How to configure which WI-FI interface to use when calling tcpclient function

I am using tcpclient function just like below:

TCPport=tcpclient('192.168.1.1', 8080,'ConnectTimeout',2)

But when I have two WI-FI interfaces with two hosts having the same IP (192.168.1.1) it often doesn't work. I presume that it is because the tcpclient function may try to use the wrong interface. Is there a way to tell Matlab which interface to use? below I paste what I get when I ask windows to show what networks I have

[~,~,wifi]=evalc('system([''netsh wlan show networks''])');

wifi =

    ' 
     Interface name : Wireless Network Connection 
     There are 7 networks currently visible. 

     SSID 1 : AdyPan
         Network type            : Infrastructure
         Authentication          : WPA2-Personal
         Encryption              : CCMP 

     SSID 2 : Horizontal Versine Trolley 1
         Network type            : Infrastructure
         Authentication          : Open
         Encryption              : None 

     SSID 3 : 
         Network type            : Infrastructure
         Authentication          : Open
         Encryption              : None 

     SSID 4 : WiFi_AdVa
         Network type            : Infrastructure
         Authentication          : WPA2-Personal
         Encryption              : CCMP 

     SSID 5 : TP-LINK_903D_EXT
         Network type            : Infrastructure
         Authentication          : WPA2-Personal
         Encryption              : CCMP 

     SSID 6 : TP-LINK_903D
         Network type            : Infrastructure
         Authentication          : WPA2-Personal
         Encryption              : CCMP 

     SSID 7 : Toduti
         Network type            : Infrastructure
         Authentication          : WPA2-Personal
         Encryption              : CCMP 

     Interface name : Wireless Network Connection 4 
     There are 3 networks currently visible. 

     SSID 1 : Horizontal Versine Trolley 1
         Network type            : Infrastructure
         Authentication          : Open
         Encryption              : None 

     SSID 2 : Toduti
         Network type            : Infrastructure
         Authentication          : WPA2-Personal
         Encryption              : CCMP 

     SSID 3 : WiFi_AdVa
         Network type            : Infrastructure
         Authentication          : WPA2-Personal
         Encryption              : CCMP

Thus, what I want to do is to tell which interface to use "Wireless Network Connection" or "Wireless Network Connection 4". I need to do this because both interfaces have an IP address of 192.168.1.1

Kind regards, Marius

[Marius Rusu]

Just thought of a workaround. If I am able to change the IP of one of the two SSIDs so that they are not the same maybe it will solve the problem.

Answer 1

[Guillaume]

I need to do this because both interfaces have an IP address of 192.168.1.1

That's never going to work, in matlab or in any other program. Each interface must be on a different subnet (subnet is dictated by IP/mask pair). As far as I know, no programming language lets you select which NIC to use. However, you can bind to a specific sending address. If both NIC use the same IP, it's pot luck which one will be used to send the data.

You need not only to change the IP of one the network but also move to a different subnet. e.g if one uses IP 192.168.1.1 with a 255.255.255.0 mask. the other can't use any IP on 192.168.1.x (you could move onto 192.168.2.x instead).

Answer 2

[Marius Rusu]

Hi,

Ohh, I see, so if the host of the first Wi-Fi is 192.168.1.1, the host of the other WI-FI cannot be 192.168.1.x, I have to make sure it is something different , e.g. 192.168.2.1 (including netmask).

Many thanks!