Matlab2020 tcp socket open

Im trying to establish a server socket on Matlab2020a.

However when I try to open the socket, it seems to be stuck at that line.

It was working till a few days back, but keeps getting stuck at this point now.

Answer 1

[Kunal Kandhari]

The following code will create Server socket at port 5001 and infinitely allows clients to connect and receive data from them:

[~,hostname] = system('hostname');
hostname = string(strtrim(hostname));
address = resolvehost(hostname,"address");

server = tcpserver(address,5001,"ConnectionChangedFcn",@connectionFcn)

function connectionFcn(src, ~)
if src.Connected
    disp("Client connected")
    readData = read(src,src.NumBytesAvailable,'string');
    disp(readData);
    write(src,"Bye Bye","string");
end
end

Client code(for testing purpose):

client = tcpclient("172.31.120.98",5001,"Timeout",5);
% do change Ip address to Ip address at which server socket is created, you
% can find that from command line after runing server socket code
while(true)
    rawData="Hello Server";
    write(client,rawData,"string");
    rawData = read(client,7,"string");
    disp(rawData);
end

For more reference:

https://in.mathworks.com/help/matlab/ref/tcpclient.html

https://in.mathworks.com/help/instrument/tcpserver.html

https://in.mathworks.com/help/instrument/communicate-using-tcpip-server-sockets.html