Remote IP from tcpClient object

[Cakkie]

Does anyone know how I can get the remove IP address when using a tcpClient object?

I accept the connection using the AcceptTcpClient of my listener object.

The tcpClient object does not seem to have any property/method that can give me this information.


Any help is appreciated.

[nightshift]

i would also love to know the answer to this question if anyone knows it?

Thanks

[nightshift]

hehehe... youd think this would be a common thing... =\

[DevGrp]

Have the client application send its own Ip address, then have the server recieve it.

[Cakkie]

The problem is that we are talking about a SMTP server here. This is a protocol which doesn't ask for IP addresses, but needs to record them to add it to the header (just in case it needs to be tracked down).

[nightshift]

Originally posted by DevGrp
Have the client application send its own Ip address, then have the server recieve it.

Thats what i have decided to do... although it would be nice if there was a way to retrieve it

[nightshift]

Ok, the code to find my internal IP is:

Dim ipHost As System.Net.IPHostEntry = System.Net.Dns.GetHostByName(System.Net.Dns.GetHostName())
        Dim ip As System.Net.IPAddress() = ipHost.AddressList
        Label1.Text = ip(0).ToString()

How would i get my external IP?

Thanks in advance

[nightshift]

Originally posted by DevGrp
Have the client application send its own Ip address, then have the server recieve it.

As i get deeper into my project i realise that this isnt a good way to do it...

it is my opinion that for security reasons the server should be responsible for reading the IP from the client. Seems like a bad idea to trust what the client is telling you the IP is...

[DevGrp]

You can use that same code to get your external ip. I take it you are behind a router? I think you have to do a little more work to get the ip from the router. One way you can get it just set up a static webpage to get the ip, have the program connect to the webpage, then grab the ip from the webpage. I've seen it done with other programs before.

[nightshift]

thats not a bad idea... ill try that...

Surely there is a way to get the IP from the client tho... there must be...
Cheers for the help dev

[Cakkie]

Hmm, I'm doing a rewrite of the code using sockets rather than the TCPClient, but I'm facing the same problem. There doesn't seem to be a way to get it directly. I'm getting this problem:

' This works, it shows something like ipaddress:port
ListBox1.Items.Add oSock.RemoteEndPoint
' this doesn't work, give an error saying that it can't convert EndPoint to String
strIP = oSock.RemoteEndPoint

[Athley]

Don't you have to do a type convertion to IPEndPoint?

CType(oSock.RemoteEndPoint, IPEndPoint).Adress.ToString
CType(oSock.RemoteEndPoint, IPEndPoint).Port.ToString

Have not tried it myself, thats why I posted it as a question.....

[Athley]

In the MS example I found they also used IPAddress.Parse as this

IPAddress.Parse(CType(oSock.RemoteEndPoint, IPEndPoint).Adress.ToString)

[Cakkie]

Thanks a lot. I'm assuming it will work (can't test it here).
Whatever happened to Winsock1.RemoteHostIP