages.Text += "Thread started, waiting for
data..." & ControlChars.Cr Lf
Try
Dim tcpClient As TcpClient = tcpListener.Acc eptTcpClient
Me.txtOutputMes sages.Text += "Connection Accepted..." &
ControlChars.Cr Lf
Dim networkStream As NetworkStream = tcpClient.GetSt ream()
Dim bytes(tcpClient .ReceiveBufferS ize) As Byte
Do
networkStream.R ead(bytes, 0,
CInt(tcpClient. ReceiveBufferSi ze))
If networkStream.C anRead Then
Me.txtOutputMes sages.Text += "Client Sent: " &
Encoding.ASCII. GetString(bytes ) & ControlChars.Cr Lf
End If
Loop
Catch ex As Exception
Me.txtOutputMes sages.Text = ex.Message
tcpListener.Sto p()
End Try
End Sub
=============== ===========
strangely that isnt my hostname... mine is pa-indiana.adelphi a.net... I
wonder id adelphia is haveign problems ...
"scorpion53 061" <sc************ *************** *@yahoo.com> wrote in message
news:Ob******** ******@TK2MSFTN GP10.phx.gbl... Hi Brain,
SO you know I am trying to connect to you at the ip you gave.....
I get the error you are desciribing thus far.....
I did a ping of your the port(ny-northtonawanda2 a-485.buf.adelphi a.net)
you are using and it is saying that there is a 100 percent packet loss which
means that port is not being reached...lets try another port.....
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:%2******** ********@tk2msf tngp13.phx.gbl. .. tried that, and did not work still...
"scorpion53 061" <sc************ *************** *@yahoo.com> wrote in
message news:us******** *****@TK2MSFTNG P09.phx.gbl... Try to Change this line's IP address to an address on the internet or the address of the machine on the network...
Dim localAddr As Net.IPAddress = Net.IPAddress.P arse("127.0.0.1 ")
"Brian Henry" <NO************ @adelphia.net> wrote in message
news:eT******** ******@TK2MSFTN GP10.phx.gbl...
> ========== client ============
>
>
>
>
>
> =============== ===========
>
> Try
>
> Dim tcpClient As New System.Net.Sock ets.TcpClient
>
> tcpClient.Conne ct("24.50.177.2 29", 9000)
>
> Dim networkStream As NetworkStream = tcpClient.GetSt ream
>
> If networkStream.C anWrite Then
>
> Try
>
> Dim sendBytes As Byte() = Encoding.ASCII. GetBytes("someo ne went to test > website")
>
> networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
>
> Catch ex As Exception
>
> End Try
>
> End If
>
> Catch ex As Exception
>
> Response.Write( ex.Message)
>
> Response.Write( ex.Source)
>
> Response.Write( ex.HelpLink)
>
> End Try
>
>
> ======= server ==============
> Const tcpPort As Integer = 9000
> Dim localAddr As Net.IPAddress =
Net.IPAddress.P arse("127.0.0.1 ") > Dim tcpListener As New Net.Sockets.Tcp Listener(localA ddr,
tcpPort) > Dim listnerThread As New Thread(AddressO f ListenForData)
>
> Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
> System.EventArg s) Handles MyBase.Load
>
> Me.txtOutputMes sages.Text += "Starting listener..." &
> ControlChars.Cr Lf
> tcpListener.Sta rt()
> Me.txtOutputMes sages.Text += "Listener started, waiting for
> connection..." & ControlChars.Cr Lf
> Application.DoE vents()
> listnerThread.S tart()
>
>
>
> End Sub
>
> Private Sub ListenForData()
> Me.txtOutputMes sages.Text += "Thread started, waiting for
data..." &
> ControlChars.Cr Lf
> Try
> Dim tcpClient As TcpClient = tcpListener.Acc eptTcpClient
> Me.txtOutputMes sages.Text += "Connection Accepted..." &
> ControlChars.Cr Lf
> Dim networkStream As NetworkStream =
tcpClient.GetSt ream() > Dim bytes(tcpClient .ReceiveBufferS ize) As Byte
> Do
> networkStream.R ead(bytes, 0,
> CInt(tcpClient. ReceiveBufferSi ze))
> If networkStream.C anRead Then
> Me.txtOutputMes sages.Text += "Client Sent: " &
> Encoding.ASCII. GetString(bytes ) & ControlChars.Cr Lf
> End If
>
> Loop
> Catch ex As Exception
> Me.txtOutputMes sages.Text = ex.Message
> tcpListener.Sto p()
> End Try
>
> End Sub
>
> =============== ===========
>
>
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