How to solve "Unsuccessful read: tcpip Timeout"

Question

MD 2019-3-7

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/448742-how-to-solve-unsuccessful-read-tcpip-timeout

回答： Pruthvi Muppavarapu 2019-3-11

Hello, everybody,

I have a Matlab (R2018a) error or a warning I'm desperate for right now. I want to send a message (or command) via TCP/IP to a server and then read the answer again. I do this as follows:

write1= '<Commandxyz/>';
write2 = '<Command123/>';
t = tcpip('172.31.1.1xx', 61xx);
pause(2)
fopen(t);
pause(2)
fprintf(t, write1);
pause(2)
read1=fscanf(t, '%s')
fprintf(t, write2);
pause(2)
read2=fscanf(t, '%s')
pause(2)
fclose(t);
delete(t);
clear t 

Sometimes the transfer works but in most cases I get the following warning and an empty array back:

Warning: Unsuccessful read: A timeout occurred before the Terminator was reached.
'tcpip' unable to read all requested data. For more information on possible reasons, see TCPIP Read Warnings.

Does anyone have any idea how I can get this problem solved? I have tried to insert pauses everywhere but that didn't help either.

Thank you very much!