urlread - IP address could not be determined

Hi team

I am using EODHD.COM for stock data. I get the following error every now and then. example - if I am iterating over say 50 stocks data, the code sometimes throw an error for 1 stock, then I rerun the full script allover again and it will work. I used webread to start with but webread doesn't even read the webpage and returns no data (urlread returns data instead).

Error using urlreadwrite_legacy (line 88)

The IP address of "eodhd.com" could not be determined.

Error in urlreadwrite (line 88)

[output,status] = urlreadwrite_legacy(fcn,catchErrors,varargin{:});

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Error in urlread (line 16)

[s,status] = urlreadwrite(mfilename,catchErrors,url,varargin{:});

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Error in NSE_all (line 78)

EOD_data = urlread(URL2); % json data

^^^^^^^^^^^^^

My codes are:

url2A = 'https://eodhd.com/api/eod/';
url2B = '?from=';
url2C = '&period=d&api_token=';
url2D = '&fmt=json';
From = datetime("today") - (365 * 20);
dt_str = char(From);
URL2 = url2A + company + url2B + dt_str + url2C + token + url2D;
EOD_data = urlread(URL2);

*please note company is a name of the stock ticker I take from the list for the For loop so I iterate through multiple companies stocks.

Is it possible to tell urlread to wait longer and try more before throwing an error? or even keep trying for the specified time? I want urlread to not stop my script at any random time. I am new to Matlab so if anyone can help it would be great.

Answer 1

[Walter Roberson]

urlread accepts a Timeout option

However, the Timeout is on reading data only. There is no option for telling urlread to retry unsuccessful connections.

Note: urlread() is not longer recommended. It is recommended that you switch to webread instead.

[Amit Patel]

thanks Walter. I would have appreciated bit more help on why webread() returns no data whereas urlread() returns data. I am not using any other arguments inside the brackets other than the url itself. Also to continue after the https errors I will introduce try catch into my codes too.