TCP server in local network stays busy forever
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I'm trying to build a TCP connection between two PCs in my local network. The code for the server looks like this:
tcp_server = tcpip('192.168.xxx.yyy', 30000, 'NetworkRole', 'server');
tcp_server.BytesAvailableFcnMode = 'terminator';
tcp_server.Terminator = 19;
fopen(tcp_server);
The code for my client looks like this:
tcp_client = tcpip('192.168.xxx.yyy', 30000, 'NetworkRole', 'client');
fopen(tcp_client);
fwrite(tcp_client,'hello world');
When I start the code on localhost (using 127.0.0.1 as IP adress) it has no problem working. The instance of MATLAB that's running stays busy until the client connects and then I can begin sending packages back and forth.
When using this same code on the local network between different machines though, the MATLAB instance running the server just stays busy, even after the client has connected. It's like it just freezes up.
I know for sure that the TCP over the network works, because I can connect two PC via TCP using the same network adresses using some C# code that I wrote. So the problem defenetly lies in MATLAB. Also connecting my C# server on one computer to a MATLAB client on another works flawlessly. It's just MATLAB server getting stuck in "Busy" when trying to connect via Network.
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回答(3 个)
sen sun
2018-10-22
i am faced with similar problem,have you solved you problem? i will appreciate that you can give me some idea or advice.
4 个评论
sen sun
2018-10-26
firewall(status:open) lead to communication failure.when i close firewall,they run successfully,can send and receive date correctly. i copy your code,and run on my computer.they run successfully
tcp_s = tcpip('0.0.0.0', 30000, 'NetworkRole', 'server');
tcp_s.BytesAvailableFcnMode = 'terminator';
tcp_s.Terminator = 19;
fopen(tcp_s);
tcp_c = tcpip('localhost', 30000, 'NetworkRole', 'client');
fopen(tcp_c);
fwrite(tcp_c,'hello world');
0 个评论
sen sun
2018-10-26
even using two computers,each one run server or client code,they can communicate successfully. tcp_s = tcpip('0.0.0.0', 30000, 'NetworkRole', 'server'); tcp_s.BytesAvailableFcnMode = 'terminator'; tcp_s.Terminator = 19; fopen(tcp_s); tcp_c = tcpip('IPV4 address',30000,'NetworkRole','client'); fopen(tcp_c); fwrite(tcp_c,'hello world');
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